test: add test coverage for timestamp exception

ramsey · Oct 23, 2022 · 06aa2dd · 06aa2dd
1 parent bcfb209
commit 06aa2dd
Showing 1 changed file with 8 additions and 0 deletions.
diff --git a/tests/unit/Ulid/DefaultUlidFactoryTest.php b/tests/unit/Ulid/DefaultUlidFactoryTest.php
@@ -320,4 +320,12 @@ public function testCreateEachUlidFromSameDateTimeIsMonotonicallyIncreasing(): v
             $previous = $ulid;
         }
     }
+
+    public function testCreateFromDateThrowsExceptionForTooEarlyTimestamp(): void
+    {
+        $this->expectException(InvalidArgument::class);
+        $this->expectExceptionMessage('Timestamp may not be earlier than the Unix Epoch');
+
+        $this->factory->createFromDateTime(new DateTimeImmutable('1969-12-31 23:59:59.999999'));
+    }
 }