1 files changed, 180 insertions, 0 deletions
diff --git a/spec/graphql/mutations/commits/create_spec.rb b/spec/graphql/mutations/commits/create_spec.rb
new file mode 100644
index 00000000000..bb0b8c577b0
--- /dev/null
+++ b/spec/graphql/mutations/commits/create_spec.rb
@@ -0,0 +1,180 @@
+# frozen_string_literal: true
+
+require 'spec_helper'
+
+RSpec.describe Mutations::Commits::Create do
+  subject(:mutation) { described_class.new(object: nil, context: context, field: nil) }
+
+  let_it_be(:project) { create(:project, :public, :repository) }
+  let_it_be(:user) { create(:user) }
+  let(:context) do
+    GraphQL::Query::Context.new(
+      query: OpenStruct.new(schema: nil),
+      values: { current_user: user },
+      object: nil
+    )
+  end
+
+  specify { expect(described_class).to require_graphql_authorizations(:push_code) }
+
+  describe '#resolve' do
+    subject { mutation.resolve(project_path: project.full_path, branch: branch, message: message, actions: actions) }
+
+    let(:branch) { 'master' }
+    let(:message) { 'Commit message' }
+    let(:actions) do
+      [
+        {
+          action: 'create',
+          file_path: 'NEW_FILE.md',
+          content: 'Hello'
+        }
+      ]
+    end
+
+    let(:mutated_commit) { subject[:commit] }
+
+    it 'raises an error if the resource is not accessible to the user' do
+      expect { subject }.to raise_error(Gitlab::Graphql::Errors::ResourceNotAvailable)
+    end
+
+    context 'when user does not have enough permissions' do
+      before do
+        project.add_guest(user)
+      end
+
+      it 'raises an error' do
+        expect { subject }.to raise_error(Gitlab::Graphql::Errors::ResourceNotAvailable)
+      end
+    end
+
+    context 'when user is a maintainer of a different project' do
+      before do
+        create(:project_empty_repo).add_maintainer(user)
+      end
+
+      it 'raises an error' do
+        expect { subject }.to raise_error(Gitlab::Graphql::Errors::ResourceNotAvailable)
+      end
+    end
+
+    context 'when the user can create a commit' do
+      let(:deltas) { mutated_commit.raw_deltas }
+
+      before_all do
+        project.add_developer(user)
+      end
+
+      context 'when service successfully creates a new commit' do
+        it 'returns a new commit' do
+          expect(mutated_commit).to have_attributes(message: message, project: project)
+          expect(subject[:errors]).to be_empty
+
+          expect_to_contain_deltas([
+            a_hash_including(a_mode: '0', b_mode: '100644', new_file: true, new_path: 'NEW_FILE.md')
+          ])
+        end
+      end
+
+      context 'when request has multiple actions' do
+        let(:actions) do
+          [
+            {
+              action: 'create',
+              file_path: 'foo/foobar',
+              content: 'some content'
+            },
+            {
+              action: 'delete',
+              file_path: 'README.md'
+            },
+            {
+              action: 'move',
+              file_path: "LICENSE.md",
+              previous_path: "LICENSE",
+              content: "some content"
+            },
+            {
+              action: 'update',
+              file_path: 'VERSION',
+              content: 'new content'
+            },
+            {
+              action: 'chmod',
+              file_path: 'CHANGELOG',
+              execute_filemode: true
+            }
+          ]
+        end
+
+        it 'returns a new commit' do
+          expect(mutated_commit).to have_attributes(message: message, project: project)
+          expect(subject[:errors]).to be_empty
+
+          expect_to_contain_deltas([
+            a_hash_including(a_mode: '0', b_mode: '100644', new_path: 'foo/foobar'),
+            a_hash_including(deleted_file: true, new_path: 'README.md'),
+            a_hash_including(deleted_file: true, new_path: 'LICENSE'),
+            a_hash_including(new_file: true, new_path: 'LICENSE.md'),
+            a_hash_including(new_file: false, new_path: 'VERSION'),
+            a_hash_including(a_mode: '100644', b_mode: '100755', new_path: 'CHANGELOG')
+          ])
+        end
+      end
+
+      context 'when actions are not defined' do
+        let(:actions) { [] }
+
+        it 'returns a new commit' do
+          expect(mutated_commit).to have_attributes(message: message, project: project)
+          expect(subject[:errors]).to be_empty
+
+          expect_to_contain_deltas([])
+        end
+      end
+
+      context 'when branch does not exist' do
+        let(:branch) { 'unknown' }
+
+        it 'returns errors' do
+          expect(mutated_commit).to be_nil
+          expect(subject[:errors]).to eq(['You can only create or edit files when you are on a branch'])
+        end
+      end
+
+      context 'when message is not set' do
+        let(:message) { nil }
+
+        it 'returns errors' do
+          expect(mutated_commit).to be_nil
+          expect(subject[:errors]).to eq(['3:UserCommitFiles: empty CommitMessage'])
+        end
+      end
+
+      context 'when actions are incorrect' do
+        let(:actions) { [{ action: 'unknown', file_path: 'test.md', content: '' }] }
+
+        it 'returns errors' do
+          expect(mutated_commit).to be_nil
+          expect(subject[:errors]).to eq(['Unknown action \'unknown\''])
+        end
+      end
+
+      context 'when branch is protected' do
+        before do
+          create(:protected_branch, project: project, name: branch)
+        end
+
+        it 'returns errors' do
+          expect(mutated_commit).to be_nil
+          expect(subject[:errors]).to eq(['You are not allowed to push into this branch'])
+        end
+      end
+    end
+  end
+
+  def expect_to_contain_deltas(expected_deltas)
+    expect(deltas.count).to eq(expected_deltas.count)
+    expect(deltas).to include(*expected_deltas)
+  end
+end