1 files changed, 35 insertions, 0 deletions
diff --git a/spec/lib/gitlab/ci/config/external/rules_spec.rb b/spec/lib/gitlab/ci/config/external/rules_spec.rb
new file mode 100644
index 00000000000..89ea13d710d
--- /dev/null
+++ b/spec/lib/gitlab/ci/config/external/rules_spec.rb
@@ -0,0 +1,35 @@
+# frozen_string_literal: true
+
+require 'fast_spec_helper'
+
+RSpec.describe Gitlab::Ci::Config::External::Rules do
+  let(:rule_hashes) {}
+
+  subject(:rules) { described_class.new(rule_hashes) }
+
+  describe '#evaluate' do
+    let(:context) { double(variables: {}) }
+
+    subject(:result) { rules.evaluate(context).pass? }
+
+    context 'when there is no rule' do
+      it { is_expected.to eq(true) }
+    end
+
+    context 'when there is a rule' do
+      let(:rule_hashes) { [{ if: '$MY_VAR == "hello"' }] }
+
+      context 'when the rule matches' do
+        let(:context) { double(variables: { MY_VAR: 'hello' }) }
+
+        it { is_expected.to eq(true) }
+      end
+
+      context 'when the rule does not match' do
+        let(:context) { double(variables: { MY_VAR: 'invalid' }) }
+
+        it { is_expected.to eq(false) }
+      end
+    end
+  end
+end