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Unit test for identifying type variable argument 

See gh-27748
This commit is contained in:
Juergen Hoeller 2021-12-14 16:46:26 +01:00
parent d7b9270672
commit 0802581aff
1 changed files with 22 additions and 2 deletions
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24
spring-core/src/test/java/org/springframework/core/ResolvableTypeTests.java
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@ -1,5 +1,5 @@
/* /*
* Copyright 2002-2020 the original author or authors. * Copyright 2002-2021 the original author or authors.
* *
* Licensed under the Apache License, Version 2.0 (the "License"); * Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License. * you may not use this file except in compliance with the License.
@ -1159,6 +1159,20 @@ class ResolvableTypeTests {
assertThatResolvableType(complex4).isNotAssignableFrom(complex3); assertThatResolvableType(complex4).isNotAssignableFrom(complex3);
} }
@Test
void identifyTypeVariable() throws Exception {
Method method = ClassArguments.class.getMethod("typedArgumentFirst", Class.class, Class.class, Class.class);
ResolvableType returnType = ResolvableType.forMethodReturnType(method, ClassArguments.class);
ResolvableType arg0 = ResolvableType.forMethodParameter(method, 0, ClassArguments.class);
ResolvableType arg1 = ResolvableType.forMethodParameter(method, 1, ClassArguments.class);
ResolvableType arg2 = ResolvableType.forMethodParameter(method, 2, ClassArguments.class);
assertThat(returnType.getType().equals(arg0.as(Class.class).getGeneric(0).getType())).isTrue();
assertThat(returnType.getType().equals(arg1.as(Class.class).getGeneric(0).getType())).isFalse();
assertThat(returnType.getType().equals(arg2.as(Class.class).getGeneric(0).getType())).isFalse();
}
@Test @Test
void hashCodeAndEquals() throws Exception { void hashCodeAndEquals() throws Exception {
ResolvableType forClass = ResolvableType.forClass(List.class); ResolvableType forClass = ResolvableType.forClass(List.class);
@ -1427,6 +1441,10 @@ class ResolvableTypeTests {
} }
interface TypedMethods extends Methods<String> {
}
static class AssignmentBase<O, C, S> { static class AssignmentBase<O, C, S> {
public O o; public O o;
@ -1479,7 +1497,9 @@ class ResolvableTypeTests {
} }
interface TypedMethods extends Methods<String> { interface ClassArguments {
<T> T typedArgumentFirst(Class<T> arg0, Class<?> arg1, Class<Object> arg2);
} }