add test case for #64

test/index.test.js

@@ -788,4 +788,41 @@ describe('Discriminators work', () => {
       assert.equal(doc.child.child.fullName, 'Ben Skywalker');
     });
   });
+
+  it('can access parent virtuals from child subdocument (gh-64)', async function() {
+    const childSchema = new mongoose.Schema({ firstName: String });
+    childSchema.virtual('uri').get(function() {
+      // This `uri` virtual is in a subdocument, so in order to get the
+      // parent's `uri` you need to use this plugin's `parent()` function.
+
+      const parent = this instanceof mongoose.Document
+        ? this.parent()
+        : mongooseLeanVirtuals.parent(this)
+      ;
+      return `${parent.uri}/child/gh-64-child`;
+    });
+
+    const parentSchema = new mongoose.Schema({
+      child: childSchema
+    });
+    parentSchema.virtual('uri').get(function() {
+      return `/parent/gh-64-parent`;
+    });
+
+    parentSchema.plugin(mongooseLeanVirtuals);
+
+    const Parent = mongoose.model('gh64', parentSchema);
+
+    const doc = { child: {} };
+
+    await Parent.create(doc);
+
+    let result = await Parent
+      .findOne()
+      .lean({ virtuals: true });
+    assert.equal(
+      result.child.uri,
+      '/parent/gh-64-parent/child/gh-64-child'
+    );  
+  });
 });