NIFI-3269 Added call to onPropertyModified when updating controller services in StandardProcessorTestRunner.

Added unit test to demonstrate change.

This closes #1374.

Signed-off-by: Andy LoPresto <alopresto@apache.org>

nifi-mock/src/main/java/org/apache/nifi/util/StandardProcessorTestRunner.java

@@ -754,9 +754,14 @@ public class StandardProcessorTestRunner implements TestRunner {
         final ValidationContext validationContext = new MockValidationContext(context, serviceStateManager, variableRegistry).getControllerServiceValidationContext(service);
         final ValidationResult validationResult = property.validate(value, validationContext);
 
+        final String oldValue = updatedProps.get(property);
         updatedProps.put(property, value);
         configuration.setProperties(updatedProps);
 
+        if ((value == null && oldValue != null) || (value != null && !value.equals(oldValue))) {
+            service.onPropertyModified(property, oldValue, value);
+        }
+
         return validationResult;
     }
 

nifi-mock/src/test/java/org/apache/nifi/util/TestStandardProcessorTestRunner.java

@@ -17,16 +17,24 @@
 package org.apache.nifi.util;
 
 import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertFalse;
 import static org.junit.Assert.assertNull;
+import static org.junit.Assert.assertTrue;
+import static org.junit.Assert.fail;
 
+import java.util.Arrays;
 import java.util.Collections;
 import java.util.HashMap;
 import java.util.HashSet;
+import java.util.List;
 import java.util.Map;
 import java.util.Set;
 import java.util.function.Predicate;
-
 import org.apache.nifi.annotation.lifecycle.OnStopped;
+import org.apache.nifi.components.PropertyDescriptor;
+import org.apache.nifi.components.ValidationResult;
+import org.apache.nifi.controller.AbstractControllerService;
+import org.apache.nifi.controller.ControllerService;
 import org.apache.nifi.flowfile.FlowFile;
 import org.apache.nifi.processor.AbstractProcessor;
 import org.apache.nifi.processor.ProcessContext;
@@ -34,6 +42,7 @@ import org.apache.nifi.processor.ProcessSession;
 import org.apache.nifi.processor.ProcessorInitializationContext;
 import org.apache.nifi.processor.Relationship;
 import org.apache.nifi.processor.exception.ProcessException;
+import org.apache.nifi.reporting.InitializationException;
 import org.junit.Test;
 
 public class TestStandardProcessorTestRunner {
@@ -167,6 +176,37 @@ public class TestStandardProcessorTestRunner {
         assertNull(runner.getVariableValue("hello"));
     }
 
+    @Test
+    public void testControllerServiceUpdateShouldCallOnSetProperty() {
+        // Arrange
+        final ControllerService testService = new SimpleTestService();
+        final AddAttributeProcessor proc = new AddAttributeProcessor();
+        final TestRunner runner = TestRunners.newTestRunner(proc);
+        final String serviceIdentifier = "test";
+        final String pdName = "name";
+        final String pdValue = "exampleName";
+        try {
+            runner.addControllerService(serviceIdentifier, testService);
+        } catch (InitializationException e) {
+            fail(e.getMessage());
+        }
+
+        assertFalse("onPropertyModified has been called", ((SimpleTestService) testService).isOpmCalled());
+
+        // Act
+        ValidationResult vr = runner.setProperty(testService, pdName, pdValue);
+
+        // Assert
+        assertTrue(vr.isValid());
+
+        ControllerServiceConfiguration csConf = ((MockProcessContext) runner.getProcessContext()).getConfiguration(serviceIdentifier);
+        PropertyDescriptor propertyDescriptor = testService.getPropertyDescriptor(pdName);
+        String retrievedPDValue = csConf.getProperties().get(propertyDescriptor);
+
+        assertEquals(pdValue, retrievedPDValue);
+        assertTrue("onPropertyModified has not been called", ((SimpleTestService) testService).isOpmCalled());
+    }
+
     private static class ProcessorWithOnStop extends AbstractProcessor {
 
         private int callsWithContext = 0;
@@ -264,4 +304,30 @@ public class TestStandardProcessorTestRunner {
             }
         }
     }
+
+    private static class SimpleTestService extends AbstractControllerService {
+        private final String PD_NAME = "name";
+        private PropertyDescriptor namePropertyDescriptor = new PropertyDescriptor.Builder()
+                .name(PD_NAME)
+                .displayName("Controller Service Name")
+                .required(false)
+                .sensitive(false)
+                .allowableValues("exampleName", "anotherExampleName")
+                .build();
+
+        private boolean opmCalled = false;
+
+        protected List<PropertyDescriptor> getSupportedPropertyDescriptors() {
+            return Arrays.asList(namePropertyDescriptor);
+        }
+
+        public void onPropertyModified(final PropertyDescriptor descriptor, final String oldValue, final String newValue) {
+            getLogger().info("onPropertyModified called for PD {} with old value {} and new value {}", new Object[]{descriptor.getName(), oldValue, newValue});
+            opmCalled = true;
+        }
+
+        public boolean isOpmCalled() {
+            return opmCalled;
+        }
+    }
 }