test: Make the min PHP version test compatibility more complete (#892)

fixtures/set039-min-php-version/composer.json

@@ -1,2 +1,8 @@
 {
+    "autoload": {
+        "files": ["src/greet.php"],
+        "psr-4": {
+            "App\\": "src"
+        }
+    }
 }

fixtures/set039-min-php-version/index.php

@@ -1,11 +1,7 @@
 <?php
 
-namespace App;
-
 require file_exists(__DIR__.'/vendor/scoper-autoload.php')
     ? __DIR__.'/vendor/scoper-autoload.php'
     : __DIR__.'/vendor/autoload.php';
 
-class Greeter {}
-
-echo "OK\n";
+greet();

fixtures/set039-min-php-version/scoper.inc.php

@@ -22,5 +22,7 @@
 );
 
 return [
+    'exclude-files' => ['index.php'],
     'expose-classes' => ['App\Greeter'],
+    'expose-functions' => ['greet'],
 ];

fixtures/set039-min-php-version/src/Greeter.php

@@ -0,0 +1,11 @@
+<?php
+
+namespace App;
+
+class Greeter
+{
+    function greet()
+    {
+        echo "OK\n";
+    }
+}

fixtures/set039-min-php-version/src/greet.php

@@ -0,0 +1,7 @@
+<?php
+
+use App\Greeter;
+
+function greet() {
+    (new Greeter())->greet();
+}