1 files changed, 129 insertions, 0 deletions
diff --git a/spec/lib/gitlab/gitaly_client/commit_service_spec.rb b/spec/lib/gitlab/gitaly_client/commit_service_spec.rb
new file mode 100644
index 00000000000..7fe698fcb18
--- /dev/null
+++ b/spec/lib/gitlab/gitaly_client/commit_service_spec.rb
@@ -0,0 +1,129 @@
+require 'spec_helper'
+
+describe Gitlab::GitalyClient::CommitService do
+  let(:project) { create(:project, :repository) }
+  let(:storage_name) { project.repository_storage }
+  let(:relative_path) { project.disk_path + '.git' }
+  let(:repository) { project.repository }
+  let(:repository_message) { repository.gitaly_repository }
+  let(:revision) { '913c66a37b4a45b9769037c55c2d238bd0942d2e' }
+  let(:commit) { project.commit(revision) }
+  let(:client) { described_class.new(repository) }
+
+  describe '#diff_from_parent' do
+    context 'when a commit has a parent' do
+      it 'sends an RPC request with the parent ID as left commit' do
+        request = Gitaly::CommitDiffRequest.new(
+          repository: repository_message,
+          left_commit_id: 'cfe32cf61b73a0d5e9f13e774abde7ff789b1660',
+          right_commit_id: commit.id,
+          collapse_diffs: true,
+          enforce_limits: true,
+          **Gitlab::Git::DiffCollection.collection_limits.to_h
+        )
+
+        expect_any_instance_of(Gitaly::DiffService::Stub).to receive(:commit_diff).with(request, kind_of(Hash))
+
+        client.diff_from_parent(commit)
+      end
+    end
+
+    context 'when a commit does not have a parent' do
+      it 'sends an RPC request with empty tree ref as left commit' do
+        initial_commit = project.commit('1a0b36b3cdad1d2ee32457c102a8c0b7056fa863').raw
+        request        = Gitaly::CommitDiffRequest.new(
+          repository: repository_message,
+          left_commit_id: '4b825dc642cb6eb9a060e54bf8d69288fbee4904',
+          right_commit_id: initial_commit.id,
+          collapse_diffs: true,
+          enforce_limits: true,
+          **Gitlab::Git::DiffCollection.collection_limits.to_h
+        )
+
+        expect_any_instance_of(Gitaly::DiffService::Stub).to receive(:commit_diff).with(request, kind_of(Hash))
+
+        client.diff_from_parent(initial_commit)
+      end
+    end
+
+    it 'returns a Gitlab::GitalyClient::DiffStitcher' do
+      ret = client.diff_from_parent(commit)
+
+      expect(ret).to be_kind_of(Gitlab::GitalyClient::DiffStitcher)
+    end
+  end
+
+  describe '#commit_deltas' do
+    context 'when a commit has a parent' do
+      it 'sends an RPC request with the parent ID as left commit' do
+        request = Gitaly::CommitDeltaRequest.new(
+          repository: repository_message,
+          left_commit_id: 'cfe32cf61b73a0d5e9f13e774abde7ff789b1660',
+          right_commit_id: commit.id
+        )
+
+        expect_any_instance_of(Gitaly::DiffService::Stub).to receive(:commit_delta).with(request, kind_of(Hash)).and_return([])
+
+        client.commit_deltas(commit)
+      end
+    end
+
+    context 'when a commit does not have a parent' do
+      it 'sends an RPC request with empty tree ref as left commit' do
+        initial_commit = project.commit('1a0b36b3cdad1d2ee32457c102a8c0b7056fa863')
+        request        = Gitaly::CommitDeltaRequest.new(
+          repository: repository_message,
+          left_commit_id: '4b825dc642cb6eb9a060e54bf8d69288fbee4904',
+          right_commit_id: initial_commit.id
+        )
+
+        expect_any_instance_of(Gitaly::DiffService::Stub).to receive(:commit_delta).with(request, kind_of(Hash)).and_return([])
+
+        client.commit_deltas(initial_commit)
+      end
+    end
+  end
+
+  describe '#between' do
+    let(:from) { 'master' }
+    let(:to) { '4b825dc642cb6eb9a060e54bf8d69288fbee4904' }
+
+    it 'sends an RPC request' do
+      request = Gitaly::CommitsBetweenRequest.new(
+        repository: repository_message, from: from, to: to
+      )
+
+      expect_any_instance_of(Gitaly::CommitService::Stub).to receive(:commits_between)
+        .with(request, kind_of(Hash)).and_return([])
+
+      described_class.new(repository).between(from, to)
+    end
+  end
+
+  describe '#tree_entries' do
+    let(:path) { '/' }
+
+    it 'sends a get_tree_entries message' do
+      expect_any_instance_of(Gitaly::CommitService::Stub)
+        .to receive(:get_tree_entries)
+        .with(gitaly_request_with_path(storage_name, relative_path), kind_of(Hash))
+        .and_return([])
+
+      client.tree_entries(repository, revision, path)
+    end
+  end
+
+  describe '#find_commit' do
+    let(:revision) { '4b825dc642cb6eb9a060e54bf8d69288fbee4904' }
+    it 'sends an RPC request' do
+      request = Gitaly::FindCommitRequest.new(
+        repository: repository_message, revision: revision
+      )
+
+      expect_any_instance_of(Gitaly::CommitService::Stub).to receive(:find_commit)
+        .with(request, kind_of(Hash)).and_return(double(commit: nil))
+
+      described_class.new(repository).find_commit(revision)
+    end
+  end
+end