package de.hysky.skyblocker.utils;

import org.junit.jupiter.api.Assertions;
import org.junit.jupiter.api.Test;

public class InstancedUtilsTest {

	@Test
	void testSameInstanceEqual() {
		Vector3i vec1 = new Vector3i(8, 8, 8);
		
		Assertions.assertEquals(vec1, vec1);
	}
	
	@Test
	void testSameFieldValuesEqual() {
		Vector3i vec1 = new Vector3i(8, 8, 8);
		Vector3i vec2 = new Vector3i(8, 8, 8);
		
		Assertions.assertEquals(vec1, vec2);
	}
	
	@Test
	void testDifferentFieldValuesEqual() {
		Vector3i vec1 = new Vector3i(8, 8, 8);
		Vector3i vec2 = new Vector3i(-8, -8, -8);
		
		Assertions.assertNotEquals(vec1, vec2);
	}
	
	@Test
	void testHashCodeOfEqualFieldValues() {
		Vector3i vec1 = new Vector3i(8, 8, 8);
		Vector3i vec2 = new Vector3i(8, 8, 8);
		
		Assertions.assertEquals(vec1.hashCode(), vec2.hashCode());
	}
	
	@Test
	void testHashCodeOfDifferentFieldValues() {
		Vector3i vec1 = new Vector3i(8, 8, 8);
		Vector3i vec2 = new Vector3i(-8, -8, -8);
		
		Assertions.assertNotEquals(vec1.hashCode(), vec2.hashCode());
	}
	
	@Test
	void testToString() {
		Vector3i vec1 = new Vector3i(8, 8, 8);
		
		Assertions.assertEquals(vec1.toString(), "Vector3i[x=8, y=8, z=8]");
	}
	
	@SuppressWarnings("unused")
	private static class Vector3i {
		final int x;
		final int y;
		final int z;
		
		Vector3i(int x, int y, int z) {
			this.x = x;
			this.y = y;
			this.z = z;
		}
		
		@Override
		public boolean equals(Object o) {
			try {
				return (boolean) InstancedUtils.equals(getClass()).invokeExact(this, o);
			} catch (Throwable ignored) {
				return super.equals(o);
			}
		}
		
		@Override
		public int hashCode() {
			try {
				return (int) InstancedUtils.hashCode(getClass()).invokeExact(this);
			} catch (Throwable ignored) {
				return System.identityHashCode(this);
			}
		}
		
		@Override
		public String toString() {
			try {
				return (String) InstancedUtils.toString(getClass()).invokeExact(this);
			} catch (Throwable ignored) {
				return super.toString();
			}
		}
	}
}