Extract ExceptionTestTrait.

Author: donquixote

tests/src/ExceptionTestTrait.php

@@ -0,0 +1,27 @@
+<?php
+
+declare(strict_types = 1);
+
+namespace Ock\ClassFilesIterator\Tests;
+
+trait ExceptionTestTrait {
+
+  /**
+   * @param class-string $exception_class
+   * @param callable(): (void|mixed) $callback
+   */
+  protected function callAndAssertException(string $exception_class, callable $callback): void {
+    // Does not work with non-existing class.
+    try {
+      $callback();
+      $this->fail("Expected exception was not thrown.");
+    }
+    catch (\Throwable $e) {
+      if (get_class($e) !== $exception_class) {
+        throw $e;
+      }
+      $this->addToAssertionCount(1);
+    }
+  }
+
+}

tests/src/NamespaceDirectoryTest.php

@@ -10,6 +10,7 @@
 
 class NamespaceDirectoryTest extends TestCase {
 
+  use ExceptionTestTrait;
   use ImmutableObjectsTrait;
 
   public function testCreate(): void {
@@ -488,24 +489,6 @@ protected function assertNamespaceDir(
     $this->assertSame($namespace, $namespace_directory->getNamespace());
   }
 
-  /**
-   * @param class-string $exception_class
-   * @param callable(): (void|mixed) $callback
-   */
-  protected function callAndAssertException(string $exception_class, callable $callback): void {
-    // Does not work with non-existing class.
-    try {
-      $callback();
-      $this->fail("Expected exception was not thrown.");
-    }
-    catch (\Throwable $e) {
-      if (get_class($e) !== $exception_class) {
-        throw $e;
-      }
-      $this->addToAssertionCount(1);
-    }
-  }
-
   /**
    * @param string $directory
    * @param string $namespace