@@ -170,7 +170,7 @@ The package tests are checked with [Infection](https://infection.github.io/) mut
 ./vendor/bin/infection
 ```
 
-## Static analysis
+### Static analysis
 
 The code is statically analyzed with [Psalm](https://psalm.dev/). To run static analysis:
 
 
@@ -43,6 +43,7 @@ public function testDecryptByPasswordShouldThrowExceptionForTamperedData(): void
         $data = 'known data';
         $key = 'secret';
 
+        $this->expectExceptionMessage('Failed to decrypt data.');
         $this->expectException(AuthenticationException::class);
 
         $encryptedData = $crypt->encryptByPassword($data, $key);
 
@@ -62,6 +62,7 @@ public function testDataTamperingIsDetected(): void
         $signedData = $mac->sign($data, $key);
         $signedData[strlen($signedData) - 1] = 'A';
 
+        $this->expectExceptionMessage('Data does not match signature.');
         $this->expectException(DataIsTamperedException::class);
         $mac->getMessage($signedData, $key);
     }
Original file line number	Diff line number	Diff line change
`@@ -62,6 +62,7 @@ public function testDataTamperingIsDetected(): void`
`62`	`62`	`$signedData = $mac->sign($data, $key);`
`63`	`63`	`$signedData[strlen($signedData) - 1] = 'A';`
`64`	`64`
	`65`	`+ $this->expectExceptionMessage('Data does not match signature.');`
`65`	`66`	`$this->expectException(DataIsTamperedException::class);`
`66`	`67`	`$mac->getMessage($signedData, $key);`
`67`	`68`	`}`