From 1e5dd9022b0d86d63d616431a0f9959ca4c10f40 Mon Sep 17 00:00:00 2001
From: flywind <43030857+xflywind@users.noreply.github.com>
Date: Sat, 11 Jun 2022 02:33:44 +0800
Subject: [PATCH] [js] add testcase for array indexDefect and remove todo
 (#19838)

* remove unused opcSubstr

* [js] add testcase for array indexDefect

* Revert "remove unused opcSubstr"

This reverts commit cb461f2545234d62c1e0b83318f3e5495c97de52.
---
 lib/system/jssys.nim      | 4 ----
 tests/js/tindexdefect.nim | 9 +++++++++
 2 files changed, 9 insertions(+), 4 deletions(-)
 create mode 100644 tests/js/tindexdefect.nim

diff --git a/lib/system/jssys.nim b/lib/system/jssys.nim
index 00a4a8ab6e..a31de0d86d 100644
--- a/lib/system/jssys.nim
+++ b/lib/system/jssys.nim
@@ -731,10 +731,6 @@ proc parseFloatNative(a: string): float =
   `result` = Number(`a2`);
   """
 
-#[
-xxx how come code like this doesn't give IndexDefect ?
-let z = s[10000] == 'a'
-]#
 proc nimParseBiggestFloat(s: string, number: var BiggestFloat, start: int): int {.compilerproc.} =
   var sign: bool
   var i = start
diff --git a/tests/js/tindexdefect.nim b/tests/js/tindexdefect.nim
new file mode 100644
index 0000000000..37994ec2e7
--- /dev/null
+++ b/tests/js/tindexdefect.nim
@@ -0,0 +1,9 @@
+discard """
+  outputsub: "unhandled exception: index 10000 not in 0 .. 0 [IndexDefect]"
+  exitcode: 1
+  joinable: false
+"""
+
+var s = ['a']
+let z = s[10000] == 'a'
+echo z
\ No newline at end of file