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"Secrets of the JavaScript Ninja" home-made assert
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| <html> | |
| <head> | |
| <title>Test Suite</title> | |
| <script> | |
| (function() { | |
| var results; | |
| this.assert = function assert(value, desc) { | |
| var li = document.createElement("li"); | |
| li.className = value ? "pass" : "fail"; | |
| li.appendChild(document.createTextNode(desc)); | |
| results.appendChild(li); | |
| if(!value) { | |
| li.parentNode.parentNode.className = "fail"; // appear to need parentNode.parentNode for | |
| } | |
| return li; | |
| }; | |
| this.test = function test(name,fn) { | |
| results = document.getElementById("results"); | |
| results = assert(true, name).appendChild( | |
| document.createElement("ul")); | |
| fn(); | |
| }; | |
| })(); | |
| window.onload = function() { | |
| test("A test.", function() { | |
| assert(true, "first assumption completed"); | |
| assert(true, "second assumption completed"); | |
| assert(true, "third assumption completed"); | |
| }); | |
| test("Another test.", function() { | |
| assert(true, "First test completed"); | |
| assert("false", "second test failed"); | |
| assert(true, "third assertion completed"); | |
| }); | |
| test("A third test.", function() { | |
| assert(null, "fail"); | |
| assert(5, "pass"); | |
| }); | |
| }; | |
| </script> | |
| <style> | |
| #results li.pass { color: green; } | |
| #results li.fail { color: red; } | |
| </style> | |
| </head> | |
| <body> | |
| <ul id="results"></ul> | |
| </body> | |
| </html> |
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