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	# ignore-this-changeset Differential Revision: https://phabricator.services.mozilla.com/D36042 --HG-- extra : source : d3afcafdce650a6f36cebbc126ee93b17f13cf52
		
			
				
	
	
		
			40 lines
		
	
	
	
		
			1 KiB
		
	
	
	
		
			JavaScript
		
	
	
	
	
	
			
		
		
	
	
			40 lines
		
	
	
	
		
			1 KiB
		
	
	
	
		
			JavaScript
		
	
	
	
	
	
"use strict";
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add_task(async function() {
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  let tab = (gBrowser.selectedTab = BrowserTestUtils.addTab(
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    gBrowser,
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    "about:mozilla"
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  ));
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  await promiseBrowserLoaded(gBrowser.selectedBrowser);
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  let win = gBrowser.replaceTabWithWindow(tab);
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  await promiseDelayedStartupFinished(win);
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  await promiseBrowserHasURL(win.gBrowser.browsers[0], "about:mozilla");
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  win.duplicateTabIn(win.gBrowser.selectedTab, "tab");
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  await promiseTabRestored(win.gBrowser.tabs[1]);
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  let browser = win.gBrowser.browsers[1];
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  is(browser.currentURI.spec, "about:mozilla", "tab was duplicated");
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  await BrowserTestUtils.closeWindow(win);
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});
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function promiseDelayedStartupFinished(win) {
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  return new Promise(resolve => {
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    whenDelayedStartupFinished(win, resolve);
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  });
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}
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function promiseBrowserHasURL(browser, url) {
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  let promise = Promise.resolve();
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  if (
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    browser.contentDocument.readyState === "complete" &&
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    browser.currentURI.spec === url
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  ) {
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    return promise;
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  }
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  return promise.then(() => promiseBrowserHasURL(browser, url));
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}
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