Add Color unit tests

src/test/kotlin/net/shadowfacts/shadowui/util/ColorTest.kt

@@ -0,0 +1,25 @@
+package net.shadowfacts.shadowui.util
+
+import org.junit.jupiter.api.Assertions.*
+import org.junit.jupiter.api.Test
+
+/**
+ * @author shadowfacts
+ */
+class ColorTest {
+
+	@Test
+	fun fromRGB() {
+		val color = Color(0x123456)
+		assertEquals(0x12, color.red)
+		assertEquals(0x34, color.green)
+		assertEquals(0x56, color.blue)
+	}
+
+	@Test
+	fun toARGB() {
+		val color = Color(red = 0x12, green = 0x34, blue = 0x56, alpha = 0x78)
+		assertEquals(0x78123456, color.argb)
+	}
+
+}