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TypeDescriptor properly narrows ResolvableType for non-typed collection elements

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Issue: SPR-14971
This commit is contained in:
Juergen Hoeller
2016-12-12 22:28:48 +01:00
parent 8b5ee4ef91
commit aef1460a64
2 changed files with 28 additions and 3 deletions
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24
spring-core/src/test/java/org/springframework/core/convert/converter/DefaultConversionServiceTests.java
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@@ -628,13 +628,35 @@ public class DefaultConversionServiceTests {
assertEquals(3, result[2]);
}
@Test
public void convertListOfNonStringifiable() {
List<Object> list = Arrays.asList(new TestEntity(1L), new TestEntity(2L));
assertTrue(conversionService.canConvert(list.getClass(), String.class));
try {
conversionService.convert(list, String.class);
}
catch (ConversionFailedException ex) {
assertTrue(ex.getMessage().contains(list.getClass().getName()));
assertTrue(ex.getCause() instanceof ConverterNotFoundException);
assertTrue(ex.getCause().getMessage().contains(TestEntity.class.getName()));
}
}
@Test
public void convertListOfStringToString() {
List<String> list = Arrays.asList("Foo", "Bar");
assertTrue(conversionService.canConvert(list.getClass(), String.class));
String result = conversionService.convert(list, String.class);
assertEquals("Foo,Bar", result);
}
@Test
public void convertListOfListToString() {
List<String> list1 = Arrays.asList("Foo", "Bar");
List<String> list2 = Arrays.asList("Baz", "Boop");
List<List<String>> list = Arrays.asList(list1, list2);
assertTrue(conversionService.canConvert(list.getClass(), String.class));
String result = conversionService.convert(list, String.class);
assertNotNull(result);
assertEquals("Foo,Bar,Baz,Boop", result);
}