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janet/test/helper.janet

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# Helper code for running tests
(var num-tests-passed 0)
(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]
(++ 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)))
(def frame (last stack))
(def line-info (string/format "%s:%d"
(frame :source) (frame :source-line)))
(if x
(when is-verbose (eprintf "\e[32m✔\e[0m %s: %s: %v" line-info (describe e) x))
(do
(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)
,xx))
(defmacro assert-error
[msg & forms]
(def errsym (keyword (gensym)))
~(assert (= ,errsym (try (do ,;forms) ([_] ,errsym))) ,msg))
(defn check-compile-error
[form]
(def result (compile form))
(assert (table? result) (string/format "expected compilation error for %j, but compiled without error" form)))
(defmacro assert-no-error
[msg & forms]
(def e (gensym))
(def f (gensym))
(if is-verbose
~(try (do ,;forms (,assert true ,msg)) ([,e ,f] (,assert false ,msg) (,debug/stacktrace ,f ,e "\e[31m✘\e[0m ")))
~(try (do ,;forms (,assert true ,msg)) ([_] (,assert false ,msg)))))
(defn start-suite [&opt x]
(default x (dyn :current-file))
(set suite-name
(cond
(number? x) (string x)
(string x)))
(set start-time (os/clock))
(eprint "Starting suite " suite-name "..."))
(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 (" skip-count " skipped).")
(if (not= (+ skip-count num-tests-passed) num-tests-run) (os/exit 1)))
(defn rmrf
"rm -rf in janet"
[x]
(case (os/lstat x :mode)
nil nil
:directory (do
(each y (os/dir x)
(rmrf (string x "/" y)))
(os/rmdir x))
(os/rm x))
nil)
(defn randdir
"Get a random directory name"
[]
(string "tmp_dir_" (slice (string (math/random) ".tmp") 2)))