| <!doctype html> |
| <title>ResizeObserver tests</title> |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| <script src="./resources/resizeTestHelper.js"></script> |
| <div id="log"></div> |
| <script> |
| 'use strict'; |
| |
| // allow uncaught exception because ResizeObserver posts exceptions |
| // to window error handler when limit is exceeded. |
| setup({allow_uncaught_exception: true}); |
| |
| function test0() { |
| let t = createAndAppendElement("div"); |
| t.style.width = "100px"; |
| |
| let helper = new ResizeTestHelper( |
| "test0: simple observation", |
| [ |
| { |
| setup: observer => { |
| observer.observe(t); |
| t.style.width = "5px"; |
| }, |
| notify: entries => { |
| assert_equals(entries.length, 1, "1 pending notification"); |
| assert_equals(entries[0].target, t, "target is t"); |
| assert_equals(entries[0].contentRect.width, 5, "target width"); |
| } |
| } |
| ]); |
| return helper.start(() => t.remove()); |
| } |
| |
| function test1() { |
| let t = createAndAppendElement("div"); |
| t.style.width = "100px"; |
| |
| let helper = new ResizeTestHelper( |
| "test1: multiple observation on same element trigger only one", |
| [ |
| { |
| setup: observer => { |
| observer.observe(t); |
| observer.observe(t); |
| t.style.width = "10px"; |
| }, |
| notify: entries => { |
| assert_equals(entries.length, 1, "1 pending notification"); |
| } |
| } |
| ]); |
| return helper.start(() => t.remove()); |
| } |
| |
| function test2() { |
| test(() => { |
| assert_throws_js(TypeError, _=> { |
| let ro = new ResizeObserver(() => {}); |
| ro.observe({}); |
| }); |
| }, |
| "test2: throw exception when observing non-element" |
| ); |
| return Promise.resolve(); |
| } |
| |
| function test3() { |
| let t1 = createAndAppendElement("div"); |
| let t2 = createAndAppendElement("div"); |
| t1.style.width = "100px"; |
| t2.style.width = "100px"; |
| |
| let helper = new ResizeTestHelper( |
| "test3: disconnect stops all notifications", [ |
| { |
| setup: observer => { |
| observer.observe(t1); |
| observer.observe(t2); |
| observer.disconnect(); |
| t1.style.width = "30px"; |
| }, |
| notify: entries => { |
| assert_unreached("no entries should be observed"); |
| }, |
| timeout: () => { |
| // expected |
| } |
| } |
| ]); |
| return helper.start(() => { |
| t1.remove(); |
| t2.remove(); |
| }); |
| } |
| |
| function test4() { |
| let t1 = createAndAppendElement("div"); |
| let t2 = createAndAppendElement("div"); |
| t1.style.width = "100px"; |
| t2.style.width = "100px"; |
| |
| let helper = new ResizeTestHelper( |
| "test4: unobserve target stops notifications, unobserve non-observed does nothing", [ |
| { |
| setup: observer => { |
| observer.observe(t1); |
| observer.observe(t2); |
| observer.unobserve(t1); |
| observer.unobserve(document.body); |
| t1.style.width = "40px"; |
| t2.style.width = "40px"; |
| }, |
| notify: entries => { |
| assert_equals(entries.length, 1, "only t2"); |
| assert_equals(entries[0].target, t2, "t2 was observed"); |
| } |
| } |
| ]); |
| return helper.start(() => { |
| t1.remove(); |
| t2.remove(); |
| }); |
| } |
| |
| function test5() { |
| const img = new Image(); |
| img.style.width = "15px"; |
| img.style.height = "15px"; |
| img.src = "resources/image.png"; |
| |
| let helper = new ResizeTestHelper("test5: observe img",[ |
| { |
| setup: observer => { |
| observer.observe(img); |
| }, |
| notify: entries => { |
| } |
| }, |
| { |
| setup: observer => { |
| img.style.width = "15.5px"; |
| }, |
| notify: entries => { |
| assert_equals(entries.length, 1); |
| assert_equals(entries[0].contentRect.width, 15.5); |
| } |
| } |
| ]); |
| return img.decode().then(() => { |
| return new Promise(resolve => { |
| requestAnimationFrame(() => { |
| document.body.appendChild(img); |
| resolve(); |
| }); |
| }); |
| }).catch(error => { |
| assert_unreached("decode image failed"); |
| }).then(() => { |
| return helper.start(() => img.remove()); |
| }); |
| } |
| |
| function test6() { |
| let iframe = createAndAppendElement("iframe"); |
| iframe.src = "./resources/iframe.html"; |
| iframe.width = "300px"; |
| iframe.height = "100px"; |
| iframe.style.display = "block"; |
| |
| return new Promise(function(resolve, reject) { |
| iframe.onload = () => resolve(); |
| }).then(() => { |
| let resolvePromise; |
| let promise = new Promise((resolve) => { |
| resolvePromise = resolve; |
| }); |
| let test = async_test('test6: iframe notifications'); |
| let testRequested = false; |
| test.add_cleanup(() => iframe.remove()); |
| |
| window.addEventListener('message', event => { |
| switch(event.data) { |
| case 'readyToTest': |
| if (!testRequested) { |
| iframe.contentWindow.postMessage('startTest', '*'); |
| testRequested = true; |
| } |
| break; |
| case 'success': |
| case 'fail': |
| window.requestAnimationFrame(() => { |
| test.step( () => { |
| assert_equals(event.data, 'success'); |
| test.done(); |
| resolvePromise(); |
| }); |
| }); |
| break; |
| } |
| }, false); |
| return promise; |
| }); |
| } |
| |
| function test7() { |
| let harnessTest = async_test("test7: callback.this"); |
| let resolvePromise; |
| let ro = new ResizeObserver( function(entries, obs) { |
| let callbackThis = this; |
| resolvePromise(); |
| harnessTest.step(() => { |
| assert_equals(callbackThis, ro, "callback.this is ResizeObserver"); |
| assert_equals(obs, ro, "2nd argument is ResizeObserver"); |
| ro.disconnect(); |
| // every reference to RO must be null before test completes |
| // to avoid triggering test leak-detection |
| ro = null; |
| callbackThis = null; |
| obs = null; |
| harnessTest.done(); |
| }); |
| } |
| ); |
| |
| let t = createAndAppendElement("div"); |
| t.style.width = "100px"; |
| harnessTest.add_cleanup(() => t.remove()); |
| |
| ro.observe(t); |
| |
| return new Promise( (resolve, reject) => { |
| resolvePromise = resolve; |
| }); |
| } |
| |
| function test8() { |
| let t = createAndAppendElement("div"); |
| t.style.width = "100px"; |
| t.style.height = "100px"; |
| |
| let helper = new ResizeTestHelper( |
| "test8: simple content-box observation", |
| [ |
| { |
| setup: observer => { |
| observer.observe(t, { box: "content-box" }); |
| }, |
| notify: entries => { |
| assert_equals(entries.length, 1, "1 pending notification"); |
| assert_equals(entries[0].target, t, "target is t"); |
| assert_equals(entries[0].contentRect.width, 100, "target width"); |
| assert_equals(entries[0].contentRect.height, 100, "target height"); |
| assert_equals(entries[0].contentRect.top, 0, "target top padding"); |
| assert_equals(entries[0].contentRect.left, 0, "target left padding"); |
| assert_equals(entries[0].contentBoxSize.inlineSize, 100, |
| "target content-box inline size"); |
| assert_equals(entries[0].contentBoxSize.blockSize, 100, |
| "target content-box block size"); |
| assert_equals(entries[0].borderBoxSize.inlineSize, 100, |
| "target border-box inline size"); |
| assert_equals(entries[0].borderBoxSize.blockSize, 100, |
| "target border-box block size"); |
| } |
| }, |
| { |
| setup: observer => { |
| t.style.width = "90px"; |
| t.style.height = "90px"; |
| }, |
| notify: entries => { |
| assert_equals(entries.length, 1, "1 pending notification"); |
| assert_equals(entries[0].target, t, "target is t"); |
| assert_equals(entries[0].contentRect.width, 90, "target width"); |
| assert_equals(entries[0].contentRect.height, 90, "target height"); |
| assert_equals(entries[0].contentRect.top, 0, "target top padding"); |
| assert_equals(entries[0].contentRect.left, 0, "target left padding"); |
| assert_equals(entries[0].contentBoxSize.inlineSize, 90, |
| "target content-box inline size"); |
| assert_equals(entries[0].contentBoxSize.blockSize, 90, |
| "target content-box block size"); |
| assert_equals(entries[0].borderBoxSize.inlineSize, 90, |
| "target border-box inline size"); |
| assert_equals(entries[0].borderBoxSize.blockSize, 90, |
| "target border-box block size"); |
| } |
| }, |
| { |
| setup: observer => { |
| t.style.padding = "5px"; |
| }, |
| notify: entries => { |
| assert_unreached("the 'content-box' ResizeObserver shouldn't fire " + |
| "for restyles that don't affect the content-box size"); |
| }, |
| timeout: () => { |
| // expected |
| // Note: the border-box size is 100px x 100px right now. |
| } |
| } |
| ]); |
| return helper.start(() => t.remove()); |
| } |
| |
| function test9() { |
| let t = createAndAppendElement("div"); |
| t.style.width = "100px"; |
| t.style.height = "100px"; |
| |
| let helper = new ResizeTestHelper( |
| "test9: simple content-box observation but keep border-box size unchanged", |
| [ |
| { |
| setup: observer => { |
| observer.observe(t, { box: "content-box" }); |
| }, |
| notify: entries => { |
| assert_equals(entries.length, 1, "1 pending notification"); |
| assert_equals(entries[0].target, t, "target is t"); |
| assert_equals(entries[0].contentRect.width, 100, "target width"); |
| assert_equals(entries[0].contentRect.height, 100, "target height"); |
| assert_equals(entries[0].contentRect.top, 0, "target top padding"); |
| assert_equals(entries[0].contentRect.left, 0, "target left padding"); |
| assert_equals(entries[0].contentBoxSize.inlineSize, 100, |
| "target content-box inline size"); |
| assert_equals(entries[0].contentBoxSize.blockSize, 100, |
| "target content-box block size"); |
| assert_equals(entries[0].borderBoxSize.inlineSize, 100, |
| "target border-box inline size"); |
| assert_equals(entries[0].borderBoxSize.blockSize, 100, |
| "target border-box block size"); |
| } |
| }, |
| { |
| setup: observer => { |
| // Keep the border-box size the same, and change the content-box size. |
| t.style.width = "92px"; |
| t.style.height = "92px"; |
| t.style.padding = "4px"; |
| }, |
| notify: entries => { |
| assert_equals(entries.length, 1, "1 pending notification"); |
| assert_equals(entries[0].target, t, "target is t"); |
| assert_equals(entries[0].contentRect.width, 92, "target width"); |
| assert_equals(entries[0].contentRect.height, 92, "target height"); |
| assert_equals(entries[0].contentRect.top, 4, "target top padding"); |
| assert_equals(entries[0].contentRect.left, 4, "target left padding"); |
| assert_equals(entries[0].contentBoxSize.inlineSize, 92, |
| "target content-box inline size"); |
| assert_equals(entries[0].contentBoxSize.blockSize, 92, |
| "target content-box block size"); |
| assert_equals(entries[0].borderBoxSize.inlineSize, 100, |
| "target border-box inline size"); |
| assert_equals(entries[0].borderBoxSize.blockSize, 100, |
| "target border-box block size"); |
| } |
| } |
| ]); |
| return helper.start(() => t.remove()); |
| } |
| |
| function test10() { |
| let t = createAndAppendElement("div"); |
| t.style.width = "100px"; |
| t.style.height = "100px"; |
| |
| let helper = new ResizeTestHelper( |
| "test10: simple border-box observation", |
| [ |
| { |
| setup: observer => { |
| observer.observe(t, { box: "border-box" }); |
| }, |
| notify: entries => { |
| assert_equals(entries.length, 1, "1 pending notification"); |
| assert_equals(entries[0].target, t, "target is t"); |
| assert_equals(entries[0].contentRect.width, 100, "target width"); |
| assert_equals(entries[0].contentRect.height, 100, "target height"); |
| assert_equals(entries[0].contentRect.top, 0, "target top padding"); |
| assert_equals(entries[0].contentRect.left, 0, "target left padding"); |
| assert_equals(entries[0].contentBoxSize.inlineSize, 100, |
| "target content-box inline size"); |
| assert_equals(entries[0].contentBoxSize.blockSize, 100, |
| "target content-box block size"); |
| assert_equals(entries[0].borderBoxSize.inlineSize, 100, |
| "target border-box inline size"); |
| assert_equals(entries[0].borderBoxSize.blockSize, 100, |
| "target border-box block size"); |
| } |
| }, |
| { |
| setup: observer => { |
| t.style.padding = "4px"; |
| }, |
| notify: entries => { |
| assert_equals(entries.length, 1, "1 pending notification"); |
| assert_equals(entries[0].target, t, "target is t"); |
| assert_equals(entries[0].contentRect.width, 100, "target width"); |
| assert_equals(entries[0].contentRect.height, 100, "target height"); |
| assert_equals(entries[0].contentRect.top, 4, "target top padding"); |
| assert_equals(entries[0].contentRect.left, 4, "target left padding"); |
| assert_equals(entries[0].contentBoxSize.inlineSize, 100, |
| "target content-box inline size"); |
| assert_equals(entries[0].contentBoxSize.blockSize, 100, |
| "target content-box block size"); |
| assert_equals(entries[0].borderBoxSize.inlineSize, 108, |
| "target border-box inline size"); |
| assert_equals(entries[0].borderBoxSize.blockSize, 108, |
| "target border-box block size"); |
| } |
| }, |
| { |
| setup: observer => { |
| t.style.width = "104px"; |
| t.style.height = "104px"; |
| t.style.padding = "2px"; |
| }, |
| notify: entries => { |
| assert_unreached("the 'border-box' ResizeObserver shouldn't fire " + |
| "for restyles that don't affect the border-box size"); |
| }, |
| timeout: () => { |
| // expected: 104 + 2 * 2 = 108. The border-box size is the same. |
| } |
| } |
| ]); |
| return helper.start(() => t.remove()); |
| } |
| |
| function test11() { |
| let wrapper = createAndAppendElement("div"); |
| wrapper.style.width = "100px"; |
| wrapper.style.height = "100px"; |
| wrapper.style.writingMode = "vertical-rl"; |
| let t = createAndAppendElement("div", wrapper); |
| t.style.inlineSize = "50px"; |
| t.style.blockSize = "50px"; |
| |
| let helper = new ResizeTestHelper( |
| "test11: simple observation with vertical writing mode", |
| [ |
| { |
| setup: observer => { |
| observer.observe(t); |
| }, |
| notify: entries => { |
| assert_equals(entries.length, 1, "1 pending notification"); |
| assert_equals(entries[0].target, t, "target is t"); |
| assert_equals(entries[0].contentRect.width, 50, "target width"); |
| assert_equals(entries[0].contentRect.height, 50, "target height"); |
| assert_equals(entries[0].contentBoxSize.inlineSize, 50, |
| "target content-box inline size"); |
| assert_equals(entries[0].contentBoxSize.blockSize, 50, |
| "target content-box block size"); |
| assert_equals(entries[0].borderBoxSize.inlineSize, 50, |
| "target border-box inline size"); |
| assert_equals(entries[0].borderBoxSize.blockSize, 50, |
| "target border-box block size"); |
| } |
| }, |
| { |
| setup: observer => { |
| t.style.blockSize = "75px"; |
| }, |
| notify: entries => { |
| assert_equals(entries.length, 1, "1 pending notification"); |
| assert_equals(entries[0].target, t, "target is t"); |
| assert_equals(entries[0].contentRect.width, 75, "target width"); |
| assert_equals(entries[0].contentRect.height, 50, "target height"); |
| assert_equals(entries[0].contentBoxSize.inlineSize, 50, |
| "target content-box inline size"); |
| assert_equals(entries[0].contentBoxSize.blockSize, 75, |
| "target content-box block size"); |
| assert_equals(entries[0].borderBoxSize.inlineSize, 50, |
| "target border-box inline size"); |
| assert_equals(entries[0].borderBoxSize.blockSize, 75, |
| "target border-box block size"); |
| } |
| } |
| ]); |
| |
| return helper.start(() => { |
| t.remove(); |
| wrapper.remove(); |
| }); |
| } |
| |
| function test12() { |
| let t = createAndAppendElement("div"); |
| t.style.writingMode = "vertical-lr"; |
| t.style.inlineSize = "100px"; |
| t.style.blockSize = "50px"; |
| |
| let helper = new ResizeTestHelper( |
| "test12: no observation is fired after the change of writing mode when " + |
| "box's specified size comes from logical size properties.", |
| [ |
| { |
| setup: observer => { |
| observer.observe(t); |
| }, |
| notify: entries => { |
| assert_equals(entries.length, 1, "1 pending notification"); |
| assert_equals(entries[0].target, t, "target is t"); |
| assert_equals(entries[0].contentRect.width, 50, "target width"); |
| assert_equals(entries[0].contentRect.height, 100, "target height"); |
| assert_equals(entries[0].contentBoxSize.inlineSize, 100, |
| "target content-box inline size"); |
| assert_equals(entries[0].contentBoxSize.blockSize, 50, |
| "target content-box block size"); |
| } |
| }, |
| { |
| setup: observer => { |
| t.style.writingMode = "horizontal-tb"; |
| }, |
| notify: entries => { |
| assert_unreached("the logical size of content-box doesn't change"); |
| }, |
| timeout: () => { |
| // expected: We don't change the logical size of content-box. |
| } |
| } |
| ]); |
| |
| return helper.start(() => t.remove()); |
| } |
| |
| function test13() { |
| let t = createAndAppendElement("div"); |
| t.style.writingMode = "vertical-lr"; |
| t.style.height = "100px"; |
| t.style.width = "50px"; |
| |
| let helper = new ResizeTestHelper( |
| "test13: an observation is fired after the change of writing mode when " + |
| "box's specified size comes from physical size properties.", |
| [ |
| { |
| setup: observer => { |
| observer.observe(t); |
| }, |
| notify: entries => { |
| assert_equals(entries.length, 1, "1 pending notification"); |
| assert_equals(entries[0].target, t, "target is t"); |
| assert_equals(entries[0].contentRect.width, 50, "target width"); |
| assert_equals(entries[0].contentRect.height, 100, "target height"); |
| assert_equals(entries[0].contentBoxSize.inlineSize, 100, |
| "target content-box inline size"); |
| assert_equals(entries[0].contentBoxSize.blockSize, 50, |
| "target content-box block size"); |
| } |
| }, |
| { |
| setup: observer => { |
| t.style.writingMode = "horizontal-tb"; |
| }, |
| notify: entries => { |
| assert_equals(entries.length, 1, "1 pending notification"); |
| assert_equals(entries[0].target, t, "target is t"); |
| assert_equals(entries[0].contentRect.width, 50, "target width"); |
| assert_equals(entries[0].contentRect.height, 100, "target height"); |
| assert_equals(entries[0].contentBoxSize.inlineSize, 50, |
| "target content-box inline size"); |
| assert_equals(entries[0].contentBoxSize.blockSize, 100, |
| "target content-box block size"); |
| }, |
| } |
| ]); |
| |
| return helper.start(() => t.remove()); |
| } |
| |
| function test14() { |
| let t = createAndAppendElement("div"); |
| t.style.width = "100px"; |
| t.style.height = "100px"; |
| |
| let helper = new ResizeTestHelper( |
| "test14: observe the same target but using a different box should " + |
| "override the previous one", |
| [ |
| { |
| setup: observer => { |
| observer.observe(t, { box: "content-box" }); |
| observer.observe(t, { box: "border-box" }); |
| }, |
| notify: entries => { |
| assert_equals(entries.length, 1, "1 pending notification"); |
| assert_equals(entries[0].target, t, "target is t"); |
| assert_equals(entries[0].contentRect.width, 100, "target width"); |
| assert_equals(entries[0].contentRect.height, 100, "target height"); |
| assert_equals(entries[0].contentRect.top, 0, "target top padding"); |
| assert_equals(entries[0].contentRect.left, 0, "target left padding"); |
| assert_equals(entries[0].contentBoxSize.inlineSize, 100, |
| "target content-box inline size"); |
| assert_equals(entries[0].contentBoxSize.blockSize, 100, |
| "target content-box block size"); |
| assert_equals(entries[0].borderBoxSize.inlineSize, 100, |
| "target border-box inline size"); |
| assert_equals(entries[0].borderBoxSize.blockSize, 100, |
| "target border-box block size"); |
| } |
| }, |
| { |
| setup: observer => { |
| // Change border-box size. |
| t.style.padding = "4px"; |
| }, |
| notify: entries => { |
| assert_equals(entries.length, 1, "1 pending notification"); |
| assert_equals(entries[0].target, t, "target is t"); |
| assert_equals(entries[0].contentRect.width, 100, "target width"); |
| assert_equals(entries[0].contentRect.height, 100, "target height"); |
| assert_equals(entries[0].contentRect.top, 4, "target top padding"); |
| assert_equals(entries[0].contentRect.left, 4, "target left padding"); |
| assert_equals(entries[0].contentBoxSize.inlineSize, 100, |
| "target content-box inline size"); |
| assert_equals(entries[0].contentBoxSize.blockSize, 100, |
| "target content-box block size"); |
| assert_equals(entries[0].borderBoxSize.inlineSize, 108, |
| "target border-box inline size"); |
| assert_equals(entries[0].borderBoxSize.blockSize, 108, |
| "target border-box block size"); |
| } |
| }, |
| { |
| setup: observer => { |
| // Change only content-box size. |
| t.style.width = "104px"; |
| t.style.height = "104px"; |
| t.style.padding = "2px"; |
| }, |
| notify: entries => { |
| assert_unreached("the 'border-box' ResizeObserver shouldn't fire " + |
| "for restyles that don't affect the border-box size"); |
| }, |
| timeout: () => { |
| // expected: 104 + 2 * 2 = 108. The border-box size is the same. |
| } |
| } |
| ]); |
| return helper.start(() => t.remove()); |
| } |
| |
| function test15() { |
| let t = createAndAppendElement("div"); |
| t.style.height = "100px"; |
| t.style.width = "50px"; |
| |
| let helper = new ResizeTestHelper( |
| "test15: an observation is fired with box dimensions 0 when element's " + |
| "display property is set to inline", |
| [ |
| { |
| setup: observer => { |
| observer.observe(t); |
| }, |
| notify: entries => { |
| assert_equals(entries.length, 1, "1 pending notification"); |
| assert_equals(entries[0].target, t, "target is t"); |
| assert_equals(entries[0].contentRect.width, 50, "target width"); |
| assert_equals(entries[0].contentRect.height, 100, "target height"); |
| assert_equals(entries[0].contentBoxSize.inlineSize, 50, |
| "target content-box inline size"); |
| assert_equals(entries[0].contentBoxSize.blockSize, 100, |
| "target content-box block size"); |
| assert_equals(entries[0].borderBoxSize.inlineSize, 50, |
| "target content-box inline size"); |
| assert_equals(entries[0].borderBoxSize.blockSize, 100, |
| "target content-box block size"); |
| } |
| }, |
| { |
| setup: observer => { |
| t.style.display = "inline"; |
| }, |
| notify: entries => { |
| assert_equals(entries[0].contentRect.width, 0, "target width"); |
| assert_equals(entries[0].contentRect.height, 0, "target height"); |
| assert_equals(entries[0].contentBoxSize.inlineSize, 0, |
| "target content-box inline size"); |
| assert_equals(entries[0].contentBoxSize.blockSize, 0, |
| "target content-box block size"); |
| assert_equals(entries[0].borderBoxSize.inlineSize, 0, |
| "target border-box inline size"); |
| assert_equals(entries[0].borderBoxSize.blockSize, 0, |
| "target border-box block size"); |
| } |
| } |
| ]); |
| |
| return helper.start(() => t.remove()); |
| } |
| |
| function test16() { |
| let t = createAndAppendElement("span"); |
| |
| let helper = new ResizeTestHelper( |
| // See: https://drafts.csswg.org/resize-observer/#intro. |
| "test16: observations do not fire for non-replaced inline elements", |
| [ |
| { |
| setup: observer => { |
| observer.observe(t); |
| }, |
| notify: entries => { |
| assert_unreached("No observation should fire for non box element") |
| }, |
| timeout: () => {} |
| } |
| ]); |
| |
| return helper.start(() => t.remove()); |
| |
| } |
| |
| function test17() { |
| // <div id="outer"> |
| // <div id="nested"> |
| // </div> |
| // </div> |
| |
| let outer = document.createElement('div'); |
| outer.style.width = "100px"; |
| outer.style.height = "100px"; |
| outer.style.padding = "10px"; |
| outer.style.border = "1px solid blue" |
| let nested = document.createElement('div'); |
| nested.style.width = "60px"; |
| nested.style.height = "50px"; |
| nested.style.padding = "5%"; |
| nested.style.boxSizing = "border-box"; |
| nested.style.border = "5px solid black"; |
| outer.appendChild(nested); |
| document.body.appendChild(outer); |
| |
| let helper = new ResizeTestHelper( |
| "test17: Box sizing snd Resize Observer notifications", |
| [ |
| { |
| setup: observer => { |
| observer.observe(nested, { box: "content-box" }); |
| }, |
| notify: entries => { |
| assert_equals(entries.length, 1, "1 pending notification"); |
| assert_equals(entries[0].target, nested, "target is nested"); |
| assert_equals(entries[0].contentRect.width, 40, "target width"); |
| assert_equals(entries[0].contentRect.height, 30, "target height"); |
| assert_equals(entries[0].contentRect.top, 5, "target top padding"); |
| assert_equals(entries[0].contentRect.left, 5, "target left padding"); |
| assert_equals(entries[0].contentBoxSize.inlineSize, 40, |
| "target content-box inline size"); |
| assert_equals(entries[0].contentBoxSize.blockSize, 30, |
| "target content-box block size"); |
| assert_equals(entries[0].borderBoxSize.inlineSize, 60, |
| "target border-box inline size"); |
| assert_equals(entries[0].borderBoxSize.blockSize, 50, |
| "target border-box block size"); |
| } |
| }, |
| { |
| // Changes to a parent's dimensions with a child's padding set as a percentage |
| // should fire observation if content-box is being observed |
| setup: observer => { |
| outer.style.height = "200px"; |
| outer.style.width = "200px"; |
| }, |
| notify: entries => { |
| assert_equals(entries.length, 1, "1 pending notification"); |
| assert_equals(entries[0].target, nested, "target is nested"); |
| assert_equals(entries[0].contentRect.width, 30, "target width"); |
| assert_equals(entries[0].contentRect.height, 20, "target height"); |
| assert_equals(entries[0].contentRect.top, 10, "target top padding"); |
| assert_equals(entries[0].contentRect.left, 10, "target left padding"); |
| assert_equals(entries[0].contentBoxSize.inlineSize, 30, |
| "target content-box inline size"); |
| assert_equals(entries[0].contentBoxSize.blockSize, 20, |
| "target content-box block size"); |
| assert_equals(entries[0].borderBoxSize.inlineSize, 60, |
| "target border-box inline size"); |
| assert_equals(entries[0].borderBoxSize.blockSize, 50, |
| "target border-box block size"); |
| } |
| }, |
| { |
| // Changes to a parent's dimensions with a child's padding set as a percentage |
| // should fire observation if content-box is being observed |
| setup: observer => { |
| nested.style.border = "1px solid black"; |
| }, |
| notify: entries => { |
| assert_equals(entries.length, 1, "1 pending notification"); |
| assert_equals(entries[0].target, nested, "target is nested"); |
| assert_equals(entries[0].contentRect.width, 38, "target width"); |
| assert_equals(entries[0].contentRect.height, 28, "target height"); |
| assert_equals(entries[0].contentRect.top, 10, "target top padding"); |
| assert_equals(entries[0].contentRect.left, 10, "target left padding"); |
| assert_equals(entries[0].contentBoxSize.inlineSize, 38, |
| "target content-box inline size"); |
| assert_equals(entries[0].contentBoxSize.blockSize, 28, |
| "target content-box block size"); |
| assert_equals(entries[0].borderBoxSize.inlineSize, 60, |
| "target border-box inline size"); |
| assert_equals(entries[0].borderBoxSize.blockSize, 50, |
| "target border-box block size"); |
| } |
| }, |
| { |
| setup: observer => { |
| observer.observe(nested, { box: "border-box" }); |
| }, |
| notify: entries => { |
| assert_equals(entries.length, 1, "1 pending notification"); |
| assert_equals(entries[0].target, nested, "target is nested"); |
| assert_equals(entries[0].contentRect.width, 38, "target width"); |
| assert_equals(entries[0].contentRect.height, 28, "target height"); |
| assert_equals(entries[0].contentRect.top, 10, "target top padding"); |
| assert_equals(entries[0].contentRect.left, 10, "target left padding"); |
| assert_equals(entries[0].contentBoxSize.inlineSize, 38, |
| "target content-box inline size"); |
| assert_equals(entries[0].contentBoxSize.blockSize, 28, |
| "target content-box block size"); |
| assert_equals(entries[0].borderBoxSize.inlineSize, 60, |
| "target border-box inline size"); |
| assert_equals(entries[0].borderBoxSize.blockSize, 50, |
| "target border-box block size"); |
| } |
| }, |
| { |
| // Changes to a parent's dimensions with a child's padding set as a percentage |
| // should not fire observation if border-box is being observed |
| setup: observer => { |
| outer.style.height = "100px"; |
| }, |
| notify: entries => { |
| assert_unreached("No observation should be fired when nested border box remains constant"); |
| }, |
| timeout: () => { |
| // expected |
| } |
| }, |
| |
| ]); |
| return helper.start(() => nested.remove()); |
| } |
| |
| function test18() { |
| let t = createAndAppendElement("div"); |
| t.style.height = "100px"; |
| t.style.width = "50px"; |
| |
| let helper = new ResizeTestHelper( |
| "test18: an observation is fired when device-pixel-content-box is being " + |
| "observed", |
| [ |
| { |
| setup: observer => { |
| observer.observe(t, {box: "device-pixel-content-box"}); |
| }, |
| notify: entries => { |
| assert_equals(entries.length, 1, "1 pending notification"); |
| assert_equals(entries[0].target, t, "target is t"); |
| assert_equals(entries[0].contentRect.width, 50, "target width"); |
| assert_equals(entries[0].contentRect.height, 100, "target height"); |
| assert_equals(entries[0].contentBoxSize.inlineSize, 50, |
| "target content-box inline size"); |
| assert_equals(entries[0].contentBoxSize.blockSize, 100, |
| "target content-box block size"); |
| assert_equals(entries[0].borderBoxSize.inlineSize, 50, |
| "target border-box inline size"); |
| assert_equals(entries[0].borderBoxSize.blockSize, 100, |
| "target border-box block size"); |
| assert_equals(entries[0].devicePixelContentBoxSize.inlineSize, 50, |
| "target device-pixel-content-box inline size"); |
| assert_equals(entries[0].devicePixelContentBoxSize.blockSize, 100, |
| "target device-pixel-content-box block size"); |
| } |
| }, |
| { |
| setup: observer => { |
| document.body.style.zoom = 3; |
| }, |
| notify: entries => { |
| assert_equals(entries.length, 1, "1 pending notification"); |
| assert_equals(entries[0].target, t, "target is t"); |
| assert_equals(entries[0].contentRect.width, 50, "target width"); |
| assert_equals(entries[0].contentRect.height, 100, "target height"); |
| assert_equals(entries[0].contentBoxSize.inlineSize, 50, |
| "target content-box inline size"); |
| assert_equals(entries[0].contentBoxSize.blockSize, 100, |
| "target content-box block size"); |
| assert_equals(entries[0].borderBoxSize.inlineSize, 50, |
| "target border-box inline size"); |
| assert_equals(entries[0].borderBoxSize.blockSize, 100, |
| "target border-box block size"); |
| assert_equals(entries[0].devicePixelContentBoxSize.inlineSize, 150, |
| "target device-pixel-content-box inline size"); |
| assert_equals(entries[0].devicePixelContentBoxSize.blockSize, 300, |
| "target device-pixel-content-box block size"); |
| } |
| } |
| ]); |
| |
| return helper.start(() => t.remove()); |
| } |
| |
| let guard; |
| test(_ => { |
| assert_own_property(window, "ResizeObserver"); |
| guard = async_test('guard'); |
| }, "ResizeObserver implemented") |
| |
| test0() |
| .then(() => test1()) |
| .then(() => test2()) |
| .then(() => test3()) |
| .then(() => test4()) |
| .then(() => test5()) |
| .then(() => test6()) |
| .then(() => test7()) |
| .then(() => test8()) |
| .then(() => test9()) |
| .then(() => test10()) |
| .then(() => test11()) |
| .then(() => test12()) |
| .then(() => test13()) |
| .then(() => test14()) |
| .then(() => test15()) |
| .then(() => test16()) |
| .then(() => test17()) |
| .then(() => test18()) |
| .then(() => guard.done()); |
| |
| </script> |