fix(build): Add writeBuildArtifact test.

packages/build/src/utils/files/writeBuildArtifact.test.js

@@ -0,0 +1,41 @@
+/*
+  Copyright 2020-2021 Lowdefy, Inc
+  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 fs from 'fs';
+import path from 'path';
+import createWriteBuildArtifact from './writeBuildArtifact';
+
+const outputDirectory = path.resolve(process.cwd(), 'src/test/fileSetter');
+
+test('writeFile', async () => {
+  const filePath = path.resolve(outputDirectory, 'writeFile.txt');
+  try {
+    fs.unlinkSync(filePath);
+  } catch (error) {
+    //pass
+  }
+  expect(fs.existsSync(filePath)).toBe(false);
+  const writeBuildArtifact = createWriteBuildArtifact({ outputDirectory });
+
+  await writeBuildArtifact({
+    filePath: 'writeFile.txt',
+    content: 'Test fileSetter file',
+  });
+  const res = fs.readFileSync(filePath, 'utf8');
+  expect(res).toEqual('Test fileSetter file');
+  try {
+    fs.unlinkSync(filePath);
+  } catch (error) {
+    //pass
+  }
+});