Handle applying to the whole doc. Fixes #142

v5/patch.go

@@ -845,6 +845,29 @@ func (p Patch) replace(doc *container, op Operation, options *ApplyOptions) erro
  return errors.Wrapf(err, "replace operation failed to decode path")
  }
 
+ if path == "" {
+ val := op.value()
+
+ if val.which == eRaw {
+ if !val.tryDoc() {
+ if !val.tryAry() {
+ return errors.Wrapf(err, "replace operation value must be object or array")
+ }
+ }
+ }
+
+ switch val.which {
+ case eAry:
+ *doc = &val.ary
+ case eDoc:
+ *doc = val.doc
+ case eRaw:
+ return errors.Wrapf(err, "replace operation hit impossible case")
+ }
+
+ return nil
+ }
+
  con, key := findObject(doc, path, options)
 
  if con == nil {
@@ -911,6 +934,25 @@ func (p Patch) test(doc *container, op Operation, options *ApplyOptions) error {
  return errors.Wrapf(err, "test operation failed to decode path")
  }
 
+ if path == "" {
+ var self lazyNode
+
+ switch sv := (*doc).(type) {
+ case *partialDoc:
+ self.doc = sv
+ self.which = eDoc
+ case *partialArray:
+ self.ary = *sv
+ self.which = eAry
+ }
+
+ if self.equal(op.value()) {
+ return nil
+ }
+
+ return errors.Wrapf(ErrTestFailed, "testing value %s failed", path)
+ }
+
  con, key := findObject(doc, path, options)
 
  if con == nil {

v5/patch_test.go

@@ -540,6 +540,37 @@ var Cases = []Case{
  false,
  true,
  },
+ {
+ `{
+ "id": "00000000-0000-0000-0000-000000000000",
+ "parentID": "00000000-0000-0000-0000-000000000000"
+}`,
+ `[
+ {
+ "op": "test",
+ "path": "",
+ "value": {
+ "id": "00000000-0000-0000-0000-000000000000",
+ "parentID": "00000000-0000-0000-0000-000000000000"
+ }
+ },
+ {
+ "op": "replace",
+ "path": "",
+ "value": {
+ "id": "759981e8-ec68-4639-a83e-513225914ecb",
+ "originalID": "bar",
+ "parentID": "00000000-0000-0000-0000-000000000000"
+ }
+ }
+]`,
+ `{
+ "id" : "759981e8-ec68-4639-a83e-513225914ecb",
+ "originalID" : "bar",
+ "parentID" : "00000000-0000-0000-0000-000000000000"
+}`,
+ false, true,
+ },
 }
 
 type BadCase struct {