}
	if err := DB.AutoMigrate(&CompositeKeyProduct{}); err != nil {
		t.Fatalf("failed to migrate, got error %v", err)
	}

	prod := &CompositeKeyProduct{
		LanguageCode: 56,
		Code:         "Code56",
		Name:         "ProductName56",
	}
	if err := DB.Create(&prod).Error; err != nil {
		t.Fatalf("failed to create, got error %v", err)
	}

	newProd := &CompositeKeyProduct{}

    NonComparableSuperClass node5 = new NonComparableSuperClass(5);
    NonComparableSuperClass node7 = new NonComparableSuperClass(7);

    graph.addNode(node1);
    graph.addNode(node7);
    graph.addNode(node5);
    graph.addNode(node3);

    assertThat(graph.nodeOrder().comparator()).isEqualTo(comparator);
    assertThat(graph.nodes()).containsExactly(node1, node3, node5, node7).inOrder();
  }

  @Test