#2131 Add extra test case

processor/src/test/java/org/mapstruct/ap/test/bugs/_2131/Issue2131Mapper.java

@@ -0,0 +1,45 @@
+/*
+ * Copyright MapStruct Authors.
+ *
+ * Licensed under the Apache License version 2.0, available at http://www.apache.org/licenses/LICENSE-2.0
+ */
+package org.mapstruct.ap.test.bugs._2131;
+
+import org.mapstruct.Mapper;
+import org.mapstruct.NullValueCheckStrategy;
+import org.mapstruct.factory.Mappers;
+
+/**
+ * @author Filip Hrisafov
+ */
+@Mapper(nullValueCheckStrategy = NullValueCheckStrategy.ALWAYS)
+public interface Issue2131Mapper {
+
+    Issue2131Mapper INSTANCE = Mappers.getMapper( Issue2131Mapper.class );
+
+    TestDto map(TestModel source);
+
+    class TestModel {
+        private final String name;
+
+        public TestModel(String name) {
+            this.name = name;
+        }
+
+        public String getName() {
+            return name;
+        }
+    }
+
+    class TestDto {
+        private String name;
+
+        public TestDto(String name) {
+            this.name = name;
+        }
+
+        public String getName() {
+            return name;
+        }
+    }
+}

processor/src/test/java/org/mapstruct/ap/test/bugs/_2131/Issue2131Test.java

@@ -0,0 +1,37 @@
+/*
+ * Copyright MapStruct Authors.
+ *
+ * Licensed under the Apache License version 2.0, available at http://www.apache.org/licenses/LICENSE-2.0
+ */
+package org.mapstruct.ap.test.bugs._2131;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.mapstruct.ap.testutil.IssueKey;
+import org.mapstruct.ap.testutil.WithClasses;
+import org.mapstruct.ap.testutil.runner.AnnotationProcessorTestRunner;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+/**
+ * @author Filip Hrisafov
+ */
+@IssueKey("2131")
+@RunWith(AnnotationProcessorTestRunner.class)
+@WithClasses(Issue2131Mapper.class)
+public class Issue2131Test {
+
+    @Test
+    public void shouldCompile() {
+        Issue2131Mapper mapper = Issue2131Mapper.INSTANCE;
+
+        Issue2131Mapper.TestDto target = mapper.map( new Issue2131Mapper.TestModel( "test" ) );
+
+        assertThat( target ).isNotNull();
+        assertThat( target.getName() ).isEqualTo( "test" );
+
+        target = mapper.map( new Issue2131Mapper.TestModel( null ) );
+        assertThat( target ).isNotNull();
+        assertThat( target.getName() ).isNull();
+    }
+}