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MiniTest shared examples
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require 'test_helper' | |
shared_examples_for 'An Adapter' do | |
describe '#read' do | |
before do | |
@adapter.write(@key = 'whiskey', @value = "Jameson's") | |
end | |
it 'reads a given key' do | |
@adapter.read(@key).must_equal(@value) | |
end | |
end | |
end |
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require 'test_helper' | |
describe Memory do | |
before do | |
@adapter = Memory.new('memory://127.0.0.1') | |
end | |
after do | |
@adapter.clear | |
end | |
it_behaves_like 'An Adapter' | |
describe '#to_s' do | |
it 'returns the name' do | |
@adapter.to_s.must_equal('Memory') | |
end | |
end | |
end |
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require 'test_helper' | |
describe Redis do | |
before do | |
@adapter = Redis.new('redis://127.0.0.1:6379') | |
end | |
after do | |
@adapter.clear | |
end | |
it_behaves_like 'An Adapter' | |
describe '#to_s' do | |
it 'returns the name' do | |
@adapter.to_s.must_equal('Redis') | |
end | |
end | |
end |
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gem 'minitest' | |
require 'minitest/spec' | |
require 'minitest/autorun' | |
MiniTest::Spec.class_eval do | |
def self.shared_examples | |
@shared_examples ||= {} | |
end | |
end | |
module MiniTest::Spec::SharedExamples | |
def shared_examples_for(desc, &block) | |
MiniTest::Spec.shared_examples[desc] = block | |
end | |
def it_behaves_like(desc) | |
self.instance_eval(&MiniTest::Spec.shared_examples[desc]) | |
end | |
end | |
Object.class_eval { include(MiniTest::Spec::SharedExamples) } |
Great code, thanks.
I just added a small change to support passing arguments to it_behaves_like
like this:
def it_behaves_like(desc, *args)
self.instance_exec(*args, &MiniTest::Spec.shared_examples[desc])
end
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Love how all of this is set up! Can you clarify where to put adapter_test.rb?