/
adapter_spec.rb
69 lines (58 loc) · 2.36 KB
/
adapter_spec.rb
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# frozen_string_literal: true
RSpec.describe Listen::Adapter do
let(:listener) { instance_double(Listen::Listener, options: {}) }
before do
allow(Listen::Adapter::BSD).to receive(:usable?) { false }
allow(Listen::Adapter::Darwin).to receive(:usable?) { false }
allow(Listen::Adapter::Linux).to receive(:usable?) { false }
allow(Listen::Adapter::Windows).to receive(:usable?) { false }
end
describe '.select' do
it 'returns Polling adapter if forced' do
klass = Listen::Adapter.select(force_polling: true)
expect(klass).to eq Listen::Adapter::Polling
end
it 'returns BSD adapter when usable' do
allow(Listen::Adapter::BSD).to receive(:usable?) { true }
klass = Listen::Adapter.select
expect(klass).to eq Listen::Adapter::BSD
end
it 'returns Darwin adapter when usable' do
allow(Listen::Adapter::Darwin).to receive(:usable?) { true }
klass = Listen::Adapter.select
expect(klass).to eq Listen::Adapter::Darwin
end
it 'returns Linux adapter when usable' do
allow(Listen::Adapter::Linux).to receive(:usable?) { true }
klass = Listen::Adapter.select
expect(klass).to eq Listen::Adapter::Linux
end
it 'returns Windows adapter when usable' do
allow(Listen::Adapter::Windows).to receive(:usable?) { true }
klass = Listen::Adapter.select
expect(klass).to eq Listen::Adapter::Windows
end
context 'no usable adapters' do
before { allow(Kernel).to receive(:warn) }
it 'returns Polling adapter' do
klass = Listen::Adapter.select(force_polling: true)
expect(klass).to eq Listen::Adapter::Polling
end
it 'warns polling fallback with default message' do
msg = described_class::POLLING_FALLBACK_MESSAGE
expect(Kernel).to receive(:warn).with("[Listen warning]:\n #{msg}")
Listen::Adapter.select
end
it "doesn't warn if polling_fallback_message is false" do
expect(Kernel).to_not receive(:warn)
Listen::Adapter.select(polling_fallback_message: false)
end
it 'warns polling fallback with custom message if set' do
expected_msg = "[Listen warning]:\n custom fallback message"
expect(Kernel).to receive(:warn).with(expected_msg)
msg = 'custom fallback message'
Listen::Adapter.select(polling_fallback_message: msg)
end
end
end
end