2d.text.measure.selection-rects-exceptions.tentative.html (1740B)
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.text.measure.selection-rects-exceptions.tentative</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.text.measure.selection-rects-exceptions.tentative</h1> 10 <p class="desc">Check that TextMetrics::getSelectionRects() throws when using invalid indexes.</p> 11 12 13 <script> 14 var t = async_test("Check that TextMetrics::getSelectionRects() throws when using invalid indexes."); 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 const kTexts = [ 25 'UNAVAILABLE', 26 '🏁🎶🏁', 27 '）（あ）（', 28 '-abcd_', 29 'اين المكتبة؟', 30 'bidiالرياضيات' 31 ] 32 33 for (const text of kTexts) { 34 const tm = ctx.measureText(text); 35 // Handled by the IDL binding. 36 assert_throws_js(TypeError, () => tm.getSelectionRects(-1, 0) ); 37 assert_throws_js(TypeError, () => tm.getSelectionRects(0, -1) ); 38 assert_throws_js(TypeError, () => tm.getSelectionRects(-1, -1) ); 39 // Thrown in TextMetrics. 40 assert_throws_dom("IndexSizeError", 41 () => tm.getSelectionRects(text.length + 1, 0) ); 42 assert_throws_dom("IndexSizeError", 43 () => tm.getSelectionRects(0, text.length + 1) ); 44 assert_throws_dom("IndexSizeError", 45 () => tm.getSelectionRects(text.length + 1, text.length + 1) ); 46 } 47 t.done(); 48 49 }); 50 </script>