16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 */
23
24 /* @test
25 * @bug 8195649
26 * @summary Basic functional test of Optional
27 * @author Mike Duigou
28 * @build ObscureException
29 * @run testng Basic
30 */
31
32 import java.util.List;
33 import java.util.NoSuchElementException;
34 import java.util.Optional;
35 import java.util.concurrent.atomic.AtomicBoolean;
36
37 import static java.util.stream.Collectors.toList;
38
39 import static org.testng.Assert.*;
40 import org.testng.annotations.Test;
41
42 public class Basic {
43
44 /**
45 * Checks a block of assertions over an empty Optional.
46 */
47 void checkEmpty(Optional<String> empty) {
48 assertTrue(empty.equals(Optional.empty()));
49 assertTrue(Optional.empty().equals(empty));
50 assertFalse(empty.equals(Optional.of("unexpected")));
51 assertFalse(Optional.of("unexpected").equals(empty));
52 assertFalse(empty.equals("unexpected"));
53
54 assertFalse(empty.isPresent());
55 assertEquals(empty.hashCode(), 0);
56 assertEquals(empty.orElse("x"), "x");
57 assertEquals(empty.orElseGet(() -> "y"), "y");
58
59 assertThrows(NoSuchElementException.class, () -> empty.get());
60 assertThrows(NoSuchElementException.class, () -> empty.orElseThrow());
61 assertThrows(ObscureException.class, () -> empty.orElseThrow(ObscureException::new));
62
63 var b = new AtomicBoolean();
64 empty.ifPresent(s -> b.set(true));
65 assertFalse(b.get());
66
67 var b1 = new AtomicBoolean(false);
68 var b2 = new AtomicBoolean(false);
69 empty.ifPresentOrElse(s -> b1.set(true), () -> b2.set(true));
70 assertFalse(b1.get());
71 assertTrue(b2.get());
72
73 assertEquals(empty.toString(), "Optional.empty");
74 }
75
76 /**
77 * Checks a block of assertions over an Optional that is expected to
78 * have a particular value present.
79 */
80 void checkPresent(Optional<String> opt, String expected) {
81 assertFalse(opt.equals(Optional.empty()));
82 assertFalse(Optional.empty().equals(opt));
83 assertTrue(opt.equals(Optional.of(expected)));
84 assertTrue(Optional.of(expected).equals(opt));
85 assertFalse(opt.equals(Optional.of("unexpected")));
86 assertFalse(Optional.of("unexpected").equals(opt));
87 assertFalse(opt.equals("unexpected"));
88
89 assertTrue(opt.isPresent());
90 assertEquals(opt.hashCode(), expected.hashCode());
91 assertEquals(opt.orElse("unexpected"), expected);
92 assertEquals(opt.orElseGet(() -> "unexpected"), expected);
93
94 assertEquals(opt.get(), expected);
95 assertEquals(opt.orElseThrow(), expected);
96 assertEquals(opt.orElseThrow(ObscureException::new), expected);
97
98 var b = new AtomicBoolean(false);
99 opt.ifPresent(s -> b.set(true));
100 assertTrue(b.get());
101
102 var b1 = new AtomicBoolean(false);
103 var b2 = new AtomicBoolean(false);
104 opt.ifPresentOrElse(s -> b1.set(true), () -> b2.set(true));
105 assertTrue(b1.get());
106 assertFalse(b2.get());
107
108 assertEquals(opt.toString(), "Optional[" + expected + "]");
109 }
|
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 */
23
24 /* @test
25 * @bug 8195649
26 * @summary Basic functional test of Optional
27 * @author Mike Duigou
28 * @build ObscureException
29 * @run testng Basic
30 */
31
32 import java.util.List;
33 import java.util.NoSuchElementException;
34 import java.util.Optional;
35 import java.util.concurrent.atomic.AtomicBoolean;
36 import java.util.function.Predicate;
37
38 import static java.util.stream.Collectors.toList;
39
40 import static org.testng.Assert.*;
41 import org.testng.annotations.Test;
42
43 public class Basic {
44
45 /**
46 * Checks a block of assertions over an empty Optional.
47 */
48 void checkEmpty(Optional<String> empty) {
49 assertTrue(empty.equals(Optional.empty()));
50 assertTrue(Optional.empty().equals(empty));
51 assertFalse(empty.equals(Optional.of("unexpected")));
52 assertFalse(Optional.of("unexpected").equals(empty));
53 assertFalse(empty.equals("unexpected"));
54
55 assertFalse(empty.isPresent());
56 assertTrue(empty.isEmpty());
57 assertEquals(empty.hashCode(), 0);
58 assertEquals(empty.orElse("x"), "x");
59 assertEquals(empty.orElseGet(() -> "y"), "y");
60
61 assertThrows(NoSuchElementException.class, () -> empty.get());
62 assertThrows(NoSuchElementException.class, () -> empty.orElseThrow());
63 assertThrows(ObscureException.class, () -> empty.orElseThrow(ObscureException::new));
64
65 var b = new AtomicBoolean();
66 empty.ifPresent(s -> b.set(true));
67 assertFalse(b.get());
68
69 var b1 = new AtomicBoolean(false);
70 var b2 = new AtomicBoolean(false);
71 empty.ifPresentOrElse(s -> b1.set(true), () -> b2.set(true));
72 assertFalse(b1.get());
73 assertTrue(b2.get());
74
75 assertEquals(empty.toString(), "Optional.empty");
76 }
77
78 /**
79 * Checks a block of assertions over an Optional that is expected to
80 * have a particular value present.
81 */
82 void checkPresent(Optional<String> opt, String expected) {
83 assertFalse(opt.equals(Optional.empty()));
84 assertFalse(Optional.empty().equals(opt));
85 assertTrue(opt.equals(Optional.of(expected)));
86 assertTrue(Optional.of(expected).equals(opt));
87 assertFalse(opt.equals(Optional.of("unexpected")));
88 assertFalse(Optional.of("unexpected").equals(opt));
89 assertFalse(opt.equals("unexpected"));
90
91 assertTrue(opt.isPresent());
92 assertFalse(opt.isEmpty());
93 assertEquals(opt.hashCode(), expected.hashCode());
94 assertEquals(opt.orElse("unexpected"), expected);
95 assertEquals(opt.orElseGet(() -> "unexpected"), expected);
96
97 assertEquals(opt.get(), expected);
98 assertEquals(opt.orElseThrow(), expected);
99 assertEquals(opt.orElseThrow(ObscureException::new), expected);
100
101 var b = new AtomicBoolean(false);
102 opt.ifPresent(s -> b.set(true));
103 assertTrue(b.get());
104
105 var b1 = new AtomicBoolean(false);
106 var b2 = new AtomicBoolean(false);
107 opt.ifPresentOrElse(s -> b1.set(true), () -> b2.set(true));
108 assertTrue(b1.get());
109 assertFalse(b2.get());
110
111 assertEquals(opt.toString(), "Optional[" + expected + "]");
112 }
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