1 files changed, 53 insertions, 0 deletions
diff --git a/spec/lib/gitlab/import_export/base/object_builder_spec.rb b/spec/lib/gitlab/import_export/base/object_builder_spec.rb
new file mode 100644
index 00000000000..e5242ae0bfc
--- /dev/null
+++ b/spec/lib/gitlab/import_export/base/object_builder_spec.rb
@@ -0,0 +1,53 @@
+# frozen_string_literal: true
+
+require 'spec_helper'
+
+describe Gitlab::ImportExport::Base::ObjectBuilder do
+  let(:project) do
+    create(:project, :repository,
+           :builds_disabled,
+           :issues_disabled,
+           name: 'project',
+           path: 'project')
+  end
+  let(:klass) { Milestone }
+  let(:attributes) { { 'title' => 'Test Base::ObjectBuilder Milestone', 'project' => project } }
+
+  subject { described_class.build(klass, attributes) }
+
+  describe '#build' do
+    context 'when object exists' do
+      context 'when where_clauses are implemented' do
+        before do
+          allow_next_instance_of(described_class) do |object_builder|
+            allow(object_builder).to receive(:where_clauses).and_return([klass.arel_table['title'].eq(attributes['title'])])
+          end
+        end
+
+        let!(:milestone) { create(:milestone, title: attributes['title'], project: project) }
+
+        it 'finds existing object instead of creating one' do
+          expect(subject).to eq(milestone)
+        end
+      end
+
+      context 'when where_clauses are not implemented' do
+        it 'raises NotImplementedError' do
+          expect { subject }.to raise_error(NotImplementedError)
+        end
+      end
+    end
+
+    context 'when object does not exist' do
+      before do
+        allow_next_instance_of(described_class) do |object_builder|
+          allow(object_builder).to receive(:find_object).and_return(nil)
+        end
+      end
+
+      it 'creates new object' do
+        expect { subject }.to change { Milestone.count }.from(0).to(1)
+      end
+    end
+  end
+end