99 lines
2.6 KiB
Ruby
99 lines
2.6 KiB
Ruby
require 'support/exit_helpers'
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module Uh
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module WM
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RSpec.describe CLI do
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include ExitHelpers
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let(:stdout) { StringIO.new }
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let(:stderr) { StringIO.new }
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let(:arguments) { [] }
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subject(:cli) { described_class.new arguments, stdout: stdout }
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describe '.run' do
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subject(:run) do
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described_class.run arguments, stdout: stdout, stderr: stderr
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end
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it 'builds a new CLI with given arguments' do
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expect(described_class)
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.to receive(:new).with(arguments, stdout: stdout).and_call_original
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run
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end
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it 'parses new CLI arguments' do
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cli
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allow(described_class).to receive(:new) { cli }
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expect(cli).to receive :parse_arguments!
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run
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end
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it 'runs new CLI' do
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cli
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allow(described_class).to receive(:new) { cli }
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expect(cli).to receive :run
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run
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end
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context 'with invalid arguments' do
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let(:arguments) { %w[--unknown-option] }
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it 'prints the usage on standard error stream' do
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trap_exit { run }
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expect(stderr.string).to match /\AUsage: .+/
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end
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it 'exits with a return status of 64' do
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expect { run }.to raise_error(SystemExit) do |e|
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expect(e.status).to eq 64
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end
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end
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end
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end
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describe '#initialize' do
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it 'builds an env with given stdout' do
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expect(cli.env.output).to be stdout
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end
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it 'syncs the output' do
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expect(stdout).to receive(:sync=).with(true)
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cli
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end
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end
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describe '#run' do
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it 'runs a runner with the env' do
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expect(Runner).to receive(:run).with(cli.env)
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cli.run
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end
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end
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describe '#parse_arguments!' do
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context 'with help option' do
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let(:arguments) { %w[-h] }
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it 'prints the usage banner on standard output' do
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trap_exit { cli.parse_arguments! }
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expect(stdout.string).to match /\AUsage: .+/
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end
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it 'prints options usage on standard output' do
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trap_exit { cli.parse_arguments! }
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expect(stdout.string).to match /\n^options:\n\s+-/
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end
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end
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context 'with invalid option' do
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let(:arguments) { %w[--unknown-option] }
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it 'raises a CLI::ArgumentError' do
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expect { cli.parse_arguments! }
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.to raise_error CLI::ArgumentError
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end
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end
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end
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end
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end
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end
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