Maybe?

.gitignore

@@ -12,5 +12,4 @@ Build/*
 node_modules/
 vendor/
 /composer.lock
-/codeception.yml
 /tests/_craft/config/db.php

codeception.yml

@@ -0,0 +1,27 @@
+actor: Tester
+paths:
+    tests: tests
+    log: tests/_output
+    data: tests/_data
+    support: tests/_support
+    envs: tests/_envs
+settings:
+    bootstrap: _bootstrap.php
+    colors: true
+coverage:
+    enabled: true
+params:
+  env
+modules:
+  config:
+    Yii2:
+      configFile: 'tests/_craft/config/test.php'
+  enabled:
+    Db:
+      dsn: 'mysql:host=127.0.0.1;dbname=%TEST_DB_NAME%;'
+      user: '%TEST_DB_USER%'
+      password: '%TEST_DB_PASS%'
+      dump: 'tests/_data/dump.sql'
+      populate: true
+      cleanup: true
+      reconnect: true