php 7.1 - 8.0 compatible version

issue #78

tests/Polyfill/LegacyTestCase.php

@@ -0,0 +1,18 @@
+<?php
+
+declare(strict_types=1);
+
+namespace PhpZip\Tests\Polyfill;
+
+use PHPUnit\Framework\TestCase;
+
+/**
+ * @internal
+ *
+ * @small
+ */
+class LegacyTestCase extends TestCase
+{
+    use PhpUnit8CompatTrait;
+    use PhpUnit9CompatTrait;
+}

tests/Polyfill/PhpUnit8CompatTrait.php

@@ -0,0 +1,22 @@
+<?php
+
+namespace PhpZip\Tests\Polyfill;
+
+use PHPUnit\Runner\Version;
+
+trait PhpUnit8CompatTrait
+{
+    /**
+     * @param string $regularExpression
+     */
+    public function expectExceptionMessageMatches(string $regularExpression): void
+    {
+        if (version_compare(Version::id(), '8.0.0', '<')) {
+            $this->expectExceptionMessageRegExp($regularExpression);
+
+            return;
+        }
+
+        parent::expectExceptionMessageMatches($regularExpression);
+    }
+}

tests/Polyfill/PhpUnit9CompatTrait.php

@@ -0,0 +1,53 @@
+<?php
+
+declare(strict_types=1);
+
+namespace PhpZip\Tests\Polyfill;
+
+use PHPUnit\Framework\ExpectationFailedException;
+use PHPUnit\Runner\Version;
+use SebastianBergmann\RecursionContext\InvalidArgumentException;
+
+trait PhpUnit9CompatTrait
+{
+    /**
+     * Asserts that a file does not exist.
+     *
+     * @param string $filename
+     * @param string $message
+     *
+     * @throws InvalidArgumentException
+     * @throws ExpectationFailedException
+     *
+     * @noinspection PhpDeprecationInspection
+     */
+    public static function assertFileDoesNotExist(string $filename, string $message = ''): void
+    {
+        if (version_compare(Version::id(), '9.1.0', '<')) {
+            static::assertFileNotExists($filename, $message);
+
+            return;
+        }
+
+        parent::assertFileDoesNotExist($filename, $message);
+    }
+
+    /**
+     * Asserts that a directory does not exist.
+     *
+     * @throws ExpectationFailedException
+     * @throws InvalidArgumentException
+     *
+     * @noinspection PhpDeprecationInspection
+     */
+    public static function assertDirectoryDoesNotExist(string $directory, string $message = ''): void
+    {
+        if (version_compare(Version::id(), '9.1.0', '<')) {
+            static::assertDirectoryNotExists($directory, $message);
+
+            return;
+        }
+
+        parent::assertDirectoryDoesNotExist($directory, $message);
+    }
+}