2d.canvas.context.invalid.args.html (1479B)
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.canvas.context.invalid.args</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.canvas.context.invalid.args</h1> 10 <p class="desc">Calling getContext with invalid arguments.</p> 11 12 13 <script> 14 var t = async_test("Calling getContext with invalid arguments."); 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 assert_throws_js(TypeError, function() { canvas.getContext(''); }); 25 assert_throws_js(TypeError, function() { canvas.getContext('This is not an implemented context in any real browser'); }); 26 assert_throws_js(TypeError, function() { canvas.getContext('2d#'); }); 27 assert_throws_js(TypeError, function() { canvas.getContext('2d\0'); }); 28 assert_throws_js(TypeError, function() { canvas.getContext('2\uFF44'); }); 29 assert_throws_js(TypeError, function() { canvas.getContext('2D'); }); 30 assert_throws_js(TypeError, function() { canvas.getContext(); }); 31 assert_throws_js(TypeError, function() { canvas.getContext('null'); }); 32 assert_throws_js(TypeError, function() { canvas.getContext('undefined'); }); 33 t.done(); 34 35 }); 36 </script>