ETAPI delete/patch, refactoring

test-etapi/delete-attribute.http

@@ -0,0 +1,56 @@
+POST {{triliumHost}}/etapi/create-note
+Content-Type: application/json
+
+{
+  "parentNoteId": "root",
+  "title": "Hello",
+  "type": "text",
+  "content": "Hi there!"
+}
+
+> {%
+    client.global.set("createdNoteId", response.body.note.noteId);
+    client.global.set("createdBranchId", response.body.branch.branchId);
+%}
+
+###
+
+POST {{triliumHost}}/etapi/attributes
+Content-Type: application/json
+
+{
+  "noteId": "{{createdNoteId}}",
+  "type": "label",
+  "name": "mylabel",
+  "value": "val",
+  "isInheritable": "true"
+}
+
+> {% client.global.set("createdAttributeId", response.body.attributeId); %}
+
+###
+
+GET {{triliumHost}}/etapi/notes/{{createdNoteId}}
+
+> {% client.assert(response.status === 200, "Response status is not 200"); %}
+
+###
+
+GET {{triliumHost}}/etapi/branches/{{createdBranchId}}
+
+> {% client.assert(response.status === 200, "Response status is not 200"); %}
+
+###
+
+DELETE {{triliumHost}}/etapi/attributes/{{createdAttributeId}}
+
+> {% client.assert(response.status === 204, "Response status is not 204"); %}
+
+###
+
+GET {{triliumHost}}/etapi/attributes/{{createdAttributeId}}
+
+> {% 
+    client.assert(response.status === 404, "Response status is not 404"); 
+    client.assert(response.body.code == "ATTRIBUTE_NOT_FOUND");
+%}