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80 lines
1.8 KiB
Ruby
80 lines
1.8 KiB
Ruby
require 'rails_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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expect(Gaps.new(nil, nil)).to be_blank
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end
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it 'returns no gaps with one element' do
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expect(Gaps.new([1], [1])).to 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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expect(Gaps.new([1, 2, 3], [1, 2, 3])).to 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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expect(gap).not_to be_blank
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expect(gap.before[3]).to eq([2])
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expect(gap.after).to 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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expect(gap).not_to be_blank
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expect(gap.before[6]).to eq([4, 5])
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expect(gap.after).to 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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expect(gap).not_to be_blank
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expect(gap.before[5]).to eq([2, 3, 4])
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expect(gap.before[10]).to eq([8, 9])
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expect(gap.after).to 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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expect(gap).not_to be_blank
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expect(gap.before[2]).to eq([1])
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expect(gap.after).to 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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expect(gap).not_to be_blank
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expect(gap.before).to be_blank
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expect(gap.after[3]).to eq([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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expect(gap).not_to be_blank
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expect(gap.before).to be_blank
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expect(gap.after[3]).to eq([4, 5, 6])
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end
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end
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end
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