Bug 1633102 - Use disableNonTestMouseEvents to prevent mouse hover or tooltips from affecting mozscreenshots a=test-only

Differential Revision: https://phabricator.services.mozilla.com/D72512

browser/tools/mozscreenshots/mozscreenshots/extension/TestRunner.jsm

@@ -141,6 +141,9 @@ var TestRunner = {
 
     let browserWindow = Services.wm.getMostRecentWindow("navigator:browser");
 
+    // Prevent the mouse cursor from causing hover styles or tooltips to appear.
+    browserWindow.windowUtils.disableNonTestMouseEvents(true);
+
     // When being automated through Marionette, Firefox shows a prominent indication
     // in the urlbar and identity block. We don't want this to show when testing browser UI.
     // Note that this doesn't prevent subsequently opened windows from showing the automation UI.
@@ -252,6 +255,7 @@ var TestRunner = {
     browserWindow.restore();
     Services.prefs.clearUserPref("ui.caretBlinkTime");
     Services.prefs.clearUserPref("ui.prefersReducedMotion");
+    browserWindow.windowUtils.disableNonTestMouseEvents(false);
   },
 
   // helpers

browser/tools/mozscreenshots/mozscreenshots/extension/configurations/DevTools.jsm

@@ -64,7 +64,7 @@ var DevTools = {
         let target = await getTargetForSelectedTab();
         let toolbox = await gDevTools.showToolbox(target, "inspector", "right");
         this.selectors = [selectToolbox.bind(null, toolbox)];
-        await new Promise(resolve => setTimeout(resolve, 500));
+        await new Promise(resolve => setTimeout(resolve, 1000));
       },
     },
     undockedToolbox: {
@@ -77,7 +77,7 @@ var DevTools = {
           "window"
         );
         this.selectors = [selectToolbox.bind(null, toolbox)];
-        await new Promise(resolve => setTimeout(resolve, 500));
+        await new Promise(resolve => setTimeout(resolve, 1000));
       },
     },
   },