CPS Delta API: Update action for delta service

- Added code for Update action in Delta service
- added method to get updated Leaf data: getUpdatedLeavesBetweenSourceAndTargetDataNode
- added method to compare Leaf data common in source and target data
  node
- added method to process leaves unique to target data node
- added method to compare leaves: compareLeaves
- added method to store updated data to a DeltaReport: addUpdatedLeavesToDeltaReport
- Added corresponding testware

Issue-ID: CPS-1824
Signed-off-by: Arpit Singh <as00745003@techmahindra.com>
Change-Id: I3de07ea3227988784a0892f6a92c238ecf00a7fa

1 files changed, 71 insertions, 29 deletions

diff --git a/cps-service/src/test/groovy/org/onap/cps/api/impl/CpsDeltaServiceImplSpec.groovy b/cps-service/src/test/groovy/org/onap/cps/api/impl/CpsDeltaServiceImplSpec.groovy
index a4f4339737..e21c6f0e2f 100644
--- a/cps-service/src/test/groovy/org/onap/cps/api/impl/CpsDeltaServiceImplSpec.groovy
+++ b/cps-service/src/test/groovy/org/onap/cps/api/impl/CpsDeltaServiceImplSpec.groovy
@@ -21,7 +21,6 @@
 package org.onap.cps.api.impl
 
 import org.onap.cps.spi.model.DataNode
-import org.onap.cps.spi.model.DataNodeBuilder
 import spock.lang.Shared
 import spock.lang.Specification
 
@@ -29,38 +28,81 @@ class CpsDeltaServiceImplSpec extends Specification{
 
     def objectUnderTest = new CpsDeltaServiceImpl()
 
-    @Shared
-    def dataNodeWithLeafAndChildDataNode = [new DataNodeBuilder().withXpath('/parent').withLeaves(['parent-leaf': 'parent-payload'])
-                            .withChildDataNodes([new DataNodeBuilder().withXpath("/parent/child").withLeaves('child-leaf': 'child-payload').build()]).build()]
-    @Shared
-    def dataNodeWithChildDataNode = [new DataNodeBuilder().withXpath('/parent').withLeaves(['parent-leaf': 'parent-payload'])
-                                             .withChildDataNodes([new DataNodeBuilder().withXpath("/parent/child").build()]).build()]
-    @Shared
-    def emptyDataNode = [new DataNodeBuilder().withXpath('/parent').build()]
 
-    def 'Get delta between data nodes for removed data where source data node has #scenario'() {
+    static def sourceDataNodeWithLeafData = [new DataNode(xpath: '/parent', leaves: ['parent-leaf': 'parent-payload-in-source'])]
+    static def sourceDataNodeWithoutLeafData = [new DataNode(xpath: '/parent')]
+    static def targetDataNodeWithLeafData = [new DataNode(xpath: '/parent', leaves: ['parent-leaf': 'parent-payload-in-target'])]
+    static def targetDataNodeWithoutLeafData = [new DataNode(xpath: '/parent')]
+    static def sourceDataNodeWithMultipleLeaves = [new DataNode(xpath: '/parent', leaves: ['leaf-1': 'leaf-1-in-source', 'leaf-2': 'leaf-2-in-source'])]
+    static def targetDataNodeWithMultipleLeaves = [new DataNode(xpath: '/parent', leaves: ['leaf-1': 'leaf-1-in-target', 'leaf-2': 'leaf-2-in-target'])]
+
+    def 'Get delta between data nodes for REMOVED data where source data node has #scenario'() {
+        when: 'attempt to get delta between 2 data nodes'
+            def result = objectUnderTest.getDeltaReports(sourceDataNodeWithLeafData, [])
+        then: 'the delta report contains expected "remove" action'
+            assert result[0].action.equals('remove')
+        and : 'the delta report contains the expected xpath'
+            assert result[0].xpath == '/parent'
+        and: 'the delta report contains expected source data'
+            assert result[0].sourceData == ['parent-leaf': 'parent-payload-in-source']
+        and: 'the delta report contains no target data'
+            assert  result[0].targetData == null
+    }
+
+    def 'Get delta between data nodes with ADDED data where target data node has #scenario'() {
+        when: 'attempt to get delta between 2 data nodes'
+            def result = objectUnderTest.getDeltaReports([], targetDataNodeWithLeafData)
+        then: 'the delta report contains expected "add" action'
+            assert result[0].action.equals('add')
+        and: 'the delta report contains expected xpath'
+            assert result[0].xpath == '/parent'
+        and: 'the delta report contains no source data'
+            assert result[0].sourceData == null
+        and: 'the delta report contains expected target data'
+            assert result[0].targetData == ['parent-leaf': 'parent-payload-in-target']
+    }
+
+    def 'Delta Report between leaves for parent and child nodes, #scenario'() {
+        given: 'Two data nodes'
+            def sourceDataNode  = [new DataNode(xpath: '/parent', leaves: ['parent-leaf': 'parent-payload'], childDataNodes: [new DataNode(xpath: '/parent/child', leaves: ['child-leaf': 'child-payload'])])]
+            def targetDataNode  = [new DataNode(xpath: '/parent', leaves: ['parent-leaf': 'parent-payload-updated'], childDataNodes: [new DataNode(xpath: '/parent/child', leaves: ['child-leaf': 'child-payload-updated'])])]
+        when: 'attempt to get delta between 2 data nodes'
+            def result = objectUnderTest.getDeltaReports(sourceDataNode, targetDataNode)
+        then: 'the delta report contains expected "update" action'
+            assert result[index].action.equals('update')
+        and: 'the delta report contains expected xpath'
+            assert result[index].xpath == expectedXpath
+        and: 'the delta report contains expected source and target data'
+            assert result[index].sourceData == expectedSourceData
+            assert result[index].targetData == expectedTargetData
+        where: 'the following data was used'
+            scenario           | index || expectedXpath   | expectedSourceData                | expectedTargetData
+            'parent data node' | 0     || '/parent'       | ['parent-leaf': 'parent-payload'] | ['parent-leaf': 'parent-payload-updated']
+            'child data node'  | 1     || '/parent/child' | ['child-leaf': 'child-payload']   | ['child-leaf': 'child-payload-updated']
+    }
+
+    def 'Delta report between leaves, #scenario'() {
         when: 'attempt to get delta between 2 data nodes'
-            def result = objectUnderTest.getDeltaReports(sourceDataNode as Collection<DataNode>, emptyDataNode)
-        then: 'the delta report contains "remove" action with right data'
-            assert result.first().action.equals("remove")
-            assert result.first().xpath == "/parent/child"
-            assert result.first().sourceData == expectedSourceData
-        where: 'following data was used'
-            scenario       | sourceDataNode                   || expectedSourceData
-            'leaf data'    | dataNodeWithLeafAndChildDataNode || ['child-leaf': 'child-payload']
-            'no leaf data' | dataNodeWithChildDataNode        || null
+            def result = objectUnderTest.getDeltaReports(sourceDataNode, targetDataNode)
+        then: 'the delta report contains expected "update" action'
+            assert result[0].action.equals('update')
+        and: 'the delta report contains expected xpath'
+            assert result[0].xpath == '/parent'
+        and: 'the delta report contains expected source and target data'
+            assert result[0].sourceData == expectedSourceData
+            assert result[0].targetData == expectedTargetData
+        where: 'the following data was used'
+            scenario                                           | sourceDataNode                   | targetDataNode                   || expectedSourceData                                           | expectedTargetData
+            'source and target data nodes have leaves'         | sourceDataNodeWithLeafData       | targetDataNodeWithLeafData       || ['parent-leaf': 'parent-payload-in-source']                  | ['parent-leaf': 'parent-payload-in-target']
+            'only source data node has leaves'                 | sourceDataNodeWithLeafData       | targetDataNodeWithoutLeafData    || ['parent-leaf': 'parent-payload-in-source']                  | null
+            'only target data node has leaves'                 | sourceDataNodeWithoutLeafData    | targetDataNodeWithLeafData       || null                                                         | ['parent-leaf': 'parent-payload-in-target']
+            'source and target dsta node with multiple leaves' | sourceDataNodeWithMultipleLeaves | targetDataNodeWithMultipleLeaves || ['leaf-1': 'leaf-1-in-source', 'leaf-2': 'leaf-2-in-source'] | ['leaf-1': 'leaf-1-in-target', 'leaf-2': 'leaf-2-in-target']
     }
 
-    def 'Get delta between data nodes with new data where target data node has #scenario'() {
+    def 'Get delta between data nodes for updated data, where source and target data nodes have no leaves '() {
         when: 'attempt to get delta between 2 data nodes'
-            def result = objectUnderTest.getDeltaReports(emptyDataNode, targetDataNode)
-        then: 'the delta report contains "add" action with right data'
-            assert result.first().action.equals("add")
-            assert result.first().xpath == "/parent/child"
-            assert result.first().targetData == expectedTargetData
-        where: 'following data was used'
-            scenario       | targetDataNode                   || expectedTargetData
-            'leaf data'    | dataNodeWithLeafAndChildDataNode || ['child-leaf': 'child-payload']
-            'no leaf data' | dataNodeWithChildDataNode        || null
+            def result = objectUnderTest.getDeltaReports(sourceDataNodeWithoutLeafData, targetDataNodeWithoutLeafData)
+        then: 'the delta report contains "update" action with right data'
+            assert result.isEmpty()
     }
 }