Fix compatibility issue with Octokit >= 8

lib/danger/request_sources/github/github.rb

@@ -349,8 +349,10 @@ def submit_inline_comments_for_kind!(kind, messages, diff_lines, danger_comments
 
           if matching_comments.empty?
             begin
+              # Since Octokit v8, the signature of create_pull_request_comment has been changed.
+              # See https://github.com/danger/danger/issues/1475 for detailed information.
               client.create_pull_request_comment(ci_source.repo_slug, ci_source.pull_request_id,
-                                                 body, head_ref, m.file, position)
+                                                 body, head_ref, m.file, (Octokit::MAJOR >= 8 ? m.line : position))
             rescue Octokit::UnprocessableEntity => e
               # Show more detail for UnprocessableEntity error
               message = [e, "body: #{body}", "head_ref: #{head_ref}", "filename: #{m.file}", "position: #{position}"].join("\n")

spec/lib/danger/request_sources/github_spec.rb

@@ -413,6 +413,42 @@
         allow(@g).to receive(:submit_pull_request_status!)
       end
 
+      context "with Octokit v7" do
+        it "passes relative line number in the diff hunk to client.create_pull_request_comment" do
+          stub_const("Octokit::MAJOR", 7)
+
+          allow(@g.client).to receive(:pull_request_comments).with("artsy/eigen", "800").and_return([])
+
+          allow(@g.client).to receive(:create_pull_request_comment)
+
+          expect(@g.client).to receive(:delete_comment).with("artsy/eigen", inline_issue_id_1).and_return({})
+          expect(@g.client).to receive(:delete_comment).with("artsy/eigen", inline_issue_id_2).and_return({})
+          expect(@g.client).to receive(:delete_comment).with("artsy/eigen", main_issue_id).and_return({})
+
+          v = Danger::Violation.new("Sure thing", true, "Rakefile", 34)
+          @g.update_pull_request!(warnings: [], errors: [], messages: [v])
+          expect(@g.client).to have_received(:create_pull_request_comment).with("artsy/eigen", "800", anything, "561827e46167077b5e53515b4b7349b8ae04610b", "Rakefile", 7)
+        end
+      end
+
+      context "with Octokit v8" do
+        it "passes absolute line number in the file to client.create_pull_request_comment" do
+          stub_const("Octokit::MAJOR", 8)
+
+          allow(@g.client).to receive(:pull_request_comments).with("artsy/eigen", "800").and_return([])
+
+          allow(@g.client).to receive(:create_pull_request_comment)
+
+          expect(@g.client).to receive(:delete_comment).with("artsy/eigen", inline_issue_id_1).and_return({})
+          expect(@g.client).to receive(:delete_comment).with("artsy/eigen", inline_issue_id_2).and_return({})
+          expect(@g.client).to receive(:delete_comment).with("artsy/eigen", main_issue_id).and_return({})
+
+          v = Danger::Violation.new("Sure thing", true, "Rakefile", 34)
+          @g.update_pull_request!(warnings: [], errors: [], messages: [v])
+          expect(@g.client).to have_received(:create_pull_request_comment).with("artsy/eigen", "800", anything, "561827e46167077b5e53515b4b7349b8ae04610b", "Rakefile", 34)
+        end
+      end
+
       it "deletes all inline comments if there are no violations at all" do
         allow(@g.client).to receive(:pull_request_comments).with("artsy/eigen", "800").and_return([])