diff --git a/tests/Psl/Random/BytesTest.php b/tests/Psl/Random/BytesTest.php
index f0a409c..31600fb 100644
--- a/tests/Psl/Random/BytesTest.php
+++ b/tests/Psl/Random/BytesTest.php
@@ -18,6 +18,11 @@ class BytesTest extends TestCase
         self::assertSame(32, Str\Byte\length($random));
     }
 
+    public function testBytesEarlyReturnForZeroLength(): void
+    {
+        self::assertSame('', Random\bytes(0));
+    }
+
     public function testBytesThrowsForNegativeLength(): void
     {
         $this->expectException(Exception\InvariantViolationException::class);
diff --git a/tests/Psl/Random/StringTest.php b/tests/Psl/Random/StringTest.php
index df13ade..4bd4820 100644
--- a/tests/Psl/Random/StringTest.php
+++ b/tests/Psl/Random/StringTest.php
@@ -31,6 +31,11 @@ class StringTest extends TestCase
         }
     }
 
+    public function testStringEarlyReturnForZeroLength(): void
+    {
+        self::assertSame('', Random\string(0));
+    }
+
     public function testStringThrowsForNegativeLength(): void
     {
         $this->expectException(Exception\InvariantViolationException::class);