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-rw-r--r--js/src/jit-test/tests/ion/array-splice.js37
1 files changed, 37 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/ion/array-splice.js b/js/src/jit-test/tests/ion/array-splice.js
new file mode 100644
index 000000000..f75224d7a
--- /dev/null
+++ b/js/src/jit-test/tests/ion/array-splice.js
@@ -0,0 +1,37 @@
+function test1() {
+ // splice GetElement calls are observable and should be executed even if
+ // the return value of splice is unused.
+ Object.defineProperty(Object.prototype, "0", {get: function() {
+ c++;
+ }, set: function() {}});
+ var arr = [,,,];
+ var c = 0;
+ for (var i=0; i<100; i++) {
+ arr.splice(0, 1);
+ arr.length = 1;
+ }
+
+ assertEq(c, 100);
+}
+test1();
+
+function test2() {
+ var arr = [];
+ for (var i=0; i<100; i++)
+ arr.push(i);
+ for (var i=0; i<40; i++)
+ arr.splice(0, 2);
+ assertEq(arr.length, 20);
+ assertEq(arr[0], 80);
+}
+test2();
+
+function testNonArray() {
+ for (var i=0; i<10; i++) {
+ var o = {splice:[].splice, 0:"a", 1:"b", 2:"c", length:3};
+ o.splice(0, 2);
+ assertEq(o.length, 1);
+ assertEq(o[0], "c");
+ }
+}
+testNonArray();