Update tests

cypress/integration/rendering/erDiagram-v3.spec.js

@@ -677,4 +677,21 @@ ORDER ||--|{ LINE-ITEM : contains
       { logLevel: 1, look: 'handDrawn', htmlLabels: false }
     );
   });
+
+  it('should render a not-so-simple ER diagram using elk', () => {
+    imgSnapshotTest(
+      `
+    erDiagram
+        CUSTOMER }|..|{ DELIVERY-ADDRESS : has
+        CUSTOMER ||--o{ ORDER : places
+        CUSTOMER ||--o{ INVOICE : "liable for"
+        DELIVERY-ADDRESS ||--o{ ORDER : receives
+        INVOICE ||--|{ ORDER : covers
+        ORDER ||--|{ ORDER-ITEM : includes
+        PRODUCT-CATEGORY ||--|{ PRODUCT : contains
+        PRODUCT ||--o{ ORDER-ITEM : "ordered in"
+      `,
+      { logLevel: 1, layout: 'elk' }
+    );
+  });
 });