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Bug 984711 part 7: Add back mochitest for min-[size]:auto. (no review; just an unbitrotted backout)
This reverts changeset edd98255e81d from bug 848539.
This commit is contained in:
Daniel Holbert
parent
875d23afcb
commit
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146
layout/style/test/file_flexbox_min_size_auto.html
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146
layout/style/test/file_flexbox_min_size_auto.html
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<!DOCTYPE HTML>
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<html>
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<head>
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<meta charset="utf-8">
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</head>
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<body>
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<div id="display">
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<div id="non-flex-item">abc</div>
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<div style="display: flex">
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<div id="horizontal-flex-item">abc</div>
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</div>
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<div style="display: flex; flex-direction: column">
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<div id="vertical-flex-item">abc</div>
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</div>
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</div>
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<pre id="test">
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<script type="application/javascript">
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"use strict";
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/**
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* Test 'min-height:auto' and 'min-width:auto' (Bug 763689)
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* ========================================================
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* This test checks the computed-style value of the "auto" keyword introduced
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* for the "min-height" and "min-width" properties in CSS3 Flexbox Section 4.5.
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* http://www.w3.org/TR/css3-flexbox/#min-size-auto
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*
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* Quoting that chunk of spec:
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* # auto
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* # When used as the value of a flex item's min main size property,
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* # this keyword indicates a minimum of the min-content size, to
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* # help ensure that the item is large enough to fit its contents.
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* #
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* # | It is intended that this will compute to the 'min-content'
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* # | keyword when the specification defining it (Writing Modes
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* # | Appendix D) is sufficiently mature.
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* #
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* # Otherwise, this keyword computes to '0' (unless otherwise
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* # defined by a future specification).
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*
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* So, since we already support the "min-content" keyword, this effectively
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* means:
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* - On a horizontal flex item, "min-width: auto" computes to "min-content".
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* - On a vertical flex item, "min-height: auto" computes to "min-content".
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* - In all other cases, "min-[width|height]: auto" computes to 0.
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* That's what this mochitest aims to check, via getComputedStyle().
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*
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* NOTE: As of this test's writing, we don't yet support enumerated keyword
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* values (including "min-content") for the "min-height" property. So for
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* now, "min-height: auto" always produces "0" in getComputedStyle, even on
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* a vertical flex item. (Though internally, we do know that it's really
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* "auto", and our flex container will correctly use the flex item's
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* min-content height as needed in layout.)
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*/
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// Use "is()", "ok()", and "todo_is()" from parent document.
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var is = parent.is;
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var ok = parent.ok;
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var todo_is = parent.todo_is;
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// Given an element ID, this function sets the corresponding
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// element's inline-style min-width and min-height explicitly to "auto".
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function setElemMinSizesToAuto(aElemId) {
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var elem = document.getElementById(aElemId);
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is(elem.style.minWidth, "", "min-width should be initially unset");
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elem.style.minWidth = "auto";
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is(elem.style.minWidth, "auto", "min-width should accept 'auto' value");
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is(elem.style.minHeight, "", "min-height should be initially unset");
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elem.style.minHeight = "auto";
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is(elem.style.minHeight, "auto", "min-height should accept 'auto' value");
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}
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// Given an element ID, this function compares the corresponding element's
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// computed min-width and min-height against expected values.
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// (There's an optional final argument, to specify a "todo" expected value for
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// the min-height, for cases when we *should* have a particular value, but we
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// don't support it yet. In that case, aExpectedMinHeight is the value we
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// currently expect to have, and aExpectedMinHeightTodo is the value we really
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// *should* have.)
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function checkElemMinSizes(aElemId,
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aExpectedMinWidth,
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aExpectedMinHeight,
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aExpectedMinHeightTodo /* optional */)
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{
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var elem = document.getElementById(aElemId);
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is(window.getComputedStyle(elem, "").minWidth, aExpectedMinWidth,
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"checking min-width of " + aElemId);
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is(window.getComputedStyle(elem, "").minHeight, aExpectedMinHeight,
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"checking min-height of " + aElemId);
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// Special bonus check, if the *real* expected value is something we don't
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// support yet.
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if (typeof aExpectedMinHeightTodo != 'undefined') {
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todo_is(window.getComputedStyle(elem, "").minHeight, aExpectedMinHeightTodo,
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"checking the ultimately-correct min-height of " + aElemId);
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}
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}
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// This function goes through all the elements we're interested in
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// and checks their computed min-sizes against expected values,
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// farming out each per-element job to checkElemMinSizes.
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function checkAllTheMinSizes() {
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// This is the normal part -- generally, the default value of "min-width"
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// and "min-height" (auto) computes to "0px".
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checkElemMinSizes("non-flex-item", "0px", "0px");
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// ...but for a flex item in a horizontal flex container, "min-width: auto"
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// computes to "min-content".
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checkElemMinSizes("horizontal-flex-item", "-moz-min-content", "0px");
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// ...and for a flex item in a vertical flex container, "min-height: auto"
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// computes to "min-content" (except for now, it computes to "0px", because
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// we don't support "min-content" on heights yet. We pass "-moz-min-content"
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// as the final arg, to get it checked as the "todo" min-height.)
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checkElemMinSizes("vertical-flex-item", "0px", "0px", "-moz-min-content");
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}
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// Main test function
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function main() {
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ok(SpecialPowers.getBoolPref("layout.css.flexbox.enabled"),
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"expecting to be run with flexbox support enabled");
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// First: check that min-sizes are what we expect, with min-size properties
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// at their initial value.
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checkAllTheMinSizes();
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// Now, we *explicitly* set min-size properties to "auto"...
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var elemIds = [ "non-flex-item",
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"horizontal-flex-item",
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"vertical-flex-item"];
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elemIds.forEach(setElemMinSizesToAuto);
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// ...and try again (should have the same result):
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checkAllTheMinSizes();
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parent.finish();
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}
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main();
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</script>
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</pre>
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</body>
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</html>
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@ -128,6 +128,8 @@ skip-if = toolkit == 'android' #bug 536603
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[test_flexbox_flex_shorthand.html]
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[test_flexbox_layout.html]
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support-files = flexbox_layout_testcases.js
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[test_flexbox_min_size_auto.html]
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support-files = file_flexbox_min_size_auto.html
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[test_flexbox_order.html]
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[test_flexbox_order_table.html]
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[test_font_face_parser.html]
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43
layout/style/test/test_flexbox_min_size_auto.html
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43
layout/style/test/test_flexbox_min_size_auto.html
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<!DOCTYPE HTML>
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<html>
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<!--
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https://bugzilla.mozilla.org/show_bug.cgi?id=763689
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-->
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<head>
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<meta charset="utf-8">
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<title>Test behavior of 'min-height:auto' and 'min-width:auto' (Bug 763689)</title>
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<script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
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<link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
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</head>
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<body>
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<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=763689">Mozilla Bug 763689</a>
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<div id="display">
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<iframe id="iframe"></iframe>
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</div>
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<pre id="test">
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<script type="application/javascript">
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"use strict";
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/** Test 'min-height:auto' and 'min-width:auto' (Bug 763689) **/
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/*
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* This mochitest runs in an iframe so that we can selectively turn on the
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* flexbox about:config pref before its document is instantiated.
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*
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* See the iframe's source ("file_flexbox_min_size_auto.html") for the actual
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* test code and for more documentation.
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*/
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SimpleTest.waitForExplicitFinish();
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SpecialPowers.setBoolPref("layout.css.flexbox.enabled", true);
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document.getElementById("iframe").src = "file_flexbox_min_size_auto.html";
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function finish() {
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SpecialPowers.clearUserPref("layout.css.flexbox.enabled");
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SimpleTest.finish();
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}
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</script>
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</pre>
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</body>
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</html>
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