Created
December 15, 2015 17:57
-
-
Save pholser/74891e1c1b966c288b13 to your computer and use it in GitHub Desktop.
Possibly a bug in generics resolution library?
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
import java.lang.reflect.Method; | |
import java.lang.reflect.Type; | |
import java.util.HashMap; | |
import java.util.Map; | |
import org.junit.Test; | |
import ru.vyarus.java.generics.resolver.GenericsResolver; | |
import static org.junit.Assert.*; | |
public class ResolvingGenericParameterTypesTest { | |
public static class Pair<F, S> { | |
public final F first; | |
public final S second; | |
public Pair(F first, S second) { | |
this.first = first; | |
this.second = second; | |
} | |
} | |
public static class PairProperties<F, S> { | |
public void firstAndSecond(F first, S second) { | |
} | |
} | |
public static class SelfPairProperties<F, S extends F> extends PairProperties<F, S> { | |
} | |
public static class IntegerPairProperties extends SelfPairProperties<Integer, Integer> { | |
} | |
@Test public void unresolvedPair() throws Exception { | |
Map<String, Type> expected = new HashMap<>(); | |
expected.put("F", Object.class); | |
expected.put("S", Object.class); | |
Map<String, Type> actual = | |
GenericsResolver.resolve(PairProperties.class) | |
.method(firstAndSecond(PairProperties.class)) | |
.genericsMap(); | |
assertEquals(expected, actual); | |
} | |
@Test public void selfPair() throws Exception { | |
Map<String, Type> expected = new HashMap<>(); | |
expected.put("F", Object.class); | |
expected.put("S", Object.class); | |
Map<String, Type> actual = | |
GenericsResolver.resolve(SelfPairProperties.class) | |
.method(firstAndSecond(SelfPairProperties.class)) | |
.genericsMap(); | |
assertEquals(expected, actual); | |
} | |
@Test public void integerPair() throws Exception { | |
Map<String, Type> expected = new HashMap<>(); | |
expected.put("F", Integer.class); | |
expected.put("S", Integer.class); | |
Map<String, Type> actual = | |
GenericsResolver.resolve(IntegerPairProperties.class) | |
.method(firstAndSecond(IntegerPairProperties.class)) | |
.genericsMap(); | |
assertEquals(expected, actual); | |
} | |
private Method firstAndSecond(Class<?> target) throws Exception { | |
return target.getMethod("firstAndSecond", Object.class, Object.class); | |
} | |
} |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment