Fix: No Validation on Empty Metadata (coscine/issues#2417)

src/FormGenerator.spec.ts

@@ -10,6 +10,7 @@ import FormGenerator from '@/FormGenerator.vue';
 import { listApplicationProfile } from '@/data/example/applicationProfile';
 import { listFixedValues } from '@/data/example/fixedValues';
 import { listMetadata } from '@/data/example/metadata';
+import factory from 'rdf-ext';
 
 function sleep(ms: number) {
   return new Promise((resolve) => setTimeout(resolve, ms));
@@ -138,4 +139,43 @@ describe('FormGenerator.vue', () => {
       'Banana'
     );
   });
+
+  /* Checks for correct functionality of empty metadatasets */
+  test('listWithEmptyMetadataFixedValues', async () => {
+    const wrapper = mount(FormGenerator, {
+      propsData: {
+        fixedValues: {},
+        formData: factory.dataset(),
+        selectedShape: 'https://aims-projekt.de/ap/agent/',
+        shapes: listApplicationProfile,
+        shapesMimeType: 'text/turtle',
+        userReceiver: () => {
+          return {
+            displayName: defaultDisplayName,
+          };
+        },
+      },
+    });
+
+    await wrapper.vm.$nextTick();
+
+    // Wait for 1 second until everything is set up
+    await sleep(1000);
+
+    expect(wrapper.emitted('isValid')).toBeFalsy();
+
+    const allTextFields = wrapper.findAllComponents({ name: 'InputTextField' });
+    expect(allTextFields.length).toBe(1);
+
+    await allTextFields.wrappers[0].setValue('example@example.org');
+
+    // Wait for validation debounce
+    await sleep(1000);
+
+    expect(wrapper.emitted('isValid')).toBeTruthy();
+    // eslint-disable-next-line @typescript-eslint/no-non-null-assertion
+    expect(wrapper.emitted('isValid')!.length).toBe(1);
+    // eslint-disable-next-line @typescript-eslint/no-non-null-assertion
+    expect(wrapper.emitted('isValid')![0][0].conforms).toBeTruthy();
+  });
 });

src/base/LinkedDataHandler.ts

@@ -82,6 +82,10 @@ export default defineComponent({
       if (this.timeOuts[validationContext]) {
         clearTimeout(this.timeOuts[validationContext]);
       }
+      // Do not try to validate empty metadata sets
+      if (metadata.size === 0) {
+        return;
+      }
       const clonedMetadata = factory.dataset(
         Array.from(metadata)
       ) as unknown as Dataset;