1 files changed, 77 insertions, 0 deletions
diff --git a/spec/lib/gitlab/ci/pipeline/expression/lexeme/and_spec.rb b/spec/lib/gitlab/ci/pipeline/expression/lexeme/and_spec.rb
new file mode 100644
index 00000000000..006ce4d8078
--- /dev/null
+++ b/spec/lib/gitlab/ci/pipeline/expression/lexeme/and_spec.rb
@@ -0,0 +1,77 @@
+require 'fast_spec_helper'
+require 'rspec-parameterized'
+
+describe Gitlab::Ci::Pipeline::Expression::Lexeme::And do
+  let(:left) { double('left', evaluate: nil) }
+  let(:right) { double('right', evaluate: nil) }
+
+  describe '.build' do
+    it 'creates a new instance of the token' do
+      expect(described_class.build('&&', left, right)).to be_a(described_class)
+    end
+
+    context 'with non-evaluable operands' do
+      let(:left)  { double('left') }
+      let(:right) { double('right') }
+
+      it 'raises an operator error' do
+        expect { described_class.build('&&', left, right) }.to raise_error Gitlab::Ci::Pipeline::Expression::Lexeme::Operator::OperatorError
+      end
+    end
+  end
+
+  describe '.type' do
+    it 'is an operator' do
+      expect(described_class.type).to eq :operator
+    end
+  end
+
+  describe '.precedence' do
+    it 'has a precedence' do
+      expect(described_class.precedence).to be_an Integer
+    end
+  end
+
+  describe '#evaluate' do
+    let(:operator) { described_class.new(left, right) }
+
+    subject { operator.evaluate }
+
+    before do
+      allow(left).to receive(:evaluate).and_return(left_value)
+      allow(right).to receive(:evaluate).and_return(right_value)
+    end
+
+    context 'when left and right are truthy' do
+      where(:left_value, :right_value) do
+        [true, 1, 'a'].permutation(2).to_a
+      end
+
+      with_them do
+        it { is_expected.to be_truthy }
+        it { is_expected.to eq(right_value) }
+      end
+    end
+
+    context 'when left or right is falsey' do
+      where(:left_value, :right_value) do
+        [true, false, nil].permutation(2).to_a
+      end
+
+      with_them do
+        it { is_expected.to be_falsey }
+      end
+    end
+
+    context 'when left and right are falsey' do
+      where(:left_value, :right_value) do
+        [false, nil].permutation(2).to_a
+      end
+
+      with_them do
+        it { is_expected.to be_falsey }
+        it { is_expected.to eq(left_value) }
+      end
+    end
+  end
+end