CPS-1526 Fix response message for PATCH operation

- Fixed the Response code and message when trying to update multiple
  data trees at once
- Response code changed to 400
- Since the patch operation across multiple data trees is not
  supported when xpath is set to root node xpath, appropriate message is
  returned in response
- Existing functionality of updating one data node with root node xpath
  remains as it is.
- Updated API documentation and release notes

Issue-ID: CPS-1526
Signed-off-by: arpitsingh <as00745003@techmahindra.com>
Change-Id: I5d25a06bb5d407316ccfb2f85877cbe56a9f6f31

1 files changed, 11 insertions, 0 deletions

diff --git a/cps-service/src/test/groovy/org/onap/cps/api/impl/CpsDataServiceImplSpec.groovy b/cps-service/src/test/groovy/org/onap/cps/api/impl/CpsDataServiceImplSpec.groovy
index faa5d2edbd..be397b92cd 100644
--- a/cps-service/src/test/groovy/org/onap/cps/api/impl/CpsDataServiceImplSpec.groovy
+++ b/cps-service/src/test/groovy/org/onap/cps/api/impl/CpsDataServiceImplSpec.groovy
@@ -240,6 +240,17 @@ class CpsDataServiceImplSpec extends Specification {
             'one leaf'        | '{"name": "some-name"}'
     }
 
+    def 'Update multiple data nodes' () {
+        given: 'schema set for given dataspace and anchor refers multipleDataTree model'
+            setupSchemaSetMocks('multipleDataTree.yang')
+        and: 'json string with multiple data trees'
+            def updatedJsonData = '{"first-container":{"a-leaf":"a-new-Value"},"last-container":{"x-leaf":"x-new-value"}}'
+        when: 'update operation is performed on multiple data nodes'
+            objectUnderTest.updateNodeLeaves(dataspaceName, anchorName, '/', updatedJsonData, observedTimestamp)
+        then: 'expected exception is thrown'
+            thrown(DataValidationException)
+    }
+
     def 'Update Bookstore node leaves' () {
         given: 'a DMI registry model'
             setupSchemaSetMocks('bookstore.yang')