Try to exclude the bad files.

phpunit.xml

@@ -0,0 +1,25 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<phpunit xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:noNamespaceSchemaLocation="https://schema.phpunit.de/10.5/phpunit.xsd"
+         bootstrap="vendor/autoload.php"
+         cacheDirectory=".phpunit.cache"
+         executionOrder="depends,defects"
+         requireCoverageMetadata="true"
+         beStrictAboutCoverageMetadata="true"
+         beStrictAboutOutputDuringTests="true"
+         failOnRisky="true"
+         failOnWarning="true">
+    <testsuites>
+        <testsuite name="default">
+            <directory>tests</directory>
+            <exclude>tests/ZipArchiverTest/TypicalArchive</exclude>
+            <exclude>tests/ZipArchiverTest/ComposerJsonArchive</exclude>
+        </testsuite>
+    </testsuites>
+
+    <source restrictDeprecations="true" restrictNotices="true" restrictWarnings="true">
+        <include>
+            <directory>src</directory>
+        </include>
+    </source>
+</phpunit>

tests/ZipArchiverTest/TypicalArchive/src/myFile.php

@@ -1,6 +1,4 @@
 <?php
 /**
  * Empty test file
- */
-
-class myFile {}
+ */

tests/ZipArchiverTest/TypicalArchive/src/myOtherFile.php

@@ -1,6 +1,4 @@
 <?php
 /**
  * Empty test file
- */
-
-class myOtherFile {}
+ */

tests/ZipArchiverTest/TypicalArchive/src/tests/myFileTest.php

@@ -1,5 +1,4 @@
 <?php
 /**
  * Empty file
- */
-class myFileTest {}
+ */

tests/ZipArchiverTest/TypicalArchive/src/tests/myOtherFileTest.php

@@ -1,6 +1,4 @@
 <?php
 /**
  * Empty file
- */
-
-class myOtherFileTest {}
+ */