78 lines
2.1 KiB
Ruby
78 lines
2.1 KiB
Ruby
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require 'spec_helper'
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require 'stringio'
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describe 'pebble null object' do
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class Caller
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def call_method(thing)
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thing.info
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end
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def call_method_inside_block(thing)
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2.times.each { thing.info }
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end
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def call_method_inside_nested_block(thing)
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2.times.each { 2.times.each { thing.info } }
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end
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end
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subject(:null) { null_class.new }
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let(:null_class) do
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output = test_output # getting local binding
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Naught.build do |b|
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b.pebble output
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end
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end
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let(:test_output) { StringIO.new }
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it 'prints the name of the method called' do
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expect(test_output).to receive(:puts).with(/^info\(\)/)
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null.info
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end
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it 'prints the arguments received' do
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expect(test_output).to receive(:puts).with(/^info\(\'foo\', 5, \:sym\)/)
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null.info('foo', 5, :sym)
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end
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it 'prints the name of the caller' do
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expect(test_output).to receive(:puts).with(/from call_method$/)
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Caller.new.call_method(null)
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end
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it 'returns self' do
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expect(null.info).to be(null)
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end
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context 'when is called from a block' do
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it 'prints the indication of a block',
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:pending => jruby? || rubinius? || ruby_18? do
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expect(test_output).to receive(:puts).twice.
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with(/from block/)
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Caller.new.call_method_inside_block(null)
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end
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it 'prints the name of the method that has the block' do
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expect(test_output).to receive(:puts).twice.
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with(/call_method_inside_block$/)
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Caller.new.call_method_inside_block(null)
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end
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end
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context 'when is called from many levels blocks' do
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it 'prints the indication of blocks and its levels',
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:pending => jruby? || rubinius? || ruby_18? do
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expect(test_output).to receive(:puts).exactly(4).times.
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with(/from block \(2 levels\)/)
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Caller.new.call_method_inside_nested_block(null)
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end
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it 'prints the name of the method that has the block' do
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expect(test_output).to receive(:puts).exactly(4).times.
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with(/call_method_inside_nested_block$/)
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Caller.new.call_method_inside_nested_block(null)
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end
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end
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end
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