Add specs for presence of build commands

spec/models/ci/build_spec.rb

@@ -727,6 +727,44 @@ describe Ci::Build, :models do
     end
   end
 
+  describe '#has_commands?' do
+    context 'when build has commands' do
+      let(:build) do
+        create(:ci_build, commands: 'rspec')
+      end
+
+      it 'has commands' do
+        expect(build).to have_commands
+      end
+    end
+
+    context 'when does not have commands' do
+      context 'when commands are an empty string' do
+        let(:build) do
+          create(:ci_build, commands: '')
+        end
+
+        it 'has no commands' do
+          expect(build).not_to have_commands
+        end
+      end
+
+      context 'when commands are not set at all' do
+        let(:build) do
+          create(:ci_build, commands: nil)
+        end
+
+        it 'has no commands' do
+          expect(build).not_to have_commands
+        end
+      end
+    end
+
+    context 'when build does not have script or before script' do
+    end
+  end
+
+
   describe '#has_tags?' do
     context 'when build has tags' do
       subject { create(:ci_build, tag_list: ['tag']) }