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describe SourceMap::VLQ do
before do
def self.encode(x)
SourceMap::VLQ.encode(x)
end
def self.decode(x)
SourceMap::VLQ.decode(x)[0]
end
def self.decode_array(x)
SourceMap::VLQ.decode_array(x)
end
end
it 'should be able to encode 0' do
encode(0).should == 'A'
end
it 'should be able to decode 0' do
decode('A').should == 0
end
it 'should be able to encode a positive integer' do
encode(1).should == 'C'
encode(2).should == 'E'
encode(5).should == 'K'
encode(1000).should == 'w+B'
encode(100000).should == 'gqjG'
end
it 'should be able to decode a positive integer' do
decode('C').should == 1
decode('E').should == 2
decode('K').should == 5
decode('w+B').should == 1000
decode('gqjG').should == 100000
end
it 'should be able to encode a negative integer' do
encode(-1).should == 'D'
encode(-2).should == 'F'
encode(-5).should == 'L'
encode(-1000).should == 'x+B'
encode(-100000).should == 'hqjG'
end
it 'should be able to decode a negative integer' do
decode('D').should == -1
decode('F').should == -2
decode('L').should == -5
decode('x+B').should == -1000
decode('hqjG').should == -100000
end
it 'should be able to decode an array' do
decode_array('DFLx+BhqjG').should == [-1, -2, -5, -1000, -100000]
decode_array('CEKw+BgqjG').should == [1, 2, 5, 1000, 100000]
decode_array('/+Z').should == [-13295]
end
end
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