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cpovirkGoogle Java Core Libraries
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Use assertThrows even in GWT/J2CL/J2KT-compatible code, common.collect.testing edition.
(continuing the path started in cl/675634517) RELNOTES=n/a PiperOrigin-RevId: 687014605
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android/guava-testlib/src/com/google/common/collect/testing/MapInterfaceTest.java

Lines changed: 36 additions & 140 deletions
Original file line numberDiff line numberDiff line change
@@ -16,6 +16,7 @@
1616

1717
package com.google.common.collect.testing;
1818

19+
import static com.google.common.collect.testing.ReflectionFreeAssertThrows.assertThrows;
1920
import static java.util.Collections.singleton;
2021

2122
import com.google.common.annotations.GwtCompatible;
@@ -280,11 +281,7 @@ public void testClear() {
280281
map.clear();
281282
assertTrue(map.isEmpty());
282283
} else {
283-
try {
284-
map.clear();
285-
fail("Expected UnsupportedOperationException.");
286-
} catch (UnsupportedOperationException expected) {
287-
}
284+
assertThrows(UnsupportedOperationException.class, () -> map.clear());
288285
}
289286
assertInvariants(map);
290287
}
@@ -479,18 +476,10 @@ public void testEntrySetIteratorRemove() {
479476
// iterator.remove().
480477
assertFalse(entrySet.contains(entryCopy));
481478
assertInvariants(map);
482-
try {
483-
iterator.remove();
484-
fail("Expected IllegalStateException.");
485-
} catch (IllegalStateException expected) {
486-
}
479+
assertThrows(IllegalStateException.class, () -> iterator.remove());
487480
} else {
488481
iterator.next();
489-
try {
490-
iterator.remove();
491-
fail("Expected UnsupportedOperationException.");
492-
} catch (UnsupportedOperationException expected) {
493-
}
482+
assertThrows(UnsupportedOperationException.class, () -> iterator.remove());
494483
}
495484
assertInvariants(map);
496485
}
@@ -510,11 +499,8 @@ public void testEntrySetRemove() {
510499
assertTrue(didRemove);
511500
assertEquals(initialSize - 1, map.size());
512501
} else {
513-
try {
514-
entrySet.remove(entrySet.iterator().next());
515-
fail("Expected UnsupportedOperationException.");
516-
} catch (UnsupportedOperationException expected) {
517-
}
502+
assertThrows(
503+
UnsupportedOperationException.class, () -> entrySet.remove(entrySet.iterator().next()));
518504
}
519505
assertInvariants(map);
520506
}
@@ -661,11 +647,7 @@ public void testEntrySetRemoveAll() {
661647
// have undefined behavior after entrySet.removeAll(entriesToRemove),
662648
assertFalse(entrySet.contains(entryToRemoveCopy));
663649
} else {
664-
try {
665-
entrySet.removeAll(entriesToRemove);
666-
fail("Expected UnsupportedOperationException.");
667-
} catch (UnsupportedOperationException expected) {
668-
}
650+
assertThrows(UnsupportedOperationException.class, () -> entrySet.removeAll(entriesToRemove));
669651
}
670652
assertInvariants(map);
671653
}
@@ -680,11 +662,7 @@ public void testEntrySetRemoveAllNullFromEmpty() {
680662

681663
Set<Entry<K, V>> entrySet = map.entrySet();
682664
if (supportsRemove) {
683-
try {
684-
entrySet.removeAll(null);
685-
fail("Expected NullPointerException.");
686-
} catch (NullPointerException expected) {
687-
}
665+
assertThrows(NullPointerException.class, () -> entrySet.removeAll(null));
688666
} else {
689667
try {
690668
entrySet.removeAll(null);
@@ -715,11 +693,7 @@ public void testEntrySetRetainAll() {
715693
assertTrue(entrySet.contains(entry));
716694
}
717695
} else {
718-
try {
719-
entrySet.retainAll(entriesToRetain);
720-
fail("Expected UnsupportedOperationException.");
721-
} catch (UnsupportedOperationException expected) {
722-
}
696+
assertThrows(UnsupportedOperationException.class, () -> entrySet.retainAll(entriesToRetain));
723697
}
724698
assertInvariants(map);
725699
}
@@ -763,11 +737,7 @@ public void testEntrySetClear() {
763737
entrySet.clear();
764738
assertTrue(entrySet.isEmpty());
765739
} else {
766-
try {
767-
entrySet.clear();
768-
fail("Expected UnsupportedOperationException.");
769-
} catch (UnsupportedOperationException expected) {
770-
}
740+
assertThrows(UnsupportedOperationException.class, () -> entrySet.clear());
771741
}
772742
assertInvariants(map);
773743
}
@@ -1002,11 +972,7 @@ public void testPutNewKey() {
1002972
assertEquals(initialSize + 1, map.size());
1003973
assertNull(oldValue);
1004974
} else {
1005-
try {
1006-
map.put(keyToPut, valueToPut);
1007-
fail("Expected UnsupportedOperationException.");
1008-
} catch (UnsupportedOperationException expected) {
1009-
}
975+
assertThrows(UnsupportedOperationException.class, () -> map.put(keyToPut, valueToPut));
1010976
}
1011977
assertInvariants(map);
1012978
}
@@ -1030,11 +996,7 @@ public void testPutExistingKey() {
1030996
assertTrue(map.containsValue(valueToPut));
1031997
assertEquals(initialSize, map.size());
1032998
} else {
1033-
try {
1034-
map.put(keyToPut, valueToPut);
1035-
fail("Expected UnsupportedOperationException.");
1036-
} catch (UnsupportedOperationException expected) {
1037-
}
999+
assertThrows(UnsupportedOperationException.class, () -> map.put(keyToPut, valueToPut));
10381000
}
10391001
assertInvariants(map);
10401002
}
@@ -1058,11 +1020,7 @@ public void testPutNullKey() {
10581020
assertTrue(map.containsKey(null));
10591021
assertTrue(map.containsValue(valueToPut));
10601022
} else {
1061-
try {
1062-
map.put(null, valueToPut);
1063-
fail("Expected RuntimeException");
1064-
} catch (RuntimeException expected) {
1065-
}
1023+
assertThrows(RuntimeException.class, () -> map.put(null, valueToPut));
10661024
}
10671025
assertInvariants(map);
10681026
}
@@ -1088,11 +1046,7 @@ public void testPutNullValue() {
10881046
assertTrue(map.containsValue(null));
10891047
assertEquals(initialSize + 1, map.size());
10901048
} else {
1091-
try {
1092-
map.put(keyToPut, null);
1093-
fail("Expected RuntimeException");
1094-
} catch (RuntimeException expected) {
1095-
}
1049+
assertThrows(RuntimeException.class, () -> map.put(keyToPut, null));
10961050
}
10971051
assertInvariants(map);
10981052
}
@@ -1119,11 +1073,7 @@ public void testPutNullValueForExistingKey() {
11191073
assertTrue(map.containsValue(null));
11201074
assertEquals(initialSize, map.size());
11211075
} else {
1122-
try {
1123-
map.put(keyToPut, null);
1124-
fail("Expected RuntimeException");
1125-
} catch (RuntimeException expected) {
1126-
}
1076+
assertThrows(RuntimeException.class, () -> map.put(keyToPut, null));
11271077
}
11281078
assertInvariants(map);
11291079
}
@@ -1147,11 +1097,7 @@ public void testPutAllNewKey() {
11471097
assertTrue(map.containsValue(valueToPut));
11481098
assertEquals(initialSize + 1, map.size());
11491099
} else {
1150-
try {
1151-
map.putAll(mapToPut);
1152-
fail("Expected UnsupportedOperationException.");
1153-
} catch (UnsupportedOperationException expected) {
1154-
}
1100+
assertThrows(UnsupportedOperationException.class, () -> map.putAll(mapToPut));
11551101
}
11561102
assertInvariants(map);
11571103
}
@@ -1175,11 +1121,7 @@ public void testPutAllExistingKey() {
11751121
assertTrue(map.containsKey(keyToPut));
11761122
assertTrue(map.containsValue(valueToPut));
11771123
} else {
1178-
try {
1179-
map.putAll(mapToPut);
1180-
fail("Expected UnsupportedOperationException.");
1181-
} catch (UnsupportedOperationException expected) {
1182-
}
1124+
assertThrows(UnsupportedOperationException.class, () -> map.putAll(mapToPut));
11831125
}
11841126
assertEquals(initialSize, map.size());
11851127
assertInvariants(map);
@@ -1202,11 +1144,7 @@ public void testRemove() {
12021144
assertFalse(map.containsKey(keyToRemove));
12031145
assertEquals(initialSize - 1, map.size());
12041146
} else {
1205-
try {
1206-
map.remove(keyToRemove);
1207-
fail("Expected UnsupportedOperationException.");
1208-
} catch (UnsupportedOperationException expected) {
1209-
}
1147+
assertThrows(UnsupportedOperationException.class, () -> map.remove(keyToRemove));
12101148
}
12111149
assertInvariants(map);
12121150
}
@@ -1225,11 +1163,7 @@ public void testRemoveMissingKey() {
12251163
assertNull(map.remove(keyToRemove));
12261164
assertEquals(initialSize, map.size());
12271165
} else {
1228-
try {
1229-
map.remove(keyToRemove);
1230-
fail("Expected UnsupportedOperationException.");
1231-
} catch (UnsupportedOperationException expected) {
1232-
}
1166+
assertThrows(UnsupportedOperationException.class, () -> map.remove(keyToRemove));
12331167
}
12341168
assertInvariants(map);
12351169
}
@@ -1254,11 +1188,7 @@ public void testKeySetRemove() {
12541188
assertEquals(initialSize - 1, map.size());
12551189
assertFalse(map.containsKey(key));
12561190
} else {
1257-
try {
1258-
keys.remove(key);
1259-
fail("Expected UnsupportedOperationException.");
1260-
} catch (UnsupportedOperationException expected) {
1261-
}
1191+
assertThrows(UnsupportedOperationException.class, () -> keys.remove(key));
12621192
}
12631193
assertInvariants(map);
12641194
}
@@ -1279,11 +1209,8 @@ public void testKeySetRemoveAll() {
12791209
assertEquals(initialSize - 1, map.size());
12801210
assertFalse(map.containsKey(key));
12811211
} else {
1282-
try {
1283-
keys.removeAll(Collections.singleton(key));
1284-
fail("Expected UnsupportedOperationException.");
1285-
} catch (UnsupportedOperationException expected) {
1286-
}
1212+
assertThrows(
1213+
UnsupportedOperationException.class, () -> keys.removeAll(Collections.singleton(key)));
12871214
}
12881215
assertInvariants(map);
12891216
}
@@ -1303,11 +1230,8 @@ public void testKeySetRetainAll() {
13031230
assertEquals(1, map.size());
13041231
assertTrue(map.containsKey(key));
13051232
} else {
1306-
try {
1307-
keys.retainAll(Collections.singleton(key));
1308-
fail("Expected UnsupportedOperationException.");
1309-
} catch (UnsupportedOperationException expected) {
1310-
}
1233+
assertThrows(
1234+
UnsupportedOperationException.class, () -> keys.retainAll(Collections.singleton(key)));
13111235
}
13121236
assertInvariants(map);
13131237
}
@@ -1325,11 +1249,7 @@ public void testKeySetClear() {
13251249
keySet.clear();
13261250
assertTrue(keySet.isEmpty());
13271251
} else {
1328-
try {
1329-
keySet.clear();
1330-
fail("Expected UnsupportedOperationException.");
1331-
} catch (UnsupportedOperationException expected) {
1332-
}
1252+
assertThrows(UnsupportedOperationException.class, () -> keySet.clear());
13331253
}
13341254
assertInvariants(map);
13351255
}
@@ -1344,11 +1264,7 @@ public void testKeySetRemoveAllNullFromEmpty() {
13441264

13451265
Set<K> keySet = map.keySet();
13461266
if (supportsRemove) {
1347-
try {
1348-
keySet.removeAll(null);
1349-
fail("Expected NullPointerException.");
1350-
} catch (NullPointerException expected) {
1351-
}
1267+
assertThrows(NullPointerException.class, () -> keySet.removeAll(null));
13521268
} else {
13531269
try {
13541270
keySet.removeAll(null);
@@ -1427,18 +1343,10 @@ public void testValuesIteratorRemove() {
14271343
// removed value, because the underlying map can have multiple mappings
14281344
// to the same value.)
14291345
assertInvariants(map);
1430-
try {
1431-
iterator.remove();
1432-
fail("Expected IllegalStateException.");
1433-
} catch (IllegalStateException expected) {
1434-
}
1346+
assertThrows(IllegalStateException.class, () -> iterator.remove());
14351347
} else {
14361348
iterator.next();
1437-
try {
1438-
iterator.remove();
1439-
fail("Expected UnsupportedOperationException.");
1440-
} catch (UnsupportedOperationException expected) {
1441-
}
1349+
assertThrows(UnsupportedOperationException.class, () -> iterator.remove());
14421350
}
14431351
assertInvariants(map);
14441352
}
@@ -1460,11 +1368,9 @@ public void testValuesRemove() {
14601368
// removed value, because the underlying map can have multiple mappings
14611369
// to the same value.)
14621370
} else {
1463-
try {
1464-
valueCollection.remove(valueCollection.iterator().next());
1465-
fail("Expected UnsupportedOperationException.");
1466-
} catch (UnsupportedOperationException expected) {
1467-
}
1371+
assertThrows(
1372+
UnsupportedOperationException.class,
1373+
() -> valueCollection.remove(valueCollection.iterator().next()));
14681374
}
14691375
assertInvariants(map);
14701376
}
@@ -1513,11 +1419,8 @@ public void testValuesRemoveAll() {
15131419
assertFalse(valuesToRemove.contains(value));
15141420
}
15151421
} else {
1516-
try {
1517-
valueCollection.removeAll(valuesToRemove);
1518-
fail("Expected UnsupportedOperationException.");
1519-
} catch (UnsupportedOperationException expected) {
1520-
}
1422+
assertThrows(
1423+
UnsupportedOperationException.class, () -> valueCollection.removeAll(valuesToRemove));
15211424
}
15221425
assertInvariants(map);
15231426
}
@@ -1567,11 +1470,8 @@ public void testValuesRetainAll() {
15671470
assertTrue(valuesToRetain.contains(value));
15681471
}
15691472
} else {
1570-
try {
1571-
valueCollection.retainAll(valuesToRetain);
1572-
fail("Expected UnsupportedOperationException.");
1573-
} catch (UnsupportedOperationException expected) {
1574-
}
1473+
assertThrows(
1474+
UnsupportedOperationException.class, () -> valueCollection.retainAll(valuesToRetain));
15751475
}
15761476
assertInvariants(map);
15771477
}
@@ -1615,11 +1515,7 @@ public void testValuesClear() {
16151515
valueCollection.clear();
16161516
assertTrue(valueCollection.isEmpty());
16171517
} else {
1618-
try {
1619-
valueCollection.clear();
1620-
fail("Expected UnsupportedOperationException.");
1621-
} catch (UnsupportedOperationException expected) {
1622-
}
1518+
assertThrows(UnsupportedOperationException.class, () -> valueCollection.clear());
16231519
}
16241520
assertInvariants(map);
16251521
}

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