Save :source-form in environment when debugging is enabled.

test/helper.janet

@@ -4,14 +4,20 @@
 (var num-tests-run 0)
 (var suite-name 0)
 (var start-time 0)
+(var skip-count 0)
+(var skip-n 0)
 
 (def is-verbose (os/getenv "VERBOSE"))
 
 (defn- assert-no-tail
   "Override's the default assert with some nice error handling."
   [x &opt e]
-  (default e "assert error")
   (++ num-tests-run)
+  (when (pos? skip-n)
+    (-- skip-n)
+    (++ skip-count)
+    (break x))
+  (default e "assert error")
   (when x (++ num-tests-passed))
   (def str (string e))
   (def stack (debug/stack (fiber/current)))
@@ -24,9 +30,16 @@
       (eprintf "\e[31m✘\e[0m %s: %s: %v" line-info (describe e) x) (eflush)))
   x)
 
+(defn skip-asserts
+  "Skip some asserts"
+  [n]
+  (+= skip-n n)
+  nil)
+
 (defmacro assert
   [x &opt e]
   (def xx (gensym))
+  (default e ~',x)
   ~(do
      (def ,xx ,x)
      (,assert-no-tail ,xx ,e)
@@ -62,8 +75,8 @@
 (defn end-suite []
   (def delta (- (os/clock) start-time))
   (eprinf "Finished suite %s in %.3f seconds - " suite-name delta)
-  (eprint num-tests-passed " of " num-tests-run " tests passed.")
-  (if (not= num-tests-passed num-tests-run) (os/exit 1)))
+  (eprint num-tests-passed " of " num-tests-run " tests passed (" skip-count " skipped).")
+  (if (not= (+ skip-count num-tests-passed) num-tests-run) (os/exit 1)))
 
 (defn rmrf
   "rm -rf in janet"