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Test Info:
/* Any copyright is dedicated to the Public Domain.
"use strict";
add_task(async function test_textSelectedDuringScreenshot() {
await BrowserTestUtils.withNewTab(
{
gBrowser,
url: SELECTION_TEST_PAGE,
},
async browser => {
let helper = new ScreenshotsHelper(browser);
let rect = await helper.getTestPageElementRect("selection");
await ContentTask.spawn(browser, [], async () => {
let selection = content.window.getSelection();
let elToSelect = content.document.getElementById("selection");
let range = content.document.createRange();
range.selectNode(elToSelect);
selection.addRange(range);
});
helper.triggerUIFromToolbar();
await helper.waitForOverlay();
await helper.clickTestPageElement("selection");
let clipboardChanged = helper.waitForRawClipboardChange(
Math.round(rect.width),
Math.round(rect.height),
{ allPixels: true }
);
await helper.clickCopyButton();
info("Waiting for clipboard change");
let result = await clipboardChanged;
let allPixels = result.allPixels;
info(`${typeof allPixels}, ${allPixels.length}`);
let sumOfPixels = Object.values(allPixels).reduce(
(accumulator, currentVal) => accumulator + currentVal,
0
);
Assert.less(
sumOfPixels,
allPixels.length * 255,
"Sum of pixels is less than all white pixels"
);
}
);
});