1 files changed, 36 insertions, 0 deletions
diff --git a/spec/scripts/lib/glfm/shared_spec.rb b/spec/scripts/lib/glfm/shared_spec.rb
new file mode 100644
index 00000000000..f6792b93718
--- /dev/null
+++ b/spec/scripts/lib/glfm/shared_spec.rb
@@ -0,0 +1,36 @@
+# frozen_string_literal: true
+require 'fast_spec_helper'
+require_relative '../../../../scripts/lib/glfm/shared'
+
+RSpec.describe Glfm::Shared do
+  let(:instance) do
+    Class.new do
+      include Glfm::Shared
+    end.new
+  end
+
+  describe '#run_external_cmd' do
+    it 'works' do
+      expect(instance.run_external_cmd('echo "hello"')).to eq("hello\n")
+    end
+
+    context 'when command fails' do
+      it 'raises error' do
+        invalid_cmd = 'ls nonexistent_file'
+        expect(instance).to receive(:warn).with(/Error running command `#{invalid_cmd}`/)
+        expect(instance).to receive(:warn).with(/nonexistent_file.*no such file/i)
+        expect { instance.run_external_cmd(invalid_cmd) }.to raise_error(RuntimeError)
+      end
+    end
+  end
+
+  describe '#output' do
+    # NOTE: The #output method is normally always mocked, to prevent output while the specs are
+    # running. However, in order to provide code coverage for the method, we have to invoke
+    # it at least once.
+    it 'has code coverage' do
+      allow(instance).to receive(:puts)
+      instance.output('')
+    end
+  end
+end