From 3a078d7c9ccf958bc82f3551e84a0e3db67de94d Mon Sep 17 00:00:00 2001
From: "thibault.faure" <thibault.faure@mimacom.com>
Date: Tue, 6 Jun 2023 23:02:22 +0200
Subject: [PATCH] BAEL-5977 Code for the Throw Exception for Unexpected Input
 for Enum with Mapstruct article

---
 mapstruct/pom.xml                             |  2 +-
 .../java/com/baeldung/enums/InputLevel.java   |  7 +++++
 .../java/com/baeldung/enums/LevelMapper.java  | 13 +++++++++
 .../java/com/baeldung/enums/OutputLevel.java  |  7 +++++
 .../baeldung/enums/LevelMapperUnitTest.java   | 28 +++++++++++++++++++
 5 files changed, 56 insertions(+), 1 deletion(-)
 create mode 100644 mapstruct/src/main/java/com/baeldung/enums/InputLevel.java
 create mode 100644 mapstruct/src/main/java/com/baeldung/enums/LevelMapper.java
 create mode 100644 mapstruct/src/main/java/com/baeldung/enums/OutputLevel.java
 create mode 100644 mapstruct/src/test/java/com/baeldung/enums/LevelMapperUnitTest.java

diff --git a/mapstruct/pom.xml b/mapstruct/pom.xml
index 62c9ca5870..7c279acb7b 100644
--- a/mapstruct/pom.xml
+++ b/mapstruct/pom.xml
@@ -73,7 +73,7 @@
     </build>
 
     <properties>
-        <org.mapstruct.version>1.5.3.Final</org.mapstruct.version>
+        <org.mapstruct.version>1.5.5.Final</org.mapstruct.version>
         <springframework.version>4.3.4.RELEASE</springframework.version>
         <lombok.mapstruct.binding.version>0.2.0</lombok.mapstruct.binding.version>
     </properties>
diff --git a/mapstruct/src/main/java/com/baeldung/enums/InputLevel.java b/mapstruct/src/main/java/com/baeldung/enums/InputLevel.java
new file mode 100644
index 0000000000..ba7e6735be
--- /dev/null
+++ b/mapstruct/src/main/java/com/baeldung/enums/InputLevel.java
@@ -0,0 +1,7 @@
+package com.baeldung.enums;
+
+enum InputLevel {
+
+    LOW, MEDIUM, HIGH
+
+}
diff --git a/mapstruct/src/main/java/com/baeldung/enums/LevelMapper.java b/mapstruct/src/main/java/com/baeldung/enums/LevelMapper.java
new file mode 100644
index 0000000000..d45d98b075
--- /dev/null
+++ b/mapstruct/src/main/java/com/baeldung/enums/LevelMapper.java
@@ -0,0 +1,13 @@
+package com.baeldung.enums;
+
+import org.mapstruct.Mapper;
+import org.mapstruct.MappingConstants;
+import org.mapstruct.ValueMapping;
+
+@Mapper
+interface LevelMapper {
+
+    @ValueMapping(source = MappingConstants.ANY_REMAINING, target = MappingConstants.THROW_EXCEPTION)
+    OutputLevel inputLevelToOutputLevel(InputLevel inputLevel);
+
+}
diff --git a/mapstruct/src/main/java/com/baeldung/enums/OutputLevel.java b/mapstruct/src/main/java/com/baeldung/enums/OutputLevel.java
new file mode 100644
index 0000000000..c1554ec9b4
--- /dev/null
+++ b/mapstruct/src/main/java/com/baeldung/enums/OutputLevel.java
@@ -0,0 +1,7 @@
+package com.baeldung.enums;
+
+enum OutputLevel {
+
+    LOW, HIGH
+
+}
diff --git a/mapstruct/src/test/java/com/baeldung/enums/LevelMapperUnitTest.java b/mapstruct/src/test/java/com/baeldung/enums/LevelMapperUnitTest.java
new file mode 100644
index 0000000000..a933ad7e83
--- /dev/null
+++ b/mapstruct/src/test/java/com/baeldung/enums/LevelMapperUnitTest.java
@@ -0,0 +1,28 @@
+package com.baeldung.enums;
+
+import org.junit.jupiter.api.Test;
+import org.mapstruct.factory.Mappers;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertThrows;
+
+class LevelMapperUnitTest {
+
+    LevelMapper levelMapper = Mappers.getMapper(LevelMapper.class);
+
+    @Test
+    void givenHighInputLevel_WhenInputLevelToOutputLevel_ThenHighOutputLevel() {
+        assertEquals(OutputLevel.HIGH, levelMapper.inputLevelToOutputLevel(InputLevel.HIGH));
+    }
+
+    @Test
+    void givenMediumInputLevel_WhenInputLevelToOutputLevel_ThenThrows() {
+        assertThrows(IllegalArgumentException.class, () -> levelMapper.inputLevelToOutputLevel(InputLevel.MEDIUM));
+    }
+
+    @Test
+    void givenLowInputLevel_WhenInputLevelToOutputLevel_ThenLowOutputLevel() {
+        assertEquals(OutputLevel.LOW, levelMapper.inputLevelToOutputLevel(InputLevel.LOW));
+    }
+
+}