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TypeUtils detects variations of ParameterizedType/GenericArrayType assignability as well

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This commit is contained in:
Juergen Hoeller
2009-02-13 12:17:48 +00:00
parent d8651a88ec
commit fe462916b1
2 changed files with 80 additions and 12 deletions
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43
org.springframework.core/src/test/java/org/springframework/util/TypeUtilsTests.java
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@@ -1,5 +1,5 @@
/*
* Copyright 2002-2007 the original author or authors.
* Copyright 2002-2009 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
@@ -22,12 +22,14 @@ import java.util.HashSet;
import java.util.LinkedList;
import java.util.List;
import junit.framework.TestCase;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertTrue;
import org.junit.Test;
/**
* @author Juergen Hoeller
*/
public class TypeUtilsTests extends TestCase {
public class TypeUtilsTests {
public static List<Object> objects;
@@ -35,7 +37,13 @@ public class TypeUtilsTests extends TestCase {
public static List<String> strings;
public void testClasses() {
public static List<Number>[] array;
public static List<? extends Number>[] openArray;
@Test
public void withClasses() {
assertTrue(TypeUtils.isAssignable(Object.class, Object.class));
assertTrue(TypeUtils.isAssignable(Object.class, String.class));
assertFalse(TypeUtils.isAssignable(String.class, Object.class));
@@ -45,10 +53,20 @@ public class TypeUtilsTests extends TestCase {
assertFalse(TypeUtils.isAssignable(List.class, HashSet.class));
}
public void testParameterizedTypes() throws Exception {
@Test
public void withParameterizedTypes() throws Exception {
Type objectsType = getClass().getField("objects").getGenericType();
Type openObjectsType = getClass().getField("openObjects").getGenericType();
Type stringsType = getClass().getField("strings").getGenericType();
assertTrue(TypeUtils.isAssignable(Object.class, objectsType));
assertTrue(TypeUtils.isAssignable(Object.class, openObjectsType));
assertTrue(TypeUtils.isAssignable(Object.class, stringsType));
assertTrue(TypeUtils.isAssignable(List.class, objectsType));
assertTrue(TypeUtils.isAssignable(List.class, openObjectsType));
assertTrue(TypeUtils.isAssignable(List.class, stringsType));
assertTrue(TypeUtils.isAssignable(objectsType, List.class));
assertTrue(TypeUtils.isAssignable(openObjectsType, List.class));
assertTrue(TypeUtils.isAssignable(stringsType, List.class));
assertTrue(TypeUtils.isAssignable(objectsType, objectsType));
assertTrue(TypeUtils.isAssignable(openObjectsType, openObjectsType));
assertTrue(TypeUtils.isAssignable(stringsType, stringsType));
@@ -58,4 +76,19 @@ public class TypeUtilsTests extends TestCase {
assertFalse(TypeUtils.isAssignable(objectsType, stringsType));
}
@Test
public void withGenericArrayTypes() throws Exception {
Type arrayType = getClass().getField("array").getGenericType();
Type openArrayType = getClass().getField("openArray").getGenericType();
assertTrue(TypeUtils.isAssignable(Object.class, arrayType));
assertTrue(TypeUtils.isAssignable(Object.class, openArrayType));
assertTrue(TypeUtils.isAssignable(List[].class, arrayType));
assertTrue(TypeUtils.isAssignable(List[].class, openArrayType));
assertTrue(TypeUtils.isAssignable(arrayType, List[].class));
assertTrue(TypeUtils.isAssignable(openArrayType, List[].class));
assertTrue(TypeUtils.isAssignable(arrayType, arrayType));
assertTrue(TypeUtils.isAssignable(openArrayType, openArrayType));
assertTrue(TypeUtils.isAssignable(openArrayType, arrayType));
}
}