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-rw-r--r--browser/base/content/test/favicons/browser_missing_favicon.js33
1 files changed, 33 insertions, 0 deletions
diff --git a/browser/base/content/test/favicons/browser_missing_favicon.js b/browser/base/content/test/favicons/browser_missing_favicon.js
new file mode 100644
index 0000000000..739601c1d7
--- /dev/null
+++ b/browser/base/content/test/favicons/browser_missing_favicon.js
@@ -0,0 +1,33 @@
+add_task(async () => {
+ let testPath = getRootDirectory(gTestPath);
+
+ // The default favicon would interfere with this test.
+ Services.prefs.setBoolPref("browser.chrome.guess_favicon", false);
+ registerCleanupFunction(() => {
+ Services.prefs.setBoolPref("browser.chrome.guess_favicon", true);
+ });
+
+ await BrowserTestUtils.withNewTab(
+ { gBrowser, url: "about:blank" },
+ async browser => {
+ const expectedIcon = testPath + "file_generic_favicon.ico";
+ let faviconPromise = waitForLinkAvailable(browser);
+
+ BrowserTestUtils.loadURI(browser, testPath + "file_with_favicon.html");
+ await BrowserTestUtils.browserLoaded(browser);
+
+ let iconURI = await faviconPromise;
+ is(iconURI, expectedIcon, "Got correct icon.");
+
+ BrowserTestUtils.loadURI(browser, testPath + "blank.html");
+ await BrowserTestUtils.browserLoaded(browser);
+
+ is(browser.mIconURL, null, "Should have blanked the icon.");
+ is(
+ gBrowser.getTabForBrowser(browser).getAttribute("image"),
+ "",
+ "Should have blanked the tab icon."
+ );
+ }
+ );
+});