description("This page tests handling of parentheses subexpressions.");

var regexp1 = /.*blah.*/;
shouldBeNull("regexp1.exec('test')");
shouldBe("regexp1.exec('blah')", "['blah']");
shouldBe("regexp1.exec('1blah')", "['1blah']");
shouldBe("regexp1.exec('blah1')", "['blah1']");
shouldBe("regexp1.exec('blah blah blah')", "['blah blah blah']");
shouldBe("regexp1.exec('blah\\nsecond')", "['blah']");
shouldBe("regexp1.exec('first\\nblah')", "['blah']");
shouldBe("regexp1.exec('first\\nblah\\nthird')", "['blah']");
shouldBe("regexp1.exec('first\\nblah2\\nblah3')", "['blah2']");

var regexp2 = /^.*blah.*/;
shouldBeNull("regexp2.exec('test')");
shouldBe("regexp2.exec('blah')", "['blah']");
shouldBe("regexp2.exec('1blah')", "['1blah']");
shouldBe("regexp2.exec('blah1')", "['blah1']");
shouldBe("regexp2.exec('blah blah blah')", "['blah blah blah']");
shouldBe("regexp2.exec('blah\\nsecond')", "['blah']");
shouldBeNull("regexp2.exec('first\\nblah')");
shouldBeNull("regexp2.exec('first\\nblah\\nthird')");
shouldBeNull("regexp2.exec('first\\nblah2\\nblah3')");

var regexp3 = /.*blah.*$/;
shouldBeNull("regexp3.exec('test')");
shouldBe("regexp3.exec('blah')", "['blah']");
shouldBe("regexp3.exec('1blah')", "['1blah']");
shouldBe("regexp3.exec('blah1')", "['blah1']");
shouldBe("regexp3.exec('blah blah blah')", "['blah blah blah']");
shouldBeNull("regexp3.exec('blah\\nsecond')");
shouldBe("regexp3.exec('first\\nblah')", "['blah']");
shouldBeNull("regexp3.exec('first\\nblah\\nthird')");
shouldBe("regexp3.exec('first\\nblah2\\nblah3')", "['blah3']");

var regexp4 = /^.*blah.*$/;
shouldBeNull("regexp4.exec('test')");
shouldBe("regexp4.exec('blah')", "['blah']");
shouldBe("regexp4.exec('1blah')", "['1blah']");
shouldBe("regexp4.exec('blah1')", "['blah1']");
shouldBe("regexp4.exec('blah blah blah')", "['blah blah blah']");
shouldBeNull("regexp4.exec('blah\\nsecond')");
shouldBeNull("regexp4.exec('first\\nblah')");
shouldBeNull("regexp4.exec('first\\nblah\\nthird')");
shouldBeNull("regexp4.exec('first\\nblah2\\nblah3')");

var regexp5 = /.*?blah.*/;
shouldBeNull("regexp5.exec('test')");
shouldBe("regexp5.exec('blah')", "['blah']");
shouldBe("regexp5.exec('1blah')", "['1blah']");
shouldBe("regexp5.exec('blah1')", "['blah1']");
shouldBe("regexp5.exec('blah blah blah')", "['blah blah blah']");
shouldBe("regexp5.exec('blah\\nsecond')", "['blah']");
shouldBe("regexp5.exec('first\\nblah')", "['blah']");
shouldBe("regexp5.exec('first\\nblah\\nthird')", "['blah']");
shouldBe("regexp5.exec('first\\nblah2\\nblah3')", "['blah2']");

var regexp6 = /.*blah.*?/;
shouldBeNull("regexp6.exec('test')");
shouldBe("regexp6.exec('blah')", "['blah']");
shouldBe("regexp6.exec('1blah')", "['1blah']");
shouldBe("regexp6.exec('blah1')", "['blah']");
shouldBe("regexp6.exec('blah blah blah')", "['blah blah blah']");
shouldBe("regexp6.exec('blah\\nsecond')", "['blah']");
shouldBe("regexp6.exec('first\\nblah')", "['blah']");
shouldBe("regexp6.exec('first\\nblah\\nthird')", "['blah']");
shouldBe("regexp6.exec('first\\nblah2\\nblah3')", "['blah']");

var regexp7 = /^.*?blah.*?$/;
shouldBeNull("regexp7.exec('test')");
shouldBe("regexp7.exec('blah')", "['blah']");
shouldBe("regexp7.exec('1blah')", "['1blah']");
shouldBe("regexp7.exec('blah1')", "['blah1']");
shouldBe("regexp7.exec('blah blah blah')", "['blah blah blah']");
shouldBeNull("regexp7.exec('blah\\nsecond')");
shouldBeNull("regexp7.exec('first\\nblah')");
shouldBeNull("regexp7.exec('first\\nblah\\nthird')");
shouldBeNull("regexp7.exec('first\\nblah2\\nblah3')");

var regexp8 = /^(.*)blah.*$/;
shouldBeNull("regexp8.exec('test')");
shouldBe("regexp8.exec('blah')", "['blah','']");
shouldBe("regexp8.exec('1blah')", "['1blah','1']");
shouldBe("regexp8.exec('blah1')", "['blah1','']");
shouldBe("regexp8.exec('blah blah blah')", "['blah blah blah','blah blah ']");
shouldBeNull("regexp8.exec('blah\\nsecond')");
shouldBeNull("regexp8.exec('first\\nblah')");
shouldBeNull("regexp8.exec('first\\nblah\\nthird')");
shouldBeNull("regexp8.exec('first\\nblah2\\nblah3')");

var regexp9 = /.*blah.*/m;
shouldBeNull("regexp9.exec('test')");
shouldBe("regexp9.exec('blah')", "['blah']");
shouldBe("regexp9.exec('1blah')", "['1blah']");
shouldBe("regexp9.exec('blah1')", "['blah1']");
shouldBe("regexp9.exec('blah blah blah')", "['blah blah blah']");
shouldBe("regexp9.exec('blah\\nsecond')", "['blah']");
shouldBe("regexp9.exec('first\\nblah')", "['blah']");
shouldBe("regexp9.exec('first\\nblah\\nthird')", "['blah']");
shouldBe("regexp9.exec('first\\nblah2\\nblah3')", "['blah2']");

var regexp10 = /^.*blah.*/m;
shouldBeNull("regexp10.exec('test')");
shouldBe("regexp10.exec('blah')", "['blah']");
shouldBe("regexp10.exec('1blah')", "['1blah']");
shouldBe("regexp10.exec('blah1')", "['blah1']");
shouldBe("regexp10.exec('blah blah blah')", "['blah blah blah']");
shouldBe("regexp10.exec('blah\\nsecond')", "['blah']");
shouldBe("regexp10.exec('first\\nblah')", "['blah']");
shouldBe("regexp10.exec('first\\nblah\\nthird')", "['blah']");
shouldBe("regexp10.exec('first\\nblah2\\nblah3')", "['blah2']");

var regexp11 = /.*(?:blah).*$/;
shouldBeNull("regexp11.exec('test')");
shouldBe("regexp11.exec('blah')", "['blah']");
shouldBe("regexp11.exec('1blah')", "['1blah']");
shouldBe("regexp11.exec('blah1')", "['blah1']");
shouldBe("regexp11.exec('blah blah blah')", "['blah blah blah']");
shouldBeNull("regexp11.exec('blah\\nsecond')");
shouldBe("regexp11.exec('first\\nblah')", "['blah']");
shouldBeNull("regexp11.exec('first\\nblah\\nthird')");
shouldBe("regexp11.exec('first\\nblah2\\nblah3')", "['blah3']");

var regexp12 = /.*(?:blah|buzz|bang).*$/;
shouldBeNull("regexp12.exec('test')");
shouldBe("regexp12.exec('blah')", "['blah']");
shouldBe("regexp12.exec('1blah')", "['1blah']");
shouldBe("regexp12.exec('blah1')", "['blah1']");
shouldBe("regexp12.exec('blah blah blah')", "['blah blah blah']");
shouldBeNull("regexp12.exec('blah\\nsecond')");
shouldBe("regexp12.exec('first\\nblah')", "['blah']");
shouldBeNull("regexp12.exec('first\\nblah\\nthird')");
shouldBe("regexp12.exec('first\\nblah2\\nblah3')", "['blah3']");

var regexp13 = /.*\n\d+.*/;
shouldBe("regexp13.exec('abc\\n123')", "['abc\\n123']");

var regexp14 = /.?d.*/;
shouldBe("regexp14.exec('abcdefg')", "['cdefg']");

var regexp15 = /.*d.?/;
shouldBe("regexp15.exec('abcdefg')", "['abcde']");

var regexp16 = /.?d.?/;
shouldBe("regexp16.exec('abcdefg')", "['cde']");

var regexp17 = /.{0,2}d.*/;
shouldBe("regexp17.exec('abcdefg')", "['bcdefg']");

var regexp18 = /.*d.{0,2}/;
shouldBe("regexp18.exec('abcdefg')", "['abcdef']");

var regexp19 = /.{0,2}d.{0,2}/;
shouldBe("regexp19.exec('abcdefg')", "['bcdef']");