update default content for rdf+xml

Author: bourgeoa

lib/handlers/patch.js

@@ -29,6 +29,13 @@ function contentTypeForNew (req) {
   return contentTypeForNew
 }
 
+function contentForNew (contentType) {
+  let contentForNew = ''
+  if (contentType.includes('ld+json')) contentForNew = JSON.stringify('{}')
+  else if (contentType.includes('rdf+xml')) contentForNew = '<rdf:RDF\n xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#">\n\n</rdf:RDF>'
+  return contentForNew
+}
+
 // Handles a PATCH request
 async function patchHandler (req, res, next) {
   debug(`PATCH -- ${req.originalUrl}`)
@@ -102,7 +109,7 @@ function readGraph (resource) {
         // If the file does not exist, assume empty contents
         // (it will be created after a successful patch)
         if (err.code === 'ENOENT') {
-          fileContents = resource.contentType.includes('json') ? JSON.stringify('{}') : ''
+          fileContents = contentForNew(resource.contentType)
           // Fail on all other errors
         } else {
           return reject(error(500, `Original file read error: ${err}`))

test/integration/patch-test.js

@@ -95,6 +95,33 @@ describe('PATCH', () => {
       result: '[{"@id":"https://tim.localhost:7777/x","https://tim.localhost:7777/y":[{"@id":"https://tim.localhost:7777/z"}]}]'
     }))
 
+    describe('on a non-existent RDF+XML file', describePatch({
+      path: '/new.rdf',
+      exists: false,
+      patch: `<> a solid:InsertDeletePatch;
+                 solid:inserts { <x> <y> <z>. }.`
+    }, { // expected:
+      status: 200,
+      text: 'Patch applied successfully',
+      result: `<rdf:RDF
+ xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
+ xmlns:tim="https://tim.localhost:7777/">
+   <rdf:Description rdf:about="/x"><tim:y rdf:resource="/z"/></rdf:Description>
+</rdf:RDF>
+`
+    }))
+
+    describe('on a non-existent N3 file', describePatch({
+      path: '/new.n3',
+      exists: false,
+      patch: `<> a solid:InsertDeletePatch;
+                 solid:inserts { <x> <y> <z>. }.`
+    }, { // expected:
+      status: 200,
+      text: 'Patch applied successfully',
+      result: '@prefix : </new.n3#>.\n@prefix tim: </>.\n\ntim:x tim:y tim:z.\n\n'
+    }))
+
     describe('on a resource with read-only access', describePatch({
       path: '/read-only.ttl',
       patch: `<> a solid:InsertDeletePatch;