Fix : applied git ignore

.gitignore

@@ -29,4 +29,3 @@ proguard/
 # Captures
 captures/
 out/
-/.gradle/

Either/src/main/kotlin/Either.kt

@@ -0,0 +1,35 @@
+package main.kotlin
+
+/**
+ * Created by Lazysoul on 2016. 12. 14..
+ */
+sealed class Either<L : Any, R : Any> {
+
+    var isLeft: Boolean = false
+    var isRight: Boolean = false
+
+    var left: Left<L, Nothing>? = null
+    var right: Right<Nothing, R>? = null
+    abstract fun get(): Any
+
+    class Left<L : Any, R : Any>(val value: L) : Either<L, R>() {
+        init {
+            isLeft = true
+        }
+
+        override fun get(): L {
+            return value
+        }
+
+    }
+
+    class Right<L : Any, R : Any>(val value: R) : Either<L, R>() {
+        init {
+            isRight = true
+        }
+
+        override fun get(): R {
+            return value
+        }
+    }
+}

Either/src/test/kotlin/EitherTest.kt

@@ -0,0 +1,29 @@
+package test.kotlin
+
+import main.kotlin.Either
+import main.kotlin.Either.Left
+import main.kotlin.Either.Right
+import org.junit.Assert.assertEquals
+import org.junit.Test
+
+/**
+ * Created by Lazysoul on 2016. 12. 14..
+ */
+class EitherTest {
+
+    @Test fun leftTest() {
+        val left: Either<String, Int> = Left("test")
+        assertEquals("test", left.get())
+        assertEquals(true, left.isLeft)
+        assertEquals(false, left.isRight)
+        assertEquals(null, left.right?.get())
+    }
+
+    @Test fun rightTest() {
+        val right: Either<String, Int> = Right(6)
+        assertEquals(6, right.get())
+        assertEquals(false, right.isLeft)
+        assertEquals(true, right.isRight)
+        assertEquals(null, right.left?.get())
+    }
+}

build.gradle

@@ -18,6 +18,13 @@ repositories {
     mavenCentral()
 }
 
+sourceSets {
+    main.kotlin.srcDirs += 'src/main/kotlin'
+    test.kotlin.srcDirs += 'src/test/kotlin'
+}
+
 dependencies {
     compile "org.jetbrains.kotlin:kotlin-stdlib:$kotlin_version"
+
+    testCompile 'junit:junit:4.12'
 }