fixup! fixup! fs: aggregate errors in fsPromises to avoid error swallowing

Author: Linkgoron

test/parallel/test-fs-promises-file-handle-aggregate-errors.js

@@ -0,0 +1,72 @@
+'use strict';
+// Flags: --expose-internals
+
+const common = require('../common');
+const tmpdir = require('../common/tmpdir');
+
+// The following tests validate aggregate errors are thrown correctly
+// when both an operation and close throw.
+
+const fs = require('fs');
+const path = require('path');
+const {
+  readFile,
+  writeFile,
+  truncate,
+  lchmod,
+} = fs.promises;
+const {
+  FileHandle,
+} = require('internal/fs/promises');
+
+const assert = require('assert');
+const originalFd = Object.getOwnPropertyDescriptor(FileHandle.prototype, 'fd');
+
+let count = 0;
+async function createFile() {
+  const filePath = path.join(tmpdir.path, `aggregate_errors_${++count}.txt`);
+  await writeFile(filePath, 'content');
+  return filePath;
+}
+
+async function checkAggregateError(op) {
+  try {
+    const filePath = await createFile();
+    Object.defineProperty(FileHandle.prototype, 'fd', {
+      get: function() {
+        // Close is set by using a setter,
+        // so it needs to be set on the instance.
+        const originalClose = this.close;
+        this.close = async () => {
+          // close the file
+          await originalClose.call(this);
+          const closeError = new Error('CLOSE_ERROR');
+          closeError.code = 456;
+          throw closeError;
+        };
+        const opError = new Error('INTERNAL_ERROR');
+        opError.code = 123;
+        throw opError;
+      }
+    });
+
+    await op(filePath).catch(common.mustCall((err) => {
+      assert.strictEqual(err.constructor.name, 'AggregateError');
+      assert.strictEqual(err.code, 123);
+      assert.strictEqual(err.errors.length, 2);
+      assert.strictEqual(err.errors[0].message, 'INTERNAL_ERROR');
+      assert.strictEqual(err.errors[1].message, 'CLOSE_ERROR');
+    }));
+  } finally {
+    Object.defineProperty(FileHandle.prototype, 'fd', originalFd);
+  }
+}
+(async function() {
+  tmpdir.refresh();
+  await checkAggregateError((filePath) => truncate(filePath));
+  await checkAggregateError((filePath) => readFile(filePath));
+  await checkAggregateError((filePath) => writeFile(filePath, '123'));
+  if (common.isOSX) {
+    await checkAggregateError((filePath) => lchmod(filePath, 0o777));
+  }
+})().then(common.mustCall());