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janet/test/helper.janet
Calvin Rose 7d57f87007 Address #1121 - disallow extra splices.
This turns splices that are ignored into compiler errors. Other
alternatives here should also be considered, for example making this
a compiler warning rather than an error. For example, the latest
spork as of a3ee63c137ee3234987dbbca71b566994ff8ae8c has an error of this
kind, but the resulting program does work correctly.

Also disallow splice propagation - code of the
form (+ 1 (do ;[2 3 4]) 5).
2023-05-06 13:12:31 -05:00

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# Helper code for running tests
(var num-tests-passed 0)
(var num-tests-run 0)
(var suite-num 0)
(var start-time 0)
(def is-verbose (os/getenv "VERBOSE"))
(defn assert
"Override's the default assert with some nice error handling."
[x &opt e]
(default e "assert error")
(++ num-tests-run)
(when x (++ num-tests-passed))
(def str (string e))
(if x
(when is-verbose (eprintf "\e[32m✔\e[0m %s: %v" (describe e) x))
(eprintf "\e[31m✘\e[0m %s: %v" (describe e) x))
x)
(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 errsym (keyword (gensym)))
~(assert (not= ,errsym (try (do ,;forms) ([_] ,errsym))) ,msg))
(defn start-suite [x]
(set suite-num x)
(set start-time (os/clock))
(eprint "Starting suite " x "..."))
(defn end-suite []
(def delta (- (os/clock) start-time))
(eprinf "Finished suite %d in %.3f seconds - " suite-num delta)
(eprint num-tests-passed " of " num-tests-run " tests passed.")
(if (not= num-tests-passed num-tests-run) (os/exit 1)))