feat: adds fixture

src/Functions.php

@@ -278,3 +278,28 @@ if (! function_exists('mutates')) {
         }
     }
 }
+
+if (! function_exists('fixture')) {
+    /**
+     * Returns the absolute path to a fixture file.
+     */
+    function fixture(string $file): string
+    {
+        $file = implode(DIRECTORY_SEPARATOR, [
+            TestSuite::getInstance()->rootPath,
+            TestSuite::getInstance()->testPath,
+            'Fixtures',
+            str_replace(['/', '\\'], DIRECTORY_SEPARATOR, $file),
+        ]);
+
+        $fileRealPath = realpath($file);
+
+        if ($fileRealPath === false) {
+            throw new InvalidArgumentException(
+                'The fixture file ['.$file.'] does not exist.',
+            );
+        }
+
+        return $fileRealPath;
+    }
+}

src/Pest.php

@@ -6,7 +6,7 @@ namespace Pest;
 
 function version(): string
 {
-    return '4.0.0-alpha.2';
+    return '4.0.0-alpha.3';
 }
 
 function testDirectory(string $file = ''): string

tests/Features/Fixture.php

@@ -0,0 +1,11 @@
+<?php
+
+it('may return a file path', function () {
+    $file = fixture('phpunit-in-isolation.xml');
+
+    expect($file)->toBeString()
+        ->toBeFile();
+});
+
+it('may throw an exception if the file does not exist', function () {
+    fixture('file-that-does-not-exist.php');