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Add iterator fail-fast tests for LinkedTreeMap.clear() (#2992)

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* Add boundary tests for JsonTreeWriter.endArray() error handling

* Add comprehensive boundary tests for LinkedTreeMap.clear() method

* Update JsonTreeWriterTest.java

* Remove redundant clear map tests from LinkedTreeMapTest

Removed multiple test cases for clearing LinkedTreeMap, including tests for single and multiple entries, null values, and various scenarios.

* Remove blank line in LinkedTreeMapTest

Removed unnecessary blank line in LinkedTreeMapTest.
This commit is contained in:
lmj798
2026-03-10 23:12:15 +08:00
committed by GitHub
parent 36cacf31b7
commit b7d5954918
1 changed files with 31 additions and 0 deletions
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31
gson/src/test/java/com/google/gson/internal/LinkedTreeMapTest.java
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@@ -26,6 +26,7 @@ import java.io.IOException;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.util.Collections;
import java.util.ConcurrentModificationException;
import java.util.Iterator;
import java.util.Map;
import java.util.Map.Entry;
@@ -219,4 +220,34 @@ public final class LinkedTreeMapTest {
Map<String, Integer> deserialized = (Map<String, Integer>) objIn.readObject();
assertThat(deserialized).isEqualTo(Collections.singletonMap("a", 1));
}
@Test
public void testClearInvalidatesExistingIterator() {
LinkedTreeMap<String, String> map = new LinkedTreeMap<>();
map.put("key1", "value1");
map.put("key2", "value2");
map.put("key3", "value3");
Iterator<Map.Entry<String, String>> iterator = map.entrySet().iterator();
assertThat(iterator.hasNext()).isTrue();
map.clear();
assertThrows(ConcurrentModificationException.class, iterator::next);
}
@Test
public void testClearInvalidatesExistingKeySetIterator() {
LinkedTreeMap<String, String> map = new LinkedTreeMap<>();
map.put("key1", "value1");
map.put("key2", "value2");
map.put("key3", "value3");
Iterator<String> iterator = map.keySet().iterator();
assertThat(iterator.hasNext()).isTrue();
map.clear();
assertThrows(ConcurrentModificationException.class, iterator::next);
}
}