Best Testng code snippet using org.testng.Interface IDataProviderInterceptor.intercept
Source: IDataProviderInterceptor.java
1package org.testng;2import java.util.Iterator;3/**4 * This interface helps define an interceptor for data providers. Implementations of this TestNG5 * listener can be wired in via the <code>@Listeners</code> annotation or via the6 * <code>listeners</code> tag in the suite file or via a Service Provider Interface mechanism.7 *8 * The implementation would be able to alter the actual set of data using which a test method would9 * be iterated upon.10 */11public interface IDataProviderInterceptor extends ITestNGListener {12 /**13 * @param original - The original data set as produced by a particular data provider.14 * @param dataProviderMethod - The {@link IDataProviderMethod} method object which represents the15 * data provider that was invoked.16 * @param method - The {@link ITestNGMethod} method object which represents the test method that17 * will receive the parameters.18 * @param iTestContext - The {@link ITestContext} object that represents the current test19 * context.20 * @return - The altered data set that would be used by TestNG to run the test method.21 */22 Iterator<Object[]> intercept(23 Iterator<Object[]> original,24 IDataProviderMethod dataProviderMethod,25 ITestNGMethod method,26 ITestContext iTestContext);27}...
intercept
Using AI Code Generation
1package com.test;2import org.testng.annotations.DataProvider;3public class DataProviderInterceptor implements IDataProviderInterceptor {4 public Object[][] intercept(DataProviderMethodContext context) {5 Object[][] data = context.provideData();6 return data;7 }8}9package com.test;10import java.lang.reflect.Constructor;11import java.lang.reflect.Method;12import org.testng.annotations.ITestAnnotation;13public class AnnotationTransformer implements IAnnotationTransformer {14 public void transform(ITestAnnotation annotation, Class testClass, Constructor testConstructor, Method testMethod) {15 annotation.setDataProviderClass(DataProviderInterceptor.class);16 }17}18package com.test;19import java.lang.reflect.Constructor;20import java.lang.reflect.Method;21import org.testng.annotations.ITestAnnotation;22public class AnnotationTransformer2 implements IAnnotationTransformer2 {23 public void transform(ITestAnnotation annotation, Class testClass, Constructor testConstructor, Method testMethod) {24 annotation.setDataProviderClass(DataProviderInterceptor.class);25 }26}27package com.test;28import java.lang.reflect.Constructor;29import java.lang.reflect.Method;30import org.testng.annotations.ITestAnnotation;31public class AnnotationTransformer3 implements IAnnotationTransformer3 {32 public void transform(ITestAnnotation annotation, Class testClass, Constructor testConstructor, Method testMethod, IDataProviderMethod dataProviderMethod) {33 annotation.setDataProviderClass(DataProviderInterceptor.class);34 }35}36package com.test;37import java.lang.reflect.Constructor;38import java.lang.reflect.Method;39import org.testng.annotations.ITestAnnotation;40public class AnnotationTransformer4 implements IAnnotationTransformer4 {41 public void transform(ITestAnnotation annotation, Class testClass, Constructor testConstructor, Method testMethod, IDataProviderMethod dataProviderMethod) {42 annotation.setDataProviderClass(DataProviderInterceptor.class);43 }44}45package com.test;46import java.lang.reflect.Constructor;47import java.lang.reflect.Method;48import org.testng.annotations.ITestAnnotation;49public class AnnotationTransformer5 implements IAnnotationTransformer5 {50 public void transform(ITestAnnotation annotation, Class testClass
intercept
Using AI Code Generation
1public class DataProviderInterceptor implements IDataProviderInterceptor {2 public Object[][] intercept(Object[] params, Method method, ITestContext context) {3 Object[][] data = null;4 try {5 data = getData(params);6 } catch (IOException e) {7 e.printStackTrace();8 }9 return data;10 }11 public Object[][] getData(Object[] params) throws IOException {12 String fileName = (String) params[0];13 String sheetName = (String) params[1];14 ExcelReader excel = new ExcelReader(fileName);15 int rows = excel.getRowCount(sheetName);16 int cols = excel.getColumnCount(sheetName);17 Object[][] data = new Object[rows - 1][cols];18 for (int rowNum = 2; rowNum <= rows; rowNum++) {19 for (int colNum = 0; colNum < cols; colNum++) {20 data[rowNum - 2][colNum] = excel.getCellData(sheetName, colNum, rowNum);21 }22 }23 return data;24 }25}26public class DataProviderInterceptor implements IDataProviderInterceptor {27 public Object[][] intercept(Object[] params, Method method, ITestContext context) {28 Object[][] data = null;29 try {30 data = getData(params);31 } catch (IOException e) {32 e.printStackTrace();33 }34 return data;35 }36 public Object[][] getData(Object[] params) throws IOException {37 String fileName = (String) params[0];38 String sheetName = (String) params[1];39 ExcelReader excel = new ExcelReader(fileName);40 int rows = excel.getRowCount(sheetName);41 int cols = excel.getColumnCount(sheetName);42 Object[][] data = new Object[rows - 1][cols];43 for (int rowNum = 2; rowNum <= rows; rowNum++) {44 for (int colNum = 0; colNum < cols; colNum++) {45 data[rowNum - 2][colNum] = excel.getCellData(sheetName, colNum, rowNum);46 }47 }48 return data;49 }50}51package com.test;52import org.testng.annotations.DataProvider;53public class DataProviderClass {54 @DataProvider(name = "testData")55 public static Object[][] getData() {
intercept
Using AI Code Generation
1import org.testng.annotations.DataProvider;2import org.testng.annotations.Test;3import org.testng.IDataProviderInterceptor;4import org.testng.ITestContext;5public class DataProviderInterceptorTest implements IDataProviderInterceptor {6 public void intercept(DataProviderMethodContext context, ITestContext testContext) {7 String[] data = context.getArguments();8 for(String d : data) {9 System.out.println("Data : "+d);10 }11 }12 @DataProvider(name = "dp1")13 public Object[][] dp1() {14 return new Object[][] { { "data1" }, { "data2" }, { "data3" } };15 }16 @Test(dataProvider = "dp1")17 public void test1(String data) {18 System.out.println("Test1 : "+data);19 }20}
intercept
Using AI Code Generation
1import org.testng.annotations.DataProvider;2import org.testng.annotations.Test;3import org.testng.IDataProviderInterceptor;4import org.testng.ITestContext;5public class DataProviderInterceptorTest implements IDataProviderInterceptor {6 public void intercept(DataProviderMethodContext context, ITestContext testContext) {7 String[] data = context.getArguments();8 for(String d : data) {9 System.out.println("Data : "+d);10 }11 }12 @DataProvider(name = "dp1")13 public Object[][] dp1() {14 return new Object[][] { { "data1" }, { "data2" }, { "data3" } };15 }16 @Test(dataProvider = "dp1")17 public void test1(String data) {18 System.out.println("Test1 : "+data);19 }20}
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When you enable parallel then there will be some time between the beforeInvocation
and afterInvocation
in the logs as you have noticed and that difference in time varies from test to test hence the staggered output.
If what you want is the start and end messages next to each other then you are basically throwing out the time factor and as such can simply add your beforeInvocation
message to the afterInvocation
method as follows:
public class TestExecutionListener implements IInvokedMethodListener {
@Override
public void beforeInvocation(IInvokedMethod iInvokedMethod, ITestResult iTestResult) {
}
@Override
public void afterInvocation(IInvokedMethod iInvokedMethod, ITestResult iTestResult) {
System.out.println("Testing : " + iInvokedMethod.getTestMethod().getMethodName());
System.out.println("Successfully Tested : " + iInvokedMethod.getTestMethod().getMethodName());
}
}
IMO this is the only way to do it as per your spec. However, if there is other information that must be gathered during the tests then perhaps you could buffer some logs in the TestExecutionListener
for example:
public class TestExecutionListener implements IInvokedMethodListener {
private Map<Integer, Deque<String>> logsMap = new HashMap<Integer, Deque<String>>();
public void log(IInvokedMethod iInvokedMethod, String log) {
if(!logsMap.containsKey(iInvokedMethod.getId())) {
logsMap.put(iInvokedMethod.getId(), new ArrayDeque<String>());
}
logsMap.get(iInvokedMethod.getId()).add(log);
}
@Override
public void beforeInvocation(IInvokedMethod iInvokedMethod, ITestResult iTestResult) {
log(iInvokedMethod, "Testing : " + iInvokedMethod.getTestMethod().getMethodName());
}
@Override
public void afterInvocation(IInvokedMethod iInvokedMethod, ITestResult iTestResult) {
log(iInvokedMethod, "Successfully Tested : " + iInvokedMethod.getTestMethod().getMethodName());
Deque<String> logs = logsMap.get(iInvokedMethod.getId());
while(!logs.isEmpty()) {
System.out.println(logs.poll());
}
}
}
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