test: add missing tests/utils/AsyncLock.test.ts file

Signed-off-by: Jérôme Benoit <jerome.benoit@piment-noir.org>

src/utils/AsyncLock.ts

@@ -51,10 +51,8 @@ export class AsyncLock {
       asyncLock.acquired = false
       return
     }
-    // eslint-disable-next-line @typescript-eslint/no-non-null-assertion
-    const queuedResolve = asyncLock.resolveQueue.dequeue()!
     await new Promise<void>(resolve => {
-      queuedResolve()
+      asyncLock.resolveQueue.dequeue()
       resolve()
     })
   }

tests/utils/AsyncLock.test.ts

@@ -0,0 +1,42 @@
+import { describe, it } from 'node:test'
+
+import { expect } from 'expect'
+
+import { AsyncLock, AsyncLockType } from '../../src/utils/AsyncLock.js'
+
+await describe('AsyncLock test suite', async () => {
+  await it('Verify runExclusive()', () => {
+    const runs = 10
+    let executed: number[] = []
+    let count = 0
+    const fn = () => {
+      executed.push(++count)
+    }
+    for (let i = 0; i < runs; i++) {
+      AsyncLock.runExclusive(AsyncLockType.configuration, fn)
+        .then(() => {
+          expect(executed).toEqual(new Array(count).fill(0).map((_, i) => ++i))
+          return undefined
+        })
+        // eslint-disable-next-line @typescript-eslint/use-unknown-in-catch-callback-variable
+        .catch(console.error)
+    }
+    executed = []
+    count = 0
+    const asyncFn = async () => {
+      await new Promise(resolve => {
+        setTimeout(resolve, 100)
+      })
+      executed.push(++count)
+    }
+    for (let i = 0; i < runs; i++) {
+      AsyncLock.runExclusive(AsyncLockType.configuration, asyncFn)
+        .then(() => {
+          expect(executed).toEqual(new Array(count).fill(0).map((_, i) => ++i))
+          return undefined
+        })
+        // eslint-disable-next-line @typescript-eslint/use-unknown-in-catch-callback-variable
+        .catch(console.error)
+    }
+  })
+})