PHPLIB-494: Fix validation of options with default values

src/Client.php

@@ -95,7 +95,7 @@ class Client
     {
         $driverOptions += ['typeMap' => self::$defaultTypeMap];
 
-        if (isset($driverOptions['typeMap']) && ! is_array($driverOptions['typeMap'])) {
+        if (! is_array($driverOptions['typeMap'])) {
             throw InvalidArgumentException::invalidType('"typeMap" driver option', $driverOptions['typeMap'], 'array');
         }
 

src/GridFS/Bucket.php

@@ -143,19 +143,19 @@ class Bucket
             'disableMD5' => false,
         ];
 
-        if (isset($options['bucketName']) && ! is_string($options['bucketName'])) {
+        if (! is_string($options['bucketName'])) {
             throw InvalidArgumentException::invalidType('"bucketName" option', $options['bucketName'], 'string');
         }
 
-        if (isset($options['chunkSizeBytes']) && ! is_integer($options['chunkSizeBytes'])) {
+        if (! is_integer($options['chunkSizeBytes'])) {
             throw InvalidArgumentException::invalidType('"chunkSizeBytes" option', $options['chunkSizeBytes'], 'integer');
         }
 
-        if (isset($options['chunkSizeBytes']) && $options['chunkSizeBytes'] < 1) {
+        if ($options['chunkSizeBytes'] < 1) {
             throw new InvalidArgumentException(sprintf('Expected "chunkSizeBytes" option to be >= 1, %d given', $options['chunkSizeBytes']));
         }
 
-        if (isset($options['disableMD5']) && ! is_bool($options['disableMD5'])) {
+        if (! is_bool($options['disableMD5'])) {
             throw InvalidArgumentException::invalidType('"disableMD5" option', $options['disableMD5'], 'boolean');
         }
 

src/GridFS/WritableStream.php

@@ -114,15 +114,15 @@ class WritableStream
             throw InvalidArgumentException::invalidType('"aliases" option', $options['aliases'], 'array of strings');
         }
 
-        if (isset($options['chunkSizeBytes']) && ! is_integer($options['chunkSizeBytes'])) {
+        if (! is_integer($options['chunkSizeBytes'])) {
             throw InvalidArgumentException::invalidType('"chunkSizeBytes" option', $options['chunkSizeBytes'], 'integer');
         }
 
-        if (isset($options['chunkSizeBytes']) && $options['chunkSizeBytes'] < 1) {
+        if ($options['chunkSizeBytes'] < 1) {
             throw new InvalidArgumentException(sprintf('Expected "chunkSizeBytes" option to be >= 1, %d given', $options['chunkSizeBytes']));
         }
 
-        if (isset($options['disableMD5']) && ! is_bool($options['disableMD5'])) {
+        if (! is_bool($options['disableMD5'])) {
             throw InvalidArgumentException::invalidType('"disableMD5" option', $options['disableMD5'], 'boolean');
         }
 

src/Operation/Watch.php

@@ -178,10 +178,14 @@ class Watch implements Executable, /* @internal */ CommandSubscriber
             'readPreference' => new ReadPreference(ReadPreference::RP_PRIMARY),
         ];
 
-        if (isset($options['fullDocument']) && ! is_string($options['fullDocument'])) {
+        if (! is_string($options['fullDocument'])) {
             throw InvalidArgumentException::invalidType('"fullDocument" option', $options['fullDocument'], 'string');
         }
 
+        if (! $options['readPreference'] instanceof ReadPreference) {
+            throw InvalidArgumentException::invalidType('"readPreference" option', $options['readPreference'], ReadPreference::class);
+        }
+
         if (isset($options['resumeAfter']) && ! is_array($options['resumeAfter']) && ! is_object($options['resumeAfter'])) {
             throw InvalidArgumentException::invalidType('"resumeAfter" option', $options['resumeAfter'], 'array or object');
         }