<dependency>
<groupId>com.google.guava</groupId>
<artifactId>guava</artifactId>
<version>30.1-jre</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.easytesting</groupId>
<artifactId>fest-testng-2.0-SNAPSHOT</artifactId>
<version>RELEASE</version>
<scope>test</scope>
</dependency>
@Test
public void testImmutableList() {
ImmutableList<String> list = ImmutableList.of("apple", "banana", "orange");
assertThat(list).contains("apple").doesNotContain("grape").hasSize(3);
}
@Test
public void testImmutableMap() {
ImmutableMap<Integer, String> map = ImmutableMap.of(1, "one", 2, "two", 3, "three");
assertThat(map).containsEntry(1, "one").doesNotContainKey(4).containsValue("two");
}
@Test
public void testOptional() {
Optional<String> optional = Optional.of("value");
assertThat(optional).contains("value").isPresent();
}
