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How to use DataProviderHolder class of org.testng package

Best Testng code snippet using org.testng.DataProviderHolder

Source:Parameters.java

...379      throw new TestNGException("Conversion issue on parameter: " + paramName, e);380    }381    throw new TestNGException("Unsupported type parameter : " + type);382  }383  private static DataProviderHolder findDataProvider(Object instance, ITestClass clazz,384                                                     ConstructorOrMethod m,385                                                     IAnnotationFinder finder, ITestContext context) {386    DataProviderHolder result = null;387    IDataProvidable dp = findDataProviderInfo(clazz, m, finder);388    if (dp != null) {389      String dataProviderName = dp.getDataProvider();390      Class dataProviderClass = dp.getDataProviderClass();391      if (! Utils.isStringEmpty(dataProviderName)) {392        result = findDataProvider(instance, clazz, finder, dataProviderName, dataProviderClass, context);393        if(null == result) {394          throw new TestNGException("Method " + m + " requires a @DataProvider named : "395              + dataProviderName + (dataProviderClass != null ? " in class " + dataProviderClass.getName() : "")396              );397        }398      }399    }400    return result;401  }402  /**403   * Find the data provider info (data provider name and class) on either @Test(dataProvider),404   * @Factory(dataProvider) on a method or @Factory(dataProvider) on a constructor.405   */406  private static IDataProvidable findDataProviderInfo(ITestClass clazz, ConstructorOrMethod m,407      IAnnotationFinder finder) {408    IDataProvidable result;409    if (m.getMethod() != null) {410      //411      // @Test(dataProvider) on a method412      //413      result = AnnotationHelper.findTest(finder, m.getMethod());414      if (result == null) {415        //416        // @Factory(dataProvider) on a method417        //418        result = AnnotationHelper.findFactory(finder, m.getMethod());419      }420      if (result == null) {421        //422        // @Test(dataProvider) on a class423        result = AnnotationHelper.findTest(finder, clazz.getRealClass());424      }425    } else {426      //427      // @Factory(dataProvider) on a constructor428      //429      result = AnnotationHelper.findFactory(finder, m.getConstructor());430    }431    return result;432  }433  /**434   * Find a method that has a @DataProvider(name=name)435   */436  private static DataProviderHolder findDataProvider(Object instance, ITestClass clazz,437                                                     IAnnotationFinder finder,438                                                     String name, Class<?> dataProviderClass,439                                                     ITestContext context)440  {441    DataProviderHolder result = null;442    Class<?> cls = clazz.getRealClass();443    boolean shouldBeStatic = false;444    if (dataProviderClass != null) {445      cls = dataProviderClass;446      shouldBeStatic = true;447    }448    for (Method m : ClassHelper.getAvailableMethods(cls)) {449      IDataProviderAnnotation dp = finder.findAnnotation(m, IDataProviderAnnotation.class);450      if (null != dp && name.equals(getDataProviderName(dp, m))) {451        Object instanceToUse;452        if (shouldBeStatic && (m.getModifiers() & Modifier.STATIC) == 0) {453          Injector injector = context.getInjector(clazz);454          if (injector != null) {455            instanceToUse = injector.getInstance(dataProviderClass);456          } else {457            instanceToUse = ClassHelper.newInstance(dataProviderClass);458          }459        } else {460          instanceToUse = instance;461        }462        // Not a static method but no instance exists, then create new one if possible463        if ((m.getModifiers() & Modifier.STATIC) == 0 && instanceToUse == null) {464          instanceToUse = ClassHelper.newInstanceOrNull(cls);465        }466        if (result != null) {467          throw new TestNGException("Found two providers called '" + name + "' on " + cls);468        }469        result = new DataProviderHolder(dp, m, instanceToUse);470      }471    }472    return result;473  }474  private static String getDataProviderName(IDataProviderAnnotation dp, Method m) {475	  return Strings.isNullOrEmpty(dp.getName()) ? m.getName() : dp.getName();476  }477  @SuppressWarnings({"deprecation"})478  private static Object[] createParameters(Method m, MethodParameters params,479      IAnnotationFinder finder, XmlSuite xmlSuite, Class annotationClass, String atName)480  {481    List<Object> result = Lists.newArrayList();482    Object[] extraParameters;483    //484    // Try to find an @Parameters annotation485    //486    IParametersAnnotation annotation = finder.findAnnotation(m, IParametersAnnotation.class);487    Class<?>[] types = m.getParameterTypes();488    if(null != annotation) {489      String[] parameterNames = annotation.getValue();490      extraParameters = createParametersForMethod(m, types,491          finder.findOptionalValues(m), atName, parameterNames, params, xmlSuite);492    }493    //494    // Else, use the deprecated syntax495    //496    else {497      IParameterizable a = (IParameterizable) finder.findAnnotation(m, annotationClass);498      if(null != a && a.getParameters().length > 0) {499        String[] parameterNames = a.getParameters();500        extraParameters = createParametersForMethod(m, types,501            finder.findOptionalValues(m), atName, parameterNames, params, xmlSuite);502      }503      else {504        extraParameters = createParametersForMethod(m, types, finder.findOptionalValues(m), atName, new String[0], params, xmlSuite);505      }506    }507    //508    // Add the extra parameters we found509    //510    Collections.addAll(result, extraParameters);511    // If the method declared an Object[] parameter and we have parameter values, inject them512    for (int i = 0; i < types.length; i++) {513        if (Object[].class.equals(types[i])) {514            result.add(i, params.parameterValues);515        }516    }517    return result.toArray(new Object[result.size()]);518  }519  /**520   * If the method has parameters, fill them in. Either by using a @DataProvider521   * if any was provided, or by looking up <parameters> in testng.xml522   * @return An Iterator over the values for each parameter of this523   * method.524   */525  public static ParameterHolder handleParameters(final ITestNGMethod testMethod,526      Map<String, String> allParameterNames,527      Object instance,528      MethodParameters methodParams,529      XmlSuite xmlSuite,530      IAnnotationFinder annotationFinder,531      Object fedInstance)532  {533    /*534     * Do we have a @DataProvider? If yes, then we have several535     * sets of parameters for this method536     */537    final DataProviderHolder dataProviderHolder =538        findDataProvider(instance, testMethod.getTestClass(),539            testMethod.getConstructorOrMethod(), annotationFinder, methodParams.context);540    if (null != dataProviderHolder) {541      int parameterCount = testMethod.getConstructorOrMethod().getParameterTypes().length;542      for (int i = 0; i < parameterCount; i++) {543        String n = "param" + i;544        allParameterNames.put(n, n);545      }546      final Iterator<Object[]> parameters = MethodInvocationHelper.invokeDataProvider(547          dataProviderHolder.instance, /* a test instance or null if the dataprovider is static*/548          dataProviderHolder.method,549          testMethod,550          methodParams.context,551          fedInstance,...

Source:ParameterHolder.java

1package org.testng.internal;2import org.testng.IDataProviderMethod;3import java.util.Iterator;4/**5 * A simple holder for parameters that contains the parameters and where these came from (data6 * provider or testng.xml)7 *8 * @author cbeust9 */10public class ParameterHolder {11  /** Origin of the parameters. */12  public enum ParameterOrigin {13    ORIGIN_DATA_PROVIDER, // A data provider14    ORIGIN_XML, // TestNG XML suite15    NATIVE // Native injection is involved.16  }17  final IDataProviderMethod dataProviderHolder;18  final Iterator<Object[]> parameters;19  final ParameterOrigin origin;20  public ParameterHolder(21      Iterator<Object[]> parameters, ParameterOrigin origin, IDataProviderMethod dph) {22    super();23    this.parameters = parameters;24    this.origin = origin;25    this.dataProviderHolder = dph;26  }27}...

Source:DataProviderHolder.java

...3import java.lang.reflect.Method;4/**5 * A holder for a pair of Method and IDataProviderAnnotation6 */7public class DataProviderHolder {8  Object instance;9  Method method;10  IDataProviderAnnotation annotation;11  public DataProviderHolder(IDataProviderAnnotation annotation, Method method, Object instance) {12    this.annotation = annotation;13    this.method = method;14    this.instance = instance;15  }16}...

DataProviderHolder

Using AI Code Generation

1package com.test;2import org.testng.annotations.DataProvider;3import org.testng.annotations.Test;4public class TestNGDataProvider {5    @DataProvider(name = "data-provider")6    public Object[][] dataProviderMethod() {7        return new Object[][] { { "data one" }, { "data two" } };8    }9    @Test(dataProvider = "data-provider")10    public void testMethod(String data) {11        System.out.println("Data is: " + data);12    }13}14package com.test;15import org.testng.annotations.DataProvider;16import org.testng.annotations.Test;17public class TestNGDataProvider {18    @DataProvider(name = "data-provider")19    public Object[][] dataProviderMethod() {20        return new Object[][] { { "data one" }, { "data two" } };21    }22    @Test(dataProvider = "data-provider")23    public void testMethod(String data) {24        System.out.println("Data is: " + data);25    }26}27package com.test;28import org.testng.annotations.DataProvider;29import org.testng.annotations.Test;30public class TestNGDataProvider {31    @DataProvider(name = "data-provider")32    public Object[][] dataProviderMethod() {33        return new Object[][] { { "data one" }, { "data two" } };34    }35    @Test(dataProvider = "data-provider")36    public void testMethod(String data) {37        System.out.println("Data is: " + data);38    }39}40package com.test;41import org.testng.annotations.DataProvider;42import org.testng.annotations.Test;43public class TestNGDataProvider {44    @DataProvider(name = "data-provider")45    public Object[][] dataProviderMethod() {46        return new Object[][] { { "data one" }, { "data two" } };47    }48    @Test(dataProvider = "data-provider")49    public void testMethod(String data) {50        System.out.println("Data is: " + data);51    }52}53package com.test;54import org.testng.annotations.DataProvider;55import org.testng.annotations.Test;56public class TestNGDataProvider {57    @DataProvider(name = "data-provider")58    public Object[][] dataProviderMethod() {59        return new Object[][] { { "data one" }, { "data two" } };60    }

DataProviderHolder

Using AI Code Generation

1package com.test;2import org.testng.annotations.DataProvider;3import org.testng.annotations.Test;4{5@DataProvider(name = "data-provider")6public Object[][] dataProviderMethod() {7return new Object[][] { { "data one" }, { "data two" } };8}9@Test(dataProvider = "data-provider")10public void testMethod(String data) {11System.out.println("Data is: " + data);12}13}14package com.test;15import org.testng.annotations.DataProvider;16import org.testng.annotations.Test;17{18@Test(dataProvider = "data-provider", dataProviderClass = DataProviderHolder.class)19public void testMethod(String data) {20System.out.println("Data is: " + data);21}22}23package com.test;24import org.testng.annotations.DataProvider;25import org.testng.annotations.Test;26{27@Test(dataProvider = "data-provider", dataProviderClass = DataProviderHolder.class)28public void testMethod(String data) {29System.out.println("Data is: " + data);30}31}32package com.test;33import org.testng.annotations.DataProvider;34import org.testng.annotations.Test;35{36@Test(dataProvider = "data-provider", dataProviderClass = DataProviderHolder.class)37public void testMethod(String data) {38System.out.println("Data is: " + data);39}40}41package com.test;42import org.testng.annotations.DataProvider;43import org.testng.annotations.Test;44{45@Test(dataProvider = "data-provider", dataProviderClass = DataProviderHolder.class)46public void testMethod(String data) {47System.out.println("Data is: " + data);48}49}50package com.test;51import org.testng.annotations.DataProvider;52import org.testng.annotations.Test;53{54@Test(dataProvider = "data-provider", dataProviderClass = DataProviderHolder.class)55public void testMethod(String data) {56System.out.println("Data is: " + data);57}58}59package com.test;60import org.testng.annotations.DataProvider;61import org.testng.annotations.Test;

DataProviderHolder

Using AI Code Generation

1import org.testng.annotations.DataProvider;2import org.testng.annotations.Test;3import org.testng.internal.DataProviderHolder;4public class TestNGDataProviderFromTestNGXML {5    @DataProvider(name = "testData")6    public Object[][] getTestData() {7        return DataProviderHolder.getInstance().get("testData");8    }9    @Test(dataProvider = "testData")10    public void testMethod(String name, int age) {11        System.out.println("Name: " + name + " Age: " + age);12    }13}

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Assertions in TestNG: Examine what TestNG assertions are, the various types of TestNG assertions, and situations that relate to Selenium automated testing.
DataProviders in TestNG: Deep dive into learning more about TestNG's DataProvider and how to effectively use it in our test scripts for Selenium test automation.
Parameterization in TestNG: Here are the several parameterization strategies used in TestNG tests and how to apply them in Selenium automation scripts.
TestNG Listeners in Selenium WebDriver: Understand the various TestNG listeners to utilize them effectively for your next plan when working with TestNG and Selenium automation.
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