Workhorse to send raw diff and patch for commits

Prior to this change, this was done through unicorn. In theory this
could time out. Workhorse has been sending these raw patches and diffs
for a long time and is stable in doing so.

Added bonus is the fact that `Commit#to_patch` can be removed.

`Commit#to_diff` too, which closes
https://gitlab.com/gitlab-org/gitaly/issues/324

Closes https://gitlab.com/gitlab-org/gitaly/issues/1196

1 files changed, 5 insertions, 28 deletions

diff --git a/spec/controllers/projects/commit_controller_spec.rb b/spec/controllers/projects/commit_controller_spec.rb
index 694c64ae1ad..003fec8ac68 100644
--- a/spec/controllers/projects/commit_controller_spec.rb
+++ b/spec/controllers/projects/commit_controller_spec.rb
@@ -79,41 +79,18 @@ describe Projects::CommitController do
     end
 
     describe "as diff" do
-      include_examples "export as", :diff
-      let(:format) { :diff }
+      it "triggers workhorse to serve the request" do
+        go(id: commit.id, format: :diff)
 
-      it "should really only be a git diff" do
-        go(id: '66eceea0db202bb39c4e445e8ca28689645366c5', format: format)
-
-        expect(response.body).to start_with("diff --git")
-      end
-
-      it "is only be a git diff without whitespace changes" do
-        go(id: '66eceea0db202bb39c4e445e8ca28689645366c5', format: format, w: 1)
-
-        expect(response.body).to start_with("diff --git")
-
-        # without whitespace option, there are more than 2 diff_splits for other formats
-        diff_splits = assigns(:diffs).diff_files.first.diff.diff.split("\n")
-        expect(diff_splits.length).to be <= 2
+        expect(response.headers[Gitlab::Workhorse::SEND_DATA_HEADER]).to start_with("git-diff:")
       end
     end
 
     describe "as patch" do
-      include_examples "export as", :patch
-      let(:format) { :patch }
-      let(:commit2) { project.commit('498214de67004b1da3d820901307bed2a68a8ef6') }
-
-      it "is a git email patch" do
-        go(id: commit2.id, format: format)
-
-        expect(response.body).to start_with("From #{commit2.id}")
-      end
-
       it "contains a git diff" do
-        go(id: commit2.id, format: format)
+        go(id: commit.id, format: :patch)
 
-        expect(response.body).to match(/^diff --git/)
+        expect(response.headers[Gitlab::Workhorse::SEND_DATA_HEADER]).to start_with("git-format-patch:")
       end
     end