82 lines
1.7 KiB
Ruby
82 lines
1.7 KiB
Ruby
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require 'spec_helper'
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require 'cache'
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describe Gaps do
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it 'returns no gaps for empty data' do
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Gaps.new(nil, nil).should be_blank
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end
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it 'returns no gaps with one element' do
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Gaps.new([1], [1]).should be_blank
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end
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it 'returns no gaps when all elements are present' do
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Gaps.new([1,2,3], [1,2,3]).should be_blank
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end
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context "single element gap" do
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let(:gap) { Gaps.new([1,3], [1,2,3]) }
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it 'has a gap for post 3' do
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gap.should_not be_blank
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gap.before[3].should == [2]
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gap.after.should be_blank
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end
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end
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context "larger gap" do
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let(:gap) { Gaps.new([1,2,3,6,7], [1,2,3,4,5,6,7]) }
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it 'has a gap for post 6' do
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gap.should_not be_blank
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gap.before[6].should == [4,5]
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gap.after.should be_blank
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end
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end
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context "multiple gaps" do
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let(:gap) { Gaps.new([1,5,6,7,10], [1,2,3,4,5,6,7,8,9,10]) }
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it 'has both gaps' do
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gap.should_not be_blank
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gap.before[5].should == [2,3,4]
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gap.before[10].should == [8,9]
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gap.after.should be_blank
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end
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end
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context "a gap in the beginning" do
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let(:gap) { Gaps.new([2,3,4], [1,2,3,4]) }
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it 'has the gap' do
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gap.should_not be_blank
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gap.before[2].should == [1]
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gap.after.should be_blank
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end
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end
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context "a gap in the ending" do
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let(:gap) { Gaps.new([1,2,3], [1,2,3,4]) }
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it 'has the gap' do
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gap.should_not be_blank
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gap.before.should be_blank
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gap.after[3].should == [4]
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end
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end
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context "a large gap in the ending" do
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let(:gap) { Gaps.new([1,2,3], [1,2,3,4,5,6]) }
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it 'has the gap' do
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gap.should_not be_blank
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gap.before.should be_blank
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gap.after[3].should == [4,5,6]
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end
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end
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end
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