@Test
public void shouldReturnProperSize() {
// given
SmallMap<String, Integer> smallTestMap = smallTestMap();
assertThat(smallTestMap.size()).isEqualTo(3);
// when
smallTestMap.put("123", 1234);
// then
assertThat(smallTestMap.size()).isEqualTo(4);
}
@Test
public void shouldRemoveElement() {
// given
SmallMap<String, Integer> newSmallMap = smallTestMap();
int size = newSmallMap.size();
// when
newSmallMap.remove("abc");
// then
assertThat(newSmallMap.get("def")).isEqualTo(456);
assertThat(newSmallMap.get("xyz")).isEqualTo(123);
assertThat(newSmallMap.get("abc")).isNull();
assertThat(newSmallMap.size()).isEqualTo(size - 1);
}
@Test
public void shouldDelegateToCreatedMapWhenBig() {
// given
SmallMap<String, Integer> map2 = smallTestMap();
Map<String, Integer> mapMock = createMapMock();
SmallMap<String, Integer> smallMap = createSmallMap(mapMock);
fillAndVerify(mapMock, smallMap);
// when
smallMap.put("abc", 123);
Mockito.verify(mapMock).put("abc", 123);
// when
smallMap.containsKey("abc");
Mockito.verify(mapMock).containsKey("abc");
// when
smallMap.containsValue(123);
Mockito.verify(mapMock).containsValue(123);
// when
smallMap.entrySet();
Mockito.verify(mapMock).entrySet();
// when
smallMap.values();
Mockito.verify(mapMock).values();
// when
smallMap.keySet();
Mockito.verify(mapMock).keySet();
// when
smallMap.get("abc");
Mockito.verify(mapMock).get("abc");
// when
smallMap.isEmpty();
Mockito.verify(mapMock).isEmpty();
// when
smallMap.size();
Mockito.verify(mapMock).size();
// when
smallMap.putAll(map2);
Mockito.verify(mapMock).putAll(map2);
// when
smallMap.remove("abc");
Mockito.verify(mapMock).remove("abc");
// then
Mockito.verifyNoMoreInteractions(mapMock);
}
@Test
public void shouldClearMap() {
// given
SmallMap<String, Integer> smallTestMap = smallTestMap();
assertThat(smallTestMap.isEmpty()).isFalse();
// when
smallTestMap.clear();
// then
assertThat(smallTestMap.isEmpty()).isTrue();
assertThat(smallTestMap.size()).isZero();
}
@Test
public void emptyMapShouldBeEmpty() {
// given
SmallMap<Object, Object> newSmallMap = SmallMap.newSmallMap();
// when
boolean empty = newSmallMap.isEmpty();
int size = newSmallMap.size();
// then
assertThat(empty).isTrue();
assertThat(size).isZero();
}