51 lines
1.1 KiB
Ruby
51 lines
1.1 KiB
Ruby
require 'spec_helper'
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describe Mutant::Mutator, '#emit_new' do
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subject { object.send(:emit_new) { node } }
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class Block
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attr_reader :arguments
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def called?
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defined?(@arguments)
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end
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def call(*arguments)
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@arguments = arguments
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end
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end
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let(:object) { class_under_test.new(wrapped_node, block) }
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let(:block) { Block.new }
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let(:wrapped_node) { '"foo"'.to_ast }
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let(:class_under_test) do
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Class.new(described_class) do
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def dispatch
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#noop
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end
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end
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end
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context 'when new AST is generated' do
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let(:node) { '"bar"'.to_ast }
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it 'should call block' do
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subject
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block.should be_called
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end
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it 'should call block with node' do
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subject
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block.arguments.should eql([node])
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end
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end
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context 'when new AST could not be generated' do
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let(:node) { '"foo"'.to_ast }
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it 'should raise error' do
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expect { subject }.to raise_error(RuntimeError, 'New AST could not be generated after 3 attempts')
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end
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end
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end
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