1 files changed, 81 insertions, 0 deletions
diff --git a/csc/testing.csc b/csc/testing.csc
new file mode 100644
index 0000000..a0180e6
--- /dev/null
+++ b/csc/testing.csc
@@ -0,0 +1,81 @@
+(define-library (csc testing)
+  (export
+    assert
+    assert-equal
+    assert-raises
+    test
+    test-main)
+  (import (scheme base)
+          (only (csc format)
+            printf
+            sprintf))
+  (begin
+
+
+    (define *all-tests-succeeded* #t)
+
+
+    (define (set-all-succeeded! val) (set! *all-tests-succeeded* val))
+
+
+    (define-record-type <test-handle>
+      (make-test-handle test-name)
+      test-handle?
+      (test-name test-name set-name!))
+
+
+    (define-record-type <test-error>
+      (make-test-error)
+      test-error?)
+
+
+    (define *test-handle* (make-test-handle "global"))
+
+
+    (define-syntax test
+      (syntax-rules ()
+        ((test name body body* ...)
+         (begin
+           (set-name! *test-handle* (symbol->string 'name))
+           (printf "=== RUN   {}\n" 'name)
+           (guard (e ((test-error? e)
+                      (printf "--- FAIL: {}\n" 'name)
+                      (set-all-succeeded! #f)))
+             body body* ...
+             (printf "--- PASS: {}\n" 'name))))))
+
+
+    (define (fatalf format-string . format-args)
+      (printf "{}: {}\n" (test-name *test-handle*) (apply sprintf format-string format-args))
+      (raise (make-test-error)))
+
+
+    (define-syntax assert
+      (syntax-rules ()
+        ((assert expr)
+         (unless expr
+           (fatalf "(assert {}) failed." 'expr)))))
+
+
+    (define-syntax assert-equal
+      (syntax-rules ()
+        ((assert-equal left right)
+         (let ((x left)
+               (y right))
+           (unless (equal? x y)
+             (fatalf "Fatal: {} is not equal to {}.\nleft is {}\nright is {}" 'left 'right x y))))))
+
+
+    (define-syntax assert-raises
+      (syntax-rules ()
+        ((assert-raises predicate body body* ...)
+         (assert
+           (guard (e ((predicate e) #t))
+             body body* ...
+             #f)))))
+
+
+    (define (test-main)
+      (if *all-tests-succeeded*
+          (printf "PASS\n")
+        (printf "FAIL\n")))))