2d.imageData.get.invalid.html (1725B)
1 <!DOCTYPE html> 2 <!-- DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py. --> 3 <meta charset="UTF-8"> 4 <title>OffscreenCanvas test: 2d.imageData.get.invalid</title> 5 <script src="/resources/testharness.js"></script> 6 <script src="/resources/testharnessreport.js"></script> 7 <script src="/html/canvas/resources/canvas-tests.js"></script> 8 9 <h1>2d.imageData.get.invalid</h1> 10 <p class="desc">Verify getImageData() behavior in invalid cases.</p> 11 12 13 <script> 14 var t = async_test("Verify getImageData() behavior in invalid cases."); 15 var t_pass = t.done.bind(t); 16 var t_fail = t.step_func(function(reason) { 17 throw reason; 18 }); 19 t.step(function() { 20 21 var canvas = new OffscreenCanvas(100, 50); 22 var ctx = canvas.getContext('2d'); 23 24 imageData = ctx.getImageData(0,0,2,2); 25 var testValues = [NaN, true, false, "\"garbage\"", "-1", 26 "0", "1", "2", Infinity, -Infinity, 27 -5, -0.5, 0, 0.5, 5, 28 5.4, 255, 256, null, undefined]; 29 var testResults = [0, 1, 0, 0, 0, 30 0, 1, 2, 255, 0, 31 0, 0, 0, 0, 5, 32 5, 255, 255, 0, 0]; 33 for (var i = 0; i < testValues.length; i++) { 34 imageData.data[0] = testValues[i]; 35 _assert(imageData.data[0] == testResults[i], "imageData.data[\""+(0)+"\"] == testResults[\""+(i)+"\"]"); 36 } 37 imageData.data['foo']='garbage'; 38 _assert(imageData.data['foo'] == 'garbage', "imageData.data['foo'] == 'garbage'"); 39 imageData.data[-1]='garbage'; 40 _assert(imageData.data[-1] == undefined, "imageData.data[-1] == undefined"); 41 imageData.data[17]='garbage'; 42 _assert(imageData.data[17] == undefined, "imageData.data[\""+(17)+"\"] == undefined"); 43 t.done(); 44 45 }); 46 </script>