Fixed offenses in spec/models/* part 2

Changelog: fixed

.rubocop_manual_todo.yml

@@ -168,11 +168,7 @@ Rails/SaveBang:
     - 'spec/models/application_record_spec.rb'
     - 'spec/models/application_setting_spec.rb'
     - 'spec/models/clusters/applications/helm_spec.rb'
-    - 'spec/models/container_repository_spec.rb'
     - 'spec/models/design_management/version_spec.rb'
-    - 'spec/models/diff_discussion_spec.rb'
-    - 'spec/models/diff_note_spec.rb'
-    - 'spec/models/email_spec.rb'
     - 'spec/models/environment_spec.rb'
     - 'spec/models/event_spec.rb'
     - 'spec/models/fork_network_spec.rb'

spec/models/container_repository_spec.rb

@@ -320,7 +320,7 @@ RSpec.describe ContainerRepository do
 
       before do
         group.parent = test_group
-        group.save
+        group.save!
       end
 
       it { is_expected.to contain_exactly(repository, another_repository) }

spec/models/diff_discussion_spec.rb

@@ -21,9 +21,9 @@ RSpec.describe DiffDiscussion do
 
   describe '#merge_request_version_params' do
     let(:merge_request) { create(:merge_request, source_project: project, target_project: project, importing: true) }
-    let!(:merge_request_diff1) { merge_request.merge_request_diffs.create(head_commit_sha: '6f6d7e7ed97bb5f0054f2b1df789b39ca89b6ff9') }
-    let!(:merge_request_diff2) { merge_request.merge_request_diffs.create(head_commit_sha: nil) }
-    let!(:merge_request_diff3) { merge_request.merge_request_diffs.create(head_commit_sha: '5937ac0a7beb003549fc5fd26fc247adbce4a52e') }
+    let!(:merge_request_diff1) { merge_request.merge_request_diffs.create!(head_commit_sha: '6f6d7e7ed97bb5f0054f2b1df789b39ca89b6ff9') }
+    let!(:merge_request_diff2) { merge_request.merge_request_diffs.create!(head_commit_sha: nil) }
+    let!(:merge_request_diff3) { merge_request.merge_request_diffs.create!(head_commit_sha: '5937ac0a7beb003549fc5fd26fc247adbce4a52e') }
 
     context 'when the discussion is active' do
       it 'returns an empty hash, which will end up showing the latest version' do

spec/models/diff_note_spec.rb

@@ -167,7 +167,7 @@ RSpec.describe DiffNote do
               end
 
               it 'creates a diff note file' do
-                subject.save
+                subject.save!
                 expect(subject.note_diff_file).to be_present
               end
             end
@@ -188,7 +188,7 @@ RSpec.describe DiffNote do
               end
 
               it 'raises an error' do
-                expect { subject.save }.to raise_error(::DiffNote::NoteDiffFileCreationError,
+                expect { subject.save! }.to raise_error(::DiffNote::NoteDiffFileCreationError,
                                                        "Failed to find diff line for: #{diff_file.file_path}, "\
                                                        "old_line: #{position.old_line}"\
                                                        ", new_line: #{position.new_line}")
@@ -201,7 +201,7 @@ RSpec.describe DiffNote do
               end
 
               it 'creates a diff note file' do
-                subject.save
+                subject.save!
                 expect(subject.reload.note_diff_file).to be_present
               end
             end
@@ -544,7 +544,7 @@ RSpec.describe DiffNote do
       it "does not update the position" do
         expect(subject).not_to receive(:update_position)
 
-        subject.save
+        subject.save!
       end
     end
 

spec/models/email_spec.rb

@@ -24,7 +24,7 @@ RSpec.describe Email do
     let(:user) { create(:user) }
 
     it 'synchronizes the gpg keys when the email is updated' do
-      email = user.emails.create(email: 'new@email.com')
+      email = user.emails.create!(email: 'new@email.com')
 
       expect(user).to receive(:update_invalid_gpg_signatures)