71 lines
2.1 KiB
Ruby
71 lines
2.1 KiB
Ruby
# frozen_string_literal: true
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require 'spec_helper'
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describe Gitlab::Diff::HighlightCache do
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let(:merge_request) { create(:merge_request_with_diffs) }
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subject(:cache) { described_class.new(merge_request.diffs, backend: backend) }
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describe '#decorate' do
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let(:backend) { double('backend').as_null_object }
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# Manually creates a Diff::File object to avoid triggering the cache on
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# the FileCollection::MergeRequestDiff
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let(:diff_file) do
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diffs = merge_request.diffs
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raw_diff = diffs.diffable.raw_diffs(diffs.diff_options.merge(paths: ['CHANGELOG'])).first
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Gitlab::Diff::File.new(raw_diff,
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repository: diffs.project.repository,
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diff_refs: diffs.diff_refs,
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fallback_diff_refs: diffs.fallback_diff_refs)
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end
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it 'does not calculate highlighting when reading from cache' do
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cache.write_if_empty
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cache.decorate(diff_file)
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expect_any_instance_of(Gitlab::Diff::Highlight).not_to receive(:highlight)
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diff_file.highlighted_diff_lines
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end
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it 'assigns highlighted diff lines to the DiffFile' do
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cache.write_if_empty
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cache.decorate(diff_file)
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expect(diff_file.highlighted_diff_lines.size).to be > 5
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end
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it 'submits a single reading from the cache' do
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cache.decorate(diff_file)
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cache.decorate(diff_file)
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expect(backend).to have_received(:read).with(cache.key).once
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end
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end
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describe '#write_if_empty' do
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let(:backend) { double('backend', read: {}).as_null_object }
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it 'submits a single writing to the cache' do
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cache.write_if_empty
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cache.write_if_empty
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expect(backend).to have_received(:write).with(cache.key,
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hash_including('CHANGELOG-false-false-false'),
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expires_in: 1.week).once
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end
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end
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describe '#clear' do
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let(:backend) { double('backend').as_null_object }
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it 'clears cache' do
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cache.clear
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expect(backend).to have_received(:delete).with(cache.key)
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end
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end
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end
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