fix test failures

Author: heddn

src/VerifierException.php

@@ -9,7 +9,7 @@ class VerifierException extends \RuntimeException {
     public function __construct($message = '', array $failures = [], $code = 0, Throwable $previous = NULL)
     {
         parent::__construct($message, $code, $previous);
-        $this->failures = $verificationFailures;
+        $this->failures = $failures;
     }
 
     public function getVerificationFailures()

tests/SignifyTest.php

@@ -134,8 +134,14 @@ public function testChecksumFileCompromisedArchive()
         $public_key = file_get_contents(__DIR__ . '/fixtures/checksumlist.pub');
         $var = new Verifier($public_key);
         $this->expectException(VerifierException::class);
-        $this->expectExceptionMessage('File "payload-compromised.zip" does not pass checksum verification.');
-        $var->verifyChecksumFile(__DIR__ . '/fixtures/checksumlist-compromised.sig');
+        $this->expectExceptionMessage('Checksum list could not be verified.');
+        try {
+            $var->verifyChecksumFile(__DIR__ . '/fixtures/checksumlist-compromised.sig');
+        }
+        catch (VerifierException $exception) {
+            $this->assertEquals('File "payload-compromised.zip" does not pass checksum verification.', $exception->getVerificationFailures()[0]);
+            throw $exception;
+        }
     }
 
     /**
@@ -168,8 +174,14 @@ public function testChecksumListUnreadableFile()
         $var = new Verifier($public_key);
         $signed_checksumlist = file_get_contents(__DIR__ . '/fixtures/checksumlist.sig');
         $this->expectException(VerifierException::class);
-        $this->expectExceptionMessage('File "payload.zip" in the checksum list could not be read.');
-        $var->verifyChecksumList($signed_checksumlist, __DIR__ . '/intentionally wrong path');
+        $this->expectExceptionMessage('Checksum list could not be verified.');
+        try {
+            $var->verifyChecksumList($signed_checksumlist, __DIR__ . '/intentionally wrong path');
+        }
+        catch (VerifierException $exception) {
+            $this->assertEquals('File "payload.zip" in the checksum list could not be read.', $exception->getVerificationFailures()[0]);
+            throw $exception;
+        }
     }
 
     public function testDefaultGetNow()