Bug 1756323 - Test. r=jfkthame

Differential Revision: https://phabricator.services.mozilla.com/D139306
2022-02-21 18:26:20 +00:00 · 2022-02-21 18:26:20 +00:00 · 86cd371af9
--- a/browser/base/content/test/zoom/browser.ini
+++ b/browser/base/content/test/zoom/browser.ini
@ -26,6 +26,7 @@ https_first_disabled = true
 support-files =
  ../general/video.ogg
 skip-if = os == "win" && debug || (verify && debug && (os == 'linux')) # Bug 1315042
+[browser_tooltip_zoom.js]
 [browser_subframe_textzoom.js]
 [browser_tabswitch_zoom_flicker.js]
 https_first_disabled = true
--- a/browser/base/content/test/zoom/browser_tooltip_zoom.js
+++ b/browser/base/content/test/zoom/browser_tooltip_zoom.js
@ -0,0 +1,41 @@
+add_task(async function test_zoom_tooltip() {
+  const TEST_PAGE_URL = 'data:text/html,<html title="tooltiptext">';
+  await BrowserTestUtils.withNewTab(TEST_PAGE_URL, async function(browser) {
+    FullZoom.setZoom(2.0, browser);
+
+    const tooltip = document.getElementById("remoteBrowserTooltip");
+    const popupShown = new Promise(resolve => {
+      tooltip.addEventListener("popupshown", resolve, { once: true });
+    });
+
+    // Fire a mousemove to trigger the tooltip.
+    // Margin from the anchor and stuff depends on the platform, but these
+    // should be big enough so that all platforms pass, but not big enough so
+    // that it'd pass even when messing up the coordinates would.
+    const DISTANCE = 300;
+    const EPSILON = 25;
+
+    EventUtils.synthesizeMouse(browser, DISTANCE, DISTANCE, {
+      type: "mousemove",
+    });
+
+    await popupShown;
+    ok(
+      true,
+      `popup should be shown (coords: ${tooltip.screenX}, ${tooltip.screenY})`
+    );
+
+    isfuzzy(
+      tooltip.screenX,
+      browser.screenX + DISTANCE,
+      EPSILON,
+      "Should be at the right x position, more or less"
+    );
+    isfuzzy(
+      tooltip.screenY,
+      browser.screenY + DISTANCE,
+      EPSILON,
+      "Should be at the right y position, more or less"
+    );
+  });
+});