94 lines
2.3 KiB
Ruby
94 lines
2.3 KiB
Ruby
# encoding: utf-8
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require 'spec_helper'
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describe Mutant do
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describe '.singleton_subclass_instance' do
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let(:object) { described_class }
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subject { object.singleton_subclass_instance(name, superclass, &block) }
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before { subject }
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let(:name) { 'Test' }
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let(:block) { proc { def foo; end } }
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let(:superclass) { Class.new }
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let(:generated) { superclass.const_get(:Test) }
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it_should_behave_like 'a command method'
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it 'sets expected name' do
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name = generated.class.name
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expect(name).to eql("::#{self.name}")
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expect(name).to be_frozen
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end
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it 'stores instance of subclass' do
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expect(generated).to be_kind_of(superclass)
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end
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it 'evaluates the context of proc inside subclass' do
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expect(generated).to respond_to(:foo)
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end
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it 'generates nice #inspect' do
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inspect = generated.inspect
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expect(inspect).to eql("::#{self.name}")
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expect(inspect).to be_frozen
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end
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end
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describe '.isolate' do
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let(:object) { described_class }
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let(:expected_return) { :foo }
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subject { object.isolate(&block) }
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def redirect_stderr
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$stderr = File.open('/dev/null')
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end
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unless ENV['COVERAGE']
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context 'when block returns mashallable data, and process exists zero' do
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let(:block) do
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lambda do
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:data_from_child_process
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end
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end
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it { should eql(:data_from_child_process) }
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end
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end
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context 'when block does return marshallable data' do
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let(:block) do
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lambda do
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redirect_stderr
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$stderr # not mashallable, nothing written to pipe and raised exceptions in child
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end
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end
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it 'raises an exception' do
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expect { subject }.to raise_error(Mutant::IsolationError, 'Childprocess wrote un-unmarshallable data')
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end
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end
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context 'when block does return marshallable data, but process exits with nonzero exitstatus' do
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let(:block) do
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lambda do
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redirect_stderr
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at_exit do
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raise
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end
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:foo
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end
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end
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it 'raises an exception' do
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expect { subject }.to raise_error(Mutant::IsolationError, 'Childprocess exited with nonzero exit status: 1')
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end
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end
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end
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end
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