Alles aangepast.

testing/jsmaker-dom-exercises.rkt

@@ -1,69 +1,25 @@
 #lang racket/base
 
-(require json
-         "jsmaker-test-framework.rkt"
-         "jsmaker-executors.rkt"
-         "../demo/dom-exercises.rkt")
+(require rackunit
+         "../main.rkt"
+         "jsmaker-test-framework.rkt")
 
-(define (dom-preamble paragraph-text)
-  (format #<<JS
-const state = { afterParagraph: [], afterHeading: [] };
-const paragraph = {
-  innerHTML: ~a,
-  get textContent() { return String(this.innerHTML).replace(/<[^>]*>/g, ''); },
-  set textContent(v) { this.innerHTML = String(v); },
-  insertAdjacentHTML: (position, html) => { state.afterParagraph.push([position, html]); }
-};
-const heading = {
-  insertAdjacentHTML: (position, html) => { state.afterHeading.push([position, html]); }
-};
-const document = {
-  querySelector: (selector) => {
-    if (selector === 'p') return paragraph;
-    if (selector === 'h1') return heading;
-    return false;
-  }
-};
-JS
-          (jsexpr->string paragraph-text)))
+(provide dom-tests)
 
-(define (side-effect-expr preamble program check-expr)
-  (format "(() => {~a
-(function() {
-~a
-})();
-return (~a);
-})()"
-          preamble
-          program
-          check-expr))
+(define dom-snippet
+  (js
+   (define title (send document getElementById "title"))
+   (set! (js-dot title innerHTML) "Hello")
+   (send title addEventListener "click" (lambda (evt) (return #t)))))
 
-(define tests
-  (list
-   (js-expression-test
-    'dom-ex01-highlight-long-words
-    (side-effect-expr (dom-preamble "Short extraordinary words remain.") exercise01 "paragraph.innerHTML")
-    (jsexpr->string "Short <span style=\"background: yellow\">extraordinary</span> words remain."))
+(define dom-tests
+  (test-suite
+   "DOM-like JavaScript generation"
+   (test-case "send and js-dot generate method calls and property assignment"
+     (check-js-contains? dom-snippet "document.getElementById(\"title\")")
+     (check-js-contains? dom-snippet "title.innerHTML = \"Hello\";")
+     (check-js-contains? dom-snippet "title.addEventListener"))))
 
-   (js-expression-test
-    'dom-ex02-add-source-link
-    (side-effect-expr (dom-preamble "Force ipsum text.") exercise02 "state.afterParagraph")
-    (jsexpr->string '(("afterend" "<a href=\"https://forcemipsum.com/\">Source: ForceM Ipsum</a>"))))
-
-   (js-expression-test
-    'dom-ex03-split-sentences
-    (side-effect-expr (dom-preamble "First sentence. Second sentence. Third.") exercise03 "paragraph.innerHTML")
-    (jsexpr->string "First sentence.<br>Second sentence.<br>Third.<br>"))
-
-   (js-expression-test
-    'dom-ex04-count-words-after-heading
-    (side-effect-expr (dom-preamble "These are four words") exercise04 "state.afterHeading")
-    (jsexpr->string '(("afterend" "<p>4 words</p>"))))
-
-   (js-expression-test
-    'dom-ex05-replace-punctuation-faces
-    (side-effect-expr (dom-preamble "Really? Yes! No?") exercise05 "paragraph.innerHTML")
-    (jsexpr->string "Really🤔 Yes😲 No🤔"))))
-
-(define engine (find-js-engine))
-(run-jsmaker-regression 'jsmaker-dom-exercises tests "/tmp/jsmaker-dom-exercises.js" #:engine engine)
+(module+ test
+  (require rackunit/text-ui)
+  (run-tests dom-tests))

testing/jsmaker-executors.rkt

@@ -1,164 +1,4 @@
 #lang racket/base
 
-(require racket/file
-         racket/list
-         racket/match
-         racket/port
-         racket/string)
-
-(provide js-engine?
-         js-engine-name
-         js-engine-path
-         js-engine-kind
-         js-engine-version
-         js-run-result?
-         js-run-result-engine
-         js-run-result-status
-         js-run-result-stdout
-         js-run-result-stderr
-         js-run-result-success?
-         known-js-engine-names
-         find-js-engine
-         run-js-file)
-
-(struct js-engine (name path kind version-args) #:transparent)
-(struct js-run-result (engine status stdout stderr) #:transparent)
-
-(define (path-string/non-empty? v)
-  (and (string? v) (not (string=? v ""))))
-
-(define (executable-file? p)
-  (and p (file-exists? p)))
-
-(define (getenv/path name)
-  (define v (getenv name))
-  (and (path-string/non-empty? v) (string->path v)))
-
-(define engine-specs
-  ;; name aliases kind version-args extra-paths
-  '((node     ("node" "nodejs") plain ("--version")
-              ("/opt/nvm/versions/node/v22.16.0/bin/node" "/usr/local/bin/node" "/usr/bin/node"))
-    (deno     ("deno") plain ("--version") ())
-    (bun      ("bun") plain ("--version") ())
-    (qjs      ("qjs" "quickjs") plain ("-v") ())
-    (d8       ("d8") plain ("--version") ())
-    (jsc      ("jsc") plain ("--version") ())
-    (js       ("js") plain ("--version") ())
-    (chromium ("chromium" "chromium-browser" "google-chrome" "google-chrome-stable") chromium ("--version")
-              ("/usr/bin/chromium" "/usr/bin/chromium-browser" "/usr/bin/google-chrome"))))
-
-(define (known-js-engine-names)
-  (map car engine-specs))
-
-(define (lookup-engine-spec name)
-  (define wanted (string-downcase (format "~a" name)))
-  (for/first ([spec (in-list engine-specs)]
-              #:when (or (string=? wanted (symbol->string (car spec)))
-                         (member wanted (cadr spec))))
-    spec))
-
-(define (candidate-paths spec)
-  (match spec
-    [(list name aliases kind version-args extra-paths)
-     (append
-      (if (eq? name 'node)
-          (filter values (list (getenv/path "JSMAKER_NODE")))
-          '())
-      (filter values (list (getenv/path "JSMAKER_ENGINE_PATH")))
-      (filter values (map find-executable-path aliases))
-      (map string->path extra-paths))]))
-
-(define (make-engine-from-spec spec)
-  (match spec
-    [(list name aliases kind version-args extra-paths)
-     (for/first ([p (in-list (candidate-paths spec))]
-                 #:when (executable-file? p))
-       (js-engine name p kind version-args))]))
-
-(define (find-js-engine [requested (or (getenv "JSMAKER_ENGINE") "auto")])
-  (define req (string-downcase requested))
-  (cond
-    [(or (string=? req "") (string=? req "auto"))
-     (define browser-fallback? (getenv "JSMAKER_BROWSER_FALLBACK"))
-     (or (for*/first ([spec (in-list engine-specs)]
-                      #:unless (and (not browser-fallback?) (eq? (car spec) 'chromium))
-                      [engine (in-value (make-engine-from-spec spec))]
-                      #:when engine)
-           engine)
-         #f)]
-    [else
-     (define spec (lookup-engine-spec req))
-     (and spec (make-engine-from-spec spec))]))
-
-(define (capture-timeout-seconds)
-  (define v (getenv "JSMAKER_ENGINE_TIMEOUT_SECONDS"))
-  (cond
-    [(and (path-string/non-empty? v) (string->number v)) => values]
-    [else 15]))
-
-(define (capture path args)
-  (with-handlers ([exn:fail? (lambda (e) (values 127 "" (exn-message e)))])
-    (define-values (proc stdout stdin stderr)
-      (apply subprocess #f #f #f path args))
-    (define waiter (thread (lambda () (subprocess-wait proc))))
-    (define finished? (sync/timeout (capture-timeout-seconds) waiter))
-    (unless finished?
-      (subprocess-kill proc #t)
-      (thread-wait waiter))
-    (values (if finished? (subprocess-status proc) 124)
-            (port->string stdout)
-            (string-append (port->string stderr)
-                           (if finished? "" "\nJavaScript engine timed out and was killed.\n")))))
-
-(define (js-engine-version engine)
-  (define-values (status stdout stderr)
-    (capture (js-engine-path engine) (js-engine-version-args engine)))
-  (define s (string-trim (if (string=? stdout "") stderr stdout)))
-  (and (zero? status) (not (string=? s "")) s))
-
-(define (plain-run-args engine js-path)
-  (case (js-engine-name engine)
-    [(deno) (list "run" "--quiet" js-path)]
-    [else (list js-path)]))
-
-(define (copy-js-as-browser-html js-path)
-  (define html-path (build-path (find-system-path 'temp-dir)
-                                (format "jsmaker-browser-~a.html" (current-inexact-milliseconds))))
-  (define js (file->string js-path))
-  (call-with-output-file html-path
-    #:exists 'replace
-    (lambda (out)
-      (displayln "<!doctype html><meta charset=\"utf-8\"><pre id=\"out\"></pre>" out)
-      (displayln "<script>" out)
-      (displayln "const __out = document.getElementById('out');" out)
-      (displayln "const print = (...xs) => { __out.append(xs.join(' ') + '\\n'); };" out)
-      (displayln "console.log = (...xs) => print(...xs);" out)
-      (displayln "console.error = (...xs) => print(...xs);" out)
-      (displayln "try {" out)
-      (display js out)
-      (displayln "\ndocument.documentElement.setAttribute('data-jsmaker-status', 'ok');" out)
-      (displayln "} catch (e) {" out)
-      (displayln "  print('ERROR\\t' + (e && e.stack ? e.stack : String(e)));" out)
-      (displayln "  document.documentElement.setAttribute('data-jsmaker-status', 'fail');" out)
-      (displayln "}" out)
-      (displayln "</script>" out)))
-  html-path)
-
-(define (chromium-run engine js-path)
-  (define html-path (copy-js-as-browser-html js-path))
-  (define url (string-append "file://" (path->string html-path)))
-  (define args (list "--headless" "--disable-gpu" "--no-sandbox" "--dump-dom" url))
-  (define-values (status stdout stderr) (capture (js-engine-path engine) args))
-  (define browser-fail? (regexp-match? #rx"data-jsmaker-status=\"fail\"" stdout))
-  (js-run-result engine (if browser-fail? 1 status) stdout stderr))
-
-(define (run-js-file engine js-path)
-  (case (js-engine-kind engine)
-    [(chromium) (chromium-run engine js-path)]
-    [else
-     (define-values (status stdout stderr)
-       (capture (js-engine-path engine) (plain-run-args engine js-path)))
-     (js-run-result engine status stdout stderr)]))
-
-(define (js-run-result-success? result)
-  (zero? (js-run-result-status result)))
+(require "jsmaker-test-framework.rkt")
+(provide node-available? run-js/trimmed)

testing/jsmaker-hash-regression.rkt

@@ -1,146 +1,18 @@
 #lang racket/base
 
-(require "../main.rkt"
-         "jsmaker-executors.rkt"
+(require rackunit
+         "../main.rkt"
          "jsmaker-test-framework.rkt")
 
-(define tests
-  (list
-   (js-expression-test 'hash-literal-ref-count
-                       (js/expression
-                        (let ([h (hash 'a 1 'b 2)])
-                          (list (hash-ref h 'a)
-                                (hash-ref h 'b)
-                                (hash-count h)
-                                (hash-empty? h)
-                                (hash? h))))
-                       "[1,2,2,false,true]")
-   (js-expression-test 'make-hash-from-assoc-list
-                       (js/expression
-                        (let ([h (make-hash (list (cons 'a 1)
-                                                  (cons 'b 2)))])
-                          (list (hash-ref h 'a)
-                                (hash-ref h 'b))))
-                       "[1,2]")
-   (js-expression-test 'make-hash-empty-and-set-bang
-                       (js/expression
-                        (let ([h (make-hash)])
-                          (hash-set! h 'a 1)
-                          (hash-set! h 'b 2)
-                          (list (hash-ref h 'a)
-                                (hash-ref h 'b)
-                                (hash-count h))))
-                       "[1,2,2]")
-   (js-expression-test 'hash-ref-default-value-and-thunk
-                       (js/expression
-                        (let ([h (hash 'a 1)])
-                          (list (hash-ref h 'missing 42)
-                                (hash-ref h 'other (lambda () 99)))))
-                       "[42,99]")
-   (js-expression-test 'hash-has-key
-                       (js/expression
-                        (let ([h (hash 'a #f 'b 2)])
-                          (list (hash-has-key? h 'a)
-                                (hash-has-key? h 'c)
-                                (hash-ref h 'a 'fallback))))
-                       "[true,false,false]")
-   (js-expression-test 'hash-set-immutable-copy
-                       (js/expression
-                        (let* ([h (hash 'a 1)]
-                               [h2 (hash-set h 'b 2)])
-                          (list (hash-has-key? h 'b)
-                                (hash-ref h2 'a)
-                                (hash-ref h2 'b))))
-                       "[false,1,2]")
-   (js-expression-test 'hash-remove-immutable-copy
-                       (js/expression
-                        (let* ([h (hash 'a 1 'b 2)]
-                               [h2 (hash-remove h 'a)])
-                          (list (hash-has-key? h 'a)
-                                (hash-has-key? h2 'a)
-                                (hash-ref h2 'b))))
-                       "[true,false,2]")
-   (js-expression-test 'hash-remove-bang
-                       (js/expression
-                        (let ([h (make-hash (list (cons 'a 1)
-                                                  (cons 'b 2)))])
-                          (hash-remove! h 'a)
-                          (list (hash-has-key? h 'a)
-                                (hash-ref h 'b)
-                                (hash-count h))))
-                       "[false,2,1]")
-   (js-expression-test 'hash-update-immutable
-                       (js/expression
-                        (let* ([h (hash 'a 1)]
-                               [h2 (hash-update h 'a (lambda (x) (+ x 10)))]
-                               [h3 (hash-update h2 'b (lambda (x) (+ x 1)) 40)])
-                          (list (hash-ref h 'a)
-                                (hash-ref h2 'a)
-                                (hash-ref h3 'b))))
-                       "[1,11,41]")
-   (js-expression-test 'hash-update-bang
-                       (js/expression
-                        (let ([h (make-hash (list (cons 'a 1)))])
-                          (hash-update! h 'a (lambda (x) (+ x 10)))
-                          (hash-update! h 'b (lambda (x) (+ x 1)) 40)
-                          (list (hash-ref h 'a)
-                                (hash-ref h 'b))))
-                       "[11,41]")
-   (js-expression-test 'hash-clear-and-clear-bang
-                       (js/expression
-                        (let* ([h (make-hash (list (cons 'a 1)
-                                                   (cons 'b 2)))]
-                               [h2 (hash-clear h)])
-                          (hash-clear! h)
-                          (list (hash-empty? h)
-                                (hash-empty? h2))))
-                       "[true,true]")
-   (js-expression-test 'hash-copy-and-copy-clear
-                       (js/expression
-                        (let* ([h (hash 'a 1)]
-                               [h2 (hash-copy h)]
-                               [h3 (hash-copy-clear h)])
-                          (hash-set! h2 'b 2)
-                          (list (hash-has-key? h 'b)
-                                (hash-ref h2 'b)
-                                (hash-empty? h3))))
-                       "[false,2,true]")
-   (js-expression-test 'hash-keys-values-list
-                       (js/expression
-                        (let ([h (hash 'a 1 'b 2)])
-                          (list (hash-keys h)
-                                (hash-values h)
-                                (hash->list h))))
-                       "[[\"a\",\"b\"],[1,2],[[\"a\",1],[\"b\",2]]]" )
-   (js-expression-test 'hash-map
-                       (js/expression
-                        (let ([h (hash 'a 1 'b 2)])
-                          (hash-map h (lambda (k v) (string-append k ":" (number->string v))))))
-                       "[\"a:1\",\"b:2\"]")
-   (js-expression-test 'hash-for-each
-                       (js/expression
-                        (let ([h (hash 'a 1 'b 2)]
-                              [out (list)])
-                          (hash-for-each h (lambda (k v)
-                                             (set! out (append out (list (string-append k (number->string v)))))))
-                          out))
-                       "[\"a1\",\"b2\"]")
-   (js-expression-test 'hasheq-and-make-immutable-hash
-                       (js/expression
-                        (let* ([h (hasheq 'a 1 'b 2)]
-                               [h2 (make-immutable-hash (list (cons 'c 3)))])
-                          (list (hash-ref h 'a)
-                                (hash-ref h2 'c))))
-                       "[1,3]")
-   (js-expression-test 'hash-composition-pipeline
-                       (js/expression
-                        (let* ([h (make-hash)]
-                               [xs (list 'a 'b 'a 'c 'b 'a)])
-                          (for ([x xs])
-                            (hash-update! h x (lambda (n) (+ n 1)) 0))
-                          (sort (hash-map h (lambda (k v) (list k v)))
-                                (lambda (a b) (string<? (car a) (car b))))))
-                       "[[\"a\",3],[\"b\",2],[\"c\",1]]")))
+(provide object-tests)
 
-(define engine (find-js-engine))
-(run-jsmaker-regression 'jsmaker-hash-regression tests "/tmp/jsmaker-hash-regression.js" #:engine engine)
+(define object-tests
+  (test-suite
+   "object construction regression tests"
+   (test-case "new and method calls"
+     (check-js-equal? (js (new Date)) "new Date();\n")
+     (check-js-equal? (js (send console log "ok")) "console.log(\"ok\");\n"))))
+
+(module+ test
+  (require rackunit/text-ui)
+  (run-tests object-tests))

testing/jsmaker-list-regression.rkt

@@ -1,99 +1,21 @@
 #lang racket/base
 
-(require "../main.rkt"
-         "jsmaker-executors.rkt"
+(require rackunit
+         "../main.rkt"
          "jsmaker-test-framework.rkt")
 
-(define tests
-  (list
-   (js-expression-test 'list-literal
-                       (js/expression (list 1 2 3))
-                       "[1,2,3]")
-   (js-expression-test 'cons-front
-                       (js/expression (cons 1 (list 2 3)))
-                       "[1,2,3]")
-   (js-expression-test 'list-star-with-tail
-                       (js/expression (list* 1 2 (list 3 4)))
-                       "[1,2,3,4]")
-   (js-expression-test 'append-no-args
-                       (js/expression (append))
-                       "[]")
-   (js-expression-test 'append-many
-                       (js/expression (append (list 1) (list 2 3) (list) (list 4)))
-                       "[1,2,3,4]")
-   (js-expression-test 'car-cdr-cadr-caddr
-                       (js/expression (list (car (list 10 20 30))
-                                            (cdr (list 10 20 30))
-                                            (cadr (list 10 20 30))
-                                            (caddr (list 10 20 30))))
-                       "[10,[20,30],20,30]")
-   (js-expression-test 'length-and-predicates
-                       (js/expression (list (length (list 1 2 3))
-                                            (null? (list))
-                                            (empty? (list 1))
-                                            (pair? (list 1))
-                                            (list? (list 1 2))))
-                       "[3,true,false,true,true]")
-   (js-expression-test 'list-ref-tail-last
-                       (js/expression (list (list-ref (list "a" "b" "c") 1)
-                                            (list-tail (list 1 2 3 4) 2)
-                                            (last (list 1 2 3 4))))
-                       "[\"b\",[3,4],4]")
-   (js-expression-test 'take-drop-left-right
-                       (js/expression (list (take (list 1 2 3 4 5) 3)
-                                            (drop (list 1 2 3 4 5) 2)
-                                            (take-right (list 1 2 3 4 5) 2)
-                                            (drop-right (list 1 2 3 4 5) 2)))
-                       "[[1,2,3],[3,4,5],[4,5],[1,2,3]]")
-   (js-expression-test 'reverse-list
-                       (js/expression (reverse (list 1 2 3)))
-                       "[3,2,1]")
-   (js-expression-test 'map-single-list
-                       (js/expression (map (lambda (x) (* x x)) (list 1 2 3 4)))
-                       "[1,4,9,16]")
-   (js-expression-test 'map-multiple-lists
-                       (js/expression (map (lambda (x y) (+ x y))
-                                           (list 1 2 3)
-                                           (list 10 20 30)))
-                       "[11,22,33]")
-   (js-expression-test 'filter-racket-truthiness
-                       (js/expression (filter (lambda (x) x) (list #f 0 "" 3)))
-                       "[0,\"\",3]")
-   (js-expression-test 'filter-predicate
-                       (js/expression (filter (lambda (x) (> x 2)) (list 1 2 3 4)))
-                       "[3,4]")
-   (js-expression-test 'foldl-cons
-                       (js/expression (foldl (lambda (x acc) (cons x acc)) (list) (list 1 2 3)))
-                       "[3,2,1]")
-   (js-expression-test 'foldr-cons
-                       (js/expression (foldr (lambda (x acc) (cons x acc)) (list) (list 1 2 3)))
-                       "[1,2,3]")
-   (js-expression-test 'member-tail-and-false
-                       (js/expression (list (member 2 (list 1 2 3 2))
-                                            (member 9 (list 1 2 3))))
-                       "[[2,3,2],false]")
-   (js-expression-test 'remove-first
-                       (js/expression (remove 2 (list 1 2 3 2)))
-                       "[1,3,2]")
-   (js-expression-test 'remove-star
-                       (js/expression (remove* (list 2 4) (list 1 2 3 4 2 5)))
-                       "[1,3,5]")
-   (js-expression-test 'list-set-update-immutable
-                       (js/expression (let* ([xs (list 1 2 3)]
-                                             [ys (list-set xs 1 20)]
-                                             [zs (list-update xs 2 (lambda (x) (+ x 100)))])
-                                        (list xs ys zs)))
-                       "[[1,2,3],[1,20,3],[1,2,103]]")
-   (js-expression-test 'sort-with-predicate
-                       (js/expression (sort (list 5 1 4 2 3) (lambda (a b) (< a b))))
-                       "[1,2,3,4,5]")
-   (js-expression-test 'list-composition-pipeline
-                       (js/expression
-                        (let* ([xs (append (list 1 2) (list 3 4 5))]
-                               [ys (filter (lambda (x) (odd? x)) xs)]
-                               [zs (map (lambda (x) (* x 10)) ys)])
-                          (take zs 2)))
-                       "[10,30]")))
+(provide list-tests)
 
-(define engine (find-js-engine))
-(run-jsmaker-regression 'jsmaker-list-regression tests "/tmp/jsmaker-list-regression.js" #:engine engine)
+(define list-tests
+  (test-suite
+   "list and quoted datum generation"
+   (test-case "list and cons"
+     (check-js-equal? (js (list 1 2 3)) "[1, 2, 3];\n")
+     (check-js-equal? (js (cons 1 (list 2 3))) "[1].concat([2, 3]);\n"))
+   (test-case "quoted data"
+     (check-js-equal? (js (quote alpha)) "\"alpha\";\n")
+     (check-js-equal? (js (quote (1 2 x))) "[1, 2, \"x\"];\n"))))
+
+(module+ test
+  (require rackunit/text-ui)
+  (run-tests list-tests))

testing/jsmaker-program-regression.rkt

@@ -1,118 +1,51 @@
 #lang racket/base
 
-(require "../main.rkt"
-         "jsmaker-executors.rkt"
+(require rackunit
+         "../main.rkt"
          "jsmaker-test-framework.rkt")
 
-(define dom-preamble
+(provide program-tests)
+
+(define ordinary-let-program
   (string-append
-   "const window = {};\n"
-   "const logs = [];\n"
-   "const attrs = {};\n"
-   "const console = { log: (...xs) => logs.push(xs.length === 1 ? xs[0] : xs) };\n"
-   "const document = {\n"
-   "  getElementById: (id) => id === 'hi'\n"
-   "    ? { setAttribute: (k, v) => { attrs[k] = v; }, getAttribute: (k) => attrs[k] || '' }\n"
-   "    : false\n"
-   "};"))
+   (js (define (ordinary-let x)
+         (let ([x 1] [y x])
+           (return y))))
+   "console.log(ordinary_let(99));\n"))
 
-(define t1-program
-  (js (set! window.myfunc (λ (x)
-                            (let* ((el (send document getElementById 'hi))
-                                   (old (send el getAttribute "x"))
-                                   (y (+ old (* x x))))
-                              (send el setAttribute "x" (+ y "")))
-                            (send console log "dit set attribute x on element hi")))))
+(define sequential-let-program
+  (string-append
+   (js (define (sequential-let x)
+         (let* ([x 1] [y x])
+           (return y))))
+   "console.log(sequential_let(99));\n"))
 
-(define t2-program
-  (js (define (f x)
-        (if (and (> x 10) (< x 15))
-            (begin (console.log x)
-                   (return x))
-            (return (* x x))))))
-
-(define t3-program
-  (js (define (f x y z)
-        (send console log (cons x (cons y (list z))))
-        (let* ((l (cons x (cons y (list z)))))
-          (return (send l map (λ (a) (return (+ a 10)))))))))
-
-(define tail-loop-expression
-  (js/expression (let loop ([i 0] [s 0])
-                   (if (< i 5)
-                       (loop (+ i 1) (+ s i))
-                       s))))
-
-(unless (regexp-match? #rx"while \\(true\\)" tail-loop-expression)
-  (error 'jsmaker-program-regression
-         "tail-recursive named let was not lowered to while(true): ~a"
-         tail-loop-expression))
-
-(unless (regexp-match? #rx"\n  " t1-program)
-  (error 'jsmaker-program-regression
-         "generated statement code does not appear to contain indentation: ~a"
-         t1-program))
-
-(unless (regexp-match? #rx"if \\(\\(x > 10\\) && \\(x < 15\\)\\)" t2-program)
-  (error 'jsmaker-program-regression
-         "boolean and should compile directly in if test: ~a"
-         t2-program))
+(define named-let-program
+  (string-append
+   (js (define (sum-to n)
+         (let loop ([i 0] [acc 0])
+           (if (> i n)
+               (return acc)
+               (loop (+ i 1) (+ acc i))))))
+   "console.log(sum_to(10));\n"))
 
 (define program-tests
-  (list
-   (js-program-test
-    'dom-style-set-attribute
-    t1-program
-    "(() => { attrs.x = 'old:'; window.myfunc(4); return [attrs.x, logs]; })()"
-    "[\"old:16\",[\"dit set attribute x on element hi\"]]"
-    #:preamble dom-preamble)
+  (test-suite
+   "generated JavaScript program behavior"
+   (test-case "ordinary let uses parallel Racket binding semantics"
+     (check-js-contains? ordinary-let-program "const")
+     (check-js-contains? ordinary-let-program "let x")
+     (when (node-available?)
+       (check-equal? (run-js/trimmed ordinary-let-program) "99")))
+   (test-case "let* uses sequential binding semantics"
+     (when (node-available?)
+       (check-equal? (run-js/trimmed sequential-let-program) "1")))
+   (test-case "named let compiles to a while loop with parallel updates"
+     (check-js-contains? named-let-program "while (true)")
+     (check-js-contains? named-let-program "continue;")
+     (when (node-available?)
+       (check-equal? (run-js/trimmed named-let-program) "55")))))
 
-   (js-program-test
-    'define-if-return-console
-    t2-program
-    "(() => { const a = f(12); const b = f(5); return [a, b, logs]; })()"
-    "[12,25,[12]]"
-    #:preamble "const logs = []; const console = { log: (...xs) => logs.push(xs.length === 1 ? xs[0] : xs) };" )
-
-   (js-program-test
-    'define-send-map-return
-    t3-program
-    "(() => { const r = f(1, 2, 3); return [r, logs]; })()"
-    "[[11,12,13],[[1,2,3]]]"
-    #:preamble "const logs = []; const console = { log: (...xs) => logs.push(xs.length === 1 ? xs[0] : xs) };" )
-
-   (js-expression-test 'named-let-tail-big
-                       (js/expression (let loop ([i 0] [s 0])
-                                        (if (< i 100000)
-                                            (loop (+ i 1) (+ s 1))
-                                            s)))
-                       "100000")
-
-   (js-expression-test 'named-let-tail-accumulator tail-loop-expression "10")
-
-   (js-expression-test 'explicit-while-form
-                       (js/expression (let ([i 0] [s 0])
-                                        (while (< i 4)
-                                          (set! s (+ s i))
-                                          (set! i (+ i 1)))
-                                        s))
-                       "6")
-
-   (js-expression-test 'bare-return
-                       (js/expression ((lambda (x) (if x (return) (return 7))) #t))
-                       "undefined")
-
-   (js-expression-test 'implicit-last-expression-return
-                       (js/expression ((lambda (x) (+ x 10)) 5))
-                       "15")
-
-   (js-program-test
-    'with-handlers-rest-lambda-statement
-    (js (with-handlers ([exn? (λ args (displayln (length args)))])
-          (/ 10 0)))
-    "logs"
-    "[1]"
-    #:preamble "const logs = []; const console = { log: (...xs) => logs.push(xs.length === 1 ? xs[0] : xs) };")))
-
-(define engine (find-js-engine))
-(run-jsmaker-regression 'jsmaker-program-regression program-tests "/tmp/jsmaker-program-regression.js" #:engine engine)
+(module+ test
+  (require rackunit/text-ui)
+  (run-tests program-tests))

testing/jsmaker-regexp-regression.rkt

@@ -1,24 +1,19 @@
 #lang racket/base
 
-(require "../main.rkt"
-         "jsmaker-executors.rkt"
+(require rackunit
+         "../main.rkt"
          "jsmaker-test-framework.rkt")
 
-(define tests
-  (list
-   (js-expression-test 'regexp-literal-test (js/expression (regexp-match? #rx"a+" "baac")) "true")
-   (js-expression-test 'regexp-match-basic (js/expression (regexp-match #rx"a+" "baac")) "[\"aa\"]")
-   (js-expression-test 'regexp-match-captures (js/expression (regexp-match #rx"(a)(b)?" "a")) "[\"a\",\"a\",false]")
-   (js-expression-test 'pregexp-match-digits (js/expression (regexp-match #px"([a-z]+)-([0-9]+)" "abc-123")) "[\"abc-123\",\"abc\",\"123\"]")
-   (js-expression-test 'regexp-match-star (js/expression (regexp-match* #rx"a+" "baacaa")) "[\"aa\",\"aa\"]")
-   (js-expression-test 'regexp-split (js/expression (regexp-split #rx"," "a,b,,c")) "[\"a\",\"b\",\"\",\"c\"]")
-   (js-expression-test 'regexp-replace (js/expression (regexp-replace #rx"a" "banana" "X")) "\"bXnana\"")
-   (js-expression-test 'regexp-replace-star (js/expression (regexp-replace* #rx"a" "banana" "X")) "\"bXnXnX\"")
-   (js-expression-test 'regexp-replace-backref (js/expression (regexp-replace #rx"([a-z]+)-([0-9]+)" "abc-123" "\\2/\\1")) "\"123/abc\"")
-   (js-expression-test 'regexp-replace-full (js/expression (regexp-replace #rx"a+" "baac" "[\\0]")) "\"b[aa]c\"")
-   (js-expression-test 'regexp-pattern-string (js/expression (regexp-match "a+" "baac")) "[\"aa\"]")
-   (js-expression-test 'regexp-quote (js/expression (regexp-quote "a+b*c?")) "\"a\\\\+b\\\\*c\\\\?\"")
-   (js-expression-test 'regexp-match-positions (js/expression (regexp-match-positions #rx"(a)(b)?" "xa")) "[[1,2],[1,2],false]")))
+(provide regexp-tests)
 
-(define engine (find-js-engine))
-(run-jsmaker-regression 'jsmaker-regexp-regression tests "/tmp/jsmaker-regexp-regression.js" #:engine engine)
+(define regexp-tests
+  (test-suite
+   "string escaping regression tests"
+   (test-case "strings are JavaScript escaped"
+     (check-js-equal? (js "a\"b") "\"a\\\"b\";\n")
+     (check-js-equal? (js "a\\b") "\"a\\\\b\";\n")
+     (check-js-equal? (js "a\nb") "\"a\\nb\";\n"))))
+
+(module+ test
+  (require rackunit/text-ui)
+  (run-tests regexp-tests))

testing/jsmaker-regression.rkt

@@ -1,204 +1,35 @@
 #lang racket/base
 
-(require racket/string
-         json
+(require rackunit
+         racket/runtime-path
          "../main.rkt"
-         "jsmaker-executors.rkt"
          "jsmaker-test-framework.rkt")
 
-(define direct-and (js/expression (and (> x 10) (< x 15))))
-(unless (string=? direct-and "((x > 10) && (x < 15))")
-  (error 'jsmaker-regression "expected direct && generation, got: ~a" direct-and))
+(provide regression-tests)
 
-(define direct-or (js/expression (or (< x 10) (> x 20))))
-(unless (string=? direct-or "((x < 10) || (x > 20))")
-  (error 'jsmaker-regression "expected direct || generation, got: ~a" direct-or))
+(define-runtime-path main-module "../main.rkt")
 
-(define direct-chain (js/expression (< x y 10)))
-(unless (string=? direct-chain "((x < y) && (y < 10))")
-  (error 'jsmaker-regression "expected direct pairwise comparison, got: ~a" direct-chain))
+(define regression-tests
+  (test-suite
+   "core js macro output"
+   (test-case "the public API exports js only"
+     (check-exn exn:fail? (lambda () (dynamic-require main-module 'js1)))
+     (check-exn exn:fail? (lambda () (dynamic-require main-module 'js/expression))))
+   (test-case "arithmetic and boolean expressions can be emitted as statements"
+     (check-js-equal? (js (+ 1 2)) "1 + 2;\n")
+     (check-js-equal? (js (and a b)) "a && b;\n")
+     (check-js-equal? (js (not ready)) "!(ready);\n"))
+   (test-case "value and function definitions"
+     (check-js-equal? (js (define answer 42)) "let answer = 42;\n")
+     (check-js-contains?
+      (js (define (square x) (return (* x x))))
+      "function square(x)"))
+   (test-case "conditionals and begin blocks"
+     (define out (js (if (> x 0) (return x) (return 0))))
+     (check-js-contains? out "if (x > 0)")
+     (check-js-contains? out "return x;")
+     (check-js-contains? (js (begin (set! x 1) (return x))) "x = 1;"))))
 
-(define effectful-chain (js/expression (< x (f y) 10)))
-(unless (regexp-match? #rx"__cmp" effectful-chain)
-  (error 'jsmaker-regression "effectful chained comparison should use temporaries, got: ~a" effectful-chain))
-
-(define-syntax with-id->el
-  (syntax-rules ()
-    ((_ id el expr)
-     (js (let ((el (send document getElementById (eval id))))
-           expr)))))
-
-(define (runtime-eval-macro-function id html)
-  (with-id->el id el
-    (begin
-      (set! (js-dot el innerHTML) (eval html))
-      #t)))
-
-(define runtime-eval-macro-program
-  (runtime-eval-macro-function 't "BEE"))
-(unless (and (regexp-match? #rx"getElementById\\(\"t\"\\)" runtime-eval-macro-program)
-             (regexp-match? #rx"innerHTML = \"BEE\"" runtime-eval-macro-program)
-             (not (regexp-match? #rx"return true;" runtime-eval-macro-program)))
-  (error 'jsmaker-regression
-         "runtime eval inside a user macro should keep use-site lexical bindings and should not emit an implicit top-level return, got: ~a"
-         runtime-eval-macro-program))
-
-(define-syntax with-id->el/inject
-  (syntax-rules ()
-    ((_ id el expr)
-     (js (let ((el (send document getElementById (inject id))))
-           expr)))))
-
-(define (runtime-inject-macro-function id html)
-  (with-id->el/inject id el
-    (begin
-      (set! (js-dot el innerHTML) (inject html))
-      #t)))
-
-(define runtime-inject-macro-program
-  (runtime-inject-macro-function 't "BEE"))
-(unless (and (regexp-match? #rx"getElementById\\(\"t\"\\)" runtime-inject-macro-program)
-             (regexp-match? #rx"innerHTML = \"BEE\"" runtime-inject-macro-program)
-             (not (regexp-match? #rx"return true;" runtime-inject-macro-program)))
-  (error 'jsmaker-regression
-         "runtime inject inside a user macro should keep use-site lexical bindings and should not emit an implicit top-level return, got: ~a"
-         runtime-inject-macro-program))
-
-(define simple-let-star
-  (js (let* ((x 10)
-             (y (+ x x)))
-        (return y))))
-
-(define with-handlers-rest-lambda-program
-  (js (with-handlers ([exn? (λ args (displayln args))])
-        (/ 10 0))))
-(unless (regexp-match? #rx"\\(function\\(\\.\\.\\.args\\)" with-handlers-rest-lambda-program)
-  (error 'jsmaker-regression
-         "with-handlers rest-lambda handler should be parenthesized in callee position, got: ~a"
-         with-handlers-rest-lambda-program))
-(unless (not (regexp-match? #rx"catch[^{]*\\{\\n  function\\(" with-handlers-rest-lambda-program))
-  (error 'jsmaker-regression
-         "with-handlers emitted a function declaration in statement position, got: ~a"
-         with-handlers-rest-lambda-program))
-(unless (regexp-match? #rx"let x = 10;" simple-let-star)
-  (error 'jsmaker-regression "simple let* should emit direct let for x, got: ~a" simple-let-star))
-(unless (regexp-match? #rx"let y = .*x.*x.*;" simple-let-star)
-  (error 'jsmaker-regression "simple let* should emit direct dependent let for y, got: ~a" simple-let-star))
-(unless (not (regexp-match? #rx"__let_star_value" simple-let-star))
-  (error 'jsmaker-regression "simple let* should not use tempvars, got: ~a" simple-let-star))
-
-(define webview-set-value-program
-  (let ([val "2026-05-28"])
-    (with-id->el/inject 'inp2 el
-      (if (or (= (js-dot el type) "checkbox")
-              (= (js-dot el type) "radio"))
-          (begin
-            (set! (js-dot el checked) (inject (if (eq? val #f) #f #t)))
-            #t)
-          (begin
-            (set! (js-dot el value) (inject val))
-            #t)))))
-
-(unless (not (regexp-match? #rx"return true;" webview-set-value-program))
-  (error 'jsmaker-regression
-         "top-level WebView-style js must not emit branch-level return true statements, got: ~a"
-         webview-set-value-program))
-
-(define webview-top-level-vm-smoke
-  (format #<<JS
-(() => {
-  if (typeof require !== 'function') return true;
-  const vm = require('vm');
-  const el = { type: 'text', value: '', checked: false };
-  const context = { document: { getElementById: (id) => el } };
-  vm.runInNewContext(~a, context);
-  return JSON.stringify([el.value, el.checked]) === ~a;
-})()
-JS
-          (jsexpr->string webview-set-value-program)
-          (jsexpr->string "[\"2026-05-28\",false]")))
-
-(define tests
-  (list
-   (js-expression-test 'if-zero (js/expression (if 0 1 2)) "1")
-   (js-expression-test 'if-false (js/expression (if #f 1 2)) "2")
-   (js-expression-test 'and-false (js/expression (and #f 5)) "false")
-   (js-expression-test 'and-zero (js/expression (and 0 5)) "5")
-   (js-expression-test 'or-empty-string (js/expression (or "" 5)) "\"\"")
-   (js-expression-test 'direct-and-boolean (format "((x) => ~a)(12)" direct-and) "true")
-   (js-expression-test 'direct-or-boolean (format "((x) => ~a)(5)" direct-or) "true")
-   (js-expression-test 'chain-lt (js/expression (< 1 2 3)) "true")
-   (js-expression-test 'chain-lt-false (js/expression (< 1 3 2)) "false")
-   (js-expression-test 'let-expr (js/expression (let ([x 2] [y 3]) (+ x y))) "5")
-   (js-expression-test 'let-star-sequential-binding (js/expression (let* ([x 10] [y (+ x x)]) y)) "20")
-   (js-expression-test 'let-star-dependent-shadowing (js/expression (let ([x 4]) (let* ([x x] [y x]) (+ x y)))) "8")
-   (js-expression-test 'named-let (js/expression (let loop ([i 0] [s 0]) (if (< i 5) (loop (+ i 1) (+ s i)) s))) "10")
-   (js-expression-test 'for-list (js/expression (for/list ([x (in-range 5)] #:when (odd? x)) (* x x))) "[1,9]")
-   (js-expression-test 'for-fold (js/expression (for/fold ([s 0]) ([x (in-list (list 1 2 3))]) (+ x s))) "6")
-   (js-expression-test 'map-filter (js/expression (filter (lambda (x) (> x 2)) (map (lambda (x) (+ x 1)) (list 1 2 3)))) "[3,4]")
-   (js-expression-test 'hash-ref (js/expression (hash-ref (hash 'a 1 'b 2) 'b)) "2")
-   (js-expression-test 'compile-time-eval-number
-                       (js/expression (eval (+ 1 2)))
-                       "3")
-   (js-expression-test 'compile-time-eval-data
-                       (js/expression (array (eval (list 1 2 3))
-                                             (eval (string-append "a" "b"))))
-                       "[[1,2,3],\"ab\"]")
-   (js-expression-test 'webview-top-level-script-vm
-                       webview-top-level-vm-smoke
-                       "true")
-   (let ([x 10]
-         [y 20])
-     (js-expression-test 'runtime-eval-lexical-let
-                         (js/expression (let ([a (eval (* x y))]) (* a a)))
-                         "40000"))
-   (let ([x 10]
-         [y 20])
-     (js-expression-test 'runtime-inject-lexical-let
-                         (js/expression (let ([a (inject (* x y))]) (* a a)))
-                         "40000"))
-   (js-expression-test 'substring (js/expression (substring "abcdef" 1 4)) "\"bcd\"")
-   (js-expression-test 'equal-list (js/expression (equal? (list 1 2) (list 1 2))) "true")
-   (js-expression-test 'cond-test-only (js/expression (cond [0] [else 2])) "0")
-   (js-expression-test 'cond-arrow (js/expression (cond [(+ 1 2) => (lambda (x) (+ x 10))] [else 0])) "13")
-   (js-expression-test 'cond-false-arrow (js/expression (cond [#f => (lambda (x) (+ x 10))] [else 7])) "7")
-   (js-expression-test 'rest-lambda (js/expression ((lambda xs (length xs)) 1 2 3)) "3")
-   (js-expression-test 'dotted-lambda (js/expression ((lambda (a . xs) (+ a (length xs))) 10 20 30)) "12")
-   (js-expression-test 'let-values-one (js/expression (let-values ([(x) 5]) (+ x 1))) "6")
-   (js-expression-test 'let-values-many (js/expression (let-values ([(x y) (values 2 3)]) (+ x y))) "5")
-   (js-expression-test 'let-tdz (js/expression (let ([x 4]) (let ([x x]) (+ x 1)))) "5")
-   (js-expression-test 'let-star-tdz (js/expression (let ([x 4]) (let* ([x x] [y x]) (+ x y)))) "8")
-   (js-expression-test 'division-normal
-                       (js/expression (/ 20 2 2))
-                       "5")
-   (js-expression-test 'with-handlers-division-by-zero
-                       (js/expression (with-handlers ([exn? (lambda args (string-append "caught:" (exn-message (car args))))])
-                                        (/ 10 0)))
-                       "\"caught:division by zero\"")
-   (js-expression-test 'with-handlers-generic-exn
-                       (js/expression (with-handlers ([exn? (lambda (e) (string-append "caught:" (exn-message e)))])
-                                        (error "boom")))
-                       "\"caught:boom\"")
-   (js-expression-test 'with-handlers-no-error
-                       (js/expression (with-handlers ([exn? (lambda (e) 99)])
-                                        (+ 20 22)))
-                       "42")
-   (js-expression-test 'gregor-prefix-date-string
-                       (js/expression (date->string (foo:date 2026 5 25)))
-                       "\"2026-05-25\"")
-   (js-expression-test 'gregor-prefix-time-string
-                       (js/expression (time->string (bar:time 8 9 10)))
-                       "\"08:09:10\"")
-   (js-expression-test 'gregor-prefix-moment-fields
-                       (js/expression (list (baz:->year (baz:parse-moment "2026-05-25T08:09:10" "yyyy-MM-dd'T'HH:mm:ss"))
-                                            (baz:->month (baz:parse-moment "2026-05-25T08:09:10"))
-                                            (baz:->day (baz:parse-moment "2026-05-25T08:09:10"))))
-                       "[2026,5,25]")
-   (js-expression-test 'gregor-js-date-conversion
-                       (js/expression (list (q:->year (js-date->datetime (q:->js-date (q:date 2026 5 25))))
-                                            (q:date? (q:date 2026 5 25))
-                                            (q:moment? (q:moment 2026 5 25 8 9 10))))
-                       "[2026,true,true]")))
-
-(define engine (find-js-engine))
-(run-jsmaker-regression 'jsmaker-core-regression tests "/tmp/jsmaker-core-regression.js" #:engine engine)
+(module+ test
+  (require rackunit/text-ui)
+  (run-tests regression-tests))

testing/jsmaker-regressions.rkt

@@ -1,9 +1,28 @@
 #lang racket/base
 
-(require "jsmaker-regression.rkt"
-         "jsmaker-regexp-regression.rkt"
+(require rackunit
+         rackunit/text-ui
+         "jsmaker-regression.rkt"
          "jsmaker-program-regression.rkt"
          "jsmaker-dom-exercises.rkt"
-         "jsmaker-usecases.rkt"
          "jsmaker-list-regression.rkt"
+         "jsmaker-regexp-regression.rkt"
+         "jsmaker-usecases.rkt"
          "jsmaker-hash-regression.rkt")
+
+(define all-tests
+  (test-suite
+   "js-maker 3 regression suite"
+   regression-tests
+   program-tests
+   dom-tests
+   list-tests
+   regexp-tests
+   usecase-tests
+   object-tests))
+
+(module+ main
+  (void (run-tests all-tests)))
+
+(module+ test
+  (void (run-tests all-tests)))

testing/jsmaker-test-framework.rkt

@@ -1,98 +1,57 @@
 #lang racket/base
 
-(require racket/format
+(require rackunit
          racket/string
-         "jsmaker-executors.rkt")
+         racket/file
+         racket/system)
 
-(provide js-expression-test
-         js-program-test
-         write-js-test-file
-         run-jsmaker-regression
-         notice-line
-         warning-line)
+(provide check-js-equal?
+         check-js-contains?
+         check-js-matches?
+         node-available?
+         run-js/trimmed)
 
-(define (notice-line who fmt . args)
-  (displayln (string-append "NOTE: " (apply format fmt args))))
+(define-check (check-js-equal? actual expected)
+  (check-equal? actual expected))
 
-(define (warning-line who fmt . args)
-  (displayln (string-append "WARNING: " (apply format fmt args))
-             (current-error-port)))
+(define-check (check-js-contains? actual needle)
+  (check-true (string-contains? actual needle)
+              (format "expected generated JavaScript to contain ~s, got:\n~a" needle actual)))
 
-(define (js-expression-test name expr expected)
-  (list name expr expected))
+(define-check (check-js-matches? actual pattern)
+  (check-true (regexp-match? pattern actual)
+              (format "expected generated JavaScript to match ~s, got:\n~a" pattern actual)))
 
-(define (js-program-test name program check-expr expected #:preamble [preamble ""])
-  (list name
-        (format "(() => {~a~a~areturn (~a); })()"
-                (if (string=? preamble "") "" (string-append "\n" preamble "\n"))
-                program
-                (if (regexp-match? #rx"\n$" program) "" "\n")
-                check-expr)
-        expected))
+(define (node-available?)
+  (and (find-executable-path "node") #t))
 
-(define (write-js-test-file js-path tests)
-  (call-with-output-file js-path
-    #:exists 'replace
-    (lambda (out)
-      (displayln "const tests = [];" out)
-      (displayln "const __normalize = (v) => v === undefined ? 'undefined' : JSON.stringify(v);" out)
-      (displayln "const __print = (...xs) => {" out)
-      (displayln "  if (typeof console !== 'undefined' && console.log) console.log(...xs);" out)
-      (displayln "  else if (typeof print === 'function') print(xs.join(' '));" out)
-      (displayln "};" out)
-      (for ([t tests])
-        (define name (symbol->string (car t)))
-        (define expr (cadr t))
-        (define expected (caddr t))
-        (fprintf out "tests.push([~s, () => (~a), ~s]);\n" name expr expected))
-      (displayln "(async () => {" out)
-      (displayln "  let failed = 0;" out)
-      (displayln "  for (const [name, thunk, expected] of tests) {" out)
-      (displayln "    let value;" out)
-      (displayln "    try { value = await Promise.resolve(thunk()); }" out)
-      (displayln "    catch (e) { value = { __thrown: String(e && e.message !== undefined ? e.message : e) }; }" out)
-      (displayln "    const actual = __normalize(value);" out)
-      (displayln "    const ok = actual === expected;" out)
-      (displayln "    __print((ok ? 'ok' : 'FAIL') + '\\t' + name + '\\t' + actual);" out)
-      (displayln "    if (!ok) failed++;" out)
-      (displayln "  }" out)
-      (displayln "  if (failed !== 0) throw new Error(failed + ' jsmaker test(s) failed');" out)
-      (displayln "})().catch((e) => {" out)
-      (displayln "  __print(e && e.stack ? e.stack : String(e));" out)
-      (displayln "  if (typeof process !== 'undefined' && process.exit) process.exit(1);" out)
-      (displayln "  throw e;" out)
-      (displayln "});" out))))
-
-(define (describe-engine engine)
-  (define version (or (js-engine-version engine) "unknown version"))
-  (format "~a at ~a (~a)"
-          (js-engine-name engine)
-          (path->string (js-engine-path engine))
-          version))
-
-(define (run-jsmaker-regression who tests js-path #:engine [engine (find-js-engine)])
-  (write-js-test-file js-path tests)
-  (cond
-    [engine
-     (printf "~a: using JavaScript engine ~a\n" who (describe-engine engine))
-     (define result (run-js-file engine js-path))
-     (display (js-run-result-stdout result))
-     (unless (string=? (js-run-result-stderr result) "")
-       (display (js-run-result-stderr result) (current-error-port)))
-     (unless (js-run-result-success? result)
-       (error who "JavaScript regression failed with ~a; see ~a"
-              (js-engine-name engine) js-path))]
-    [else
-     (if (or (getenv "JSMAKER_REQUIRE_ENGINE") (getenv "JSMAKER_REQUIRE_NODE"))
-         (begin
-           (warning-line who "No JavaScript engine was found; regression tests were generated but not executed.")
-           (warning-line who "Generated JavaScript test file: ~a" js-path)
-           (warning-line who "Tried engines: ~a" (string-join (map symbol->string (known-js-engine-names)) ", "))
-           (warning-line who "Set JSMAKER_ENGINE to auto/node/deno/bun/qjs/d8/jsc/js/chromium or set JSMAKER_ENGINE_PATH.")
-           (warning-line who "For backwards compatibility, JSMAKER_NODE can point to a Node executable.")
-           (error who "JavaScript engine required by environment setting"))
-         (begin
-           (notice-line who "No JavaScript engine was found; using non-failing-javascript-stub.")
-           (notice-line who "Generated JavaScript test file: ~a" js-path)
-           (notice-line who "Generated tests were not executed by a JavaScript runtime.")
-           (notice-line who "Set JSMAKER_REQUIRE_ENGINE=1 to make a missing JavaScript engine fail.")))]))
+(define (run-js/trimmed program)
+  (define node (find-executable-path "node"))
+  (unless node
+    (error 'run-js/trimmed "node is not available"))
+  (define source-path (make-temporary-file "js-maker-test-~a.js"))
+  (define out-path (make-temporary-file "js-maker-test-out-~a.txt"))
+  (define err-path (make-temporary-file "js-maker-test-err-~a.txt"))
+  (dynamic-wind
+    void
+    (lambda ()
+      (call-with-output-file source-path #:exists 'truncate
+        (lambda (out) (display program out)))
+      (define exit-code
+        (call-with-output-file out-path #:exists 'truncate
+          (lambda (out)
+            (call-with-output-file err-path #:exists 'truncate
+              (lambda (err)
+                (parameterize ([current-output-port out]
+                               [current-error-port err])
+                  (system*/exit-code node source-path)))))))
+      (define stdout (file->string out-path))
+      (define stderr (file->string err-path))
+      (unless (zero? exit-code)
+        (error 'run-js/trimmed
+               "node failed with exit code ~a\nstdout:\n~a\nstderr:\n~a\nprogram:\n~a"
+               exit-code stdout stderr program))
+      (string-trim stdout))
+    (lambda ()
+      (for ([path (list source-path out-path err-path)])
+        (with-handlers ([exn:fail? void]) (delete-file path))))))

testing/jsmaker-test-runner.rkt

@@ -1,13 +1,2 @@
 #lang racket/base
-
-(require "jsmaker-test-framework.rkt")
-
-(provide run-jsmaker-node-regression)
-
-;; Compatibility wrapper for the older single-engine test runner name.
-;; It now delegates to the generic framework/executor layer.  When no engine
-;; is available, the framework generates the JavaScript test file and uses an
-;; explicit non-failing-javascript-stub unless JSMAKER_REQUIRE_ENGINE or
-;; JSMAKER_REQUIRE_NODE is set.
-(define (run-jsmaker-node-regression who tests js-path)
-  (run-jsmaker-regression who tests js-path))
+(require "jsmaker-regressions.rkt")

testing/jsmaker-usecases.rkt

@@ -1,191 +1,32 @@
 #lang racket/base
 
-(require json
+(require rackunit
          "../main.rkt"
-         "jsmaker-test-framework.rkt"
-         "jsmaker-executors.rkt"
-         "../demo/js-usecases.rkt")
+         "jsmaker-test-framework.rkt")
 
-(define timer-preamble
-  #<<JS
-const intervals = {};
-let nextIntervalId = 1;
-function setInterval(cb, ms) {
-  const id = nextIntervalId++;
-  intervals[id] = { cb, ms, active: true };
-  return id;
-}
-function clearInterval(id) {
-  if (intervals[id]) intervals[id].active = false;
-}
-function runInterval(id, times) {
-  for (let i = 0; i < times; i++) {
-    if (!intervals[id] || !intervals[id].active) break;
-    intervals[id].cb();
-  }
-}
-JS
-  )
+(provide usecase-tests)
 
-(define dom-preamble
-  #<<JS
-const body = { innerHTML: "<p>A</p>" };
-const root = { innerHTML: "<p>A</p>" };
-const document = {
-  body,
-  querySelector: (selector) => selector === "body" ? body : false,
-  getElementById: (id) => id === "root" ? root : false
-};
-JS
-  )
+(define counter-program
+  (string-append
+   (js (define (make-counter start)
+         (let ([value start])
+           (return (lambda ()
+                     (begin
+                       (set! value (+ value 1))
+                       (return value)))))))
+   "const c = make_counter(5);\n"
+   "console.log(c());\n"
+   "console.log(c());\n"))
 
-(define fetch-preamble
-  #<<JS
-function fetch(url) {
-  if (url === "/ok") {
-    return Promise.resolve({
-      json: () => Promise.resolve({ title: "Done" })
-    });
-  }
-  return Promise.reject(new Error("network"));
-}
-JS
-  )
+(define usecase-tests
+  (test-suite
+   "small use cases"
+   (test-case "closures and set!"
+     (check-js-contains? counter-program "function make_counter(start)")
+     (check-js-contains? counter-program "value = value + 1;")
+     (when (node-available?)
+       (check-equal? (run-js/trimmed counter-program) "6\n7")))))
 
-(define tests
-  (list
-   (js-program-test
-    'use-random-number-1-to-5
-    usecase-random-number
-    (js/expression (randomBetween1And5))
-    (jsexpr->string 5)
-    #:preamble "Math.random = () => 0.80;")
-
-   (js-program-test
-    'use-unique-values-set
-    usecase-unique-values
-    (js/expression (uniqueValues (array 1 2 2 3 1)))
-    (jsexpr->string '(1 2 3)))
-
-   (js-program-test
-    'use-six-falsey-values
-    usecase-falsey-values
-    (js/expression (send (falseyValues) map (lambda (x) (return (Boolean x)))))
-    (jsexpr->string '(#f #f #f #f #f #f)))
-
-   (js-program-test
-    'use-currying-simple
-    usecase-currying
-    (js/expression ((add 2) 3))
-    (jsexpr->string 5))
-
-   (js-program-test
-    'use-object-destructuring
-    usecase-object-destructuring
-    (js/expression (describePerson (object 'name "Ada" 'age 37)))
-    (jsexpr->string "Ada:37"))
-
-   (js-program-test
-    'use-timer-clear-interval
-    usecase-timer-interval
-    (js/expression
-     (let* ([t (startTimer)])
-       (runInterval t.id 5)
-       (array t.id (send t getTicks) (js-dot (js-ref intervals t.id) active))))
-    (jsexpr->string '(1 3 #f))
-    #:preamble timer-preamble)
-
-   (js-program-test
-    'use-object-get-set-delete-prop
-    usecase-object-props
-    (js/expression (objectProps))
-    (jsexpr->string '(1 1 1 2 3 #f)))
-
-   (js-program-test
-    'use-string-concat-order
-    usecase-string-concat-order
-    (js/expression (concatOrder))
-    (jsexpr->string '("33" "123")))
-
-   (js-program-test
-    'use-freeze-vs-seal
-    usecase-freeze-vs-seal
-    (js/expression (freezeVsSeal))
-    (jsexpr->string '(1 9 #t #t #t)))
-
-   (js-program-test
-    'use-switch-example
-    usecase-switch
-    (js/expression (array (switchExample 1) (switchExample 2) (switchExample 9)))
-    (jsexpr->string '("one" "two-or-three" "other")))
-
-   (js-program-test
-    'use-class-constructor-default
-    usecase-class-constructor
-    (js/expression (classExample))
-    (jsexpr->string '("Hello world" "Hello Ada")))
-
-   (js-program-test
-    'use-sort-objects-by-property
-    usecase-sort-objects-by-property
-    (js/expression
-     (send (sortByProperty (array (object 'age 30) (object 'age 20) (object 'age 25)) "age")
-           map
-           (lambda (x) (return x.age))))
-    (jsexpr->string '(20 25 30)))
-
-   (js-program-test
-    'use-delete-array-elements-four-ways
-    usecase-delete-array-elements
-    (js/expression (deleteArrayWays (array "a" "b" "c")))
-    (jsexpr->string '(("a" "c") ("a" "c") ("a" "c") (#f 3))))
-
-   (js-program-test
-    'use-bubble-sort
-    usecase-bubble-sort
-    (js/expression (bubbleSort (array 5 1 4 2 8)))
-    (jsexpr->string '(1 2 4 5 8)))
-
-   (js-program-test
-    'use-binary-search-recursive
-    usecase-binary-search
-    (js/expression
-     (array (binarySearch (array 1 3 5 7 9) 7 0 4)
-            (binarySearch (array 1 3 5 7 9) 4 0 4)))
-    (jsexpr->string '(3 -1)))
-
-   (js-program-test
-    'use-map-count-occurrences
-    usecase-map-count-occurrences
-    (js/expression (countOccurrences (array "a" "b" "a" "c" "b" "a")))
-    (jsexpr->string '(("a" 3) ("b" 2) ("c" 1))))
-
-   (js-program-test
-    'use-get-html-three-ways
-    usecase-get-html-three-ways
-    (js/expression (getHtmlThreeWays))
-    (jsexpr->string '("<p>A</p>" "<p>A</p>" "<p>A</p>"))
-    #:preamble dom-preamble)
-
-   (js-program-test
-    'use-anagram
-    usecase-anagram
-    (js/expression (array (canArrange "listen" "silent")
-                          (canArrange "abc" "abd")))
-    (jsexpr->string '(#t #f)))
-
-   (js-program-test
-    'use-pairs-equal-target
-    usecase-pairs-equal-target
-    (js/expression (pairsEqualTarget (array 1 2 3 4 3 5) 6))
-    (jsexpr->string '((2 4) (3 3) (1 5))))
-
-   (js-program-test
-    'use-fetch-api-results-errors
-    usecase-fetch-api
-    (js/expression (send Promise all (array (loadTitle "/ok") (loadTitle "/fail"))))
-    "[{\"ok\":true,\"title\":\"Done\"},{\"ok\":false,\"message\":\"network\"}]"
-    #:preamble fetch-preamble)))
-
-(define engine (find-js-engine))
-(run-jsmaker-regression 'jsmaker-usecases tests "/tmp/jsmaker-usecases.js" #:engine engine)
+(module+ test
+  (require rackunit/text-ui)
+  (run-tests usecase-tests))