Migrate more tests from blink repository.

test/webkit/fast/js/regexp-non-capturing-groups.js

Index: test/webkit/fast/js/regexp-non-capturing-groups.js
diff --git a/test/webkit/dfg-inline-constant.js b/test/webkit/fast/js/regexp-non-capturing-groups.js
similarity index 60%
copy from test/webkit/dfg-inline-constant.js
copy to test/webkit/fast/js/regexp-non-capturing-groups.js
index 8c7f7eb63b81646d0c7b1d703cc205d3ffe9b5ad..4d39966349c2f09bdfcf8d7eb3dde7946b03f80d 100644
--- a/test/webkit/dfg-inline-constant.js
+++ b/test/webkit/fast/js/regexp-non-capturing-groups.js
@@ -22,23 +22,21 @@
 // SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 description(
-"This tests that function inlining in the DFG JIT doesn't get confused by constants being reused between inliner and inlinee."
+'Test for behavior of non-capturing groups, as described in <a href="http://blog.stevenlevithan.com/archives/npcg-javascript">' +
+'a blog post by Steven Levithan</a> and <a href="http://bugs.webkit.org/show_bug.cgi?id=14931">bug 14931</a>.'
 );
 
-function foo(a, b) {
-    if (b)
-        return a + 4;
-    return b + 5;
-}
-
-function bar(a, b) {
-    return foo(a, b) + 5;
-}
-
-for (var i = 0; i < 1000; ++i)
-    bar(i, i + 1);
-
-shouldBe("bar(6, 0)", "10");
-shouldBe("bar(6, 1)", "15");
-shouldBe("bar(6, false)", "10");
-shouldBe("bar(6, true)", "15");
+shouldBe('/(x)?\\1y/.test("y")', 'true');
+shouldBe('/(x)?\\1y/.exec("y")', '["y", undefined]');
+shouldBe('/(x)?y/.exec("y")', '["y", undefined]');
+shouldBe('"y".match(/(x)?\\1y/)', '["y", undefined]');
+shouldBe('"y".match(/(x)?y/)', '["y", undefined]');
+shouldBe('"y".match(/(x)?\\1y/g)', '["y"]');
+shouldBe('"y".split(/(x)?\\1y/)', '["", undefined, ""]');
+shouldBe('"y".split(/(x)?y/)', '["", undefined, ""]');
+shouldBe('"y".search(/(x)?\\1y/)', '0');
+shouldBe('"y".replace(/(x)?\\1y/, "z")', '"z"');
+shouldBe('"y".replace(/(x)?y/, "$1")', '""');
+shouldBe('"y".replace(/(x)?\\1y/, function($0, $1){ return String($1); })', '"undefined"');
+shouldBe('"y".replace(/(x)?y/, function($0, $1){ return String($1); })', '"undefined"');
+shouldBe('"y".replace(/(x)?y/, function($0, $1){ return $1; })', '"undefined"');