js: improve tests + some docs (#16727)

* js: improve tests * _ * _ * _ * fixup
2021-01-16 03:08:40 -08:00 · 2021-01-16 03:08:40 -08:00 · 18e14f5920
commit 18e14f5920
parent e4a529962e
5 changed files with 175 additions and 253 deletions
--- a/tests/stdlib/tjsbigints.nim
+++ b/tests/stdlib/tjsbigints.nim
@ -36,3 +36,9 @@ for i in big"0" ..< big"5":
  doAssert i is JsBigInt
  list.add i
 doAssert list == @[big"0", big"1", big"2", big"3", big"4"]
+
+block:
+  let b = big"2"
+  doAssert -b ** big"3" == big"-8"
+  doAssert -b ** big"2" == big"4" # not -4 because of precedence
+  doAssert -big"3" == big"-3"