test: refactor all test directories into one

test/array-update/config.ts

@@ -0,0 +1,24 @@
+import { buildConfig } from '../buildConfig';
+
+export default buildConfig({
+  collections: [{
+    slug: 'arrays',
+    fields: [
+      {
+        name: 'array',
+        type: 'array',
+        fields: [
+          {
+            type: 'text',
+            name: 'required',
+            required: true,
+          },
+          {
+            type: 'text',
+            name: 'optional',
+          },
+        ],
+      },
+    ],
+  }],
+});