From 286466a90ae4dc42b5e94b91124d2f09a6e464cc Mon Sep 17 00:00:00 2001
From: Tim Hansen <timbonicus@gmail.com>
Date: Thu, 19 Aug 2021 21:07:57 -0600
Subject: [PATCH] useEntityKinds test

Signed-off-by: Tim Hansen <timbonicus@gmail.com>
---
 .../src/hooks/useEntityKinds.test.tsx         | 90 +++++++++++++++++++
 .../CatalogPage/CatalogKindHeader.test.tsx    |  2 +-
 2 files changed, 91 insertions(+), 1 deletion(-)
 create mode 100644 plugins/catalog-react/src/hooks/useEntityKinds.test.tsx

diff --git a/plugins/catalog-react/src/hooks/useEntityKinds.test.tsx b/plugins/catalog-react/src/hooks/useEntityKinds.test.tsx
new file mode 100644
index 0000000000..a1e1463174
--- /dev/null
+++ b/plugins/catalog-react/src/hooks/useEntityKinds.test.tsx
@@ -0,0 +1,90 @@
+/*
+ * Copyright 2021 The Backstage Authors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+import React, { PropsWithChildren } from 'react';
+import { ApiProvider, ApiRegistry } from '@backstage/core-app-api';
+import { CatalogApi } from '@backstage/catalog-client';
+import { Entity } from '@backstage/catalog-model';
+import { catalogApiRef } from '../api';
+import { renderHook } from '@testing-library/react-hooks';
+import { useEntityKinds } from './useEntityKinds';
+
+const entities: Entity[] = [
+  {
+    apiVersion: '1',
+    kind: 'Component',
+    metadata: {
+      name: 'component-1',
+    },
+  },
+  {
+    apiVersion: '1',
+    kind: 'Component',
+    metadata: {
+      name: 'component-2',
+    },
+  },
+  {
+    apiVersion: '1',
+    kind: 'Template',
+    metadata: {
+      name: 'template',
+    },
+  },
+  {
+    apiVersion: '1',
+    kind: 'System',
+    metadata: {
+      name: 'system',
+    },
+  },
+];
+
+const mockCatalogApi: Partial<CatalogApi> = {
+  getEntities: jest.fn().mockImplementation(async () => ({ items: entities })),
+};
+
+const wrapper = ({ children }: PropsWithChildren<{}>) => {
+  return (
+    <ApiProvider apis={ApiRegistry.from([[catalogApiRef, mockCatalogApi]])}>
+      {children}
+    </ApiProvider>
+  );
+};
+
+describe('useEntityKinds', () => {
+  it('does not return duplicate kinds', async () => {
+    const { result, waitForValueToChange } = renderHook(
+      () => useEntityKinds(),
+      {
+        wrapper,
+      },
+    );
+    await waitForValueToChange(() => result.current);
+    expect(result.current.length).toBe(3);
+  });
+
+  it('sorts entity kinds', async () => {
+    const { result, waitForValueToChange } = renderHook(
+      () => useEntityKinds(),
+      {
+        wrapper,
+      },
+    );
+    await waitForValueToChange(() => result.current);
+    expect(result.current).toEqual(['Component', 'System', 'Template']);
+  });
+});
diff --git a/plugins/catalog/src/components/CatalogPage/CatalogKindHeader.test.tsx b/plugins/catalog/src/components/CatalogPage/CatalogKindHeader.test.tsx
index 95c056cf6b..b39ad08359 100644
--- a/plugins/catalog/src/components/CatalogPage/CatalogKindHeader.test.tsx
+++ b/plugins/catalog/src/components/CatalogPage/CatalogKindHeader.test.tsx
@@ -65,7 +65,7 @@ const apis = ApiRegistry.from([
       getEntities: jest
         .fn()
         .mockImplementation(() => Promise.resolve({ items: entities })),
-    } as unknown as CatalogApi,
+    } as Partial<CatalogApi>,
   ],
 ]);