1 files changed, 72 insertions, 0 deletions
diff --git a/spec/graphql/resolvers/board_resolver_spec.rb b/spec/graphql/resolvers/board_resolver_spec.rb
new file mode 100644
index 00000000000..c70c696005f
--- /dev/null
+++ b/spec/graphql/resolvers/board_resolver_spec.rb
@@ -0,0 +1,72 @@
+# frozen_string_literal: true
+
+require 'spec_helper'
+
+RSpec.describe Resolvers::BoardResolver do
+  include GraphqlHelpers
+
+  let_it_be(:user) { create(:user) }
+
+  let(:dummy_gid) { 'gid://gitlab/Board/1' }
+
+  shared_examples_for 'group and project boards resolver' do
+    it 'does not create a default board' do
+      expect(resolve_board(id: dummy_gid)).to eq nil
+    end
+
+    it 'calls Boards::ListService' do
+      expect_next_instance_of(Boards::ListService) do |service|
+        expect(service).to receive(:execute).and_return([])
+      end
+
+      resolve_board(id: dummy_gid)
+    end
+
+    it 'requires an ID' do
+      expect do
+        resolve(described_class, obj: board_parent, args: {}, ctx: { current_user: user })
+      end.to raise_error(Gitlab::Graphql::Errors::ArgumentError)
+    end
+
+    context 'when querying for a single board' do
+      let(:board1) { create(:board, name: 'One', resource_parent: board_parent) }
+
+      it 'returns specified board' do
+        expect(resolve_board(id: global_id_of(board1))).to eq board1
+      end
+
+      it 'returns nil if board not found' do
+        outside_parent = create(board_parent.class.underscore.to_sym) # rubocop:disable Rails/SaveBang
+        outside_board  = create(:board, name: 'outside board', resource_parent: outside_parent)
+
+        expect(resolve_board(id: global_id_of(outside_board))).to eq nil
+      end
+    end
+  end
+
+  describe '#resolve' do
+    context 'when there is no parent' do
+      let(:board_parent) { nil }
+
+      it 'returns nil if parent is nil' do
+        expect(resolve_board(id: dummy_gid)).to eq(nil)
+      end
+    end
+
+    context 'when project boards' do
+      let(:board_parent) { create(:project, :public, creator_id: user.id, namespace: user.namespace ) }
+
+      it_behaves_like 'group and project boards resolver'
+    end
+
+    context 'when group boards' do
+      let(:board_parent) { create(:group) }
+
+      it_behaves_like 'group and project boards resolver'
+    end
+  end
+
+  def resolve_board(id:)
+    resolve(described_class, obj: board_parent, args: { id: id }, ctx: { current_user: user })
+  end
+end