Add m-esr52 at 52.6.0

1 files changed, 85 insertions, 0 deletions

diff --git a/js/src/tests/ecma_5/extensions/nested-delete-name-in-evalcode.js b/js/src/tests/ecma_5/extensions/nested-delete-name-in-evalcode.js
new file mode 100644
index 000000000..7dfab0458
--- /dev/null
+++ b/js/src/tests/ecma_5/extensions/nested-delete-name-in-evalcode.js
@@ -0,0 +1,85 @@
+// Any copyright is dedicated to the Public Domain.
+// http://creativecommons.org/licenses/publicdomain/
+
+//-----------------------------------------------------------------------------
+var BUGNUMBER = 616294;
+var summary =
+  "|delete x| inside a function in eval code, where that eval code includes " +
+  "|var x| at top level, actually does delete the binding for x";
+
+print(BUGNUMBER + ": " + summary);
+
+/**************
+ * BEGIN TEST *
+ **************/
+
+var f;
+
+function testOuterLet()
+{
+  return eval("let x; (function() { return delete x; })");
+}
+
+f = testOuterLet();
+
+assertEq(f(), false); // can't delete lexical declarations => false
+
+
+function testOuterForLet()
+{
+  return eval("for (let x; false; ); (function() { return delete x; })");
+}
+
+f = testOuterForLet();
+
+assertEq(f(), true); // not there => true (only non-configurable => false)
+
+
+function testOuterForInLet()
+{
+  return eval("for (let x in {}); (function() { return delete x; })");
+}
+
+f = testOuterForInLet();
+
+assertEq(f(), true); // configurable, so remove => true
+assertEq(f(), true); // not there => true (only non-configurable => false)
+
+
+function testOuterNestedVarInForLet()
+{
+  return eval("for (let q = 0; q < 5; q++) { var x; } (function() { return delete x; })");
+}
+
+f = testOuterNestedVarInForLet();
+
+assertEq(f(), true); // configurable, so remove => true
+assertEq(f(), true); // there => true
+
+
+function testArgumentShadowLet()
+{
+  return eval("let x; (function(x) { return delete x; })");
+}
+
+f = testArgumentShadowLet();
+
+assertEq(f(), false); // non-configurable argument => false
+
+
+function testFunctionLocal()
+{
+  return eval("(function() { let x; return delete x; })");
+}
+
+f = testFunctionLocal();
+
+assertEq(f(), false); // defined by function code => not configurable => false
+
+
+/******************************************************************************/
+
+if (typeof reportCompare === "function")
+  reportCompare(true, true);
+
+print("All tests passed!");