What tests would you create to check the behavior of the List interface?

To test the List interface in Java, you should create the following types of tests:

• Add element tests: verify that elements are added correctly and the list size increases.
• Remove element tests: removal by index and by object, verify the correctness of size and content.
• Access by index tests: get element, check for exceptions when out of bounds.
• Modify element tests: set new value by index.
• Search tests: check methods contains, indexOf, lastIndexOf.
• Iteration tests: verify correct traversal of elements via iterator.
• Boundary tests: work with an empty list, adding null (if supported).

Example of a simple test using JUnit:

@Test
public void testAddAndGetSize() {
    List<String> list = new ArrayList<>();
    assertEquals(0, list.size());
    list.add("test");
    assertEquals(1, list.size());
    assertEquals("test", list.get(0));
}

This helps ensure the List implementation behaves correctly.