fix: Set target on Container POST

Notification emitted when a resource is created as a result of POST on a container sets the `target` property to the `Location` header, consistent with the requirements of `as:Add`.

Author: CxRes

lib/handlers/notify.js

@@ -60,11 +60,15 @@ function handler (req, res, next) {
         ) {
           const mediaType = negotiatedFields['content-type']
           const activity = getActivity(method, path)
+          const target = activity === 'Add'
+            ? res.getHeader('location')
+            : undefined
           if (ALLOWED_RDF_MIME_TYPES.includes(mediaType?.[0])) {
             return `${headerTemplate(negotiatedFields)}\r\n${solidRDFTemplate({
               activity,
               eventID,
               object: String(fullUrl),
+              target,
               date: eventDate,
               // We use eTag as a proxy for state for now
               state: res.getHeader('ETag'),

test/integration/prep-test.js

@@ -144,6 +144,7 @@ solid:inserts { <u> <v> <z>. }.`
           expect(notification).to.haveOwnProperty('published')
           expect(notification.type).to.equal('Add')
           expect(notification.object).to.match(/sampleContainer\/$/)
+          expect(notification.target).to.match(/sampleContainer\/.*example-prep.ttl$/)
           controller.abort()
         })
     })