@Test
public void testPickParts_barelyBigEnoughToUseRecommendedSize() {

    final List<B2PartSpec> specs = partSizes.pickParts(2 * recSize);
    checkSpecs(specs,
            new B2PartSpec(1, 0, recSize),
            new B2PartSpec(2, recSize, recSize)
    );
}