Class ReflectionRecipes

java.lang.Object
org.testng.internal.reflect.ReflectionRecipes
public final class ReflectionRecipes extends Object
Utility class to handle reflection.
Author:
Nitin Verma

  • Method Details

    • isInstanceOf

      public static boolean isInstanceOf(Class<?> reference, Object object)
      Checks if an instance is an instance of the given class.
      Parameters:
      reference - reference class.
      object - instance to be tested.
      Returns:
      is an instance-of or not

    • isOrImplementsInterface

      public static boolean isOrImplementsInterface(Class<?> reference, Class<?> clazz)
      Checks a class instance for being a given interface or its implementation.
      Parameters:
      reference - reference interface instance.
      clazz - class instance to be tested.
      Returns:
      would an instance of 'clazz' be an instance of reference interface.

    • isOrExtends

      public static boolean isOrExtends(Class<?> reference, Class<?> clazz)
      Checks a class instance for being a given class or its sub-class.
      Parameters:
      reference - reference class instance.
      clazz - class instance to be tested.
      Returns:
      would an instance of 'clazz' be an instance of reference class.

    • classesFromParameters

      public static Class<?>[] classesFromParameters(Parameter[] parameters)
      Extracts class instances from parameters.
      Parameters:
      parameters - an array of parameters.
      Returns:
      parameter types.

    • getMethodParameters

      public static Parameter[] getMethodParameters(Method method)
      Extracts method parameters.
      Parameters:
      method - any valid method.
      Returns:
      extracted method parameters.

    • getConstructorParameters

      public static Parameter[] getConstructorParameters(Constructor<?> constructor)
      Extracts constructor parameters.
      Parameters:
      constructor - any valid constructor.
      Returns:
      extracted constructor parameters.

    • matchArrayEnding

      public static boolean matchArrayEnding(Parameter[] parameters, Object[] param)
      Returns:
      matches or not
      See Also:

    • matchArrayEnding

      public static boolean matchArrayEnding(Class<?>[] classes, Object[] args)
      Matches an array of class instances to an array of instances having last class instance an array.

      Assuming upper case letters denote classes and corresponding lowercase its instances. Classes {A,B,C...}, instances {a,b,c1,c2} ==> check for {a,b,{c1,c2}} match or Classes {A,B,C[]}, instances {a,b,c1,c2} ==> check for {a,b,{c1,c2}} match both of the above cases are equivalent.

      Parameters:
      classes - array of class instances to check against.
      args - instances to be verified.
      Returns:
      matches or not

    • exactMatch

      public static boolean exactMatch(Parameter[] parameters, Object[] args)
      Matches an array of parameters to an array of instances.
      Returns:
      matches or not
      See Also:

    • exactMatch

      public static boolean exactMatch(Class<?>[] classes, Object[] args)
      Matches an array of class instances to an array of instances.
      Parameters:
      classes - array of class instances to check against.
      args - instances to be verified.
      Returns:
      matches or not

    • lenientMatch

      public static boolean lenientMatch(Parameter[] parameters, Object[] args)
      Matches an array of parameters to an array of instances.
      Returns:
      matches or not
      See Also:

    • lenientMatch

      public static boolean lenientMatch(Class<?>[] classes, Object[] args)
      Matches an array of class instances to an array of instances. Such that {int, boolean, float} matches {int, boolean}
      Parameters:
      classes - array of class instances to check against.
      args - instances to be verified.
      Returns:
      matches or not

    • filter

      public static Parameter[] filter(Parameter[] parameters, Set<InjectableParameter> filters)
      Omits 1. org.testng.ITestContext or its implementations from input array 2. org.testng.ITestResult or its implementations from input array 3. org.testng.xml.XmlTest or its implementations from input array 4. First method depending on filters.

      An example would be Input: {ITestContext.class, int.class, Boolean.class, TestContext.class} Output: {int.class, Boolean.class}

      Parameters:
      parameters - array of parameter instances under question.
      filters - filters to use.
      Returns:
      Injects free array of class instances.

    • inject

      public static Object[] inject(Parameter[] parameters, Set<InjectableParameter> filters, Object[] args, Method injectionMethod, ITestContext context, ITestResult testResult)
      Injects appropriate arguments.
      Parameters:
      parameters - array of parameter instances under question.
      filters - filters to use.
      args - user supplied arguments.
      injectionMethod - current test method.
      context - current test context.
      testResult - on going test results.
      Returns:
      injected arguments.

    • inject

      public static Object[] inject(Parameter[] parameters, Set<InjectableParameter> filters, Object[] args, Constructor<?> constructor, ITestContext context, ITestResult testResult)
      Injects appropriate arguments.
      Parameters:
      parameters - array of parameter instances under question.
      filters - filters to use.
      args - user supplied arguments.
      constructor - current test method.
      context - current test context.
      testResult - on going test results.
      Returns:
      injected arguments.