Changed async timer tests to round up to the nearest millisecond.

Author: Bilge

test/Unit/AsyncExponentialBackoffExceptionHandlerTest.php

@@ -23,6 +23,6 @@ public function test()
             }
         });
 
-        self::assertGreaterThan($start + 1.5, microtime(true));
+        self::assertGreaterThan($start + 1.499, microtime(true));
     }
 }

test/Unit/AsyncMilliSleepExceptionHandlerTest.php

@@ -21,7 +21,7 @@ public function testValue()
             yield $handler();
         });
 
-        self::assertGreaterThan($start + 1, microtime(true));
+        self::assertGreaterThan($start + .999, microtime(true));
     }
 
     public function testSeries()
@@ -38,6 +38,6 @@ public function testSeries()
             }
         });
 
-        self::assertGreaterThan($start + 1, microtime(true));
+        self::assertGreaterThan($start + .999, microtime(true));
     }
 }