From c6e5eec85c2f3f032a8a020745f45a81d419b71b Mon Sep 17 00:00:00 2001
From: Patrik Oldsberg <poldsberg@gmail.com>
Date: Wed, 20 Sep 2023 15:06:39 +0200
Subject: [PATCH] backend-test-utils: initial tests for DirectoryMocker

Signed-off-by: Patrik Oldsberg <poldsberg@gmail.com>
---
 .../src/files/DirectoryMocker.test.ts         | 83 +++++++++++++++++++
 1 file changed, 83 insertions(+)
 create mode 100644 packages/backend-test-utils/src/files/DirectoryMocker.test.ts

diff --git a/packages/backend-test-utils/src/files/DirectoryMocker.test.ts b/packages/backend-test-utils/src/files/DirectoryMocker.test.ts
new file mode 100644
index 0000000000..cb0e52125c
--- /dev/null
+++ b/packages/backend-test-utils/src/files/DirectoryMocker.test.ts
@@ -0,0 +1,83 @@
+/*
+ * Copyright 2023 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 { DirectoryMocker } from './DirectoryMocker';
+
+describe('DirectoryMocker', () => {
+  const mocker = DirectoryMocker.create();
+
+  it('should populate a directory with text files', async () => {
+    await mocker.setContent({
+      'a.txt': 'a',
+      'a/b.txt': 'b',
+      'a/b/c.txt': 'c',
+      'a/b/d.txt': 'd',
+    });
+
+    await expect(mocker.getContent()).resolves.toEqual({
+      'a.txt': 'a',
+      a: {
+        'b.txt': 'b',
+        b: {
+          'c.txt': 'c',
+          'd.txt': 'd',
+        },
+      },
+    });
+  });
+
+  it('should mix text and binary files', async () => {
+    await mocker.setContent({
+      'a.txt': 'a',
+      'a/b.txt': 'b',
+      'a/b/c.bin': Buffer.from([0xc]),
+      'a/b/d.bin': Buffer.from([0xd]),
+    });
+
+    await expect(mocker.getContent()).resolves.toEqual({
+      'a.txt': 'a',
+      a: {
+        'b.txt': 'b',
+        b: {
+          'c.bin': Buffer.from([0xc]),
+          'd.bin': Buffer.from([0xd]),
+        },
+      },
+    });
+  });
+
+  describe('cleanup', () => {
+    let cleanupMocker: DirectoryMocker;
+
+    describe('inner', () => {
+      cleanupMocker = DirectoryMocker.create();
+
+      it('should populate a directory', async () => {
+        await cleanupMocker.setContent({
+          'a.txt': 'a',
+        });
+
+        await expect(cleanupMocker.getContent()).resolves.toEqual({
+          'a.txt': 'a',
+        });
+      });
+    });
+
+    it('should clean up after itself automatically', async () => {
+      await expect(cleanupMocker.getContent()).resolves.toBeUndefined();
+    });
+  });
+});