1 files changed, 39 insertions, 0 deletions
diff --git a/spec/lib/gitlab/ci/interpolation/block_spec.rb b/spec/lib/gitlab/ci/interpolation/block_spec.rb
new file mode 100644
index 00000000000..7f2be505d17
--- /dev/null
+++ b/spec/lib/gitlab/ci/interpolation/block_spec.rb
@@ -0,0 +1,39 @@
+# frozen_string_literal: true
+
+require 'fast_spec_helper'
+
+RSpec.describe Gitlab::Ci::Interpolation::Block, feature_category: :pipeline_authoring do
+  subject { described_class.new(block, data, ctx) }
+
+  let(:data) do
+    'inputs.data'
+  end
+
+  let(:block) do
+    "$[[ #{data} ]]"
+  end
+
+  let(:ctx) do
+    { inputs: { data: 'abc' }, env: { 'ENV' => 'dev' } }
+  end
+
+  it 'knows its content' do
+    expect(subject.content).to eq 'inputs.data'
+  end
+
+  it 'properly evaluates the access pattern' do
+    expect(subject.value).to eq 'abc'
+  end
+
+  describe '.match' do
+    it 'matches each block in a string' do
+      expect { |b| described_class.match('$[[ access1 ]] $[[ access2 ]]', &b) }
+        .to yield_successive_args(['$[[ access1 ]]', 'access1'], ['$[[ access2 ]]', 'access2'])
+    end
+
+    it 'matches an empty block' do
+      expect { |b| described_class.match('$[[]]', &b) }
+        .to yield_with_args('$[[]]', '')
+    end
+  end
+end