Parse composite license expressions

* docs: Add changelog entry
* fix: update spec to match expected behaviour

1 files changed, 45 insertions, 0 deletions

diff --git a/spec/unit/license_finder/dependency_spec.rb b/spec/unit/license_finder/dependency_spec.rb
new file mode 100644
index 0000000..d4642d4
--- /dev/null
+++ b/spec/unit/license_finder/dependency_spec.rb
@@ -0,0 +1,45 @@
+# frozen_string_literal: true
+
+require 'spec_helper'
+
+RSpec.describe LicenseFinder::Dependency do
+  describe "#licenses" do
+    subject { described_class.new('bundler', 'example', '0.1.0', { spec_licenses: declared_licenses }).licenses }
+
+    context "when the declared licenses is a single known license" do
+      let(:declared_licenses) { ['MIT'] }
+
+      specify { expect(subject.map(&:short_name)).to match_array(['MIT']) }
+    end
+
+    context "when the declared licenses is a many known licenses" do
+      let(:declared_licenses) { ['MIT', 'Apache-2.0'] }
+
+      specify { expect(subject.map(&:short_name)).to match_array(%w[MIT Apache2]) }
+    end
+
+    context "when the declared licenses is x OR y" do
+      let(:declared_licenses) { ['MIT OR Apache-2.0'] }
+
+      specify { expect(subject.map(&:short_name)).to match_array(%w[MIT Apache2]) }
+    end
+
+    context "when the declared licenses is x OR y OR z" do
+      let(:declared_licenses) { ['(BSD-2-Clause OR MIT OR Apache-2.0)'] }
+
+      specify { expect(subject.map(&:short_name)).to match_array(%w[SimplifiedBSD MIT Apache2]) }
+    end
+
+    context "when the declared licenses is x AND y" do
+      let(:declared_licenses) { ['MIT AND Apache-2.0'] }
+
+      specify { expect(subject.map(&:short_name)).to match_array(%w[MIT Apache2]) }
+    end
+
+    context "when the declared licenses is x WITH exception" do
+      let(:declared_licenses) { ['Apache-2.0 WITH LLVM-exception'] }
+
+      specify { expect(subject.map(&:short_name)).to match_array(%w[Apache2 LLVM-exception]) }
+    end
+  end
+end