chore: increase test coverage

lib/src/main/java/com/toedter/spring/hateoas/jsonapi/JsonApiEntityModelDeserializer.java

@@ -22,6 +22,7 @@
 import org.springframework.hateoas.EntityModel;
 import org.springframework.hateoas.Links;
 import org.springframework.util.Assert;
+import org.springframework.util.StringUtils;
 
 import java.lang.reflect.Field;
 import java.lang.reflect.Method;
@@ -162,8 +163,16 @@ protected EntityModel<?> convertToRepresentationModel(List<Object> resources, Js
                         try {
                             method.setAccessible(true);
                             // a setter is expected to return void
-                            if (method.getReturnType() == void.class) {
-                                method.invoke(content);
+                            if (method.getReturnType() == void.class && meta instanceof Map) {
+                                String methodName = method.getName();
+                                if (methodName.startsWith("set")) {
+                                    methodName = StringUtils.uncapitalize(methodName.substring(3));
+                                }
+
+                                Object metaValue = ((Map<?,?>) meta).get(methodName);
+                                if (metaValue != null) {
+                                    method.invoke(content, metaValue);
+                                }
                             }
                         } catch (Exception e) {
                             throw new IllegalArgumentException("Cannot set JSON:API meta data for annotated method: "

lib/src/test/java/com/toedter/spring/hateoas/jsonapi/Jackson2JsonApiIntegrationTest.java

@@ -1035,7 +1035,7 @@ public String getMetaProperty() {
     }
 
     @Test
-    void should_deserialize_jsonapimeta_method_annotation() throws Exception {
+    void should_deserialize_jsonapimeta_field_annotation() throws Exception {
         JavaType javaType =
                 mapper.getTypeFactory().constructParametricType(EntityModel.class, MovieWithMetaAnnotation.class);
         File file = new ClassPathResource("movieEntityModelWithMeta.json", getClass()).getFile();
@@ -1044,6 +1044,16 @@ void should_deserialize_jsonapimeta_method_annotation() throws Exception {
         assertThat(entityModel.getContent().getMetaProperty()).isEqualTo("metaValue");
     }
 
+    @Test
+    void should_deserialize_jsonapimeta_method_annotation() throws Exception {
+        JavaType javaType =
+                mapper.getTypeFactory().constructParametricType(EntityModel.class, MovieWithMethodMetaAnnotation.class);
+        File file = new ClassPathResource("movieEntityModelWithMeta.json", getClass()).getFile();
+        EntityModel<MovieWithMethodMetaAnnotation> entityModel = mapper.readValue(file, javaType);
+
+        assertThat(entityModel.getContent().getMetaProperty()).isEqualTo("metaValue");
+    }
+
     private void compareWithFile(String json, String fileName) throws Exception {
         File file = new ClassPathResource(fileName, getClass()).getFile();
         ObjectMapper objectMapper = new ObjectMapper();

lib/src/test/java/com/toedter/spring/hateoas/jsonapi/JsonApiLinksDeserializerUnitTest.java

@@ -0,0 +1,34 @@
+/*
+ * Copyright 2022 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.toedter.spring.hateoas.jsonapi;
+
+import org.junit.jupiter.api.DisplayName;
+import org.junit.jupiter.api.DisplayNameGeneration;
+import org.junit.jupiter.api.DisplayNameGenerator;
+import org.junit.jupiter.api.Test;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+@DisplayNameGeneration(DisplayNameGenerator.ReplaceUnderscores.class)
+@DisplayName("JsonApiLinksDeserializer Unit Test")
+class JsonApiLinksDeserializerUnitTest extends JsonApiTestBase {
+
+    @Test
+    void should_return_null_content_deserializer() {
+        assertThat(new JsonApiLinksDeserializer().getContentDeserializer()).isNull();
+    }
+}

lib/src/test/java/com/toedter/spring/hateoas/jsonapi/support/MovieWithMethodMetaAnnotation.java

@@ -0,0 +1,46 @@
+/*
+ * Copyright 2022 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.toedter.spring.hateoas.jsonapi.support;
+
+import com.toedter.spring.hateoas.jsonapi.JsonApiMeta;
+import com.toedter.spring.hateoas.jsonapi.JsonApiTypeForClass;
+import lombok.AllArgsConstructor;
+import lombok.Data;
+import lombok.NoArgsConstructor;
+import lombok.With;
+
+@Data
+@NoArgsConstructor
+@AllArgsConstructor
+@With
+@JsonApiTypeForClass("movies")
+public class MovieWithMethodMetaAnnotation {
+    private Long id = 1L;
+    private String title = "Star Wars";
+    private String metaProperty = "xxx";
+
+    @JsonApiMeta
+    public String getMetaProperty() {
+        return metaProperty;
+    }
+
+    @JsonApiMeta
+    public void setMetaProperty(String metaProperty) {
+        this.metaProperty = metaProperty;
+    }
+
+}