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# frozen_string_literal: true
require 'spec_helper'
RSpec.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
let(:commit) { project.commit_by(oid: 'ae73cb07c9eeaf35924a10f713b364d32b2dd34f') }
let(:diff_file) { commit.diffs.diff_file_with_new_path('Gemfile.zip') }
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_by(oid: '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)
viewer_class.extensions = %w[notjpg]
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).to receive(:raw_size).and_return(1025.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).to receive(:raw_size).and_return(6.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 '#expandable?' do
subject(:expandable) { viewer.expandable? }
let(:too_large) { false }
let(:text) { true }
before do
allow(viewer).to receive(:too_large?).and_return(too_large)
allow(viewer).to receive(:text?).and_return(text)
end
it 'is expandable' do
expect(expandable).to be_truthy
end
context 'when it is too large' do
let(:too_large) { true }
it 'is not expandable' do
expect(expandable).to be_falsey
end
end
context 'when it is not text' do
let(:text) { false }
it 'is not expandable' do
expect(expandable).to be_falsey
end
end
end
describe '#generated?' do
before do
allow(diff_file).to receive(:generated?).and_return(generated)
end
context 'when the diff file is generated' do
let(:generated) { true }
it 'returns true' do
expect(viewer.generated?).to be_truthy
end
end
context 'when the diff file is not generated' do
let(:generated) { false }
it 'returns true' do
expect(viewer.generated?).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).to receive(:raw_size).and_return(6.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
describe '#render_error_message' do
it 'returns nothing when no render_error' do
expect(viewer.render_error).to be_nil
expect(viewer.render_error_message).to be_nil
end
context 'when render_error error' do
before do
allow(viewer).to receive(:render_error).and_return(:too_large)
end
it 'returns an error message' do
expect(viewer.render_error_message).to include('it is too large')
end
it 'includes a "view the blob" link' do
expect(viewer.render_error_message).to include('view the blob')
end
end
end
end
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