Migrated several tests from blink to V8 repository.

test/webkit/array-lastIndexOf.js

Index: test/webkit/array-lastIndexOf.js
diff --git a/test/webkit/concat-while-having-a-bad-time.js b/test/webkit/array-lastIndexOf.js
similarity index 53%
copy from test/webkit/concat-while-having-a-bad-time.js
copy to test/webkit/array-lastIndexOf.js
index dfda1e08a0b36194b787a44ee12a9693acd8aeaf..adc593ed1f2ee7629b25d439650e41c02ed5bddf 100644
--- a/test/webkit/concat-while-having-a-bad-time.js
+++ b/test/webkit/array-lastIndexOf.js
@@ -22,10 +22,54 @@
 // SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 description(
-"Tests the behavior of Array.prototype.concat while the array is having a bad time due to one of the elements we are concatenating."
+'This test checks lastIndexOf for various values in an array'
 );
 
-Object.defineProperty(Array.prototype, 0, { writable: false });
-shouldBe("[42].concat()", "[42]");
 
+var testArray = [2, 5, 9, 2];
+var lastIndex = 0;
 
+lastIndex = testArray.lastIndexOf(2,-500);
+shouldBe('lastIndex', '-1');
+lastIndex = testArray.lastIndexOf(9,500);
+shouldBe('lastIndex', '2');
+lastIndex = testArray.lastIndexOf(2);
+shouldBe('lastIndex', '3');
+lastIndex = testArray.lastIndexOf(7);
+shouldBe('lastIndex', '-1');
+lastIndex = testArray.lastIndexOf(2, 3);
+shouldBe('lastIndex', '3');
+lastIndex = testArray.lastIndexOf(2, 2);
+shouldBe('lastIndex', '0');
+lastIndex = testArray.lastIndexOf(2, -2);
+shouldBe('lastIndex', '0');
+lastIndex = testArray.lastIndexOf(2, -1);
+shouldBe('lastIndex', '3');
+
+delete testArray[1];
+
+lastIndex = testArray.lastIndexOf(undefined);
+shouldBe('lastIndex', '-1');
+
+delete testArray[3];
+
+lastIndex = testArray.lastIndexOf(undefined);
+shouldBe('lastIndex', '-1');
+
+testArray = new Array(20);
+
+lastIndex = testArray.lastIndexOf(undefined);
+shouldBe('lastIndex', '-1');
+
+testArray[19] = undefined;
+
+lastIndex = testArray.lastIndexOf(undefined);
+shouldBe('lastIndex', '19');
+
+lastIndex = testArray.lastIndexOf(undefined, 18);
+shouldBe('lastIndex', '-1');
+
+delete testArray[19];
+
+lastIndex = testArray.lastIndexOf(undefined);
+shouldBe('lastIndex', '-1');