1 files changed, 50 insertions, 0 deletions
diff --git a/spec/lib/gitlab/ci/build/rules/rule_spec.rb b/spec/lib/gitlab/ci/build/rules/rule_spec.rb
new file mode 100644
index 00000000000..99852bd4228
--- /dev/null
+++ b/spec/lib/gitlab/ci/build/rules/rule_spec.rb
@@ -0,0 +1,50 @@
+require 'spec_helper'
+
+describe Gitlab::Ci::Build::Rules::Rule do
+  let(:seed) do
+    double('build seed',
+      to_resource: ci_build,
+      scoped_variables_hash: ci_build.scoped_variables_hash
+    )
+  end
+
+  let(:pipeline) { create(:ci_pipeline) }
+  let(:ci_build) { build(:ci_build, pipeline: pipeline) }
+  let(:rule)     { described_class.new(rule_hash) }
+
+  describe '#matches?' do
+    subject { rule.matches?(pipeline, seed) }
+
+    context 'with one matching clause' do
+      let(:rule_hash) do
+        { if: '$VAR == null', when: 'always' }
+      end
+
+      it { is_expected.to eq(true) }
+    end
+
+    context 'with two matching clauses' do
+      let(:rule_hash) do
+        { if: '$VAR == null', changes: '**/*', when: 'always' }
+      end
+
+      it { is_expected.to eq(true) }
+    end
+
+    context 'with a matching and non-matching clause' do
+      let(:rule_hash) do
+        { if: '$VAR != null', changes: '$VAR == null', when: 'always' }
+      end
+
+      it { is_expected.to eq(false) }
+    end
+
+    context 'with two non-matching clauses' do
+      let(:rule_hash) do
+        { if: '$VAR != null', changes: 'README', when: 'always' }
+      end
+
+      it { is_expected.to eq(false) }
+    end
+  end
+end