diff options
Diffstat (limited to 'dmaap-bc/src/test/java/org/onap/dmaap/dbcapi/testframework/ReflectionHarness.java')
| -rw-r--r-- | dmaap-bc/src/test/java/org/onap/dmaap/dbcapi/testframework/ReflectionHarness.java | 169 |
1 files changed, 169 insertions, 0 deletions
diff --git a/dmaap-bc/src/test/java/org/onap/dmaap/dbcapi/testframework/ReflectionHarness.java b/dmaap-bc/src/test/java/org/onap/dmaap/dbcapi/testframework/ReflectionHarness.java new file mode 100644 index 0000000..be4b754 --- /dev/null +++ b/dmaap-bc/src/test/java/org/onap/dmaap/dbcapi/testframework/ReflectionHarness.java @@ -0,0 +1,169 @@ +/*- + * ============LICENSE_START======================================================= + * org.onap.dmaap + * ================================================================================ + * Copyright (C) 2018 AT&T Intellectual Property. All rights reserved. + * ================================================================================ + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + * ============LICENSE_END========================================================= + */ +package org.onap.dmaap.dbcapi.testframework; + +import static java.lang.System.err; +import static java.lang.System.out; +import static org.junit.Assert.assertTrue; + +import java.lang.reflect.InvocationTargetException; +import java.lang.reflect.Method; +import java.lang.reflect.Type; + +public class ReflectionHarness { + private static final String fmt = "%24s: %s%n"; + + + // following 2 functions taken from: http://tutorials.jenkov.com/java-reflection/getters-setters.html + public static boolean isGetter(Method method){ + if(!method.getName().startsWith("get")) return false; + if(method.getParameterTypes().length != 0) return false; + if(void.class.equals(method.getReturnType())) return false; + return true; + } + + public static boolean isSetter(Method method){ + if(!method.getName().startsWith("set")) return false; + if(method.getParameterTypes().length != 1) return false; + return true; + } + + private void testGetter( Class<?> c, Method m, Class<?>[] pType, String val ) { + out.format( fmt, "testGetter: Method Name", m.getName() ); + Class retType = m.getReturnType(); + out.format( fmt, "testGetter: Return Type ", retType ); + out.format( fmt, "testGetter: val ", (val != null)?val:"null" ); + assertTrue( pType.length == 0 ); + + try { + Object t = c.newInstance(); + + try { + m.setAccessible(true); + Object o = m.invoke( t ); + + if( retType.equals( Class.forName( "java.lang.String" ) ) ) { + if ( val == null ) { + out.format( fmt, "testGetter: expected null, got ", (o != null)?o:"null" ); + assert( o == null ); + } else { + out.format( fmt, "testGetter: expected val, got ", (o != null)?o:"null" ); + assert( o.equals( val ) ); + } + } else { + out.format( fmt, "testGetter: " + m.getName() + " untested retType", retType ); + + } + + } catch (InvocationTargetException e ) { + Throwable cause = e.getCause(); + err.format( "%s() returned %x%n", m.getName(), cause.getMessage() ); + } + + } catch (ClassNotFoundException nfe ){ + nfe.printStackTrace(); + } catch (IllegalArgumentException ae ) { + ae.printStackTrace(); + } catch (InstantiationException ie ) { + ie.printStackTrace(); + } catch (IllegalAccessException iae ) { + iae.printStackTrace(); + } + } + + private void testSetter( Class<?> c, Method m, Class<?>[] pType ) { + //out.format( fmt, "testSetter: Method Name", m.getName() ); + Class retType = m.getReturnType(); + //out.format( fmt, "testSetter: Return Type ", retType ); + //out.format( fmt, "testSetter: val ", (val != null)?val:"null" ); + assertTrue( pType.length == 1 ); + + try { + Object t = c.newInstance(); + + try { + m.setAccessible(true); + //out.format( fmt, "testSetter: " + m.getName() + " to try pType", pType[0] ); + if ( pType[0].equals( Class.forName( "java.lang.String" ) ) ) { + String val = "Validate123"; + Object o = m.invoke( t, val ); + } else if ( pType[0].equals( boolean.class ) ) { // note primitive class notation + boolean b = true; + Object o = m.invoke( t, b ); + } else { + out.format( fmt, "testSetter: " + m.getName() + " untested pType", pType[0] ); + } + + } catch (InvocationTargetException e ) { + Throwable cause = e.getCause(); + err.format( "%s() returned %x%n", m.getName(), cause.getMessage() ); + } + + } catch (ClassNotFoundException nfe ){ + nfe.printStackTrace(); + } catch (IllegalArgumentException ae ) { + ae.printStackTrace(); + } catch (InstantiationException ie ) { + ie.printStackTrace(); + } catch (IllegalAccessException iae ) { + iae.printStackTrace(); + } + } + + public void reflect(String... args) { + try { + Class<?> c = Class.forName(args[0]); + Method[] allMethods = c.getDeclaredMethods(); + String methodPrefix = args[1]; + for (Method m : allMethods) { + if (!m.getName().startsWith(methodPrefix)) { + continue; + } + //out.format("%s%n", m.toGenericString()); + + //out.format(fmt, "ReturnType", m.getReturnType()); + //out.format(fmt, "GenericReturnType", m.getGenericReturnType()); + + Class<?>[] pType = m.getParameterTypes(); + Type[] gpType = m.getGenericParameterTypes(); + for (int i = 0; i < pType.length; i++) { + //out.format(fmt,"ParameterType", pType[i]); + //out.format(fmt,"GenericParameterType", gpType[i]); + } + if ( isGetter( m ) ) { + testGetter( c, m, pType , args[2]); + } else if ( isSetter( m ) ) { + testSetter( c, m, pType ); + } + + Class<?>[] xType = m.getExceptionTypes(); + Type[] gxType = m.getGenericExceptionTypes(); + for (int i = 0; i < xType.length; i++) { + //out.format(fmt,"ExceptionType", xType[i]); + //out.format(fmt,"GenericExceptionType", gxType[i]); + } + } + + // production code should handle these exceptions more gracefully + } catch (ClassNotFoundException x) { + x.printStackTrace(); + } + } +} |