Add unit test

x-pack/plugins/cases/public/client/attachment_framework/registry.test.ts

@@ -0,0 +1,86 @@
+/*
+ * Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one
+ * or more contributor license agreements. Licensed under the Elastic License
+ * 2.0; you may not use this file except in compliance with the Elastic License
+ * 2.0.
+ */
+
+import { AttachmentTypeRegistry } from './registry';
+
+export const ExpressionComponent: React.FunctionComponent = () => {
+  return null;
+};
+
+const getItem = (id: string = 'test') => {
+  return { id };
+};
+
+describe('AttachmentTypeRegistry', () => {
+  beforeEach(() => jest.resetAllMocks());
+
+  describe('has()', () => {
+    it('returns false for unregistered items', () => {
+      const registry = new AttachmentTypeRegistry();
+
+      expect(registry.has('test')).toEqual(false);
+    });
+
+    it('returns true after registering an item', () => {
+      const registry = new AttachmentTypeRegistry();
+      registry.register(getItem());
+
+      expect(registry.has('test'));
+    });
+  });
+
+  describe('register()', () => {
+    it('able to register items', () => {
+      const registry = new AttachmentTypeRegistry();
+      registry.register(getItem());
+
+      expect(registry.has('test')).toEqual(true);
+    });
+
+    it('throws error if item is already registered', () => {
+      const registry = new AttachmentTypeRegistry();
+      registry.register(getItem('test'));
+
+      expect(() => registry.register(getItem('test'))).toThrowErrorMatchingInlineSnapshot(
+        `"Attachment type \\"test\\" is already registered."`
+      );
+    });
+  });
+
+  describe('get()', () => {
+    it('returns item', () => {
+      const registry = new AttachmentTypeRegistry();
+      registry.register(getItem());
+      const actionType = registry.get('test');
+
+      expect(actionType).toEqual({
+        id: 'test',
+      });
+    });
+
+    it(`throw error when action type doesn't exist`, () => {
+      const registry = new AttachmentTypeRegistry();
+      expect(() => registry.get('not-exist-item')).toThrowErrorMatchingInlineSnapshot(
+        `"Attachment type \\"not-exist-item\\" is not registered."`
+      );
+    });
+  });
+
+  describe('list()', () => {
+    it('returns list of items', () => {
+      const actionTypeRegistry = new AttachmentTypeRegistry();
+      actionTypeRegistry.register(getItem());
+      const actionTypes = actionTypeRegistry.list();
+
+      expect(actionTypes).toEqual([
+        {
+          id: 'test',
+        },
+      ]);
+    });
+  });
+});