/*
* Copyright 2012-2014 Institut National des Sciences Appliquées de Lyon (INSA-Lyon)
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package fr.insalyon.citi.golo.runtime;
import org.testng.annotations.Test;
import java.lang.invoke.CallSite;
import java.lang.invoke.MethodHandle;
import java.util.Arrays;
import java.util.List;
import static java.lang.invoke.MethodHandles.lookup;
import static java.lang.invoke.MethodType.methodType;
import static org.hamcrest.MatcherAssert.assertThat;
import static org.hamcrest.Matchers.instanceOf;
import static org.hamcrest.Matchers.is;
public class ClosureReferenceSupportTest {
private final String KLASS = "fr.insalyon.citi.golo.runtime.ClosureReferenceSupportTest";
static Object to_list(Object foo, Object bar) {
return Arrays.asList(foo, bar);
}
static Object concat(Object... args) {
StringBuilder result = new StringBuilder();
for (Object arg : args) {
result.append(arg);
}
return result.toString();
}
@Test
public void check_bootstrap() throws Throwable {
CallSite callSite = ClosureReferenceSupport.bootstrap(lookup(), "to_list", methodType(MethodHandle.class), KLASS, 2, 0);
assertThat(callSite.type(), is(methodType(MethodHandle.class)));
Object result = callSite.dynamicInvoker().invoke();
assertThat(result, instanceOf(MethodHandle.class));
MethodHandle handle = (MethodHandle) result;
assertThat(handle.type(), is(methodType(Object.class, Object.class, Object.class)));
result = handle.invoke("foo", "bar");
assertThat(result, instanceOf(List.class));
assertThat(((List) result).size(), is(2));
}
@Test
public void check_bootstrap_varargs() throws Throwable {
CallSite callSite = ClosureReferenceSupport.bootstrap(lookup(), "concat", methodType(MethodHandle.class), KLASS, 0, 1);
assertThat(callSite.type(), is(methodType(MethodHandle.class)));
Object result = callSite.dynamicInvoker().invoke();
assertThat(result, instanceOf(MethodHandle.class));
MethodHandle handle = (MethodHandle) result;
assertThat(handle.type(), is(methodType(Object.class, Object[].class)));
result = handle.invoke("foo", "bar");
assertThat(result, instanceOf(String.class));
assertThat((String) result, is("foobar"));
}
}