fix notices in tests

phpunit.xml

@@ -10,6 +10,8 @@
          beStrictAboutOutputDuringTests="true"
          displayDetailsOnPhpunitDeprecations="true"
          failOnPhpunitDeprecation="true"
+         displayDetailsOnTestsThatTriggerNotices="true"
+         displayDetailsOnTestsThatTriggerDeprecations="true"
          failOnRisky="true"
          failOnWarning="true">
     <testsuites>

src/Psr7/Stream/Stream.php

@@ -172,7 +172,7 @@ public function write(string $string): int
         if (!$this->isWritable()) {
             throw new RuntimeException("Stream is not writable");
         }
-        $result = fwrite($this->resource, $string);
+        $result = @fwrite($this->resource, $string);
         if ($result === false) {
             throw new RuntimeException("Failed to write to stream");
         }
@@ -198,7 +198,7 @@ public function read(int $length): string
         if ($length <= 0) {
             return "";
         }
-        $result = fread($this->resource, $length);
+        $result = @fread($this->resource, $length);
         if ($result === false) {
             throw new RuntimeException("Failed to read from stream");
         }

src/Psr7/Uri.php

@@ -139,7 +139,7 @@ protected function setUserInfo(string $user, ?string $password): void
         }
 
         $this->user = $this->encode($user, $pattern);
-        if ($password === null && strlen($password) === 0) {
+        if ($password === null || strlen($password) === 0) {
             $this->password = null;
             return;
         }
@@ -330,7 +330,7 @@ public function withUserInfo(string $user, ?string $password = null): UriInterfa
             return $this;
         }
 
-        if (strlen($password) === 0) {
+        if ($password === null || strlen($password) === 0) {
             $password = null;
         }