1 files changed, 42 insertions, 0 deletions
diff --git a/spec/lib/gitlab/ci/build/rules/rule/clause/changes_spec.rb b/spec/lib/gitlab/ci/build/rules/rule/clause/changes_spec.rb
index cf52f601006..d20ea6c9202 100644
--- a/spec/lib/gitlab/ci/build/rules/rule/clause/changes_spec.rb
+++ b/spec/lib/gitlab/ci/build/rules/rule/clause/changes_spec.rb
@@ -13,5 +13,47 @@ RSpec.describe Gitlab::Ci::Build::Rules::Rule::Clause::Changes do
 
       subject { described_class.new(globs).satisfied_by?(pipeline, nil) }
     end
+
+    context 'when using variable expansion' do
+      let(:pipeline) { build(:ci_pipeline) }
+      let(:modified_paths) { ['helm/test.txt'] }
+      let(:globs) { ['$HELM_DIR/**/*'] }
+      let(:context) { double('context') }
+
+      subject { described_class.new(globs).satisfied_by?(pipeline, context) }
+
+      before do
+        allow(pipeline).to receive(:modified_paths).and_return(modified_paths)
+      end
+
+      context 'when context is nil' do
+        let(:context) {}
+
+        it { is_expected.to be_falsey }
+      end
+
+      context 'when context has the specified variables' do
+        let(:variables) do
+          [{ key: "HELM_DIR", value: "helm", public: true }]
+        end
+
+        before do
+          allow(context).to receive(:variables).and_return(variables)
+        end
+
+        it { is_expected.to be_truthy }
+      end
+
+      context 'when variable expansion does not match' do
+        let(:globs) { ['path/with/$in/it/*'] }
+        let(:modified_paths) { ['path/with/$in/it/file.txt'] }
+
+        before do
+          allow(context).to receive(:variables).and_return([])
+        end
+
+        it { is_expected.to be_truthy }
+      end
+    end
   end
 end