Created
March 1, 2009 17:25
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class Decomposer | |
def initialize params | |
@uv_gen = params[:uv_gen] | |
@qu_gen = params[:qu_gen] | |
@qv_gen = params[:qv_gen] | |
end | |
def each | |
@uv_gen.each do |u, v| | |
@qu_gen.each u, v do |qu| | |
@qv_gen.each u, v, qu do |g, qv| | |
yield [u, v, qu, g, qv] | |
end | |
end | |
end | |
end | |
end | |
describe Decomposer do | |
context 'given that the three generators are working properly' do | |
before do | |
@uv_gen = mock 'UVGenerator' | |
@qu_gen = mock 'QuGenerator' | |
@qv_gen = mock 'QvGenerator' | |
@qu1, @qu2, @g1, @g2, @qv1, @qv2 = mock('Blanket'), mock('Blanket'), mock('Blanket'), mock('Blanket'), mock('Blanket'), mock('Blanket') | |
end | |
it 'should poll the generators and yield the resulting decompositions one by one' do | |
@uv_gen.should_receive(:each).and_yield([0,1,2], [3]).and_yield [0,1], [2,3] | |
@qu_gen.should_receive(:each).with([0,1,2], [3]).and_yield @qu1 | |
@qu_gen.should_receive(:each).with([0,1], [2,3]).and_yield @qu2 | |
@qv_gen.should_receive(:each).with([0,1,2], [3], @qu1).and_yield @g1, @qv1 | |
@qv_gen.should_receive(:each).with([0,1], [2,3], @qu2).and_yield @g2, @qv2 | |
decomposer = Decomposer.new :uv_gen => @uv_gen, :qu_gen => @qu_gen, :qv_gen => @qv_gen | |
result = [] | |
decomposer.each { |dec| result << dec } | |
result.first.should == [[0,1,2], [3], @qu1, @g1, @qv1] | |
result.last.should == [[0,1], [2,3], @qu2, @g2, @qv2] | |
end | |
it 'should poll the generators and yield the resulting decompositions one by one' do | |
@uv_gen.stub!(:each).and_yield([0,1,2], [3]).and_yield [0,1], [2,3] | |
@qu_gen.stub!(:each).with([0,1,2], [3]).and_yield @qu1 | |
@qu_gen.stub!(:each).with([0,1], [2,3]).and_yield @qu2 | |
@qv_gen.stub!(:each).with([0,1,2], [3], @qu1).and_yield @g1, @qv1 | |
@qv_gen.stub!(:each).with([0,1], [2,3], @qu2).and_yield @g2, @qv2 | |
enumerator = Decomposer.new(:uv_gen => @uv_gen, :qu_gen => @qu_gen, :qv_gen => @qv_gen).to_enum | |
enumerator.next.should == [[0,1,2], [3], @qu1, @g1, @qv1] | |
enumerator.next.should == [[0,1], [2,3], @qu2, @g2, @qv2] | |
end | |
end | |
end |
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