summaryrefslogtreecommitdiffstats
path: root/js/src/tests/test262/built-ins/Array/prototype/indexOf/15.4.4.14-4-8.js
diff options
context:
space:
mode:
Diffstat (limited to 'js/src/tests/test262/built-ins/Array/prototype/indexOf/15.4.4.14-4-8.js')
-rw-r--r--js/src/tests/test262/built-ins/Array/prototype/indexOf/15.4.4.14-4-8.js31
1 files changed, 31 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/Array/prototype/indexOf/15.4.4.14-4-8.js b/js/src/tests/test262/built-ins/Array/prototype/indexOf/15.4.4.14-4-8.js
new file mode 100644
index 0000000000..1d182ed052
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Array/prototype/indexOf/15.4.4.14-4-8.js
@@ -0,0 +1,31 @@
+// Copyright (c) 2012 Ecma International. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-array.prototype.indexof
+description: >
+ Array.prototype.indexOf returns -1 if 'length' is 0 (length is an
+ empty array)
+---*/
+
+// objects inherit the default valueOf method of the Object object;
+// that simply returns the itself. Since the default valueOf() method
+// does not return a primitive value, ES next tries to convert the object
+// to a number by calling its toString() method and converting the
+// resulting string to a number.
+//
+// The toString( ) method on Array converts the array elements to strings,
+// then returns the result of concatenating these strings, with commas in
+// between. An array with no elements converts to the empty string, which
+// converts to the number 0. If an array has a single element that is a
+// number n, the array converts to a string representation of n, which is
+// then converted back to n itself. If an array contains more than one element,
+// or if its one element is not a number, the array converts to NaN.
+var i = Array.prototype.indexOf.call({
+ length: []
+}, 1);
+
+
+assert.sameValue(i, -1, 'i');
+
+reportCompare(0, 0);