BAEL-4687: added test for each configuration

spring-boot-modules/spring-boot-jackson/src/main/java/com/baeldung/boot/jackson/app/Application.java

@@ -1,11 +1,12 @@
-package com.baeldung.boot.jackson;
+package com.baeldung.boot.jackson.app;
 
 import org.springframework.boot.SpringApplication;
 import org.springframework.boot.autoconfigure.SpringBootApplication;
+import org.springframework.context.annotation.ComponentScan;
 
 @SpringBootApplication
+@ComponentScan(basePackages = "com.baeldung.boot.jackson.controller")
 public class Application {
-
     public static void main(String[] args) {
         SpringApplication.run(Application.class, args);
     }

spring-boot-modules/spring-boot-jackson/src/main/java/com/baeldung/boot/jackson/config/CoffeeConfiguration.java

@@ -1,60 +0,0 @@
-package com.baeldung.boot.jackson.config;
-
-import com.fasterxml.jackson.annotation.JsonInclude;
-import com.fasterxml.jackson.databind.Module;
-import com.fasterxml.jackson.databind.ObjectMapper;
-import com.fasterxml.jackson.datatype.jsr310.JavaTimeModule;
-import com.fasterxml.jackson.datatype.jsr310.ser.LocalDateTimeSerializer;
-import org.springframework.boot.autoconfigure.jackson.Jackson2ObjectMapperBuilderCustomizer;
-import org.springframework.context.annotation.Bean;
-import org.springframework.context.annotation.Configuration;
-import org.springframework.context.annotation.Primary;
-import org.springframework.http.converter.json.Jackson2ObjectMapperBuilder;
-import org.springframework.http.converter.json.MappingJackson2HttpMessageConverter;
-
-import java.time.format.DateTimeFormatter;
-
-@Configuration
-public class CoffeeConfiguration {
-    public static final String dateTimeFormat = "dd-MM-yyyy HH:mm";
-    private LocalDateTimeSerializer localDateTimeSerializer = new LocalDateTimeSerializer(DateTimeFormatter.ofPattern(dateTimeFormat));
-
-    @Bean
-    public MappingJackson2HttpMessageConverter mappingJackson2HttpMessageConverter() {
-        Jackson2ObjectMapperBuilder builder = new Jackson2ObjectMapperBuilder()
-                .serializers(localDateTimeSerializer)
-                .serializationInclusion(JsonInclude.Include.NON_NULL);
-        return new MappingJackson2HttpMessageConverter(builder.build());
-    }
-
-    @Bean
-    public Jackson2ObjectMapperBuilderCustomizer jsonCustomizer() {
-        return builder -> builder.serializationInclusion(JsonInclude.Include.NON_NULL)
-                .serializers(localDateTimeSerializer);
-    }
-
-    @Bean
-    @Primary
-    public ObjectMapper objectMapper() {
-        JavaTimeModule module = new JavaTimeModule();
-        module.addSerializer(localDateTimeSerializer);
-        return new ObjectMapper()
-                .setSerializationInclusion(JsonInclude.Include.NON_NULL)
-                .registerModule(module);
-    }
-
-    @Bean
-    @Primary
-    public Jackson2ObjectMapperBuilder jackson2ObjectMapperBuilder() {
-        return new Jackson2ObjectMapperBuilder()
-                .serializers(localDateTimeSerializer)
-                .serializationInclusion(JsonInclude.Include.NON_NULL);
-    }
-
-    @Bean
-    public Module javaTimeModule() {
-        JavaTimeModule module = new JavaTimeModule();
-        module.addSerializer(localDateTimeSerializer);
-        return module;
-    }
-}

spring-boot-modules/spring-boot-jackson/src/main/java/com/baeldung/boot/jackson/config/CoffeeConstants.java

@@ -0,0 +1,11 @@
+package com.baeldung.boot.jackson.config;
+
+import com.fasterxml.jackson.datatype.jsr310.ser.LocalDateTimeSerializer;
+
+import java.time.format.DateTimeFormatter;
+
+public class CoffeeConstants {
+
+    public static final String dateTimeFormat = "dd-MM-yyyy HH:mm";
+    public static LocalDateTimeSerializer localDateTimeSerializer = new LocalDateTimeSerializer(DateTimeFormatter.ofPattern(dateTimeFormat));
+}

spring-boot-modules/spring-boot-jackson/src/main/java/com/baeldung/boot/jackson/config/CoffeeCustomizerConfig.java

@@ -0,0 +1,18 @@
+package com.baeldung.boot.jackson.config;
+
+import com.fasterxml.jackson.annotation.JsonInclude;
+import org.springframework.boot.autoconfigure.jackson.Jackson2ObjectMapperBuilderCustomizer;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+
+import static com.baeldung.boot.jackson.config.CoffeeConstants.localDateTimeSerializer;
+
+@Configuration
+public class CoffeeCustomizerConfig {
+
+    @Bean
+    public Jackson2ObjectMapperBuilderCustomizer jsonCustomizer() {
+        return builder -> builder.serializationInclusion(JsonInclude.Include.NON_NULL)
+                .serializers(localDateTimeSerializer);
+    }
+}

spring-boot-modules/spring-boot-jackson/src/main/java/com/baeldung/boot/jackson/config/CoffeeHttpConverterConfiguration.java

@@ -0,0 +1,21 @@
+package com.baeldung.boot.jackson.config;
+
+import com.fasterxml.jackson.annotation.JsonInclude;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.http.converter.json.Jackson2ObjectMapperBuilder;
+import org.springframework.http.converter.json.MappingJackson2HttpMessageConverter;
+
+import static com.baeldung.boot.jackson.config.CoffeeConstants.localDateTimeSerializer;
+
+@Configuration
+public class CoffeeHttpConverterConfiguration {
+
+    @Bean
+    public MappingJackson2HttpMessageConverter mappingJackson2HttpMessageConverter() {
+        Jackson2ObjectMapperBuilder builder = new Jackson2ObjectMapperBuilder()
+                .serializers(localDateTimeSerializer)
+                .serializationInclusion(JsonInclude.Include.NON_NULL);
+        return new MappingJackson2HttpMessageConverter(builder.build());
+    }
+}

spring-boot-modules/spring-boot-jackson/src/main/java/com/baeldung/boot/jackson/config/CoffeeJacksonBuilderConfig.java

@@ -0,0 +1,21 @@
+package com.baeldung.boot.jackson.config;
+
+import com.fasterxml.jackson.annotation.JsonInclude;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.context.annotation.Primary;
+import org.springframework.http.converter.json.Jackson2ObjectMapperBuilder;
+
+import static com.baeldung.boot.jackson.config.CoffeeConstants.localDateTimeSerializer;
+
+@Configuration
+public class CoffeeJacksonBuilderConfig {
+
+    @Bean
+    @Primary
+    public Jackson2ObjectMapperBuilder jackson2ObjectMapperBuilder() {
+        return new Jackson2ObjectMapperBuilder()
+                .serializers(localDateTimeSerializer)
+                .serializationInclusion(JsonInclude.Include.NON_NULL);
+    }
+}

spring-boot-modules/spring-boot-jackson/src/main/java/com/baeldung/boot/jackson/config/CoffeeObjectMapperConfig.java

@@ -0,0 +1,24 @@
+package com.baeldung.boot.jackson.config;
+
+import com.fasterxml.jackson.annotation.JsonInclude;
+import com.fasterxml.jackson.databind.ObjectMapper;
+import com.fasterxml.jackson.datatype.jsr310.JavaTimeModule;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.context.annotation.Primary;
+
+import static com.baeldung.boot.jackson.config.CoffeeConstants.localDateTimeSerializer;
+
+@Configuration
+public class CoffeeObjectMapperConfig {
+
+    @Bean
+    @Primary
+    public ObjectMapper objectMapper() {
+        JavaTimeModule module = new JavaTimeModule();
+        module.addSerializer(localDateTimeSerializer);
+        return new ObjectMapper()
+                .setSerializationInclusion(JsonInclude.Include.NON_NULL)
+                .registerModule(module);
+    }
+}

spring-boot-modules/spring-boot-jackson/src/main/java/com/baeldung/boot/jackson/config/CoffeeRegisterModuleConfig.java

@@ -0,0 +1,21 @@
+package com.baeldung.boot.jackson.config;
+
+import com.fasterxml.jackson.databind.Module;
+import com.fasterxml.jackson.datatype.jsr310.JavaTimeModule;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.context.annotation.PropertySource;
+
+import static com.baeldung.boot.jackson.config.CoffeeConstants.localDateTimeSerializer;
+
+@Configuration
+@PropertySource("classpath:coffee.properties")
+public class CoffeeRegisterModuleConfig {
+
+    @Bean
+    public Module javaTimeModule() {
+        JavaTimeModule module = new JavaTimeModule();
+        module.addSerializer(localDateTimeSerializer);
+        return module;
+    }
+}

spring-boot-modules/spring-boot-jackson/src/main/resources/application.properties

@@ -1,2 +0,0 @@
-spring.jackson.default-property-inclusion=non_null
-spring.jackson.serialization.write-dates-as-timestamps=false

spring-boot-modules/spring-boot-jackson/src/main/resources/coffee.properties

@@ -0,0 +1 @@
+spring.jackson.default-property-inclusion=non_null

spring-boot-modules/spring-boot-jackson/src/test/java/com/baeldung/boot/jackson/app/AbstractCoffeeIntegrationTest.java

@@ -1,6 +1,6 @@
-package com.baeldung.boot.jackson;
+package com.baeldung.boot.jackson.app;
 
-import com.baeldung.boot.jackson.config.CoffeeConfiguration;
+import com.baeldung.boot.jackson.config.CoffeeConstants;
 import org.junit.jupiter.api.Test;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.boot.test.context.SpringBootTest;
@@ -12,20 +12,20 @@ import java.time.format.DateTimeFormatter;
 import static org.assertj.core.api.Assertions.assertThat;
 
 @SpringBootTest(classes = Application.class, webEnvironment = SpringBootTest.WebEnvironment.RANDOM_PORT)
-public class CoffeeIntegrationTest {
+public abstract class AbstractCoffeeIntegrationTest {
 
     @Autowired
-    TestRestTemplate restTemplate;
+    protected TestRestTemplate restTemplate;
 
     @Test
     public void whenGetCoffee_thenSerializedWithDateAndNonNull() {
-        String formattedDate = DateTimeFormatter.ofPattern(CoffeeConfiguration.dateTimeFormat)
+        String formattedDate = DateTimeFormatter.ofPattern(CoffeeConstants.dateTimeFormat)
                 .format(LocalDateTime.now());
+
         String brand = "Lavazza";
 
         String url = "/coffee?brand=" + brand;
         String response = restTemplate.getForObject(url, String.class);
-
         assertThat(response).isEqualTo(
                 "{\"brand\":\"" + brand + "\",\"date\":\"" + formattedDate + "\"}");
     }

spring-boot-modules/spring-boot-jackson/src/test/java/com/baeldung/boot/jackson/app/CoffeeCustomizerIntegrationTest.java

@@ -0,0 +1,8 @@
+package com.baeldung.boot.jackson.app;
+
+import com.baeldung.boot.jackson.config.CoffeeCustomizerConfig;
+import org.springframework.context.annotation.Import;
+
+@Import(CoffeeCustomizerConfig.class)
+public class CoffeeCustomizerIntegrationTest extends AbstractCoffeeIntegrationTest {
+}

spring-boot-modules/spring-boot-jackson/src/test/java/com/baeldung/boot/jackson/app/CoffeeHttpConverterIntegrationTest.java

@@ -0,0 +1,8 @@
+package com.baeldung.boot.jackson.app;
+
+import com.baeldung.boot.jackson.config.CoffeeHttpConverterConfiguration;
+import org.springframework.context.annotation.Import;
+
+@Import(CoffeeHttpConverterConfiguration.class)
+public class CoffeeHttpConverterIntegrationTest extends AbstractCoffeeIntegrationTest {
+}

spring-boot-modules/spring-boot-jackson/src/test/java/com/baeldung/boot/jackson/app/CoffeeJacksonBuilderIntegrationTest.java

@@ -0,0 +1,8 @@
+package com.baeldung.boot.jackson.app;
+
+import com.baeldung.boot.jackson.config.CoffeeJacksonBuilderConfig;
+import org.springframework.context.annotation.Import;
+
+@Import(CoffeeJacksonBuilderConfig.class)
+public class CoffeeJacksonBuilderIntegrationTest extends AbstractCoffeeIntegrationTest {
+}

spring-boot-modules/spring-boot-jackson/src/test/java/com/baeldung/boot/jackson/app/CoffeeObjectMapperIntegrationTest.java

@@ -0,0 +1,8 @@
+package com.baeldung.boot.jackson.app;
+
+import com.baeldung.boot.jackson.config.CoffeeObjectMapperConfig;
+import org.springframework.context.annotation.Import;
+
+@Import(CoffeeObjectMapperConfig.class)
+public class CoffeeObjectMapperIntegrationTest extends AbstractCoffeeIntegrationTest {
+}

spring-boot-modules/spring-boot-jackson/src/test/java/com/baeldung/boot/jackson/app/CoffeeRegisterModuleIntegrationTest.java

@@ -0,0 +1,8 @@
+package com.baeldung.boot.jackson.app;
+
+import com.baeldung.boot.jackson.config.CoffeeRegisterModuleConfig;
+import org.springframework.context.annotation.Import;
+
+@Import(CoffeeRegisterModuleConfig.class)
+public class CoffeeRegisterModuleIntegrationTest extends AbstractCoffeeIntegrationTest {
+}