1 files changed, 35 insertions, 0 deletions
diff --git a/src/test/java/bjc/data/EitherTest.java b/src/test/java/bjc/data/EitherTest.java
new file mode 100644
index 0000000..ef2d12b
--- /dev/null
+++ b/src/test/java/bjc/data/EitherTest.java
@@ -0,0 +1,35 @@
+package bjc.data;
+
+import static org.junit.Assert.*;
+
+import java.util.*;
+
+import org.junit.*;
+
+@SuppressWarnings("javadoc")
+public class EitherTest
+{
+	private Either<String, String> leftEither;
+	private Either<String, String> rightEither;
+	
+	@Before
+	public void setUp() throws Exception {
+		leftEither  = Either.left("left");
+		rightEither = Either.right("right");
+	}
+
+	@Test
+	public void testIsLeft() {
+		assertTrue("isLeft properly marks left eithers", leftEither.isLeft());
+		assertFalse("isLeft properly marks right eithers", rightEither.isLeft());
+	}
+	
+	@Test
+	public void testGetLeft() {
+		assertEquals("getLeft treats left eithers properly",
+				Optional.of("left"), leftEither.getLeft());
+		assertEquals("getLeft treats right eithers properly",
+				Optional.empty(), rightEither.getLeft());
+	}
+
+}