Add test

cypress/integration/other/configuration.spec.js

@@ -127,8 +127,9 @@ describe('Configuration', () => {
     });
   });
 
+  describe('suppressErrorRendering', () => {
     it('should not render error diagram if suppressErrorRendering is set', () => {
-    const url = 'http://localhost:9000/regression/issue-1874.html';
+      const url = 'http://localhost:9000/suppressError.html?suppressErrorRendering=true';
       cy.viewport(1440, 1024);
       cy.visit(url);
       cy.get('#test');
@@ -136,4 +137,15 @@ describe('Configuration', () => {
         'configuration.spec-should-not-render-error-diagram-if-suppressErrorRendering-is-set'
       );
     });
+
+    it('should render error diagram if suppressErrorRendering is not set', () => {
+      const url = 'http://localhost:9000/suppressError.html';
+      cy.viewport(1440, 1024);
+      cy.visit(url);
+      cy.get('#test');
+      cy.matchImageSnapshot(
+        'configuration.spec-should-render-error-diagram-if-suppressErrorRendering-is-not-set'
+      );
+    });
+  });
 });

cypress/platform/suppressError.html

@@ -20,13 +20,15 @@
       >
       <pre class="mermaid">
   flowchart
-      a[This should be visible, error diagram should not be visible above this]
+      a[This should be visible]
     </pre
       >
     </div>
     <script type="module">
       import mermaid from './mermaid.esm.mjs';
-      mermaid.initialize({ startOnLoad: true, suppressErrorRendering: true });
+      const shouldSuppress =
+        new URLSearchParams(window.location.search).get('suppressErrorRendering') === 'true';
+      mermaid.initialize({ startOnLoad: true, suppressErrorRendering: shouldSuppress });
     </script>
   </body>
 </html>