package sample; import static org.hamcrest.CoreMatchers.is; import static org.junit.Assert.assertThat; import java.util.ArrayList; import org.junit.Before; import org.junit.Test; public class ArrayListTest { private ArrayList sut; @Before public void setUp() { sut = new ArrayList(); } @Test public void testInitialSize() { assertThat(sut.size(), is(0)); } @Test public void testAdd() throws Exception { sut.add(new Object()); assertThat(sut.size(), is(1)); } @Test public void testIndexRemove() throws Exception { sut.add(new Object()); sut.remove(0); assertThat(sut.size(), is(0)); } }