require 'spec_helper' describe 'Gitlab::Popen' do let(:path) { Rails.root.join('tmp').to_s } before do @klass = Class.new(Object) @klass.send(:include, Gitlab::Popen) end context 'zero status' do before do @output, @status = @klass.new.popen(%w(ls), path) end it { expect(@status).to be_zero } it { expect(@output).to include('cache') } end context 'non-zero status' do before do @output, @status = @klass.new.popen(%w(cat NOTHING), path) end it { expect(@status).to eq(1) } it { expect(@output).to include('No such file or directory') } end context 'unsafe string command' do it 'raises an error when it gets called with a string argument' do expect { @klass.new.popen('ls', path) }.to raise_error(RuntimeError) end end context 'with custom options' do let(:vars) { { 'foobar' => 123, 'PWD' => path } } let(:options) { { chdir: path } } it 'calls popen3 with the provided environment variables' do expect(Open3).to receive(:popen3).with(vars, 'ls', options) @output, @status = @klass.new.popen(%w(ls), path, { 'foobar' => 123 }) end end context 'without a directory argument' do before do @output, @status = @klass.new.popen(%w(ls)) end it { expect(@status).to be_zero } it { expect(@output).to include('spec') } end context 'use stdin' do before do @output, @status = @klass.new.popen(%w[cat]) { |stdin| stdin.write 'hello' } end it { expect(@status).to be_zero } it { expect(@output).to eq('hello') } end end