wip

Author: hi-ogawa

packages/vitest/src/integrations/mock/timers.ts

@@ -17,6 +17,12 @@ import { mockDate, RealDate, resetDate } from './date'
 export class FakeTimers {
   private _global: typeof globalThis
   private _clock!: InstalledClock
+  // | _fakingDate | _fakingTime |
+  // +-------------+-------------+
+  // | false       | false       | initial
+  // | true        | false       | vi.setSystemTime called without vi.useFakeTimers
+  // | false       | true        | vi.useFakeTimers called
+  // | true        | true        | unreachable
   private _fakingTime: boolean
   private _fakingDate: boolean
   private _fakeTimers: FakeTimerWithContext
@@ -187,6 +193,10 @@ export class FakeTimers {
     }
   }
 
+  getMockedSystemTime(): number | null {
+    return this._fakingTime ? this._clock.now : null
+  }
+
   getRealSystemTime(): number {
     return this._now()
   }

packages/vitest/src/integrations/vi.ts

@@ -85,7 +85,7 @@ export interface VitestUtils {
    */
   setSystemTime: (time: number | string | Date) => VitestUtils
   /**
-   * Returns mocked current date that was set using `setSystemTime`. If date is not mocked the method will return `null`.
+   * Returns mocked current date. If date is not mocked the method will return `null`.
    */
   getMockedSystemTime: () => Date | null
   /**
@@ -508,8 +508,10 @@ function createVitest(): VitestUtils {
       return utils
     },
 
+    // TODO: probably we can return `number` to be consistent with `getRealSystemTime`
     getMockedSystemTime() {
-      return _mockedDate
+      const time = timers().getMockedSystemTime()
+      return time === null ? null : new Date(time)
     },
 
     getRealSystemTime() {