Added path parameter to Commits API

Signed-off-by: Rémy Coutable <remy@rymai.me>

CHANGELOG.md

@@ -4,6 +4,7 @@ Please view this file on the master branch, on stable branches it's out of date.
   - Adds user project membership expired event to clarify why user was removed (Callum Dryden)
   - Trim leading and trailing whitespace on project_path (Linus Thiel)
   - Prevent award emoji via notes for issues/MRs authored by user (barthc)
+  - Adds an optional path parameter to the Commits API to filter commits by path (Luis HGO)
   - Fix HipChat notifications rendering (airatshigapov, eisnerd)
   - Add hover to trash icon in notes !7008 (blackst0ne)
   - Simpler arguments passed to named_route on toggle_award_url helper method

lib/api/commits.rb

@@ -19,6 +19,7 @@ module API
         optional :until,    type: String, desc: 'Only commits before or in this date will be returned'
         optional :page,     type: Integer, default: 0, desc: 'The page for pagination'
         optional :per_page, type: Integer, default: 20, desc: 'The number of results per page'
+        optional :path,     type: String, desc: 'The file path'
       end
       get ":id/repository/commits" do
         # TODO remove the next line for 9.0, use DateTime type in the params block
@@ -28,6 +29,7 @@ module API
         offset = params[:page] * params[:per_page]
 
         commits = user_project.repository.commits(ref,
+                                                  path: params[:path],
                                                   limit: params[:per_page],
                                                   offset: offset,
                                                   after: params[:since],

spec/requests/api/commits_spec.rb

@@ -72,6 +72,17 @@ describe API::API, api: true  do
         expect(json_response['message']).to include "\"since\" must be a timestamp in ISO 8601 format"
       end
     end
+
+    context "path optional parameter" do
+      it "returns project commits matching provided path parameter" do
+        path = 'files/ruby/popen.rb'
+
+        get api("/projects/#{project.id}/repository/commits?path=#{path}", user)
+
+        expect(json_response.size).to eq(3)
+        expect(json_response.first["id"]).to eq("570e7b2abdd848b95f2f578043fc23bd6f6fd24d")
+      end
+    end
   end
 
   describe "Create a commit with multiple files and actions" do