1 files changed, 34 insertions, 0 deletions

diff --git a/packages/test-utils/src/fake.ts b/packages/test-utils/src/fake.ts
new file mode 100644
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+++ b/packages/test-utils/src/fake.ts
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+/*
+ * Copyright (C)  2022 Kristóf Marussy <kristof@marussy.com>
+ *
+ * This file is part of Sophie.
+ *
+ * Sophie is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, version 3.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ *
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
+import type { PartialDeep } from 'type-fest';
+
+/**
+ * Creates a fake object with some properties possibly missing.
+ *
+ * Interacting with missing properties will cause a test failure due to
+ * trying to access members of `undefined.`
+ *
+ * @param partialImplementation The partial fake implementation.
+ * @returns The same value as `partialImplementation` but with a casted type.
+ */
+export default function fake<T>(partialImplementation: PartialDeep<T>): T {
+  return partialImplementation as T;
+}