Refactor android_webview_shell and its tests

android_webview/tools/WebViewShell/test/resources/js-test.js

-// Copyright 2015 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-debug = function debug(msg)
-{
-    console.log(msg);
-};
-
-description = function description(msg, quiet)
-{
-    console.log(msg);
-};
-
-finishJSTest = function finishJSTest() {
-    console.log("TEST FINISHED");
-};
-
-function handleTestFinished() {
-    if (!window.jsTestIsAsync)
-        finishJSTest();
-}
-
-function testFailed(msg) {
-    debug('FAIL: ' + msg);
-}
-
-function testPassed(msg)
-{
-    debug('PASS: ' + msg);
-}
-
-function isWorker()
-{
-    // It's conceivable that someone would stub out 'document' in a worker so
-    // also check for childNodes, an arbitrary DOM-related object that is
-    // meaningless in a WorkerContext.
-    return (typeof document === 'undefined' ||
-            typeof document.childNodes === 'undefined') && !!self.importScripts;
-}
-
-if (!isWorker()) {
-    window.addEventListener('DOMContentLoaded', handleTestFinished, false);
-}
-
-
-// Functions in common with js-test.js in blink,
-// see third_party/WebKit/LayoutTests/resources/js-test.js
-
-function areArraysEqual(a, b)
-{
-    try {
-        if (a.length !== b.length)
-            return false;
-        for (var i = 0; i < a.length; i++)
-            if (a[i] !== b[i])
-                return false;
-    } catch (ex) {
-        return false;
-    }
-    return true;
-}
-
-// Returns a sorted array of property names of object.  This function returns
-// not only own properties but also properties on prototype chains.
-function getAllPropertyNames(object) {
-    var properties = [];
-    for (var property in object) {
-        properties.push(property);
-    }
-    return properties.sort();
-}
-
-function isNewSVGTearOffType(v)
-{
-    return ['[object SVGLength]', '[object SVGLengthList]',
-            '[object SVGPoint]', '[object SVGPointList]',
-            '[object SVGNumber]', '[object SVGTransform]',
-            '[object SVGTransformList]'].indexOf(""+v) != -1;
-}
-
-function stringify(v)
-{
-    if (isNewSVGTearOffType(v))
-        return v.valueAsString;
-    if (v === 0 && 1/v < 0)
-        return "-0";
-    else return "" + v;
-}
-
-function isResultCorrect(actual, expected)
-{
-    if (expected === 0)
-        return actual === expected && (1/actual) === (1/expected);
-    if (actual === expected)
-        return true;
-    // http://crbug.com/308818 : The new implementation of SVGListProperties
-    // do not necessary return the same wrapper object, so === operator would
-    // not work. We compare for their string representation instead.
-    if (isNewSVGTearOffType(expected) && typeof(expected) == typeof(actual)
-            && actual.valueAsString == expected.valueAsString)
-        return true;
-    if (typeof(expected) == "number" && isNaN(expected))
-        return typeof(actual) == "number" && isNaN(actual);
-    if (expected && (Object.prototype.toString.call(expected)
-                     == Object.prototype.toString.call([])))
-        return areArraysEqual(actual, expected);
-    return false;
-}
-
-function shouldBe(_a, _b, quiet, opt_tolerance)
-{
-    if (typeof _a != "string" || typeof _b != "string")
-        debug("WARN: shouldBe() expects string arguments");
-    var _exception;
-    var _av;
-    try {
-        _av = eval(_a);
-    } catch (e) {
-        _exception = e;
-    }
-    var _bv = eval(_b);
-
-    if (_exception)
-        testFailed(_a + " should be " + _bv + ". Threw exception "
-                + _exception);
-    else if (isResultCorrect(_av, _bv)
-            || (typeof opt_tolerance == 'number' && typeof _av == 'number'
-                && Math.abs(_av - _bv) <= opt_tolerance)) {
-        if (!quiet) {
-            testPassed(_a + " is " + _b);
-        }
-    } else if (typeof(_av) == typeof(_bv)) {
-        testFailed(_a + " should be " + _bv + ". Was " + stringify(_av) + ".");
-    } else {
-        testFailed(_a + " should be " + _bv + " (of type " + typeof _bv
-                + "). Was " + _av + " (of type " + typeof _av + ").");
-    }
-}
-
-function shouldBeEqualToString(a, b)
-{
-    if (typeof a !== "string" || typeof b !== "string")
-        debug("WARN: shouldBeEqualToString() expects string arguments");
-    var unevaledString = JSON.stringify(b);
-    shouldBe(a, unevaledString);
-}
-
-function shouldBeTrue(a, quiet) { shouldBe(a, "true", quiet); }
-function shouldBeFalse(a, quiet) { shouldBe(a, "false", quiet); }