Hide coverage fuzz testing mr widget

* Hide when we don't have endpoint path defined
* Prettier code cleanup

ee/app/assets/javascripts/vue_shared/security_reports/grouped_security_reports_app.vue

@@ -223,7 +223,14 @@ export default {
       return this.enabledReports.dast;
     },
     hasCoverageFuzzingReports() {
-      return this.enabledReports.coverageFuzzing;
+      /*
+       * Fixes bug https://gitlab.com/gitlab-org/gitlab/-/issues/255183
+       * For https://gitlab.com/gitlab-org/gitlab/-/issues/210343 change to:
+       * return this.enabledReports.coverageFuzzing;
+       */
+      return (
+        gl?.mrWidgetData?.coverage_fuzzing_comparison_path && this.enabledReports.coverageFuzzing
+      );
     },
     hasSastReports() {
       return this.enabledReports.sast;

ee/spec/frontend/vue_shared/security_reports/grouped_security_reports_app_spec.js

@@ -581,6 +581,40 @@ describe('Grouped security reports app', () => {
     });
   });
 
+  describe('coverage fuzzing reports', () => {
+    /*
+     * Fixes bug https://gitlab.com/gitlab-org/gitlab/-/issues/255183
+     * For https://gitlab.com/gitlab-org/gitlab/-/issues/210343
+     * replace with updated tests
+     */
+    describe.each`
+      endpoint      | shouldShowFuzzing
+      ${'/fuzzing'} | ${true}
+      ${undefined}  | ${false}
+    `(
+      'given coverage fuzzing comparision enpoint is $endpoint',
+      ({ endpoint, shouldShowFuzzing }) => {
+        beforeEach(() => {
+          gl.mrWidgetData = gl.mrWidgetData || {};
+          gl.mrWidgetData.coverage_fuzzing_comparison_path = endpoint;
+
+          createWrapper({
+            ...props,
+            enabledReports: {
+              coverageFuzzing: true,
+            },
+          });
+        });
+
+        it(`${shouldShowFuzzing ? 'renders' : 'does not render'}`, () => {
+          expect(wrapper.find('[data-qa-selector="coverage_fuzzing_report"]').exists()).toBe(
+            shouldShowFuzzing,
+          );
+        });
+      },
+    );
+  });
+
   describe('Out of date report', () => {
     const createComponent = (extraProp, done) => {
       gl.mrWidgetData = gl.mrWidgetData || {};