Port regexp tests from V8 to Dart.

tests/corelib/regexp/multiline_test.dart

Index: tests/corelib/regexp/multiline_test.dart
diff --git a/tests/corelib/regexp/multiline_test.dart b/tests/corelib/regexp/multiline_test.dart
new file mode 100644
index 0000000000000000000000000000000000000000..88222bfb0e242790cf5466a9c61232b4230daf5f
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+++ b/tests/corelib/regexp/multiline_test.dart
@@ -0,0 +1,118 @@
+// Copyright (c) 2014, the Dart project authors. All rights reserved.
+// Copyright 2008 the V8 project authors. All rights reserved.
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+//       notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+//       copyright notice, this list of conditions and the following
+//       disclaimer in the documentation and/or other materials provided
+//       with the distribution.
+//     * Neither the name of Google Inc. nor the names of its
+//       contributors may be used to endorse or promote products derived
+//       from this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+/**
+ * @fileoverview Check that various regexp constructs work as intended.
+ * Particularly those regexps that use ^ and $.
+ */
+
+import 'v8_regexp_utils.dart';
+import 'package:expect/expect.dart';
+
+void main() {
+  assertTrue(new RegExp(r"^bar").hasMatch("bar"));
+  assertTrue(new RegExp(r"^bar").hasMatch("bar\nfoo"));
+  assertFalse(new RegExp(r"^bar").hasMatch("foo\nbar"));
+  assertTrue(new RegExp(r"^bar", multiLine: true).hasMatch("bar"));
+  assertTrue(new RegExp(r"^bar", multiLine: true).hasMatch("bar\nfoo"));
+  assertTrue(new RegExp(r"^bar", multiLine: true).hasMatch("foo\nbar"));
+
+  assertTrue(new RegExp(r"bar$").hasMatch("bar"));
+  assertFalse(new RegExp(r"bar$").hasMatch("bar\nfoo"));
+  assertTrue(new RegExp(r"bar$").hasMatch("foo\nbar"));
+  assertTrue(new RegExp(r"bar$", multiLine: true).hasMatch("bar"));
+  assertTrue(new RegExp(r"bar$", multiLine: true).hasMatch("bar\nfoo"));
+  assertTrue(new RegExp(r"bar$", multiLine: true).hasMatch("foo\nbar"));
+
+  assertFalse(new RegExp(r"^bxr").hasMatch("bar"));
+  assertFalse(new RegExp(r"^bxr").hasMatch("bar\nfoo"));
+  assertFalse(new RegExp(r"^bxr", multiLine: true).hasMatch("bar"));
+  assertFalse(new RegExp(r"^bxr", multiLine: true).hasMatch("bar\nfoo"));
+  assertFalse(new RegExp(r"^bxr", multiLine: true).hasMatch("foo\nbar"));
+
+  assertFalse(new RegExp(r"bxr$").hasMatch("bar"));
+  assertFalse(new RegExp(r"bxr$").hasMatch("foo\nbar"));
+  assertFalse(new RegExp(r"bxr$", multiLine: true).hasMatch("bar"));
+  assertFalse(new RegExp(r"bxr$", multiLine: true).hasMatch("bar\nfoo"));
+  assertFalse(new RegExp(r"bxr$", multiLine: true).hasMatch("foo\nbar"));
+
+
+  assertTrue(new RegExp(r"^.*$").hasMatch(""));
+  assertTrue(new RegExp(r"^.*$").hasMatch("foo"));
+  assertFalse(new RegExp(r"^.*$").hasMatch("\n"));
+  assertTrue(new RegExp(r"^.*$", multiLine: true).hasMatch("\n"));
+
+  assertTrue(new RegExp(r"^[\s]*$").hasMatch(" "));
+  assertTrue(new RegExp(r"^[\s]*$").hasMatch("\n"));
+
+  assertTrue(new RegExp(r"^[^]*$").hasMatch(""));
+  assertTrue(new RegExp(r"^[^]*$").hasMatch("foo"));
+  assertTrue(new RegExp(r"^[^]*$").hasMatch("\n"));
+
+  assertTrue(new RegExp(r"^([()\s]|.)*$").hasMatch("()\n()"));
+  assertTrue(new RegExp(r"^([()\n]|.)*$").hasMatch("()\n()"));
+  assertFalse(new RegExp(r"^([()]|.)*$").hasMatch("()\n()"));
+  assertTrue(new RegExp(r"^([()]|.)*$", multiLine: true).hasMatch("()\n()"));
+  assertTrue(new RegExp(r"^([()]|.)*$", multiLine: true).hasMatch("()\n"));
+  assertTrue(new RegExp(r"^[()]*$", multiLine: true).hasMatch("()\n."));
+
+  assertTrue(new RegExp(r"^[\].]*$").hasMatch("...]..."));
+
+
+  dynamic check_case(lc, uc) {
+    var a = new RegExp("^" + lc + r"$");
+    assertFalse(a.hasMatch(uc));
+    a = new RegExp("^" + lc + r"$", caseSensitive: false);
+    assertTrue(a.hasMatch(uc));
+
+    var A = new RegExp("^" + uc + r"$");
+    assertFalse(A.hasMatch(lc));
+    A = new RegExp("^" + uc + r"$", caseSensitive: false);
+    assertTrue(A.hasMatch(lc));
+
+    a = new RegExp("^[" + lc + r"]$");
+    assertFalse(a.hasMatch(uc));
+    a = new RegExp("^[" + lc + r"]$", caseSensitive: false);
+    assertTrue(a.hasMatch(uc));
+
+    A = new RegExp("^[" + uc + r"]$");
+    assertFalse(A.hasMatch(lc));
+    A = new RegExp("^[" + uc + r"]$", caseSensitive: false);
+    assertTrue(A.hasMatch(lc));
+  }
+
+
+  check_case("a", "A");
+  // Aring
+  check_case(new String.fromCharCode(229), new String.fromCharCode(197));
+  // Russian G
+  check_case(new String.fromCharCode(0x413), new String.fromCharCode(0x433));
+
+
+  assertThrows(() => new RegExp('[z-a]'));
+}