Fix flaky tests dependent on wrongly assume Date.now() accuracy

Author: wojtekmaj

src/every.spec.ts

@@ -43,7 +43,7 @@ describe('asyncEvery()', () => {
 
     const timeElapsed = timer.stop();
 
-    expect(timeElapsed).toBeGreaterThanOrEqual(delay);
+    expect(timeElapsed).toBeGreaterThanOrEqual(delay - 1);
     expect(timeElapsed).toBeLessThan(delay * 1.25);
   });
 

src/every_strict.spec.ts

@@ -52,7 +52,7 @@ describe('asyncEveryStrict()', () => {
 
     const timeElapsed = timer.stop();
 
-    expect(timeElapsed).toBeGreaterThanOrEqual(delay * 3);
+    expect(timeElapsed).toBeGreaterThanOrEqual(delay * 3 - 1);
     expect(timeElapsed).toBeLessThan(delay * 1.25 * 3);
   });
 

src/filter.spec.ts

@@ -31,7 +31,7 @@ describe('asyncFilter()', () => {
 
     const timeElapsed = timer.stop();
 
-    expect(timeElapsed).toBeGreaterThanOrEqual(delay);
+    expect(timeElapsed).toBeGreaterThanOrEqual(delay - 1);
     expect(timeElapsed).toBeLessThan(delay * 1.25);
   });
 

src/filter_strict.spec.ts

@@ -40,7 +40,7 @@ describe('asyncFilterStrict()', () => {
 
     const timeElapsed = timer.stop();
 
-    expect(timeElapsed).toBeGreaterThanOrEqual(delay * 3);
+    expect(timeElapsed).toBeGreaterThanOrEqual(delay * 3 - 1);
     expect(timeElapsed).toBeLessThan(delay * 1.25 * 3);
   });
 

src/find.spec.ts

@@ -35,7 +35,7 @@ describe('asyncFind()', () => {
 
     const timeElapsed = timer.stop();
 
-    expect(timeElapsed).toBeGreaterThanOrEqual(delay * 2);
+    expect(timeElapsed).toBeGreaterThanOrEqual(delay * 2 - 1);
     expect(timeElapsed).toBeLessThan(delay * 1.25 * 2);
   });
 

src/findIndex.spec.ts

@@ -35,7 +35,7 @@ describe('asyncFindIndex()', () => {
 
     const timeElapsed = timer.stop();
 
-    expect(timeElapsed).toBeGreaterThanOrEqual(delay * 2);
+    expect(timeElapsed).toBeGreaterThanOrEqual(delay * 2 - 1);
     expect(timeElapsed).toBeLessThan(delay * 1.25 * 2);
   });
 

src/forEach.spec.ts

@@ -38,7 +38,7 @@ describe('asyncForEach()', () => {
 
     const timeElapsed = timer.stop();
 
-    expect(timeElapsed).toBeGreaterThanOrEqual(delay);
+    expect(timeElapsed).toBeGreaterThanOrEqual(delay - 1);
     expect(timeElapsed).toBeLessThan(delay * 1.25);
   });
 

src/forEach_strict.spec.ts

@@ -42,7 +42,7 @@ describe('asyncForEachStrict()', () => {
 
     const timeElapsed = timer.stop();
 
-    expect(timeElapsed).toBeGreaterThanOrEqual(delay * 3);
+    expect(timeElapsed).toBeGreaterThanOrEqual(delay * 3 - 1);
     expect(timeElapsed).toBeLessThan(delay * 1.25 * 3);
   });
 

src/map.spec.ts

@@ -32,7 +32,7 @@ describe('asyncMap()', () => {
 
     const timeElapsed = timer.stop();
 
-    expect(timeElapsed).toBeGreaterThanOrEqual(delay);
+    expect(timeElapsed).toBeGreaterThanOrEqual(delay - 1);
     expect(timeElapsed).toBeLessThan(delay * 1.25);
   });
 

src/map_strict.spec.ts

@@ -40,7 +40,7 @@ describe('asyncMapStrict()', () => {
 
     const timeElapsed = timer.stop();
 
-    expect(timeElapsed).toBeGreaterThanOrEqual(delay * 3);
+    expect(timeElapsed).toBeGreaterThanOrEqual(delay * 3 - 1);
     expect(timeElapsed).toBeLessThan(delay * 1.25 * 3);
   });