/* global QUnit */

import { Camera } from '../../../../src/cameras/Camera.js';

import { Vector3 } from '../../../../src/math/Vector3.js';
import { Object3D } from '../../../../src/core/Object3D.js';

export default QUnit.module( 'Cameras', () => {

	QUnit.module( 'Camera', () => {

		// INHERITANCE
		QUnit.test( 'Extending', ( assert ) => {

			const object = new Camera();
			assert.strictEqual(
				object instanceof Object3D, true,
				'Camera extends from Object3D'
			);

		} );

		// INSTANCING
		QUnit.test( 'Instancing', ( assert ) => {

			const object = new Camera();
			assert.ok( object, 'Can instantiate a Camera.' );

		} );

		// PROPERTIES
		QUnit.test( 'type', ( assert ) => {

			const object = new Camera();
			assert.ok(
				object.type === 'Camera',
				'Camera.type should be Camera'
			);

		} );

		QUnit.todo( 'matrixWorldInverse', ( assert ) => {

			assert.ok( false, 'everything\'s gonna be alright' );

		} );

		QUnit.todo( 'projectionMatrix', ( assert ) => {

			assert.ok( false, 'everything\'s gonna be alright' );

		} );

		QUnit.todo( 'projectionMatrixInverse', ( assert ) => {

			assert.ok( false, 'everything\'s gonna be alright' );

		} );

		// PUBLIC
		QUnit.test( 'isCamera', ( assert ) => {

			const object = new Camera();
			assert.ok(
				object.isCamera,
				'Camera.isCamera should be true'
			);

		} );

		QUnit.todo( 'copy', ( assert ) => {

			assert.ok( false, 'everything\'s gonna be alright' );

		} );

		QUnit.todo( 'getWorldDirection', ( assert ) => {

			assert.ok( false, 'everything\'s gonna be alright' );

		} );

		QUnit.todo( 'updateMatrixWorld', ( assert ) => {

			assert.ok( false, 'everything\'s gonna be alright' );

		} );

		QUnit.todo( 'updateWorldMatrix', ( assert ) => {

			assert.ok( false, 'everything\'s gonna be alright' );

		} );

		QUnit.test( 'clone', ( assert ) => {

			const cam = new Camera();

			// fill the matrices with any nonsense values just to see if they get copied
			cam.matrixWorldInverse.set( 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16 );
			cam.projectionMatrix.set( 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16 );

			const clonedCam = cam.clone();

			// TODO: do not rely equality on object methods
			// TODO: What's append if matrix.equal is wrongly implemented
			// TODO: this MUST be check by assert
			assert.ok( cam.matrixWorldInverse.equals( clonedCam.matrixWorldInverse ), 'matrixWorldInverse is equal' );
			assert.ok( cam.projectionMatrix.equals( clonedCam.projectionMatrix ), 'projectionMatrix is equal' );

		} );

		// OTHERS
		// TODO: this should not be here, Object3D related
		QUnit.test( 'lookAt', ( assert ) => {

			const cam = new Camera();
			cam.lookAt( new Vector3( 0, 1, - 1 ) );

			assert.numEqual( cam.rotation.x * ( 180 / Math.PI ), 45, 'x is equal' );

		} );

	} );

} );