Migrated several tests from blink to V8 repository.

test/webkit/array-tostring-and-join.js

Index: test/webkit/array-tostring-and-join.js
diff --git a/test/webkit/concat-while-having-a-bad-time.js b/test/webkit/array-tostring-and-join.js
similarity index 85%
copy from test/webkit/concat-while-having-a-bad-time.js
copy to test/webkit/array-tostring-and-join.js
index dfda1e08a0b36194b787a44ee12a9693acd8aeaf..b4fdb51b47f0b450a53fc725a133c27a21c5375d 100644
--- a/test/webkit/concat-while-having-a-bad-time.js
+++ b/test/webkit/array-tostring-and-join.js
@@ -22,10 +22,15 @@
 // 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."
-);
 
-Object.defineProperty(Array.prototype, 0, { writable: false });
-shouldBe("[42].concat()", "[42]");
+"This test checks that toString and join share the same HashSet for visited elements."
+
+);
 
+var arr = [1, 2];
+var obj = {};
+obj.__proto__.toString = function() { return "*" + arr + "*"; }
+arr[2] = arr;
+arr[3] = obj;
 
+shouldBe("arr.join()", "'1,2,,**'");