Migrated several tests from blink to V8 repository.

test/webkit/comparison-operators.js

+// Copyright 2013 the V8 project authors. All rights reserved.
+// Copyright (C) 2005, 2006, 2007, 2008, 2009 Apple Inc. All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions
+// are met:
+// 1.  Redistributions of source code must retain the above copyright
+//     notice, this list of conditions and the following disclaimer.
+// 2.  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.
+//
+// THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS 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 APPLE INC. OR ITS 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.
+
+description("test that comparison operators work correctly.")
+
+function makeTest(start, end, expression, relationship, override, invert) {
+    var resultValue = eval(relationship + expression + 0) || !!override;
+    if (invert)
+        resultValue = !resultValue;
+    var expr = start + expression + end;
+    var result = [];
+    function func(content) { var f = new Function(content); f.toString = function(){ return content}; return f; }
+    result.push([new func("return " + expr + ";"), resultValue]);
+    result.push([new func("if (" + expr + ") return true; return false;"), resultValue]);
+    result.push([new func("var k = 0; while (" + expr + ") if (k++) return true; return false;"), resultValue]);
+    result.push([new func("var k = 0; for (; " + expr + "; ) if (k++) return true; return false;"), resultValue]);
+    return result;
+}
+function doTest(lhs, rhs, relationship) {
+    var expressionParts = [["(",")"],["(", ") || 1", true],["(", ") && 1"],["(", ") || 1", true],["1 || (",")", true],["1 && (",")"]];
+    var expressions = [];
+    var tests = [];
+    for (var i = 0; i < expressionParts.length; i++) {
+        var start = expressionParts[i][0] + lhs;
+        var end = String(rhs) + expressionParts[i][1];
+        tests.push.apply(tests, makeTest(start, end, "==", relationship, expressionParts[i][2]));
+        tests.push.apply(tests, makeTest(start, end, "!=", relationship, expressionParts[i][2]));
+        tests.push.apply(tests, makeTest(start, end, "===", relationship, expressionParts[i][2]));
+        tests.push.apply(tests, makeTest(start, end, "!==", relationship, expressionParts[i][2]));
+    }
+    for (var i = 0; i < tests.length; i++) {
+        if ((r=tests[i][0]()) == tests[i][1])
+            testPassed(tests[i][0] + " is " + tests[i][1]);
+        else
+            testFailed(tests[i][0] + " is " + r + " and should be " + tests[i][1] + ".");
+    }
+}
+
+var letterA = "a";
+var letterB = "b";
+var One = 1;
+var Zero = 0;
+doTest('"a"', '"b"', -1);
+doTest('"a"', '"a"', 0);
+doTest('"b"', '"a"', 1);
+doTest('letterA', '"b"', -1);
+doTest('letterA', '"a"', 0);
+doTest('"b"', '"a"', 1);
+doTest('letterA', '"b"', -1);
+doTest('letterA', 'letterA', 0);
+doTest('"b"', 'letterA', 1);
+doTest('"a"', '"b"', -1);
+doTest('"a"', 'letterA', 0);
+doTest('"b"', 'letterA', 1);
+
+doTest('"a"', '0', NaN);
+doTest('0', '"a"', NaN);
+doTest('letterA', '0', NaN);
+doTest('letterA', '"a"', 0);
+doTest('0', '"a"', NaN);
+doTest('letterA', 'letterA', 0);
+doTest('0', 'letterA', NaN);
+doTest('"a"', 'letterA', 0);
+doTest('0', 'letterA', NaN);
+
+
+doTest('0', '1', -1);
+doTest('0', '0', 0);
+doTest('1', '0', 1);
+doTest('Zero', '1', -1);
+doTest('Zero', '0', 0);
+doTest('1', 'Zero', 1);
+doTest('0', 'One', -1);
+doTest('One', '0', 1);