diff --git a/test/CDPSession.spec.js b/test/CDPSession.spec.js
index 4e1d0f54d5392..2647d2a2e3698 100644
--- a/test/CDPSession.spec.js
+++ b/test/CDPSession.spec.js
@@ -69,5 +69,15 @@ module.exports.addTests = function({testRunner, expect}) {
       }
       expect(error.message).toContain('Session closed.');
     });
+    it('should throw nice errors', async function({page}) {
+      const client = await page.target().createCDPSession();
+      const error = await theSourceOfTheProblems().catch(error => error);
+      expect(error.stack).toContain('theSourceOfTheProblems');
+      expect(error.message).toContain('ThisCommand.DoesNotExist');
+
+      async function theSourceOfTheProblems() {
+        await client.send('ThisCommand.DoesNotExist');
+      }
+    });
   });
 };
diff --git a/test/input.spec.js b/test/input.spec.js
index 503c25517c813..aaca2d5327900 100644
--- a/test/input.spec.js
+++ b/test/input.spec.js
@@ -34,16 +34,5 @@ module.exports.addTests = function({testRunner, expect}) {
         return promise.then(() => reader.result);
       }, input)).toBe('contents of the file');
     });
-    it_fails_ffox('keyboard.modifiers()', async({page, server}) => {
-      const keyboard = page.keyboard;
-      expect(keyboard._modifiers).toBe(0);
-      await keyboard.down('Shift');
-      expect(keyboard._modifiers).toBe(8);
-      await keyboard.down('Alt');
-      expect(keyboard._modifiers).toBe(9);
-      await keyboard.up('Shift');
-      await keyboard.up('Alt');
-      expect(keyboard._modifiers).toBe(0);
-    });
   });
 };
diff --git a/test/page.spec.js b/test/page.spec.js
index c5633f9e185c8..ec8682ca03322 100644
--- a/test/page.spec.js
+++ b/test/page.spec.js
@@ -1078,17 +1078,6 @@ module.exports.addTests = function({testRunner, expect, headless, Errors, Device
     });
   });
 
-  describe_fails_ffox('Connection', function() {
-    it('should throw nice errors', async function({page}) {
-      const error = await theSourceOfTheProblems().catch(error => error);
-      expect(error.stack).toContain('theSourceOfTheProblems');
-      expect(error.message).toContain('ThisCommand.DoesNotExist');
-      async function theSourceOfTheProblems() {
-        await page._client.send('ThisCommand.DoesNotExist');
-      }
-    });
-  });
-
   describe('Page.Events.Close', function() {
     it('should work with window.close', async function({ page, context, server }) {
       const newPagePromise = new Promise(fulfill => context.once('targetcreated', target => fulfill(target.page())));