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Fix CollectionToCollectionConverterTests

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Closes gh-37254

Signed-off-by: Hyunwoo Jung <hyunwoojung@kakao.com>
This commit is contained in:
Hyunwoo Jung
2026-09-14 14:41:06 +02:00
committed by GitHub
parent 9d1156f1fd
commit 01a23e32b5
1 changed files with 11 additions and 12 deletions
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spring-core/src/test/java/org/springframework/core/convert/support/CollectionToCollectionConverterTests.java
+11 -12
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@@ -163,30 +163,29 @@ class CollectionToCollectionConverterTests {
@Test
void convertEmptyVector_shouldReturnEmptyArrayList() {
Vector<String> vector = new Vector<>();
vector.add("Element");
testCollectionConversionToArrayList(vector);
CollectionToCollectionConverter converter = new CollectionToCollectionConverter(new GenericConversionService());
Object convertedValue = converter.convert(
vector, TypeDescriptor.forObject(vector), TypeDescriptor.valueOf(ArrayList.class));
assertThat(convertedValue).isInstanceOf(ArrayList.class);
assertThat(convertedValue).asInstanceOf(LIST).isEmpty();
}
@Test
void convertNonEmptyVector_shouldReturnNonEmptyArrayList() {
Vector<String> vector = new Vector<>();
vector.add("Element");
testCollectionConversionToArrayList(vector);
CollectionToCollectionConverter converter = new CollectionToCollectionConverter(new GenericConversionService());
Object convertedValue = converter.convert(
vector, TypeDescriptor.forObject(vector), TypeDescriptor.valueOf(ArrayList.class));
assertThat(convertedValue).isInstanceOf(ArrayList.class);
assertThat(convertedValue).asInstanceOf(LIST).isNotEmpty();
}
@Test
void collectionsEmptyList() throws Exception {
CollectionToCollectionConverter converter = new CollectionToCollectionConverter(new GenericConversionService());
TypeDescriptor type = new TypeDescriptor(getClass().getField("list"));
converter.convert(list, type, TypeDescriptor.valueOf(Class.forName("java.util.Collections$EmptyList")));
}
@SuppressWarnings("rawtypes")
private void testCollectionConversionToArrayList(Collection<String> source) {
CollectionToCollectionConverter converter = new CollectionToCollectionConverter(new GenericConversionService());
Object convertedValue = converter.convert(
source, TypeDescriptor.forObject(source), TypeDescriptor.forObject(new ArrayList()));
assertThat(convertedValue).asInstanceOf(LIST).hasSameSizeAs(source);
assertThat(converter.convert(list, type, TypeDescriptor.valueOf(Class.forName("java.util.Collections$EmptyList")))).isSameAs(list);
}
@Test