@Test
public void check_varags_only() throws Throwable {
CallSite concat =
MethodInvocationSupport.bootstrap(
lookup(),
"defaultConcat",
methodType(Object.class, Object.class, Object.class, Object.class, Object.class),
0);
VarargsChecking receiver = varargsChecking();
Object result = concat.dynamicInvoker().invokeWithArguments(receiver, "a", "b", "c");
assertThat(result, notNullValue());
assertThat(result, instanceOf(String.class));
assertThat((String) result, is("a-b-c"));
concat =
MethodInvocationSupport.bootstrap(
lookup(), "defaultConcat", methodType(Object.class, Object.class, Object.class), 0);
result = concat.dynamicInvoker().invokeWithArguments(receiver, new String[] {"a", "b", "c"});
assertThat(result, notNullValue());
assertThat(result, instanceOf(String.class));
assertThat((String) result, is("a-b-c"));
concat =
MethodInvocationSupport.bootstrap(
lookup(), "defaultConcat", methodType(Object.class, Object.class, Object.class), 0);
receiver = varargsChecking();
assertThat((String) concat.dynamicInvoker().invokeWithArguments(receiver, "a"), is("a"));
concat =
MethodInvocationSupport.bootstrap(
lookup(), "defaultConcat", methodType(Object.class, Object.class), 0);
receiver = varargsChecking();
assertThat((String) concat.dynamicInvoker().invokeWithArguments(receiver), is(""));
}
@Test(expectedExceptions = NoSuchMethodError.class)
public void check_bogus() throws Throwable {
CallSite bogus =
MethodInvocationSupport.bootstrap(
lookup(), "bogus", methodType(Object.class, Object.class), 0);
bogus.dynamicInvoker().invokeWithArguments(julien());
}
@Test
public void dynamic_object_smoke_tests() throws Throwable {
DynamicObject a = new DynamicObject();
DynamicObject b = new DynamicObject();
CallSite plopper =
MethodInvocationSupport.bootstrap(
lookup(), "plop", methodType(Object.class, Object.class, Object.class), 1);
MethodHandle invoker = plopper.dynamicInvoker();
invoker.invoke(a, 1);
assertThat(a.get("plop"), is((Object) 1));
invoker.invoke(b, 1);
assertThat(b.get("plop"), is((Object) 1));
invoker.invoke(a, 10);
assertThat(a.get("plop"), is((Object) 10));
assertThat(b.get("plop"), is((Object) 1));
assertThat(invoker.invoke(new Ploper(), 666), is((Object) "666"));
b.undefine("plop");
Object result = invoker.invoke(b, 1);
assertThat(result, is((Object) b));
assertThat(b.get("plop"), is((Object) 1));
}
@Test(expectedExceptions = NullPointerException.class)
public void not_nullsafe_invocation() throws Throwable {
CallSite toString =
MethodInvocationSupport.bootstrap(
lookup(), "toString", methodType(Object.class, Object.class), 0);
toString.dynamicInvoker().invoke(null);
}
@Test
public void check_set_name() throws Throwable {
CallSite setName =
MethodInvocationSupport.bootstrap(
lookup(), "setName", methodType(Object.class, Object.class, Object.class), 0);
Person julien = julien();
setName.dynamicInvoker().invokeWithArguments(julien, "Julien Ponge");
assertThat(julien.name, is("Julien Ponge"));
}
@Test
public void check_boolean_property_style_getter() throws Throwable {
CallSite isGoloCommitter =
MethodInvocationSupport.bootstrap(
lookup(), "goloCommitter", methodType(Object.class, Object.class), 0);
Person julien = julien();
boolean goloCommitter = (boolean) isGoloCommitter.dynamicInvoker().invokeWithArguments(julien);
assertThat(goloCommitter, is(true));
}
@Test
public void check_equals() throws Throwable {
CallSite equals =
MethodInvocationSupport.bootstrap(
lookup(), "equals", methodType(Object.class, Object.class, Object.class), 0);
Person julien = julien();
Boolean result = (Boolean) equals.dynamicInvoker().invokeWithArguments(julien, julien);
assertThat(result, is(true));
}
@Test
public void check_field_read() throws Throwable {
CallSite email =
MethodInvocationSupport.bootstrap(
lookup(), "email", methodType(Object.class, Object.class), 0);
String result = (String) email.dynamicInvoker().invokeWithArguments(julien());
assertThat(result, notNullValue());
assertThat(result, is("*****@*****.**"));
}
@Test
public void check_property_style_getter_on_computed_field() throws Throwable {
CallSite isRockStar =
MethodInvocationSupport.bootstrap(
lookup(), "rockStar", methodType(Object.class, Object.class), 0);
Person julien = julien();
boolean rockstar = (boolean) isRockStar.dynamicInvoker().invoke(julien);
assertThat(rockstar, is(true));
}
@Test
public void check_property_style_getter() throws Throwable {
CallSite getName =
MethodInvocationSupport.bootstrap(
lookup(), "name", methodType(Object.class, Object.class), 0);
Person julien = julien();
String name = (String) getName.dynamicInvoker().invokeWithArguments(julien);
assertThat(name, is("Julien"));
}
@Test
public void check_property_style_setter_with_return_value() throws Throwable {
CallSite setScore =
MethodInvocationSupport.bootstrap(
lookup(), "score", methodType(Object.class, Object.class, Object.class), 0);
Person julien = julien();
int halfScore = (int) setScore.dynamicInvoker().invokeWithArguments(julien, 100);
assertThat(julien.score, is(100));
assertThat(halfScore, is(50));
}
@Test
public void check_boolean_property_style_setter() throws Throwable {
CallSite setGoloCommitter =
MethodInvocationSupport.bootstrap(
lookup(), "goloCommitter", methodType(Object.class, Object.class, Object.class), 0);
Person julien = julien();
Person instance = (Person) setGoloCommitter.dynamicInvoker().invokeWithArguments(julien, false);
assertThat(julien.goloCommitter, is(false));
assertThat(instance, is(julien));
}
@Test
public void check_to_string() throws Throwable {
CallSite toString =
MethodInvocationSupport.bootstrap(
lookup(), "toString", methodType(Object.class, Object.class), 0);
String result = (String) toString.dynamicInvoker().invokeWithArguments(julien());
assertThat(result, notNullValue());
assertThat(
result, is("Person{name='Julien', email='*****@*****.**', goloCommitter=true}"));
}
@Test(
expectedExceptions = NoSuchMethodError.class,
expectedExceptionsMessageRegExp = ".*Person::notAccessible.*")
public void check_property_style_resolution_fail_when_no_getter_setter_found() throws Throwable {
CallSite getNoAccessible =
MethodInvocationSupport.bootstrap(
lookup(), "notAccessible", methodType(Object.class, Object.class), 0);
Person julien = julien();
getNoAccessible.dynamicInvoker().invokeWithArguments(julien);
}
@Test
public void check_field_setter() throws Throwable {
CallSite property =
MethodInvocationSupport.bootstrap(
lookup(), "property", methodType(Object.class, Object.class, Object.class), 0);
FieldAccessors receiver = new FieldAccessors();
receiver.property = "undefined";
property.dynamicInvoker().invokeWithArguments(receiver, "foo");
assertThat((String) receiver.property, is("foo"));
}
@Test
public void nullsafe_invocation() throws Throwable {
CallSite toString =
MethodInvocationSupport.bootstrap(
lookup(), "toString", methodType(Object.class, Object.class), 1);
MethodHandle invoker = toString.dynamicInvoker();
assertThat(invoker.invoke(null), nullValue());
assertThat((String) invoker.invoke("a"), is("a"));
assertThat((String) invoker.invoke("b"), is("b"));
assertThat(invoker.invoke(null), nullValue());
}
@Test
public void check_primitive_argument_allowance() throws Throwable {
List<String> list = Arrays.asList("a", "b", "c");
CallSite get =
MethodInvocationSupport.bootstrap(
lookup(), "get", methodType(Object.class, Object.class, Object.class), 0);
MethodHandle handle = get.dynamicInvoker();
assertThat(((String) handle.invokeWithArguments(list, 0)), is("a"));
assertThat(((String) handle.invokeWithArguments(list, 1)), is("b"));
assertThat(((String) handle.invokeWithArguments(list, 2)), is("c"));
}
@Test
public void check_field_getter() throws Throwable {
CallSite property =
MethodInvocationSupport.bootstrap(
lookup(), "property", methodType(Object.class, Object.class), 0);
FieldAccessors receiver = new FieldAccessors();
receiver.property = "foo";
Object result = property.dynamicInvoker().invokeWithArguments(receiver);
assertThat(result, notNullValue());
assertThat(result, instanceOf(String.class));
assertThat((String) result, is("foo"));
}
@Test
public void nullsafe_megamorphic_invocation() throws Throwable {
CallSite toString =
MethodInvocationSupport.bootstrap(
lookup(), "toString", methodType(Object.class, Object.class), 1);
MethodInvocationSupport.InlineCache pic = (MethodInvocationSupport.InlineCache) toString;
pic.depth = MethodInvocationSupport.InlineCache.MEGAMORPHIC_THRESHOLD + 10;
MethodHandle invoker = toString.dynamicInvoker();
assertThat(invoker.invoke(null), nullValue());
assertThat((String) invoker.invoke("a"), is("a"));
assertThat((String) invoker.invoke(1), is("1"));
assertThat((String) invoker.invoke(1L), is("1"));
assertThat((String) invoker.invoke(Arrays.asList()), is("[]"));
assertThat((String) invoker.invoke(new Object()), startsWith("java.lang.Object"));
assertThat(invoker.invoke(null), nullValue());
}
@Test
public void check_many_to_string() throws Throwable {
CallSite toString =
MethodInvocationSupport.bootstrap(
lookup(), "toString", methodType(Object.class, Object.class), 0);
MethodHandle toStringMH = toString.dynamicInvoker();
for (int i = 0; i < 5; i++) {
String result = (String) toStringMH.invokeWithArguments(julien());
assertThat(
result,
is("Person{name='Julien', email='*****@*****.**', goloCommitter=true}"));
result = (String) toStringMH.invokeWithArguments("foo");
assertThat(result, is("foo"));
result = (String) toStringMH.invokeWithArguments(666);
assertThat(result, is("666"));
result = (String) toStringMH.invokeWithArguments(666L);
assertThat(result, is("666"));
result = (String) toStringMH.invokeWithArguments("foo");
assertThat(result, is("foo"));
result = (String) toStringMH.invokeWithArguments(new BigInteger("1234"));
assertThat(result, is("1234"));
result =
(String)
toStringMH.invokeWithArguments(
new Object() {
@Override
public String toString() {
return "Damn";
}
});
assertThat(result, is("Damn"));
result =
(String)
toStringMH.invokeWithArguments(
new Object() {
@Override
public String toString() {
return "Plop";
}
});
assertThat(result, is("Plop"));
result =
(String)
toStringMH.invokeWithArguments(
new Object() {
@Override
public String toString() {
return "Hey!";
}
});
assertThat(result, is("Hey!"));
}
}