test: case with real timer

vitonsky · Aug 3, 2024 · dda80f9 · dda80f9
1 parent 0bcfdcd
commit dda80f9
Showing 1 changed file with 16 additions and 0 deletions.
diff --git a/src/Estimate.test.ts b/src/Estimate.test.ts
@@ -125,3 +125,19 @@ describe('basic usage', () => {
 		);
 	});
 });
+
+describe('cases with real timer', () => {
+	test('100 steps to complete', () => {
+		const estimate = new Estimate({ timeFetcher: () => performance.now() });
+
+		for (
+			let state = { progress: 1, total: 100 };
+			state.progress <= state.total;
+			state.progress += 1
+		) {
+			const measures = estimate.update(state.progress, state.total);
+			expect(measures.speed).toBeGreaterThan(1000);
+			expect(measures.averageTime).toBeLessThan(0.5);
+		}
+	});
+});