extern crate rucaja;

use rucaja::{Jvm, JvmAttachment, JvmClass, JvmMethod, JvmObjectArray, JvmObject, jvalue_from_jobject, jvalue_from_jint};

#[test]
fn test_java_arrays() {

    let jvm = Jvm::new(&[
        "-Xcheck:jni"
    ]);

    // Attach the current native thread to the JVM.
    let jvm_attachment = JvmAttachment::new(jvm.jvm());

    let jvm_integer_class = JvmClass::get_class(&jvm_attachment, "java/lang/Integer").unwrap();

    let integer_constructor = JvmMethod::get_constructor(
        &jvm_attachment,
        &jvm_integer_class,
        "(I)V"
    ).unwrap();

    let integer_jvm_ptr = JvmMethod::call_constructor(
        &jvm_attachment,
        &jvm_integer_class,
        &integer_constructor,
        vec![
            jvalue_from_jint(42)
        ].as_ptr()
    );

    let integer_object = JvmObject::from_jvm_ptr(&jvm_attachment, integer_jvm_ptr).unwrap();

    let jvm_arrays_class = JvmClass::get_class(&jvm_attachment, "java/util/Arrays").unwrap();

    let binary_search_method = JvmMethod::get_static_method(
        &jvm_attachment,
        &jvm_arrays_class,
        "binarySearch",
        "([Ljava/lang/Object;Ljava/lang/Object;)I"
    ).unwrap();

    let array_length = 10;

    let integer_array_object = JvmObjectArray::new(
        &jvm_attachment,
        array_length,
        &jvm_integer_class,
        &integer_object
    ).unwrap();

    let result = JvmMethod::call_static_int_method(
        &jvm_attachment,
        &jvm_arrays_class,
        &binary_search_method,
        vec![
            jvalue_from_jobject(integer_array_object.jvm_ptr()),
            jvalue_from_jobject(integer_object.jvm_ptr())
        ].as_ptr()
    );

    assert!( 0 <= result && result < array_length);
}