Package com.google.common.collect.testing

Interface TestContainerGenerator<T,​E>

    • Method Summary

      All Methods Instance Methods Abstract Methods 
      Modifier and Type Method Description
      T create​(Object... elements)
      Creates a new container containing the given elements.
      E[] createArray​(int length)
      Helper method to create an array of the appropriate type used by this generator.
      Iterable<E> order​(List<E> insertionOrder)
      Returns the iteration ordering of elements, given the order in which they were added to the container.
      SampleElements<E> samples()
      Returns the sample elements that this generate populates its container with.

    • Method Detail

      • samples

        SampleElements<E> samples()
        Returns the sample elements that this generate populates its container with.

      • create

        T create​(Object... elements)
        Creates a new container containing the given elements. TODO: would be nice to figure out how to use E... or E[] as a parameter type, but this doesn't seem to work because Java creates an array of the erased type.

      • createArray

        E[] createArray​(int length)
        Helper method to create an array of the appropriate type used by this generator. The returned array will contain only nulls.

      • order

        Iterable<E> order​(List<E> insertionOrder)
        Returns the iteration ordering of elements, given the order in which they were added to the container. This method may return the original list unchanged, the original list modified in place, or a different list.

        If the order is non-deterministic, as with HashSet, this method can return its input unmodified. Provided that the test suite is built without CollectionFeature.KNOWN_ORDER, the tests will look only at the returned contents without regard for order.