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import java.lang.invoke.CallSite;
import java.lang.invoke.ConstantCallSite;
import java.lang.invoke.MethodHandle;
import java.lang.invoke.MethodHandles;
import java.lang.invoke.MethodType;
import java.lang.constant.ClassDesc;
import java.lang.constant.DirectMethodHandleDesc;
import java.lang.constant.DynamicCallSiteDesc;
import java.lang.constant.MethodHandleDesc;
import java.lang.constant.MethodTypeDesc;
import org.testng.annotations.Test;
import static java.lang.constant.ConstantDescs.*;
import static org.testng.Assert .assertEquals;
import static org.testng.Assert .assertNotEquals;
/**
* @test
* @compile IndyDescTest.java
* @run testng IndyDescTest
* @summary unit tests for java.lang.constant.IndyDescTest
*/
@Test
public class IndyDescTest {
public static CallSite bootstrap(MethodHandles.Lookup lookup, String name, MethodType type,
Object... args) {
if (args.length == 0)
return new ConstantCallSite(MethodHandles.constant(String.class , "Foo" ));
else
return new ConstantCallSite(MethodHandles.constant(String.class , (String) args[0]));
}
public void testIndyDesc() throws Throwable {
ClassDesc c = ClassDesc.of("IndyDescTest" );
MethodTypeDesc mt = MethodTypeDesc.of(CD_CallSite, CD_MethodHandles_Lookup, CD_String, CD_MethodType, CD_Object.arrayType());
DirectMethodHandleDesc mh = MethodHandleDesc.ofMethod(DirectMethodHandleDesc.Kind.STATIC , c, "bootstrap" , mt);
DynamicCallSiteDesc csd = DynamicCallSiteDesc.of(mh, "wooga" , MethodTypeDesc.of(CD_String));
CallSite cs = csd.resolveCallSiteDesc(MethodHandles.lookup());
MethodHandle target = cs.getTarget();
assertEquals("Foo" , target.invoke());
assertEquals("wooga" , csd.invocationName());
mh = ofCallsiteBootstrap(c, "bootstrap" , CD_CallSite, CD_Object.arrayType());
csd = DynamicCallSiteDesc.of(mh, "wooga" , MethodTypeDesc.of(CD_String));
cs = csd.resolveCallSiteDesc(MethodHandles.lookup());
target = cs.getTarget();
assertEquals("Foo" , target.invoke());
assertEquals("wooga" , csd.invocationName());
DynamicCallSiteDesc csd2 = DynamicCallSiteDesc.of(mh, "foo" , MethodTypeDesc.of(CD_String), "Bar" );
CallSite cs2 = csd2.resolveCallSiteDesc(MethodHandles.lookup());
MethodHandle target2 = cs2.getTarget();
assertEquals("Bar" , target2.invoke());
assertEquals("foo" , csd2.invocationName());
DynamicCallSiteDesc csd3 = DynamicCallSiteDesc.of(mh, MethodTypeDesc.of(CD_String));
CallSite cs3 = csd.resolveCallSiteDesc(MethodHandles.lookup());
MethodHandle target3 = cs3.getTarget();
assertEquals("Foo" , target3.invoke());
assertEquals("_" , csd3.invocationName());
DynamicCallSiteDesc csd4 = DynamicCallSiteDesc.of(mh, "foo" , MethodTypeDesc.of(CD_String)).withArgs("Bar" );
CallSite cs4 = csd4.resolveCallSiteDesc(MethodHandles.lookup());
MethodHandle target4 = cs4.getTarget();
assertEquals("Bar" , target4.invoke());
DynamicCallSiteDesc csd5 = DynamicCallSiteDesc.of(mh, MethodTypeDesc.of(CD_String, CD_String))
.withNameAndType("foo" , MethodTypeDesc.of(CD_String)).withArgs("Bar" );
CallSite cs5 = csd5.resolveCallSiteDesc(MethodHandles.lookup());
MethodHandle target5 = cs5.getTarget();
assertEquals("Bar" , target5.invoke());
assertEquals("foo" , csd5.invocationName());
}
public void testEqualsHashToString() throws Throwable {
ClassDesc c = ClassDesc.of("IndyDescTest" );
MethodTypeDesc mt = MethodTypeDesc.of(CD_CallSite, CD_MethodHandles_Lookup, CD_String, CD_MethodType, CD_Object.arrayType());
DirectMethodHandleDesc mh = MethodHandleDesc.ofMethod(DirectMethodHandleDesc.Kind.STATIC , c, "bootstrap" , mt);
DynamicCallSiteDesc csd1 = DynamicCallSiteDesc.of(mh, "wooga" , MethodTypeDesc.of(CD_String));
DynamicCallSiteDesc csd2 = DynamicCallSiteDesc.of(mh, "wooga" , MethodTypeDesc.of(CD_String));
DynamicCallSiteDesc csd3 = DynamicCallSiteDesc.of(mh, "foo" , MethodTypeDesc.of(CD_String));
assertEquals(csd1, csd2);
assertEquals(csd1.hashCode(), csd2.hashCode());
assertNotEquals(csd1, csd3);
assertNotEquals(csd1.hashCode(), csd3.hashCode());
assertEquals(csd1.toString(), "DynamicCallSiteDesc[IndyDescTest::bootstrap(wooga/):()String]" );
}
@Test(expectedExceptions = IllegalArgumentException.class )
public void testEmptyInvocationName() throws Throwable {
ClassDesc c = ClassDesc.of("IndyDescTest" );
MethodTypeDesc mt = MethodTypeDesc.of(CD_CallSite, CD_MethodHandles_Lookup, CD_String, CD_MethodType, CD_Object.arrayType());
DirectMethodHandleDesc mh = MethodHandleDesc.ofMethod(DirectMethodHandleDesc.Kind.STATIC , c, "bootstrap" , mt);
DynamicCallSiteDesc csd1 = DynamicCallSiteDesc.of(mh, "" , MethodTypeDesc.of(CD_String));
}
}
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