Fix remaining failures in shoulda-matcher

Starting with Rails 5, belongs_to now adds a presence validation to the
association, and so as of shoulda-matchers 4.0.0 the belong_to matcher
follows suit and tests that this validation is there by setting the
association to nil and asserting that there are validation errors. This
exposed an error with the `validate_branches` method: we need to check
the source and target project exist.

1 files changed, 2 insertions, 2 deletions

diff --git a/spec/models/deployment_spec.rb b/spec/models/deployment_spec.rb
index f51322e1404..1dceef3fc00 100644
--- a/spec/models/deployment_spec.rb
+++ b/spec/models/deployment_spec.rb
@@ -5,8 +5,8 @@ require 'spec_helper'
 describe Deployment do
   subject { build(:deployment) }
 
-  it { is_expected.to belong_to(:project) }
-  it { is_expected.to belong_to(:environment) }
+  it { is_expected.to belong_to(:project).required }
+  it { is_expected.to belong_to(:environment).required }
   it { is_expected.to belong_to(:user) }
   it { is_expected.to belong_to(:deployable) }