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require 'spec_helper'
describe DiffViewer::Base do
include FakeBlobHelpers
let(:project) { create(:project, :repository) }
let(:commit) { project.commit('570e7b2abdd848b95f2f578043fc23bd6f6fd24d') }
let(:diff_file) { commit.diffs.diff_file_with_new_path('files/ruby/popen.rb') }
let(:viewer_class) do
Class.new(described_class) do
include DiffViewer::ServerSide
self.extensions = %w(jpg)
self.binary = true
self.collapse_limit = 1.megabyte
self.size_limit = 5.megabytes
end
end
let(:viewer) { viewer_class.new(diff_file) }
describe '.can_render?' do
context 'when the extension is supported' do
let(:commit) { project.commit('2f63565e7aac07bcdadb654e253078b727143ec4') }
let(:diff_file) { commit.diffs.diff_file_with_new_path('files/images/6049019_460s.jpg') }
context 'when the binaryness matches' do
it 'returns true' do
expect(viewer_class.can_render?(diff_file)).to be_truthy
end
end
context 'when the binaryness does not match' do
before do
allow(diff_file.old_blob).to receive(:binary?).and_return(false)
allow(diff_file.new_blob).to receive(:binary?).and_return(false)
end
it 'returns false' do
expect(viewer_class.can_render?(diff_file)).to be_falsey
end
end
end
context 'when the file type is supported' do
let(:commit) { project.commit('1a0b36b3cdad1d2ee32457c102a8c0b7056fa863') }
let(:diff_file) { commit.diffs.diff_file_with_new_path('LICENSE') }
before do
viewer_class.file_types = %i(license)
viewer_class.binary = false
end
context 'when the binaryness matches' do
it 'returns true' do
expect(viewer_class.can_render?(diff_file)).to be_truthy
end
end
context 'when the binaryness does not match' do
before do
allow(diff_file.old_blob).to receive(:binary?).and_return(true)
allow(diff_file.new_blob).to receive(:binary?).and_return(true)
end
it 'returns false' do
expect(viewer_class.can_render?(diff_file)).to be_falsey
end
end
end
context 'when the extension and file type are not supported' do
it 'returns false' do
expect(viewer_class.can_render?(diff_file)).to be_falsey
end
end
context 'when the file was renamed and only the old blob is supported' do
let(:commit) { project.commit('2f63565e7aac07bcdadb654e253078b727143ec4') }
let(:diff_file) { commit.diffs.diff_file_with_new_path('files/images/6049019_460s.jpg') }
before do
allow(diff_file).to receive(:renamed_file?).and_return(true)
allow(diff_file.new_blob).to receive(:extension).and_return('jpeg')
end
it 'returns false' do
expect(viewer_class.can_render?(diff_file)).to be_falsey
end
end
end
describe '#collapsed?' do
context 'when the combined blob size is larger than the collapse limit' do
before do
allow(diff_file.old_blob).to receive(:raw_size).and_return(512.kilobytes)
allow(diff_file.new_blob).to receive(:raw_size).and_return(513.kilobytes)
end
it 'returns true' do
expect(viewer.collapsed?).to be_truthy
end
end
context 'when the combined blob size is smaller than the collapse limit' do
it 'returns false' do
expect(viewer.collapsed?).to be_falsey
end
end
end
describe '#too_large?' do
context 'when the combined blob size is larger than the size limit' do
before do
allow(diff_file.old_blob).to receive(:raw_size).and_return(2.megabytes)
allow(diff_file.new_blob).to receive(:raw_size).and_return(4.megabytes)
end
it 'returns true' do
expect(viewer.too_large?).to be_truthy
end
end
context 'when the blob size is smaller than the size limit' do
it 'returns false' do
expect(viewer.too_large?).to be_falsey
end
end
end
describe '#render_error' do
context 'when the combined blob size is larger than the size limit' do
before do
allow(diff_file.old_blob).to receive(:raw_size).and_return(2.megabytes)
allow(diff_file.new_blob).to receive(:raw_size).and_return(4.megabytes)
end
it 'returns :too_large' do
expect(viewer.render_error).to eq(:too_large)
end
end
context 'when the combined blob size is smaller than the size limit' do
it 'returns nil' do
expect(viewer.render_error).to be_nil
end
end
end
end
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