Add Rect unit tests

src/main/kotlin/net/shadowfacts/shadowui/geometry/Point.kt

@@ -3,7 +3,7 @@ package net.shadowfacts.shadowui.geometry
 /**
  * @author shadowfacts
  */
-class Point(val x: Double, val y: Double) {
+data class Point(val x: Double, val y: Double) {
 
 	constructor(x: Int, y: Int): this(x.toDouble(), y.toDouble())
 

src/test/kotlin/net/shadowfacts/shadowui/geometry/RectTest.kt

@@ -0,0 +1,39 @@
+package net.shadowfacts.shadowui.geometry
+
+import org.junit.jupiter.api.Assertions.*
+import org.junit.jupiter.api.Test
+
+/**
+ * @author shadowfacts
+ */
+class RectTest {
+
+	@Test
+	fun testTrailingEdges() {
+		val rect = Rect(25.0, 50.0, 100.0, 200.0)
+		assertEquals(125.0, rect.right)
+		assertEquals(250.0, rect.bottom)
+	}
+
+	@Test
+	fun testCenter() {
+		val rect = Rect(25.0, 50.0, 100.0, 200.0)
+		assertEquals(75.0, rect.midX)
+		assertEquals(150.0, rect.midY)
+
+	}
+
+	@Test
+	fun testPoints() {
+		val rect = Rect(25.0, 50.0, 100.0, 200.0)
+		assertEquals(Point(25.0, 50.0), rect.origin)
+		assertEquals(Point(75.0, 150.0), rect.center)
+	}
+
+	@Test
+	fun testSize() {
+		val rect = Rect(25.0, 50.0, 100.0, 200.0)
+		assertEquals(Size(100.0, 200.0), rect.size)
+	}
+
+}