1 files changed, 70 insertions, 36 deletions

diff --git a/spec/helpers/diff_helper_spec.rb b/spec/helpers/diff_helper_spec.rb
index c2fd2c8a533..9c7c79f57c6 100644
--- a/spec/helpers/diff_helper_spec.rb
+++ b/spec/helpers/diff_helper_spec.rb
@@ -6,7 +6,7 @@ describe DiffHelper do
   let(:project) { create(:project) }
   let(:repository) { project.repository }
   let(:commit) { project.commit(sample_commit.id) }
-  let(:diffs) { commit.diffs }
+  let(:diffs) { commit.raw_diffs }
   let(:diff) { diffs.first }
   let(:diff_refs) { [commit.parent, commit] }
   let(:diff_file) { Gitlab::Diff::File.new(diff, diff_refs: diff_refs, repository: repository) }
@@ -15,74 +15,56 @@ describe DiffHelper do
     it 'returns a valid value when cookie is set' do
       helper.request.cookies[:diff_view] = 'parallel'
 
-      expect(helper.diff_view).to eq 'parallel'
+      expect(helper.diff_view).to eq :parallel
     end
 
     it 'returns a default value when cookie is invalid' do
       helper.request.cookies[:diff_view] = 'invalid'
 
-      expect(helper.diff_view).to eq 'inline'
+      expect(helper.diff_view).to eq :inline
     end
 
     it 'returns a default value when cookie is nil' do
       expect(helper.request.cookies).to be_empty
 
-      expect(helper.diff_view).to eq 'inline'
+      expect(helper.diff_view).to eq :inline
     end
   end
-  
-  describe 'diff_options' do
-    it 'should return hard limit for a diff if force diff is true' do
-      allow(controller).to receive(:params) { { force_show_diff: true } }
-      expect(diff_options).to include(Commit.max_diff_options)
-    end
-
-    it 'should return hard limit for a diff if expand_all_diffs is true' do
-      allow(controller).to receive(:params) { { expand_all_diffs: true } }
-      expect(diff_options).to include(Commit.max_diff_options)
-    end
 
-    it 'should return no collapse false' do
+  describe 'diff_options' do
+    it 'returns no collapse false' do
       expect(diff_options).to include(no_collapse: false)
     end
 
-    it 'should return no collapse true if expand_all_diffs' do
+    it 'returns no collapse true if expand_all_diffs' do
       allow(controller).to receive(:params) { { expand_all_diffs: true } }
       expect(diff_options).to include(no_collapse: true)
     end
 
-    it 'should return no collapse true if action name diff_for_path' do
+    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(no_collapse: true)
     end
-  end
-
-  describe 'unfold_bottom_class' do
-    it 'should return empty string when bottom line shouldnt be unfolded' do
-      expect(unfold_bottom_class(false)).to eq('')
-    end
-
-    it 'should return js class when bottom lines should be unfolded' do
-      expect(unfold_bottom_class(true)).to include('js-unfold-bottom')
-    end
-  end
 
-  describe 'unfold_class' do
-    it 'returns empty on false' do
-      expect(unfold_class(false)).to eq('')
+    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 a class on true' do
-      expect(unfold_class(true)).to eq('unfold js-unfold')
+    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
-    it 'should return non breaking space when line is empty' do
+    it 'returns non breaking space when line is empty' do
       expect(diff_line_content(nil)).to eq('  ')
     end
 
-    it 'should return the line itself' do
+    it 'returns the line itself' do
       expect(diff_line_content(diff_file.diff_lines.first.text)).
         to eq('@@ -6,12 +6,18 @@ module Popen')
       expect(diff_line_content(diff_file.diff_lines.first.type)).to eq('match')
@@ -103,4 +85,56 @@ describe DiffHelper do
       expect(marked_new_line).to be_html_safe
     end
   end
+
+  describe "#diff_match_line" do
+    let(:old_pos) { 40 }
+    let(:new_pos) { 50 }
+    let(:text) { 'some_text' }
+
+    it "should generate 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 "should allow 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 "should generate 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 "should allow 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 "should allow 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
 end