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08997000eb
Backed out changeset 647025383676 (bug1202902) Backed out changeset d70c7fe532c6 (bug1202902)
84 lines
3.0 KiB
JavaScript
84 lines
3.0 KiB
JavaScript
/* Any copyright is dedicated to the Public Domain.
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* http://creativecommons.org/publicdomain/zero/1.0/ */
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// Tests that scrollIntoViewIfNeeded works properly.
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var {scrollIntoViewIfNeeded} = require("devtools/shared/layout/utils");
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const TEST_URI = TEST_URI_ROOT + "browser_layoutHelpers.html";
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add_task(function*() {
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let [host, win, doc] = yield createHost("bottom", TEST_URI);
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runTest(win);
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host.destroy();
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});
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function runTest(win) {
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let some = win.document.getElementById('some');
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some.style.top = win.innerHeight + 'px';
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some.style.left = win.innerWidth + 'px';
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// The tests start with a black 2x2 pixels square below bottom right.
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// Do not resize the window during the tests.
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let xPos = Math.floor(win.innerWidth / 2);
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win.scroll(xPos, win.innerHeight + 2); // Above the viewport.
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scrollIntoViewIfNeeded(some);
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is(win.scrollY, Math.floor(win.innerHeight / 2) + 1,
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'Element completely hidden above should appear centered.');
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is(win.scrollX, xPos,
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'scrollX position has not changed.');
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win.scroll(win.innerWidth / 2, win.innerHeight + 1); // On the top edge.
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scrollIntoViewIfNeeded(some);
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is(win.scrollY, win.innerHeight,
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'Element partially visible above should appear above.');
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is(win.scrollX, xPos,
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'scrollX position has not changed.');
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win.scroll(win.innerWidth / 2, 0); // Just below the viewport.
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scrollIntoViewIfNeeded(some);
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is(win.scrollY, Math.floor(win.innerHeight / 2) + 1,
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'Element completely hidden below should appear centered.');
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is(win.scrollX, xPos,
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'scrollX position has not changed.');
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win.scroll(win.innerWidth / 2, 1); // On the bottom edge.
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scrollIntoViewIfNeeded(some);
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is(win.scrollY, 2,
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'Element partially visible below should appear below.');
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is(win.scrollX, xPos,
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'scrollX position has not changed.');
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win.scroll(win.innerWidth / 2, win.innerHeight + 2); // Above the viewport.
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scrollIntoViewIfNeeded(some, false);
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is(win.scrollY, win.innerHeight,
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'Element completely hidden above should appear above ' +
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'if parameter is false.');
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is(win.scrollX, xPos,
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'scrollX position has not changed.');
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win.scroll(win.innerWidth / 2, win.innerHeight + 1); // On the top edge.
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scrollIntoViewIfNeeded(some, false);
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is(win.scrollY, win.innerHeight,
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'Element partially visible above should appear above ' +
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'if parameter is false.');
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is(win.scrollX, xPos,
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'scrollX position has not changed.');
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win.scroll(win.innerWidth / 2, 0); // Below the viewport.
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scrollIntoViewIfNeeded(some, false);
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is(win.scrollY, 2,
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'Element completely hidden below should appear below ' +
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'if parameter is false.');
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is(win.scrollX, xPos,
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'scrollX position has not changed.');
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win.scroll(win.innerWidth / 2, 1); // On the bottom edge.
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scrollIntoViewIfNeeded(some, false);
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is(win.scrollY, 2,
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'Element partially visible below should appear below ' +
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'if parameter is false.');
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is(win.scrollX, xPos,
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'scrollX position has not changed.');
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}
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