From d59ec5c6d5843201f53c02979d61d8966e862112 Mon Sep 17 00:00:00 2001
From: Patrik Oldsberg <poldsberg@gmail.com>
Date: Fri, 29 Apr 2022 16:46:17 +0200
Subject: [PATCH] scaffolder: add test for TemplateEditorBrowser

Signed-off-by: Patrik Oldsberg <poldsberg@gmail.com>
---
 .../TemplateEditorBrowser.test.tsx            | 55 +++++++++++++++++++
 1 file changed, 55 insertions(+)
 create mode 100644 plugins/scaffolder/src/components/TemplateEditorPage/TemplateEditorBrowser.test.tsx

diff --git a/plugins/scaffolder/src/components/TemplateEditorPage/TemplateEditorBrowser.test.tsx b/plugins/scaffolder/src/components/TemplateEditorPage/TemplateEditorBrowser.test.tsx
new file mode 100644
index 0000000000..cec311a5cd
--- /dev/null
+++ b/plugins/scaffolder/src/components/TemplateEditorPage/TemplateEditorBrowser.test.tsx
@@ -0,0 +1,55 @@
+/*
+ * Copyright 2022 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 { renderInTestApp } from '@backstage/test-utils';
+import { screen } from '@testing-library/react';
+import userEvent from '@testing-library/user-event';
+import React from 'react';
+import { MockFileSystemAccess } from '../../lib/filesystem/MockFileSystemAccess';
+import { DirectoryEditorProvider } from './DirectoryEditorContext';
+import { TemplateEditorBrowser } from './TemplateEditorBrowser';
+
+Blob.prototype.text = async function text() {
+  return new Promise(resolve => {
+    const reader = new FileReader();
+    reader.onload = () => resolve(reader.result as string);
+    reader.readAsText(this);
+  });
+};
+
+describe('TemplateEditorBrowser', () => {
+  it('should render files and expand dirs without exploding', async () => {
+    await renderInTestApp(
+      <DirectoryEditorProvider
+        directory={MockFileSystemAccess.createMockDirectory({
+          'foo.txt': 'le foo',
+          'dir/bar.txt': 'le bar',
+          'dir/baz.txt': 'le baz',
+        })}
+      >
+        <TemplateEditorBrowser />
+      </DirectoryEditorProvider>,
+    );
+
+    await expect(screen.findByText('foo.txt')).resolves.toBeInTheDocument();
+    expect(screen.getByText('dir')).toBeInTheDocument();
+    expect(screen.queryByText('bar.txt')).not.toBeInTheDocument();
+    expect(screen.queryByText('baz.txt')).not.toBeInTheDocument();
+
+    await userEvent.click(screen.getByText('dir'));
+    expect(screen.getByText('bar.txt')).toBeInTheDocument();
+    expect(screen.getByText('baz.txt')).toBeInTheDocument();
+  });
+});