Package org.junit.jupiter.params

Class ParameterizedTestSpiInstantiator

  • class ParameterizedTestSpiInstantiator
extends java.lang.Object
    Since:
    5.12

    • Method Summary

      All Methods Static Methods Concrete Methods 
      Modifier and Type Method Description
      private static <T> java.lang.reflect.Constructor<?> findBestConstructor​(java.lang.Class<T> spiInterface, java.lang.Class<? extends T> implementationClass)
      Find the "best" constructor for the supplied implementation class.
      private static <T> java.lang.reflect.Constructor<? extends T> findConstructor​(java.lang.Class<T> spiInterface, java.lang.Class<? extends T> implementationClass)  
      (package private) static <T> T instantiate​(java.lang.Class<T> spiInterface, java.lang.Class<? extends T> implementationClass, org.junit.jupiter.api.extension.ExtensionContext extensionContext)  

      • Methods inherited from class java.lang.Object

        clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

    • Constructor Detail

      • ParameterizedTestSpiInstantiator

        ParameterizedTestSpiInstantiator()

    • Method Detail

      • instantiate

        static <T> T instantiate​(java.lang.Class<T> spiInterface,
                         java.lang.Class<? extends T> implementationClass,
                         org.junit.jupiter.api.extension.ExtensionContext extensionContext)

      • findConstructor

        private static <T> java.lang.reflect.Constructor<? extends T> findConstructor​(java.lang.Class<T> spiInterface,
                                                                              java.lang.Class<? extends T> implementationClass)

      • findBestConstructor

        private static <T> java.lang.reflect.Constructor<?> findBestConstructor​(java.lang.Class<T> spiInterface,
                                                                        java.lang.Class<? extends T> implementationClass)
        Find the "best" constructor for the supplied implementation class.

        For backward compatibility, it first checks for a single constructor and returns that. If there are multiple constructors, it checks for a default constructor which takes precedence over any other constructors. Otherwise, this method throws an exception stating that it failed to find a suitable constructor.