Migrated several tests from blink to V8 repository.

test/webkit/polymorphic-construct.js

Index: test/webkit/polymorphic-construct.js
diff --git a/test/webkit/concat-while-having-a-bad-time.js b/test/webkit/polymorphic-construct.js
similarity index 74%
copy from test/webkit/concat-while-having-a-bad-time.js
copy to test/webkit/polymorphic-construct.js
index dfda1e08a0b36194b787a44ee12a9693acd8aeaf..1a447b4e20e2086c66b1098fcf7208f742bbe7ce 100644
--- a/test/webkit/concat-while-having-a-bad-time.js
+++ b/test/webkit/polymorphic-construct.js
@@ -22,10 +22,31 @@
 // 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 tests that polymorphic construction works correctly."
 );
 
-Object.defineProperty(Array.prototype, 0, { writable: false });
-shouldBe("[42].concat()", "[42]");
+function Foo() {
+    this.field = "foo";
+}
 
+function Bar() {
+    this.field = "bar";
+}
 
+function Baz() {
+    this.field = "baz";
+}
+
+function construct(what) {
+    return new what();
+}
+
+for (var i = 0; i < 3; ++i) {
+    shouldBe("construct(Foo).field", "'foo'");
+}
+
+for (var i = 0; i < 3; ++i) {
+    shouldBe("construct(Foo).field", "'foo'");
+    shouldBe("construct(Bar).field", "'bar'");
+    shouldBe("construct(Baz).field", "'baz'");
+}