Created
December 22, 2011 00:38
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JS中級コース向 サンプルコード
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| // 実装 ： 一箇所バグあり | |
| Date.prototype.strftime = (function () { | |
| function strftime(format) { | |
| var date = this; | |
| return (format + "").replace(/%([a-zA-Z])/g, | |
| function (m, f) { | |
| var formatter = Date.formats && Date.formats[f]; | |
| if (typeof formatter == "function") { | |
| return formatter.call(Date.formats, date); | |
| } else if (typeof formatter == "string") { | |
| return date.strftime(formatter); | |
| } | |
| return f; | |
| }); | |
| } | |
| // Internal helper | |
| function zeroPad(num) { | |
| return (+num < 10 ? "0" : "") + num; | |
| } | |
| Date.formats = { | |
| // Formatting methods | |
| d: function (date) { | |
| return zeroPad(date.getDate()); | |
| }, | |
| m: function (date) { | |
| return zeroPad(date.getMonth() + 1); | |
| }, | |
| y: function (date) { | |
| return date.getYear() % 100; | |
| }, | |
| Y: function (date) { | |
| return date.getFullYear(); | |
| }, | |
| // Format shorthands | |
| F: "%Y-%m-%d", | |
| D: "%m/%d/%y" | |
| }; | |
| return strftime; | |
| }()); | |
| // アサート関数 | |
| function assert(message,expr){ | |
| if(!expr){ | |
| throw new Error(message); | |
| } | |
| assert.count ++; | |
| return true; | |
| } | |
| assert.count = 0; | |
| // 色分けして出力する用 | |
| function output(text, color) { | |
| var p = document.createElement("p"); | |
| p.innerHTML = text; | |
| p.style.color = color; | |
| document.body.appendChild(p); | |
| } | |
| // テストスイート | |
| function testCase(name, tests) { | |
| assert.count = 0; | |
| var successful = 0; | |
| var testCount = 0; | |
| var hasSetup = typeof tests.setUp == "function"; | |
| var hasTeardown = typeof tests.tearDown == "function"; | |
| for (var test in tests) { | |
| if (!/^test/.test(test)) { | |
| continue; | |
| } | |
| testCount++; | |
| try { | |
| if (hasSetup) { | |
| tests.setUp(); | |
| } | |
| tests[test](); | |
| output(test, "#0c0"); | |
| if (hasTeardown) { | |
| tests.tearDown(); | |
| } | |
| // If the tearDown method throws an error, it is | |
| // considered a test failure, so we don't count | |
| // success until all methods have run successfully | |
| successful++; | |
| } catch (e) { | |
| output(test + " failed: " + e.message, "#c00"); | |
| } | |
| } | |
| var color = successful == testCount ? "#0c0" : "#c00"; | |
| output("<strong>" + testCount + " tests, " + | |
| (testCount - successful) + " failures</strong>", | |
| color); | |
| } | |
| // テストケース | |
| testCase("strftime test", { | |
| setUp: function () { | |
| this.date = new Date(2009, 9, 2, 22, 14, 45); | |
| }, | |
| "test format specifier %Y": function () { | |
| assert("%Y should return full year", | |
| this.date.strftime("%Y") === "2009"); | |
| }, | |
| "test format specifier %m": function () { | |
| assert("%m should return month", | |
| this.date.strftime("%m") === "10"); | |
| //assert_equal("10",this.date.strftime("%m")); | |
| //assert_match(/\d{3,10}/,this.date.strftime("%j")); | |
| }, | |
| "test format specifier %d": function () { | |
| assert("%d should return date", | |
| this.date.strftime("%d") === "02"); | |
| }, | |
| "test format specifier %y": function () { | |
| assert("%y should return year as two digits", | |
| this.date.strftime("%y") === "09"); | |
| }, | |
| "test format shorthand %F": function () { | |
| assert("%F should act as %Y-%m-%d", | |
| this.date.strftime("%F") === "2009-10-02"); | |
| } | |
| }); |
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