ASMR/src/test/kotlin/net/shadowfacts/cacao/WindowLayoutTests.kt

package net.shadowfacts.cacao

import net.shadowfacts.kiwidsl.dsl
import net.shadowfacts.cacao.geometry.Size
import net.shadowfacts.cacao.view.View
import net.shadowfacts.cacao.viewcontroller.ViewController
import org.junit.jupiter.api.Assertions.*
import org.junit.jupiter.api.BeforeEach
import org.junit.jupiter.api.Test

/**
 * @author shadowfacts
 */
class WindowLayoutTests {

	lateinit var viewController: ViewController
	lateinit var window: Window

	val view: View
		get() = viewController.view

	@BeforeEach
	fun setup() {
		viewController = object: ViewController() {
			override fun loadView() {
				view = View()
			}
		}
		window = Window(viewController)
	}

	@Test
	fun testConstraintToConstant() {
		val view = view.addSubview(View())
		window.solver.dsl {
			view.leftAnchor equalTo 100
			view.rightAnchor equalTo 200

			view.topAnchor equalTo 100
			view.heightAnchor equalTo 200
		}
		window.layout()

		assertEquals(100.0, view.widthAnchor.value)
		assertEquals(300.0, view.bottomAnchor.value)
	}

	@Test
	fun testConstraintToView() {
		val one = view.addSubview(View())
		val two = view.addSubview(View())
		window.solver.dsl {
			one.leftAnchor equalTo 0
			one.widthAnchor equalTo 100

			one.topAnchor equalTo 0
			one.heightAnchor equalTo 200

			two.leftAnchor equalTo one.rightAnchor
			two.rightAnchor equalTo 400

			two.topAnchor equalTo one.bottomAnchor
			two.heightAnchor equalTo one.heightAnchor
		}
		window.layout()

		assertEquals(100.0, two.leftAnchor.value)
		assertEquals(300.0, two.widthAnchor.value)

		assertEquals(200.0, two.topAnchor.value)
		assertEquals(400.0, two.bottomAnchor.value)
	}

	@Test
	fun testIntrinsicContentSize() {
		val view = view.addSubview(View()).apply {
			intrinsicContentSize = Size(100.0, 200.0)
		}
		window.solver.dsl {
			view.leftAnchor equalTo 0
			view.topAnchor equalTo 100
		}
		window.layout()

		assertEquals(100.0, view.widthAnchor.value)
		assertEquals(100.0, view.rightAnchor.value)

		assertEquals(200.0, view.heightAnchor.value)
		assertEquals(300.0, view.bottomAnchor.value)
	}

}