Class TypeMessages

java.lang.Object
org.assertj.core.internal.TypeHolder<String>
org.assertj.core.internal.TypeMessages

public class TypeMessages extends TypeHolder<String>
An internal holder of the custom message for type. It is used to store messages for registered classes. When looking for a message for a given class the holder returns the most relevant comparator.
  • Constructor Details

    • TypeMessages

      public TypeMessages()
  • Method Details

    • getMessageForType

      public String getMessageForType(Class<?> clazz)
      This method returns the most relevant error message for the given class. The most relevant message is the message which is registered for the class that is closest in the inheritance chain of the given clazz. The order of checks is the following: 1. If there is a registered message for clazz then this one is used 2. We check if there is a registered message for a superclass of clazz 3. We check if there is a registered message for an interface of clazz
      Parameters:
      clazz - the class for which to find an error message
      Returns:
      the most relevant error message, or null if no message could be found
    • hasMessageForType

      public boolean hasMessageForType(Class<?> type)
      Checks, whether an any custom error message is associated with the giving type.
      Parameters:
      type - the type for which to check a error message
      Returns:
      is the giving type associated with any custom error message
    • registerMessage

      public <T> void registerMessage(Class<T> clazz, String message)
      Puts the message for the given clazz.
      Type Parameters:
      T - the type of the objects to associate with the message for
      Parameters:
      clazz - the class for the error message
      message - the error message itself
    • messageByTypes

      public Stream<Map.Entry<Class<?>,String>> messageByTypes()
      Returns a sequence of all type-message pairs which the current holder supplies.
      Returns:
      sequence of field-message pairs