From 7998bc7761cc45723b75c323cc625fde3549072b Mon Sep 17 00:00:00 2001
From: Marco Cetica <email@marcocetica.com>
Date: Tue, 17 Sep 2024 11:00:21 +0200
Subject: [PATCH] Added match method and unit tests

---
 pom.xml                                       |  8 +++++++
 src/main/java/com/ceticamarco/Left.java       | 18 ----------------
 src/main/java/com/ceticamarco/Right.java      | 10 ---------
 .../ceticamarco/{ => lambdatonic}/Either.java |  2 +-
 .../com/ceticamarco/lambdatonic/Left.java     | 19 +++++++++++++++++
 .../com/ceticamarco/lambdatonic/Right.java    | 19 +++++++++++++++++
 .../ceticamarco/lambdatonic/LeftTests.java    | 21 +++++++++++++++++++
 .../ceticamarco/lambdatonic/RightTests.java   | 21 +++++++++++++++++++
 8 files changed, 89 insertions(+), 29 deletions(-)
 delete mode 100644 src/main/java/com/ceticamarco/Left.java
 delete mode 100644 src/main/java/com/ceticamarco/Right.java
 rename src/main/java/com/ceticamarco/{ => lambdatonic}/Either.java (93%)
 create mode 100644 src/main/java/com/ceticamarco/lambdatonic/Left.java
 create mode 100644 src/main/java/com/ceticamarco/lambdatonic/Right.java
 create mode 100644 src/test/java/com/ceticamarco/lambdatonic/LeftTests.java
 create mode 100644 src/test/java/com/ceticamarco/lambdatonic/RightTests.java

diff --git a/pom.xml b/pom.xml
index edf9b6b..ed086bf 100644
--- a/pom.xml
+++ b/pom.xml
@@ -13,5 +13,13 @@
         <maven.compiler.target>22</maven.compiler.target>
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
     </properties>
+    <dependencies>
+        <dependency>
+            <groupId>junit</groupId>
+            <artifactId>junit</artifactId>
+            <version>RELEASE</version>
+            <scope>test</scope>
+        </dependency>
+    </dependencies>
 
 </project>
\ No newline at end of file
diff --git a/src/main/java/com/ceticamarco/Left.java b/src/main/java/com/ceticamarco/Left.java
deleted file mode 100644
index 51ec3d7..0000000
--- a/src/main/java/com/ceticamarco/Left.java
+++ /dev/null
@@ -1,18 +0,0 @@
-package com.ceticamarco;
-
-import java.util.function.Function;
-
-/**
- * <p>
- *
- * </p>
- * @param value
- * @param <L>
- * @param <R>
- */
-public record Left<L, R>(L value) implements Either<L, R> {
-    @Override
-    public <T> T match(Function<L, T> onLeft, Function<R, T> onRight) {
-        return onLeft.apply(this.value);
-    }
-}
\ No newline at end of file
diff --git a/src/main/java/com/ceticamarco/Right.java b/src/main/java/com/ceticamarco/Right.java
deleted file mode 100644
index 6aee839..0000000
--- a/src/main/java/com/ceticamarco/Right.java
+++ /dev/null
@@ -1,10 +0,0 @@
-package com.ceticamarco;
-
-import java.util.function.Function;
-
-public record Right<L, R>(R value) implements Either<L, R> {
-    @Override
-    public <T> T match(Function<L, T> onLeft, Function<R, T> onRight) {
-        return onRight.apply(this.value);
-    }
-}
\ No newline at end of file
diff --git a/src/main/java/com/ceticamarco/Either.java b/src/main/java/com/ceticamarco/lambdatonic/Either.java
similarity index 93%
rename from src/main/java/com/ceticamarco/Either.java
rename to src/main/java/com/ceticamarco/lambdatonic/Either.java
index 565e7ad..a1df4f7 100644
--- a/src/main/java/com/ceticamarco/Either.java
+++ b/src/main/java/com/ceticamarco/lambdatonic/Either.java
@@ -1,4 +1,4 @@
-package com.ceticamarco;
+package com.ceticamarco.lambdatonic;
 
 import java.util.function.Function;
 
diff --git a/src/main/java/com/ceticamarco/lambdatonic/Left.java b/src/main/java/com/ceticamarco/lambdatonic/Left.java
new file mode 100644
index 0000000..72eba3b
--- /dev/null
+++ b/src/main/java/com/ceticamarco/lambdatonic/Left.java
@@ -0,0 +1,19 @@
+package com.ceticamarco.lambdatonic;
+
+import java.util.function.Function;
+
+/**
+ * <p>
+ *      Subtype of the <i>Either</i> protocol.
+ *      This class sets the left value of the Either type
+ * </p>
+ * @param value The left value of the <i>Either</i> type
+ * @param <L> The left type, representing the error value
+ * @param <R> The right type, representing the actual value
+ */
+public record Left<L, R>(L value) implements Either<L, R> {
+    @Override
+    public <T> T match(Function<L, T> onLeft, Function<R, T> onRight) {
+        return onLeft.apply(this.value);
+    }
+}
\ No newline at end of file
diff --git a/src/main/java/com/ceticamarco/lambdatonic/Right.java b/src/main/java/com/ceticamarco/lambdatonic/Right.java
new file mode 100644
index 0000000..288f07d
--- /dev/null
+++ b/src/main/java/com/ceticamarco/lambdatonic/Right.java
@@ -0,0 +1,19 @@
+package com.ceticamarco.lambdatonic;
+
+import java.util.function.Function;
+
+/**
+ * <p>
+ *     Subtype of the <i>Either</i> protocol.
+ *     This class sets the right value of the either type
+ * </p>
+ * @param value The right value of the <i>Either</i> type
+ * @param <L> The left type, representing the error value
+ * @param <R> The right type, representing the actual value
+ */
+public record Right<L, R>(R value) implements Either<L, R> {
+    @Override
+    public <T> T match(Function<L, T> onLeft, Function<R, T> onRight) {
+        return onRight.apply(this.value);
+    }
+}
\ No newline at end of file
diff --git a/src/test/java/com/ceticamarco/lambdatonic/LeftTests.java b/src/test/java/com/ceticamarco/lambdatonic/LeftTests.java
new file mode 100644
index 0000000..64afce1
--- /dev/null
+++ b/src/test/java/com/ceticamarco/lambdatonic/LeftTests.java
@@ -0,0 +1,21 @@
+package com.ceticamarco.lambdatonic;
+
+import org.junit.Test;
+
+import static org.junit.Assert.assertEquals;
+
+public class LeftTests {
+    @Test
+    public void testMatchLeft() {
+        Either<Integer, String> resEither = new Left<>(19);
+
+        var actual = resEither.match(
+            errorCode  -> "Error code: " + errorCode.toString(),
+            successMsg -> successMsg
+        );
+
+        var expected = "Error code: 19";
+
+        assertEquals(expected, actual);
+    }
+}
diff --git a/src/test/java/com/ceticamarco/lambdatonic/RightTests.java b/src/test/java/com/ceticamarco/lambdatonic/RightTests.java
new file mode 100644
index 0000000..743fcb0
--- /dev/null
+++ b/src/test/java/com/ceticamarco/lambdatonic/RightTests.java
@@ -0,0 +1,21 @@
+package com.ceticamarco.lambdatonic;
+
+import org.junit.Test;
+
+import static org.junit.Assert.assertEquals;
+
+public class RightTests {
+    @Test
+    public void testMatchRight() {
+        Either<Integer, String> resEither = new Right<>("Query executed successfully");
+
+        var actual = resEither.match(
+                errorCode  -> "Error code: " + errorCode.toString(),
+                successMsg -> successMsg
+        );
+
+        var expected = "Query executed successfully";
+
+        assertEquals(expected, actual);
+    }
+}