From b4ab1ed42cfa5342b5be3749ed74a63e98939c03 Mon Sep 17 00:00:00 2001
From: MareStare <mare.stare.official@gmail.com>
Date: Tue, 4 Mar 2025 02:42:14 +0000
Subject: [PATCH] Add `mockRandom` utility for testing

---
 assets/test/mock-date-now.ts |  9 ---------
 assets/test/mock.ts          | 18 ++++++++++++++++++
 2 files changed, 18 insertions(+), 9 deletions(-)
 delete mode 100644 assets/test/mock-date-now.ts
 create mode 100644 assets/test/mock.ts

diff --git a/assets/test/mock-date-now.ts b/assets/test/mock-date-now.ts
deleted file mode 100644
index fb162766..00000000
--- a/assets/test/mock-date-now.ts
+++ /dev/null
@@ -1,9 +0,0 @@
-export function mockDateNow(initialDateNow: number): void {
-  beforeAll(() => {
-    vi.useFakeTimers().setSystemTime(initialDateNow);
-  });
-
-  afterAll(() => {
-    vi.useRealTimers();
-  });
-}
diff --git a/assets/test/mock.ts b/assets/test/mock.ts
new file mode 100644
index 00000000..a386efe0
--- /dev/null
+++ b/assets/test/mock.ts
@@ -0,0 +1,18 @@
+export function mockDateNow(initialDateNow: number): void {
+  beforeAll(() => {
+    vi.useFakeTimers().setSystemTime(initialDateNow);
+  });
+
+  afterAll(() => {
+    vi.useRealTimers();
+  });
+}
+
+/**
+ * Mocks `Math.random` to return a static value.
+ */
+export function mockRandom(staticValue = 0.5) {
+  const realRandom = Math.random;
+  beforeEach(() => (Math.random = () => staticValue));
+  afterEach(() => (Math.random = realRandom));
+}