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/* Any copyright is dedicated to the Public Domain.
http://creativecommons.org/publicdomain/zero/1.0/ */
"use strict";
const TEST_PAGE_URL =
"data:text/html;charset=utf-8,<body>test_zoom_levels</body>";
/**
* Waits for the zoom commands in the window to have the expected enabled
* state.
*
* @param {Object} expectedState
* An object where each key represents one of the zoom commands,
* and the value is a boolean that is true if the command should
* be enabled, and false if it should be disabled.
*
* The keys are "enlarge", "reduce" and "reset" for readability,
* and internally this function maps those keys to the appropriate
* commands.
* @returns Promise
* @resolves undefined
*/
async function waitForCommandEnabledState(expectedState) {
const COMMAND_MAP = {
enlarge: "cmd_fullZoomEnlarge",
reduce: "cmd_fullZoomReduce",
reset: "cmd_fullZoomReset",
};
await TestUtils.waitForCondition(() => {
for (let commandKey in expectedState) {
let commandID = COMMAND_MAP[commandKey];
let command = document.getElementById(commandID);
let expectedEnabled = expectedState[commandKey];
if (command.hasAttribute("disabled") == expectedEnabled) {
return false;
}
}
Assert.ok("Commands finally reached the expected state.");
return true;
}, "Waiting for commands to reach the right state.");
}
/**
* Tests that the "Zoom Text Only" command is in the right checked
* state.
*
* @param {boolean} isChecked
* True if the command should have its "checked" attribute set to
* "true". Otherwise, ensures that the attribute is set to "false".
*/
function assertTextZoomCommandCheckedState(isChecked) {
let command = document.getElementById("cmd_fullZoomToggle");
Assert.equal(
command.getAttribute("checked"),
"" + isChecked,
"Text zoom command has expected checked attribute"
);
}
/**
* Tests that zoom commands are properly updated when changing
* zoom levels and/or preferences on an individual browser.
*/
add_task(async function test_update_browser_zoom() {
await BrowserTestUtils.withNewTab(TEST_PAGE_URL, async browser => {
let currentZoom = await FullZoomHelper.getGlobalValue();
Assert.equal(
currentZoom,
1,
"We expect to start at the default zoom level."
);
await waitForCommandEnabledState({
enlarge: true,
reduce: true,
reset: false,
});
assertTextZoomCommandCheckedState(false);
// We'll run two variations of this test - one with text zoom enabled,
// and the other without.
for (let textZoom of [true, false]) {
info(`Running variation with textZoom set to ${textZoom}`);
await SpecialPowers.pushPrefEnv({
set: [["browser.zoom.full", !textZoom]],
});
// 120% global zoom
info("Changing default zoom by a single level");
ZoomManager.zoom = 1.2;
await waitForCommandEnabledState({
enlarge: true,
reduce: true,
reset: true,
});
await assertTextZoomCommandCheckedState(textZoom);
// Now max out the zoom level.
ZoomManager.zoom = ZoomManager.MAX;
await waitForCommandEnabledState({
enlarge: false,
reduce: true,
reset: true,
});
await assertTextZoomCommandCheckedState(textZoom);
// Now min out the zoom level.
ZoomManager.zoom = ZoomManager.MIN;
await waitForCommandEnabledState({
enlarge: true,
reduce: false,
reset: true,
});
await assertTextZoomCommandCheckedState(textZoom);
// Now reset back to the default zoom level
ZoomManager.zoom = 1;
await waitForCommandEnabledState({
enlarge: true,
reduce: true,
reset: false,
});
await assertTextZoomCommandCheckedState(textZoom);
}
});
});
/**
* Tests that zoom commands are properly updated when changing
* zoom levels when the default zoom is not at 1.0.
*/
add_task(async function test_update_browser_zoom() {
await BrowserTestUtils.withNewTab(TEST_PAGE_URL, async browser => {
let currentZoom = await FullZoomHelper.getGlobalValue();
Assert.equal(
currentZoom,
1,
"We expect to start at the default zoom level."
);
// Now change the default zoom to 200%, which is what we'll switch
// back to when choosing to reset the zoom level.
//
// It's a bit maddening that changeDefaultZoom takes values in integer
// units from 30 to 500, whereas ZoomManager.zoom takes things in float
// units from 0.3 to 5.0, but c'est la vie for now.
await FullZoomHelper.changeDefaultZoom(200);
registerCleanupFunction(async () => {
await FullZoomHelper.changeDefaultZoom(100);
});
await waitForCommandEnabledState({
enlarge: true,
reduce: true,
reset: false,
});
// 120% global zoom
info("Changing default zoom by a single level");
ZoomManager.zoom = 2.2;
await waitForCommandEnabledState({
enlarge: true,
reduce: true,
reset: true,
});
await assertTextZoomCommandCheckedState(false);
// Now max out the zoom level.
ZoomManager.zoom = ZoomManager.MAX;
await waitForCommandEnabledState({
enlarge: false,
reduce: true,
reset: true,
});
await assertTextZoomCommandCheckedState(false);
// Now min out the zoom level.
ZoomManager.zoom = ZoomManager.MIN;
await waitForCommandEnabledState({
enlarge: true,
reduce: false,
reset: true,
});
await assertTextZoomCommandCheckedState(false);
// Now reset back to the default zoom level
ZoomManager.zoom = 2;
await waitForCommandEnabledState({
enlarge: true,
reduce: true,
reset: false,
});
await assertTextZoomCommandCheckedState(false);
});
});
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