1 files changed, 39 insertions, 0 deletions
diff --git a/spec/lib/gitlab/ci/pipeline/expression/lexeme/not_equals_spec.rb b/spec/lib/gitlab/ci/pipeline/expression/lexeme/not_equals_spec.rb
new file mode 100644
index 00000000000..9aa2f4efd67
--- /dev/null
+++ b/spec/lib/gitlab/ci/pipeline/expression/lexeme/not_equals_spec.rb
@@ -0,0 +1,39 @@
+require 'spec_helper'
+
+describe Gitlab::Ci::Pipeline::Expression::Lexeme::NotEquals do
+  let(:left) { double('left') }
+  let(:right) { double('right') }
+
+  describe '.build' do
+    it 'creates a new instance of the token' do
+      expect(described_class.build('!=', left, right))
+        .to be_a(described_class)
+    end
+  end
+
+  describe '.type' do
+    it 'is an operator' do
+      expect(described_class.type).to eq :operator
+    end
+  end
+
+  describe '#evaluate' do
+    it 'returns true when left and right are not equal' do
+      allow(left).to receive(:evaluate).and_return(1)
+      allow(right).to receive(:evaluate).and_return(2)
+
+      operator = described_class.new(left, right)
+
+      expect(operator.evaluate(VARIABLE: 3)).to eq true
+    end
+
+    it 'returns false when left and right are equal' do
+      allow(left).to receive(:evaluate).and_return(1)
+      allow(right).to receive(:evaluate).and_return(1)
+
+      operator = described_class.new(left, right)
+
+      expect(operator.evaluate(VARIABLE: 3)).to eq false
+    end
+  end
+end