package eu.mikroskeem.utils.test.reflect;

import eu.mikroskeem.utils.reflect.Reflect;
import org.junit.Assert;
import org.junit.Test;

import java.lang.reflect.Field;
import java.lang.reflect.Method;

public class TestReflect {
    @Test
    public void testGetClass(){
        Assert.assertEquals(Reflect.getClass("java.lang.String"), String.class);
        Assert.assertNotEquals(Reflect.getClass("java.lang.Integer"), String.class);
    }

    @Test
    public void testClassFind(){
        Assert.assertTrue(Reflect.classExists("java.lang.String"));
        Assert.assertFalse(Reflect.classExists("foo.bar.baz.xyz"));
    }

    @Test
    public void testGetMethod(){
        Class reflectClass = Reflect.getClass("eu.mikroskeem.utils.reflect.Reflect");
        Method method = Reflect.getMethod(reflectClass, "getClass", String.class);
        Assert.assertNotNull(method);
        Method invalidMethod = Reflect.getMethod(reflectClass, "getClass", Integer.class);
        Assert.assertNull(invalidMethod);
    }

    @Test
    public void testInvokeMethod(){
        Class reflectClass = Reflect.getClass("eu.mikroskeem.utils.reflect.Reflect");
        Method method = Reflect.getMethod(reflectClass, "getClass", String.class);
        Class<?> resultClazz = (Class)Reflect.invokeMethod(method, null, "java.lang.String");
        Assert.assertEquals(resultClazz, String.class);
    }

    @Test
    public void testGetField(){
        Class reflectTestClass = Reflect.getClass("eu.mikroskeem.utils.test.reflect.ReflectionTestClass");
        Field foobarField = Reflect.getField(reflectTestClass, "FOOBAR");
        Assert.assertNotNull(foobarField);
        Field invalidField = Reflect.getField(reflectTestClass, "ROOMAZ");
        Assert.assertNull(invalidField);
    }

    @Test
    public void testReadField(){
        Class reflectTestClass = Reflect.getClass("eu.mikroskeem.utils.test.reflect.ReflectionTestClass");
        Field foobarField = Reflect.getField(reflectTestClass, "FOOBAR");
        String value = (String)Reflect.readField(foobarField, null);
        Assert.assertEquals(value, "nope");
    }

    @Test
    public void testWriteField(){
        Class reflectTestClass = Reflect.getClass("eu.mikroskeem.utils.test.reflect.ReflectionTestClass");
        Field bazfed = Reflect.getField(reflectTestClass, "BAZFED");
        Reflect.writeField(bazfed, null, "no yeah man :(");
        String value = (String)Reflect.readField(bazfed, null);
        Assert.assertEquals(value, "no yeah man :(");
    }
}