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Test Info: Warnings
- This test has a WPT meta file that expects 1 subtest issues.
- This WPT test may be referenced by the following Test IDs:
- /html/canvas/offscreen/text/2d.text.measure.caret-position-edge-cases.tentative.worker.html - WPT Dashboard Interop Dashboard
// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
// OffscreenCanvas test in a worker:2d.text.measure.caret-position-edge-cases.tentative
// Description:Test the edge cases for caretPositionFromPoint, where the point is at the edge of glyph and at the midpoint.
// Note:
importScripts("/resources/testharness.js");
importScripts("/html/canvas/resources/canvas-tests.js");
promise_test(async t => {
var canvas = new OffscreenCanvas(100, 50);
var ctx = canvas.getContext('2d');
var f = new FontFace("CanvasTest", "url('/fonts/CanvasTest.ttf')");
f.load();
self.fonts.add(f);
await self.fonts.ready;
ctx.font = '50px CanvasTest';
ctx.direction = 'ltr';
ctx.align = 'left'
ctx.baseline = 'alphabetic'
tm = ctx.measureText('A');
const a_width = tm.width;
tm = ctx.measureText('B');
const b_width = tm.width;
tm = ctx.measureText('C');
const c_width = tm.width;
const epsilon = 1.0e-4;
tm = ctx.measureText('ABC');
_assert(tm.caretPositionFromPoint(0) == 0, "tm.caretPositionFromPoint(0) == 0");
_assert(tm.caretPositionFromPoint(a_width / 2) == 0, "tm.caretPositionFromPoint(a_width / 2) == 0");
_assert(tm.caretPositionFromPoint(a_width / 2 + 1) == 1, "tm.caretPositionFromPoint(a_width / 2 + 1) == 1");
_assert(tm.caretPositionFromPoint(a_width) == 1, "tm.caretPositionFromPoint(a_width) == 1");
_assert(tm.caretPositionFromPoint(a_width + b_width / 2) == 1, "tm.caretPositionFromPoint(a_width + b_width / 2) == 1");
_assert(tm.caretPositionFromPoint(a_width + b_width / 2 + 1) == 2, "tm.caretPositionFromPoint(a_width + b_width / 2 + 1) == 2");
_assert(tm.caretPositionFromPoint(a_width + b_width) == 2, "tm.caretPositionFromPoint(a_width + b_width) == 2");
_assert(tm.caretPositionFromPoint(a_width + b_width + c_width / 2) == 2, "tm.caretPositionFromPoint(a_width + b_width + c_width / 2) == 2");
_assert(tm.caretPositionFromPoint(a_width + b_width + c_width / 2 + 1) == 3, "tm.caretPositionFromPoint(a_width + b_width + c_width / 2 + 1) == 3");
_assert(tm.caretPositionFromPoint(a_width + b_width + c_width) == 3, "tm.caretPositionFromPoint(a_width + b_width + c_width) == 3");
}, "Test the edge cases for caretPositionFromPoint, where the point is at the edge of glyph and at the midpoint.");
done();