Fix helper specs

Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>

spec/helpers/application_helper_spec.rb

@@ -67,10 +67,9 @@ describe ApplicationHelper do
     end
     it "should call gravatar_icon when no avatar is present" do
-      user = create(:user)
+      user = create(:user, email: 'test@example.com')
       user.save!
-      allow(self).to receive(:gravatar_icon).and_return('gravatar_method_called')
-      avatar_icon(user.email).to_s.should == "gravatar_method_called"
+      avatar_icon(user.email).to_s.should == "http://www.gravatar.com/avatar/55502f40dc8b7c769880b10874abc9d0?s=40&d=mm"
     end
   end
@@ -87,12 +86,12 @@ describe ApplicationHelper do
     end
     it "should return default gravatar url" do
-      allow(self).to receive(:request).and_return(double(:ssl? => false))
+      Gitlab.config.gitlab.stub(https: false)
       gravatar_icon(user_email).should match('http://www.gravatar.com/avatar/b58c6f14d292556214bd64909bcdb118')
     end
     it "should use SSL when appropriate" do
-      allow(self).to receive(:request).and_return(double(:ssl? => true))
+      Gitlab.config.gitlab.stub(https: true)
       gravatar_icon(user_email).should match('https://secure.gravatar.com')
     end