Upgrade V8 to 5.1.281.57 DO NOT MERGE
FPIIM-449
Change-Id: Id981b686b4d587ac31697662eb98bb34be42ad90
(cherry picked from commit 3b9bc31999c9787eb726ecdbfd5796bfdec32a18)
diff --git a/test/mjsunit/harmony/harmony-string-pad-start.js b/test/mjsunit/harmony/harmony-string-pad-start.js
new file mode 100644
index 0000000..2b2d004
--- /dev/null
+++ b/test/mjsunit/harmony/harmony-string-pad-start.js
@@ -0,0 +1,87 @@
+// Copyright 2016 the V8 project authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Flags: --harmony-string-padding
+
+(function TestMeta() {
+ assertEquals(1, String.prototype.padStart.length);
+ assertEquals("function", typeof String.prototype.padStart);
+ assertEquals(Object.getPrototypeOf(Function),
+ Object.getPrototypeOf(String.prototype.padStart));
+ assertEquals("padStart", String.prototype.padStart.name);
+
+ var desc = Object.getOwnPropertyDescriptor(String.prototype, "padStart");
+ assertFalse(desc.enumerable);
+ assertTrue(desc.configurable);
+ assertTrue(desc.writable);
+ assertEquals(undefined, desc.get);
+ assertEquals(undefined, desc.set);
+
+ assertThrows(() => new Function(`${String.prototype.padStart}`), SyntaxError);
+})();
+
+
+(function TestRequireObjectCoercible() {
+ var padStart = String.prototype.padStart;
+ assertThrows(() => padStart.call(null, 4, "test"), TypeError);
+ assertThrows(() => padStart.call(undefined, 4, "test"), TypeError);
+ assertEquals(" 123", padStart.call({
+ __proto__: null,
+ valueOf() { return 123; }
+ }, 6, " "));
+
+ var proxy = new Proxy({}, {
+ get(t, name) {
+ if (name === Symbol.toPrimitive || name === "toString") return;
+ if (name === "valueOf") return () => 6.7;
+ assertUnreachable();
+ }
+ });
+ assertEquals(" 6.7", padStart.call(proxy, 6, " "));
+
+ proxy = new Proxy({}, {
+ get(t, name) {
+ if (name === Symbol.toPrimitive || name === "valueOf") return;
+ if (name === "toString") return () => 6.7;
+ assertUnreachable();
+ }
+ });
+ assertEquals(" 6.7", padStart.call(proxy, 6, " "));
+})();
+
+
+(function TestToLength() {
+ assertThrows(() => "123".padStart(Symbol("16")), TypeError);
+ assertEquals("123", "123".padStart(-1));
+ assertEquals("123", "123".padStart({ toString() { return -1; } }));
+ assertEquals("123", "123".padStart(-0));
+ assertEquals("123", "123".padStart({ toString() { return -0; } }));
+ assertEquals("123", "123".padStart(+0));
+ assertEquals("123", "123".padStart({ toString() { return +0; } }));
+ assertEquals("123", "123".padStart(NaN));
+ assertEquals("123", "123".padStart({ toString() { return NaN; } }));
+})();
+
+
+(function TestFillerToString() {
+ assertEquals(" .", ".".padStart(10));
+ assertEquals(" .", ".".padStart(10, undefined));
+ assertEquals(" .", ".".padStart(10, { toString() { return ""; } }));
+ assertEquals("nullnulln.", ".".padStart(10, null));
+})();
+
+
+(function TestFillerRepetition() {
+ for (var i = 2000; i > 0; --i) {
+ var expected = "xoxo".repeat(i / 4).slice(0, i - 3) + "123";
+ var actual = "123".padStart(i, "xoxo");
+ assertEquals(expected, actual);
+ assertEquals(i > "123".length ? i : 3, actual.length);
+ }
+})();
+
+
+(function TestTruncation() {
+ assertEquals("ba", "a".padStart(2, "bc"));
+})();