test: replace coverage fix todo

lib/manager/npm/update/locked-dependency/parent-version.spec.ts

@@ -65,6 +65,28 @@ describe(getName(__filename), () => {
         )
       ).toEqual('4.9.1');
     });
+    it('finds when a greater version is needed', async () => {
+      httpMock
+        .scope('https://registry.npmjs.org')
+        .get('/qs')
+        .reply(200, {
+          name: 'qs',
+          repository: {},
+          versions: {
+            '0.6.6': {},
+            '6.0.4': {},
+            '6.2.0': {},
+          },
+          'dist-tags': { latest: '6.2.0' },
+        });
+      httpMock
+        .scope('https://registry.npmjs.org')
+        .get('/express')
+        .reply(200, expressJson);
+      expect(
+        await findFirstParentVersion('express', '4.0.0', 'qs', '6.0.4')
+      ).toEqual('4.14.0');
+    });
     it('finds when a range matches greater versions', async () => {
       httpMock
         .scope('https://registry.npmjs.org')

lib/manager/npm/update/locked-dependency/parent-version.ts

@@ -64,7 +64,6 @@ export async function findFirstParentVersion(
         return parentVersion;
       }
       if (semver.isVersion(constraint)) {
-        // istanbul ignore if: TODO FIX ME
         if (semver.isGreaterThan(constraint, targetVersion)) {
           // it's not the version we were after - the parent skipped to a higher version
           logger.debug(