From ee7b8b95a389a533b0bcc541463d249d244f9356 Mon Sep 17 00:00:00 2001
From: Tim Otten <totten@civicrm.org>
Date: Wed, 7 Sep 2022 17:40:44 -0700
Subject: [PATCH] ClassScanner - Fix guard for preboot cache scenario

I wanted to inspect how caches were getting setup during test-runs.  So I applied
this hack https://github.com/civicrm/civicrm-core/commit/02106e8693d13ced7a151834a4188ce8b16f6444
and then ran some tests, eg

```
CIVICRM_UF=UnitTests phpunit8 tests/phpunit/CRM/Case/WorkflowMessage/CaseActivityTest.php
```

You can see the change in the HitOrMiss report (displayed after the test).

Before
======

```
OK (3 tests, 38 assertions)
HitOrMiss: {
    "ClassScanner::cache(index) => Early usage": 13,
    "ClassScanner::cache(structure) => New arraycache": 1
}
```

After
=====

```
OK (3 tests, 38 assertions)
HitOrMiss: {
    "ClassScanner::cache(index) => create(...)": 1,
    "ClassScanner::cache(structure) => New arraycache": 2
}
```
---
 Civi/Core/ClassScanner.php | 1 +
 1 file changed, 1 insertion(+)

diff --git a/Civi/Core/ClassScanner.php b/Civi/Core/ClassScanner.php
index 5002786749..5b318d056b 100644
--- a/Civi/Core/ClassScanner.php
+++ b/Civi/Core/ClassScanner.php
@@ -227,6 +227,7 @@ class ClassScanner {
     if (!isset(static::$caches[$name])) {
       switch ($name) {
         case 'index':
+          global $_DB_DATAOBJECT;
           if (empty($_DB_DATAOBJECT['CONFIG'])) {
             // Atypical example: You have a test with a @dataProvider that relies on ClassScanner. Runs before bot.
             return new \CRM_Utils_Cache_ArrayCache([]);
-- 
2.25.1