gitlab-org--gitlab-foss/spec/helpers/diff_helper_spec.rb
Sean McGivern fdfb4bbe5c Fix diff commenting results just after changing view
When you change the diff view (inline / side-by-side), we set a cookie based on
that new view. When you add a comment, we choose the style to use in the
response based on that cookie.

However, when you have just changed diff style, the request cookie will contain
the old value, so we should use the view param instead.
2017-07-28 13:59:57 +01:00

269 lines
10 KiB
Ruby

require 'spec_helper'
describe DiffHelper do
include RepoHelpers
let(:project) { create(:project) }
let(:repository) { project.repository }
let(:commit) { project.commit(sample_commit.id) }
let(:diffs) { commit.raw_diffs }
let(:diff) { diffs.first }
let(:diff_refs) { commit.diff_refs }
let(:diff_file) { Gitlab::Diff::File.new(diff, diff_refs: diff_refs, repository: repository) }
describe 'diff_view' do
it 'uses the view param over the cookie' do
controller.params[:view] = 'parallel'
helper.request.cookies[:diff_view] = 'inline'
expect(helper.diff_view).to eq :parallel
end
it 'returns the default value when the view param is invalid' do
controller.params[:view] = 'invalid'
expect(helper.diff_view).to eq :inline
end
it 'returns a valid value when cookie is set' do
helper.request.cookies[:diff_view] = 'parallel'
expect(helper.diff_view).to eq :parallel
end
it 'returns the default value when cookie is invalid' do
helper.request.cookies[:diff_view] = 'invalid'
expect(helper.diff_view).to eq :inline
end
it 'returns the default value when cookie is nil' do
expect(helper.request.cookies).to be_empty
expect(helper.diff_view).to eq :inline
end
end
describe 'diff_options' do
it 'returns no collapse false' do
expect(diff_options).to include(expanded: false)
end
it 'returns no collapse true if expanded' do
allow(controller).to receive(:params) { { expanded: true } }
expect(diff_options).to include(expanded: true)
end
it 'returns no collapse true if action name diff_for_path' do
allow(controller).to receive(:action_name) { 'diff_for_path' }
expect(diff_options).to include(expanded: true)
end
it 'returns paths if action name diff_for_path and param old path' do
allow(controller).to receive(:params) { { old_path: 'lib/wadus.rb' } }
allow(controller).to receive(:action_name) { 'diff_for_path' }
expect(diff_options[:paths]).to include('lib/wadus.rb')
end
it 'returns paths if action name diff_for_path and param new path' do
allow(controller).to receive(:params) { { new_path: 'lib/wadus.rb' } }
allow(controller).to receive(:action_name) { 'diff_for_path' }
expect(diff_options[:paths]).to include('lib/wadus.rb')
end
end
describe '#diff_line_content' do
context 'when the line is empty' do
it 'returns a non breaking space' do
expect(diff_line_content(nil)).to eq(' ')
end
it 'returns an HTML-safe string' do
expect(diff_line_content(nil)).to be_html_safe
end
end
context 'when the line is not empty' do
context 'when the line starts with +, -, or a space' do
it 'strips the first character' do
expect(diff_line_content('+new line')).to eq('new line')
expect(diff_line_content('-new line')).to eq('new line')
expect(diff_line_content(' new line')).to eq('new line')
end
context 'when the line is HTML-safe' do
it 'returns an HTML-safe string' do
expect(diff_line_content('+new line'.html_safe)).to be_html_safe
expect(diff_line_content('-new line'.html_safe)).to be_html_safe
expect(diff_line_content(' new line'.html_safe)).to be_html_safe
end
end
context 'when the line is not HTML-safe' do
it 'returns a non-HTML-safe string' do
expect(diff_line_content('+new line')).not_to be_html_safe
expect(diff_line_content('-new line')).not_to be_html_safe
expect(diff_line_content(' new line')).not_to be_html_safe
end
end
end
context 'when the line does not start with a +, -, or a space' do
it 'returns the string' do
expect(diff_line_content('@@ -6,12 +6,18 @@ module Popen')).to eq('@@ -6,12 +6,18 @@ module Popen')
end
context 'when the line is HTML-safe' do
it 'returns an HTML-safe string' do
expect(diff_line_content('@@ -6,12 +6,18 @@ module Popen'.html_safe)).to be_html_safe
end
end
context 'when the line is not HTML-safe' do
it 'returns a non-HTML-safe string' do
expect(diff_line_content('@@ -6,12 +6,18 @@ module Popen')).not_to be_html_safe
end
end
end
end
end
describe "#mark_inline_diffs" do
let(:old_line) { %{abc 'def'} }
let(:new_line) { %{abc "def"} }
it "returns strings with marked inline diffs" do
marked_old_line, marked_new_line = mark_inline_diffs(old_line, new_line)
expect(marked_old_line).to eq(%q{abc <span class="idiff left right deletion">&#39;def&#39;</span>})
expect(marked_old_line).to be_html_safe
expect(marked_new_line).to eq(%q{abc <span class="idiff left right addition">&quot;def&quot;</span>})
expect(marked_new_line).to be_html_safe
end
end
describe '#parallel_diff_discussions' do
let(:discussion) { { 'abc_3_3' => 'comment' } }
let(:diff_file) { double(line_code: 'abc_3_3') }
before do
helper.instance_variable_set(:@grouped_diff_discussions, discussion)
end
it 'does not put comments on nonewline lines' do
left = Gitlab::Diff::Line.new('\\nonewline', 'old-nonewline', 3, 3, 3)
right = Gitlab::Diff::Line.new('\\nonewline', 'new-nonewline', 3, 3, 3)
result = helper.parallel_diff_discussions(left, right, diff_file)
expect(result).to eq([nil, nil])
end
it 'puts comments on added lines' do
left = Gitlab::Diff::Line.new('\\nonewline', 'old-nonewline', 3, 3, 3)
right = Gitlab::Diff::Line.new('new line', 'new', 3, 3, 3)
result = helper.parallel_diff_discussions(left, right, diff_file)
expect(result).to eq([nil, 'comment'])
end
it 'puts comments on unchanged lines' do
left = Gitlab::Diff::Line.new('unchanged line', nil, 3, 3, 3)
right = Gitlab::Diff::Line.new('unchanged line', nil, 3, 3, 3)
result = helper.parallel_diff_discussions(left, right, diff_file)
expect(result).to eq(['comment', nil])
end
end
describe "#diff_match_line" do
let(:old_pos) { 40 }
let(:new_pos) { 50 }
let(:text) { 'some_text' }
it "generates foldable top match line for inline view with empty text by default" do
output = diff_match_line old_pos, new_pos
expect(output).to be_html_safe
expect(output).to have_css "td:nth-child(1):not(.js-unfold-bottom).diff-line-num.unfold.js-unfold.old_line[data-linenumber='#{old_pos}']", text: '...'
expect(output).to have_css "td:nth-child(2):not(.js-unfold-bottom).diff-line-num.unfold.js-unfold.new_line[data-linenumber='#{new_pos}']", text: '...'
expect(output).to have_css 'td:nth-child(3):not(.parallel).line_content.match', text: ''
end
it "allows to define text and bottom option" do
output = diff_match_line old_pos, new_pos, text: text, bottom: true
expect(output).to be_html_safe
expect(output).to have_css "td:nth-child(1).diff-line-num.unfold.js-unfold.js-unfold-bottom.old_line[data-linenumber='#{old_pos}']", text: '...'
expect(output).to have_css "td:nth-child(2).diff-line-num.unfold.js-unfold.js-unfold-bottom.new_line[data-linenumber='#{new_pos}']", text: '...'
expect(output).to have_css 'td:nth-child(3):not(.parallel).line_content.match', text: text
end
it "generates match line for parallel view" do
output = diff_match_line old_pos, new_pos, text: text, view: :parallel
expect(output).to be_html_safe
expect(output).to have_css "td:nth-child(1):not(.js-unfold-bottom).diff-line-num.unfold.js-unfold.old_line[data-linenumber='#{old_pos}']", text: '...'
expect(output).to have_css 'td:nth-child(2).line_content.match.parallel', text: text
expect(output).to have_css "td:nth-child(3):not(.js-unfold-bottom).diff-line-num.unfold.js-unfold.new_line[data-linenumber='#{new_pos}']", text: '...'
expect(output).to have_css 'td:nth-child(4).line_content.match.parallel', text: text
end
it "allows to generate only left match line for parallel view" do
output = diff_match_line old_pos, nil, text: text, view: :parallel
expect(output).to be_html_safe
expect(output).to have_css "td:nth-child(1):not(.js-unfold-bottom).diff-line-num.unfold.js-unfold.old_line[data-linenumber='#{old_pos}']", text: '...'
expect(output).to have_css 'td:nth-child(2).line_content.match.parallel', text: text
expect(output).not_to have_css 'td:nth-child(3)'
end
it "allows to generate only right match line for parallel view" do
output = diff_match_line nil, new_pos, text: text, view: :parallel
expect(output).to be_html_safe
expect(output).to have_css "td:nth-child(1):not(.js-unfold-bottom).diff-line-num.unfold.js-unfold.new_line[data-linenumber='#{new_pos}']", text: '...'
expect(output).to have_css 'td:nth-child(2).line_content.match.parallel', text: text
expect(output).not_to have_css 'td:nth-child(3)'
end
end
context 'viewer related' do
let(:viewer) { diff_file.simple_viewer }
before do
assign(:project, project)
end
describe '#diff_render_error_reason' do
context 'for error :too_large' do
before do
expect(viewer).to receive(:render_error).and_return(:too_large)
end
it 'returns an error message' do
expect(helper.diff_render_error_reason(viewer)).to eq('it is too large')
end
end
context 'for error :server_side_but_stored_externally' do
before do
expect(viewer).to receive(:render_error).and_return(:server_side_but_stored_externally)
expect(diff_file).to receive(:external_storage).and_return(:lfs)
end
it 'returns an error message' do
expect(helper.diff_render_error_reason(viewer)).to eq('it is stored in LFS')
end
end
end
describe '#diff_render_error_options' do
it 'includes a "view the blob" link' do
expect(helper.diff_render_error_options(viewer)).to include(/view the blob/)
end
end
end
end