only reset resource state if resource is modified (#634)

Signed-off-by: Andre Dietisheim <[email protected]>

Author: adietish

Diff for: src/main/kotlin/com/redhat/devtools/intellij/kubernetes/editor/EditorResource.kt

@@ -50,19 +50,22 @@ open class EditorResource(
     /**
      * Sets the resource to this instance. Only modified versions of the same resource are processed.
      * Will do nothing if the given resource is a different resource in name, namespace, kind etc.
+     * Resets the existing resource state if a new resource is set
      *
      * @param new the new resource that should be set to this editor resource
      *
-     * @see isSameResource
+     * @see [areEqual]
+     * @see [isSameResource]
+     * @see [setState]
      */
     fun setResource(new: HasMetadata) {
         resourceChangeMutex.withLock {
             val existing = this.resource
             if (new.isSameResource(existing)
                 && !areEqual(new, existing)) {
                 this.resource = new
+                setState(null) // reset state
             }
-            setState(null) // reset state
         }
     }
 
@@ -90,8 +93,11 @@ open class EditorResource(
 
     /**
      * Returns the state of this editor resource.
+     * Returns a cached state if it exists, creates it if it doesn't.
      *
      * @return the state of this editor resource.
+     *
+     * @see [createState]
      */
     fun getState(): EditorResourceState {
         return resourceChangeMutex.withLock {

Diff for: src/test/kotlin/com/redhat/devtools/intellij/kubernetes/editor/EditorResourceTest.kt

@@ -311,10 +311,14 @@ class EditorResourceTest {
         doReturn(true)
             .whenever(clusterResource).isAuthorized()
         val editorResource = createEditorResource(POD2)
+        val modifiedPod2 = PodBuilder(POD2)
+            .editMetadata()
+            .withLabels<String, String>(mapOf("jedi" to "yoda"))
+            .endMetadata()
+            .build()
         val error = Error("oh my!")
         editorResource.setState(error)
-        editorResource.setLastPushedPulled(POD3) // modified = (current resource != lastPushedPulled)
-        editorResource.setResource(POD2) // cause state to be recreated
+        editorResource.setResource(modifiedPod2) // new resource != existing resource, causes state to be reset and then recreated
         // when
         val state = editorResource.getState()
         // then