1 files changed, 33 insertions, 0 deletions
diff --git a/spec/unit/license_finder/yarn_spec.rb b/spec/unit/license_finder/yarn_spec.rb
new file mode 100644
index 0000000..7062ea3
--- /dev/null
+++ b/spec/unit/license_finder/yarn_spec.rb
@@ -0,0 +1,33 @@
+# frozen_string_literal: true
+
+require 'spec_helper'
+
+RSpec.describe LicenseFinder::Yarn do
+  let(:package_manager) { described_class.new(options) }
+  let(:options) { { ignored_groups: [], project_path: project.project_path } }
+  let(:project) { ProjectHelper.new }
+
+  before do
+    project.mount(dir: project_fixture)
+  end
+
+  after do
+    project.cleanup
+  end
+
+  describe "#nodejs_version" do
+    subject { package_manager.send(:nodejs_version) }
+
+    context "when the version of nodejs is specified in a .tool-versions file" do
+      let(:project_fixture) { fixture_file('js/10.21.0-tool-versions') }
+
+      specify { expect(subject).to eql('10.21.0') }
+    end
+
+    context "when a nodejs version is not specified" do
+      let(:project_fixture) { fixture_file('js/yarn/single-declared-dependency') }
+
+      specify { expect(subject).to eql('12.18.2') }
+    end
+  end
+end