Merge branch 'master' of https://github.com/eugenp/tutorials

jackson/src/test/java/org/baeldung/jackson/annotation/BeanWithCreator.java

@@ -0,0 +1,16 @@
+package org.baeldung.jackson.annotation;
+
+import com.fasterxml.jackson.annotation.JsonCreator;
+import com.fasterxml.jackson.annotation.JsonProperty;
+
+
+public class BeanWithCreator {
+    public int id;
+    public String name;
+
+    @JsonCreator
+    public BeanWithCreator(@JsonProperty("id") final int id, @JsonProperty("theName") final String name) {
+        this.id = id;
+        this.name = name;
+    }
+}

jackson/src/test/java/org/baeldung/jackson/annotation/BeanWithCustomAnnotation.java

@@ -0,0 +1,37 @@
+package org.baeldung.jackson.annotation;
+
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+import java.util.Date;
+
+import org.baeldung.jackson.annotation.BeanWithCustomAnnotation.CustomAnnotation;
+
+import com.fasterxml.jackson.annotation.JacksonAnnotationsInside;
+import com.fasterxml.jackson.annotation.JsonInclude;
+import com.fasterxml.jackson.annotation.JsonInclude.Include;
+import com.fasterxml.jackson.annotation.JsonPropertyOrder;
+
+@CustomAnnotation
+public class BeanWithCustomAnnotation {
+    public int id;
+    public String name;
+    public Date dateCreated;
+
+    public BeanWithCustomAnnotation() {
+
+    }
+
+    public BeanWithCustomAnnotation(final int id, final String name, final Date dateCreated) {
+        this.id = id;
+        this.name = name;
+        this.dateCreated = dateCreated;
+    }
+
+    @Retention(RetentionPolicy.RUNTIME)
+    @JacksonAnnotationsInside
+    @JsonInclude(Include.NON_NULL)
+    @JsonPropertyOrder({ "name", "id", "dateCreated" })
+    public @interface CustomAnnotation {
+
+    }
+}

jackson/src/test/java/org/baeldung/jackson/annotation/BeanWithFilter.java

@@ -0,0 +1,18 @@
+package org.baeldung.jackson.annotation;
+
+import com.fasterxml.jackson.annotation.JsonFilter;
+
+@JsonFilter("myFilter")
+public class BeanWithFilter {
+    public int id;
+    public String name;
+
+    public BeanWithFilter() {
+
+    }
+
+    public BeanWithFilter(final int id, final String name) {
+        this.id = id;
+        this.name = name;
+    }
+}

jackson/src/test/java/org/baeldung/jackson/annotation/BeanWithGetter.java

@@ -0,0 +1,31 @@
+package org.baeldung.jackson.annotation;
+
+import com.fasterxml.jackson.annotation.JsonGetter;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonSetter;
+
+public class BeanWithGetter {
+    public int id;
+    private String name;
+
+    public BeanWithGetter() {
+
+    }
+
+    public BeanWithGetter(final int id, final String name) {
+        this.id = id;
+        this.name = name;
+    }
+
+    @JsonProperty("name")
+    @JsonSetter("name")
+    public void setTheName(final String name) {
+        this.name = name;
+    }
+
+    @JsonProperty("name")
+    @JsonGetter("name")
+    public String getTheName() {
+        return name;
+    }
+}

jackson/src/test/java/org/baeldung/jackson/annotation/BeanWithIgnore.java

@@ -0,0 +1,20 @@
+package org.baeldung.jackson.annotation;
+
+import com.fasterxml.jackson.annotation.JsonIgnore;
+import com.fasterxml.jackson.annotation.JsonIgnoreProperties;
+
+@JsonIgnoreProperties({ "id" })
+public class BeanWithIgnore {
+    @JsonIgnore
+    public int id;
+    public String name;
+
+    public BeanWithIgnore() {
+
+    }
+
+    public BeanWithIgnore(final int id, final String name) {
+        this.id = id;
+        this.name = name;
+    }
+}

jackson/src/test/java/org/baeldung/jackson/annotation/BeanWithInject.java

@@ -0,0 +1,18 @@
+package org.baeldung.jackson.annotation;
+
+import com.fasterxml.jackson.annotation.JacksonInject;
+
+public class BeanWithInject {
+    @JacksonInject
+    public int id;
+    public String name;
+
+    public BeanWithInject() {
+
+    }
+
+    public BeanWithInject(final int id, final String name) {
+        this.id = id;
+        this.name = name;
+    }
+}

jackson/src/test/java/org/baeldung/jackson/annotation/ExtendableBean.java

@@ -0,0 +1,31 @@
+package org.baeldung.jackson.annotation;
+
+import java.util.HashMap;
+import java.util.Map;
+
+import com.fasterxml.jackson.annotation.JsonAnyGetter;
+import com.fasterxml.jackson.annotation.JsonAnySetter;
+
+public class ExtendableBean {
+    public String name;
+    private Map<String, String> properties;
+
+    public ExtendableBean() {
+        properties = new HashMap<String, String>();
+    }
+
+    public ExtendableBean(final String name) {
+        this.name = name;
+        properties = new HashMap<String, String>();
+    }
+
+    @JsonAnySetter
+    public void add(final String key, final String value) {
+        properties.put(key, value);
+    }
+
+    @JsonAnyGetter
+    public Map<String, String> getProperties() {
+        return properties;
+    }
+}

jackson/src/test/java/org/baeldung/jackson/annotation/MyBean.java

@@ -0,0 +1,21 @@
+package org.baeldung.jackson.annotation;
+
+import com.fasterxml.jackson.annotation.JsonInclude;
+import com.fasterxml.jackson.annotation.JsonInclude.Include;
+import com.fasterxml.jackson.annotation.JsonPropertyOrder;
+
+@JsonInclude(Include.NON_NULL)
+@JsonPropertyOrder({ "name", "id" })
+public class MyBean {
+    public int id;
+    public String name;
+
+    public MyBean() {
+
+    }
+
+    public MyBean(final int id, final String name) {
+        this.id = id;
+        this.name = name;
+    }
+}

jackson/src/test/java/org/baeldung/jackson/annotation/PrivateBean.java

@@ -0,0 +1,19 @@
+package org.baeldung.jackson.annotation;
+
+import com.fasterxml.jackson.annotation.JsonAutoDetect;
+import com.fasterxml.jackson.annotation.JsonAutoDetect.Visibility;
+
+@JsonAutoDetect(fieldVisibility = Visibility.ANY)
+public class PrivateBean {
+    private int id;
+    private String name;
+
+    public PrivateBean() {
+
+    }
+
+    public PrivateBean(final int id, final String name) {
+        this.id = id;
+        this.name = name;
+    }
+}

jackson/src/test/java/org/baeldung/jackson/annotation/RawBean.java

@@ -0,0 +1,19 @@
+package org.baeldung.jackson.annotation;
+
+import com.fasterxml.jackson.annotation.JsonRawValue;
+
+public class RawBean {
+    public String name;
+
+    @JsonRawValue
+    public String json;
+
+    public RawBean() {
+
+    }
+
+    public RawBean(final String name, final String json) {
+        this.name = name;
+        this.json = json;
+    }
+}

jackson/src/test/java/org/baeldung/jackson/annotation/UnwrappedUser.java

@@ -0,0 +1,34 @@
+package org.baeldung.jackson.annotation;
+
+import com.fasterxml.jackson.annotation.JsonUnwrapped;
+
+public class UnwrappedUser {
+    public int id;
+
+    @JsonUnwrapped
+    public Name name;
+
+    public UnwrappedUser() {
+
+    }
+
+    public UnwrappedUser(final int id, final Name name) {
+        this.id = id;
+        this.name = name;
+    }
+
+    public static class Name {
+        public String firstName;
+        public String lastName;
+
+        public Name() {
+
+        }
+
+        public Name(final String firstName, final String lastName) {
+            this.firstName = firstName;
+            this.lastName = lastName;
+        }
+    }
+
+}

jackson/src/test/java/org/baeldung/jackson/annotation/UserWithIgnoreType.java

@@ -0,0 +1,34 @@
+package org.baeldung.jackson.annotation;
+
+import com.fasterxml.jackson.annotation.JsonIgnoreType;
+
+public class UserWithIgnoreType {
+    public int id;
+
+    public Name name;
+
+    public UserWithIgnoreType() {
+
+    }
+
+    public UserWithIgnoreType(final int id, final Name name) {
+        this.id = id;
+        this.name = name;
+    }
+
+    @JsonIgnoreType
+    public static class Name {
+        public String firstName;
+        public String lastName;
+
+        public Name() {
+
+        }
+
+        public Name(final String firstName, final String lastName) {
+            this.firstName = firstName;
+            this.lastName = lastName;
+        }
+    }
+
+}

jackson/src/test/java/org/baeldung/jackson/annotation/Zoo.java

@@ -0,0 +1,60 @@
+package org.baeldung.jackson.annotation;
+
+import com.fasterxml.jackson.annotation.JsonSubTypes;
+import com.fasterxml.jackson.annotation.JsonTypeInfo;
+import com.fasterxml.jackson.annotation.JsonTypeInfo.As;
+import com.fasterxml.jackson.annotation.JsonTypeName;
+
+public class Zoo {
+    public Animal animal;
+
+    public Zoo() {
+
+    }
+
+    public Zoo(final Animal animal) {
+        this.animal = animal;
+    }
+
+
+    @JsonTypeInfo(use = JsonTypeInfo.Id.NAME, include = As.PROPERTY, property = "type")
+    @JsonSubTypes({
+        @JsonSubTypes.Type(value = Dog.class, name = "dog"),
+        @JsonSubTypes.Type(value = Cat.class, name = "cat")
+    })
+    public static class Animal {
+        public String name;
+
+        public Animal() {
+        }
+
+        public Animal(final String name) {
+            this.name = name;
+        }
+    }
+
+    @JsonTypeName("dog")
+    public static class Dog extends Animal {
+        public double barkVolume;
+
+        public Dog() {
+        }
+
+        public Dog(final String name) {
+            this.name = name;
+        }
+    }
+
+    @JsonTypeName("cat")
+    public static class Cat extends Animal {
+        boolean likesCream;
+        public int lives;
+
+        public Cat() {
+        }
+
+        public Cat(final String name) {
+            this.name = name;
+        }
+    }
+}

jackson/src/test/java/org/baeldung/jackson/test/JacksonAnnotationTest.java

@@ -0,0 +1,367 @@
+package org.baeldung.jackson.test;
+
+import static org.hamcrest.Matchers.containsString;
+import static org.hamcrest.Matchers.is;
+import static org.hamcrest.Matchers.not;
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertThat;
+
+import java.io.IOException;
+import java.text.ParseException;
+import java.text.SimpleDateFormat;
+import java.util.Date;
+import java.util.TimeZone;
+
+import org.baeldung.jackson.annotation.BeanWithCreator;
+import org.baeldung.jackson.annotation.BeanWithCustomAnnotation;
+import org.baeldung.jackson.annotation.BeanWithFilter;
+import org.baeldung.jackson.annotation.BeanWithGetter;
+import org.baeldung.jackson.annotation.BeanWithIgnore;
+import org.baeldung.jackson.annotation.BeanWithInject;
+import org.baeldung.jackson.annotation.ExtendableBean;
+import org.baeldung.jackson.annotation.MyBean;
+import org.baeldung.jackson.annotation.PrivateBean;
+import org.baeldung.jackson.annotation.RawBean;
+import org.baeldung.jackson.annotation.UnwrappedUser;
+import org.baeldung.jackson.annotation.UserWithIgnoreType;
+import org.baeldung.jackson.annotation.Zoo;
+import org.baeldung.jackson.bidirection.ItemWithIdentity;
+import org.baeldung.jackson.bidirection.ItemWithRef;
+import org.baeldung.jackson.bidirection.UserWithIdentity;
+import org.baeldung.jackson.bidirection.UserWithRef;
+import org.baeldung.jackson.date.EventWithFormat;
+import org.baeldung.jackson.date.EventWithSerializer;
+import org.baeldung.jackson.dtos.MyMixInForString;
+import org.baeldung.jackson.dtos.User;
+import org.baeldung.jackson.dtos.withEnum.TypeEnumWithValue;
+import org.baeldung.jackson.exception.UserWithRoot;
+import org.baeldung.jackson.jsonview.Item;
+import org.baeldung.jackson.jsonview.Views;
+import org.junit.Test;
+
+import com.fasterxml.jackson.core.JsonParseException;
+import com.fasterxml.jackson.core.JsonProcessingException;
+import com.fasterxml.jackson.databind.InjectableValues;
+import com.fasterxml.jackson.databind.MapperFeature;
+import com.fasterxml.jackson.databind.ObjectMapper;
+import com.fasterxml.jackson.databind.SerializationFeature;
+import com.fasterxml.jackson.databind.ser.FilterProvider;
+import com.fasterxml.jackson.databind.ser.impl.SimpleBeanPropertyFilter;
+import com.fasterxml.jackson.databind.ser.impl.SimpleFilterProvider;
+
+
+public class JacksonAnnotationTest {
+
+    @Test
+    public void whenSerializingUsingJsonAnyGetter_thenCorrect() throws JsonProcessingException {
+        final ExtendableBean bean = new ExtendableBean("My bean");
+        bean.add("attr1", "val1");
+        bean.add("attr2", "val2");
+
+        final String result = new ObjectMapper().writeValueAsString(bean);
+        assertThat(result, containsString("attr1"));
+        assertThat(result, containsString("val1"));
+    }
+
+    @Test
+    public void whenSerializingUsingJsonGetter_thenCorrect() throws JsonProcessingException {
+        final BeanWithGetter bean = new BeanWithGetter(1, "My bean");
+
+        final String result = new ObjectMapper().writeValueAsString(bean);
+        assertThat(result, containsString("My bean"));
+        assertThat(result, containsString("1"));
+    }
+
+    @Test
+    public void whenSerializingUsingJsonPropertyOrder_thenCorrect() throws JsonProcessingException {
+        final MyBean bean = new MyBean(1, "My bean");
+
+        final String result = new ObjectMapper().writeValueAsString(bean);
+        assertThat(result, containsString("My bean"));
+        assertThat(result, containsString("1"));
+    }
+
+    @Test
+    public void whenSerializingUsingJsonRawValue_thenCorrect() throws JsonProcessingException {
+        final RawBean bean = new RawBean("My bean", "{\"attr\":false}");
+
+        final String result = new ObjectMapper().writeValueAsString(bean);
+        assertThat(result, containsString("My bean"));
+        assertThat(result, containsString("{\"attr\":false}"));
+    }
+
+    @Test
+    public void whenSerializingUsingJsonRootName_thenCorrect() throws JsonProcessingException {
+        final UserWithRoot user = new UserWithRoot(1, "John");
+
+        final ObjectMapper mapper = new ObjectMapper();
+        mapper.enable(SerializationFeature.WRAP_ROOT_VALUE);
+        final String result = mapper.writeValueAsString(user);
+
+        assertThat(result, containsString("John"));
+        assertThat(result, containsString("user"));
+    }
+
+    @Test
+    public void whenSerializingUsingJsonValue_thenCorrect() throws JsonParseException, IOException {
+        final String enumAsString = new ObjectMapper().writeValueAsString(TypeEnumWithValue.TYPE1);
+
+        assertThat(enumAsString, is("\"Type A\""));
+    }
+
+    @Test
+    public void whenSerializingUsingJsonSerialize_thenCorrect() throws JsonProcessingException, ParseException {
+        final SimpleDateFormat df = new SimpleDateFormat("dd-MM-yyyy hh:mm:ss");
+
+        final String toParse = "20-12-2014 02:30:00";
+        final Date date = df.parse(toParse);
+        final EventWithSerializer event = new EventWithSerializer("party", date);
+
+        final String result = new ObjectMapper().writeValueAsString(event);
+        assertThat(result, containsString(toParse));
+    }
+
+    // ========================= Deserializing annotations ============================
+
+    @Test
+    public void whenDeserializingUsingJsonCreator_thenCorrect() throws JsonProcessingException, IOException {
+        final String json = "{\"id\":1,\"theName\":\"My bean\"}";
+
+        final BeanWithCreator bean = new ObjectMapper().reader(BeanWithCreator.class).readValue(json);
+        assertEquals("My bean", bean.name);
+    }
+
+    @Test
+    public void whenDeserializingUsingJsonInject_thenCorrect() throws JsonProcessingException, IOException {
+        final String json = "{\"name\":\"My bean\"}";
+        final InjectableValues inject = new InjectableValues.Std().addValue(int.class, 1);
+
+        final BeanWithInject bean = new ObjectMapper().reader(inject).withType(BeanWithInject.class).readValue(json);
+        assertEquals("My bean", bean.name);
+        assertEquals(1, bean.id);
+    }
+
+    @Test
+    public void whenDeserializingUsingJsonAnySetter_thenCorrect() throws JsonProcessingException, IOException {
+        final String json = "{\"name\":\"My bean\",\"attr2\":\"val2\",\"attr1\":\"val1\"}";
+
+        final ExtendableBean bean = new ObjectMapper().reader(ExtendableBean.class).readValue(json);
+        assertEquals("My bean", bean.name);
+        assertEquals("val2", bean.getProperties().get("attr2"));
+    }
+
+    @Test
+    public void whenDeserializingUsingJsonSetter_thenCorrect() throws JsonProcessingException, IOException {
+        final String json = "{\"id\":1,\"name\":\"My bean\"}";
+
+        final BeanWithGetter bean = new ObjectMapper().reader(BeanWithGetter.class).readValue(json);
+        assertEquals("My bean", bean.getTheName());
+    }
+
+    @Test
+    public void whenDeserializingUsingJsonDeserialize_thenCorrect() throws JsonProcessingException, IOException {
+        final String json = "{\"name\":\"party\",\"eventDate\":\"20-12-2014 02:30:00\"}";
+
+        final SimpleDateFormat df = new SimpleDateFormat("dd-MM-yyyy hh:mm:ss");
+
+        final EventWithSerializer event = new ObjectMapper().reader(EventWithSerializer.class).readValue(json);
+        assertEquals("20-12-2014 02:30:00", df.format(event.eventDate));
+    }
+
+    // ========================= Inclusion annotations ============================
+
+    @Test
+    public void whenSerializingUsingJsonIgnoreProperties_thenCorrect() throws JsonProcessingException, IOException {
+        final BeanWithIgnore bean = new BeanWithIgnore(1, "My bean");
+
+        final String result = new ObjectMapper().writeValueAsString(bean);
+        assertThat(result, containsString("My bean"));
+        assertThat(result, not(containsString("id")));
+    }
+
+    @Test
+    public void whenSerializingUsingJsonIgnore_thenCorrect() throws JsonProcessingException, IOException {
+        final BeanWithIgnore bean = new BeanWithIgnore(1, "My bean");
+
+        final String result = new ObjectMapper().writeValueAsString(bean);
+        assertThat(result, containsString("My bean"));
+        assertThat(result, not(containsString("id")));
+    }
+
+    @Test
+    public void whenSerializingUsingJsonIgnoreType_thenCorrect() throws JsonProcessingException, ParseException {
+        final UserWithIgnoreType.Name name = new UserWithIgnoreType.Name("John", "Doe");
+        final UserWithIgnoreType user = new UserWithIgnoreType(1, name);
+
+        final String result = new ObjectMapper().writeValueAsString(user);
+
+        assertThat(result, containsString("1"));
+        assertThat(result, not(containsString("name")));
+        assertThat(result, not(containsString("John")));
+    }
+
+    @Test
+    public void whenSerializingUsingJsonInclude_thenCorrect() throws JsonProcessingException, IOException {
+        final MyBean bean = new MyBean(1, null);
+
+        final String result = new ObjectMapper().writeValueAsString(bean);
+        assertThat(result, containsString("1"));
+        assertThat(result, not(containsString("name")));
+    }
+
+    @Test
+    public void whenSerializingUsingJsonAutoDetect_thenCorrect() throws JsonProcessingException, IOException {
+        final PrivateBean bean = new PrivateBean(1, "My bean");
+
+        final String result = new ObjectMapper().writeValueAsString(bean);
+        assertThat(result, containsString("1"));
+        assertThat(result, containsString("My bean"));
+    }
+
+    // ========================= Polymorphic annotations ============================
+
+    @Test
+    public void whenSerializingPolymorphic_thenCorrect() throws JsonProcessingException, IOException {
+        final Zoo.Dog dog = new Zoo.Dog("lacy");
+        final Zoo zoo = new Zoo(dog);
+
+        final String result = new ObjectMapper().writeValueAsString(zoo);
+
+        assertThat(result, containsString("type"));
+        assertThat(result, containsString("dog"));
+    }
+
+    @Test
+    public void whenDeserializingPolymorphic_thenCorrect() throws JsonProcessingException, IOException {
+        final String json = "{\"animal\":{\"name\":\"lacy\",\"type\":\"cat\"}}";
+
+        final Zoo zoo = new ObjectMapper().reader().withType(Zoo.class).readValue(json);
+
+        assertEquals("lacy", zoo.animal.name);
+        assertEquals(Zoo.Cat.class, zoo.animal.getClass());
+    }
+    // ========================= General annotations ============================
+
+    @Test
+    public void whenUsingJsonProperty_thenCorrect() throws IOException {
+        final BeanWithGetter bean = new BeanWithGetter(1, "My bean");
+
+        final String result = new ObjectMapper().writeValueAsString(bean);
+        assertThat(result, containsString("My bean"));
+        assertThat(result, containsString("1"));
+
+        final BeanWithGetter resultBean = new ObjectMapper().reader(BeanWithGetter.class).readValue(result);
+        assertEquals("My bean", resultBean.getTheName());
+    }
+
+    @Test
+    public void whenSerializingUsingJsonFormat_thenCorrect() throws JsonProcessingException, ParseException {
+        final SimpleDateFormat df = new SimpleDateFormat("dd-MM-yyyy hh:mm:ss");
+        df.setTimeZone(TimeZone.getTimeZone("UTC"));
+
+        final String toParse = "20-12-2014 02:30:00";
+        final Date date = df.parse(toParse);
+        final EventWithFormat event = new EventWithFormat("party", date);
+
+        final String result = new ObjectMapper().writeValueAsString(event);
+        assertThat(result, containsString(toParse));
+    }
+
+    @Test
+    public void whenSerializingUsingJsonUnwrapped_thenCorrect() throws JsonProcessingException, ParseException {
+        final UnwrappedUser.Name name = new UnwrappedUser.Name("John", "Doe");
+        final UnwrappedUser user = new UnwrappedUser(1, name);
+
+        final String result = new ObjectMapper().writeValueAsString(user);
+        assertThat(result, containsString("John"));
+        assertThat(result, not(containsString("name")));
+    }
+
+    @Test
+    public void whenSerializingUsingJsonView_thenCorrect() throws JsonProcessingException {
+        final Item item = new Item(2, "book", "John");
+
+        final String result = new ObjectMapper().writerWithView(Views.Public.class).writeValueAsString(item);
+
+        assertThat(result, containsString("book"));
+        assertThat(result, containsString("2"));
+        assertThat(result, not(containsString("John")));
+    }
+
+    @Test
+    public void whenSerializingUsingJacksonReferenceAnnotation_thenCorrect() throws JsonProcessingException {
+        final UserWithRef user = new UserWithRef(1, "John");
+        final ItemWithRef item = new ItemWithRef(2, "book", user);
+        user.addItem(item);
+
+        final String result = new ObjectMapper().writeValueAsString(item);
+
+        assertThat(result, containsString("book"));
+        assertThat(result, containsString("John"));
+        assertThat(result, not(containsString("userItems")));
+    }
+
+    @Test
+    public void whenSerializingUsingJsonIdentityInfo_thenCorrect() throws JsonProcessingException {
+        final UserWithIdentity user = new UserWithIdentity(1, "John");
+        final ItemWithIdentity item = new ItemWithIdentity(2, "book", user);
+        user.addItem(item);
+
+        final String result = new ObjectMapper().writeValueAsString(item);
+
+        assertThat(result, containsString("book"));
+        assertThat(result, containsString("John"));
+        assertThat(result, containsString("userItems"));
+    }
+
+    @Test
+    public void whenSerializingUsingJsonFilter_thenCorrect() throws JsonProcessingException {
+        final BeanWithFilter bean = new BeanWithFilter(1, "My bean");
+
+        final FilterProvider filters = new SimpleFilterProvider().addFilter("myFilter", SimpleBeanPropertyFilter.filterOutAllExcept("name"));
+
+        final String result = new ObjectMapper().writer(filters).writeValueAsString(bean);
+
+        assertThat(result, containsString("My bean"));
+        assertThat(result, not(containsString("id")));
+    }
+
+    // =========================
+    @Test
+    public void whenSerializingUsingCustomAnnotation_thenCorrect() throws JsonProcessingException {
+        final BeanWithCustomAnnotation bean = new BeanWithCustomAnnotation(1, "My bean", null);
+
+        final String result = new ObjectMapper().writeValueAsString(bean);
+
+        assertThat(result, containsString("My bean"));
+        assertThat(result, containsString("1"));
+        assertThat(result, not(containsString("dateCreated")));
+    }
+
+    @Test
+    public void whenSerializingUsingMixInAnnotation_thenCorrect() throws JsonProcessingException {
+        final User user = new User(1, "John");
+
+        String result = new ObjectMapper().writeValueAsString(user);
+        assertThat(result, containsString("John"));
+
+        final ObjectMapper mapper = new ObjectMapper();
+        mapper.addMixInAnnotations(String.class, MyMixInForString.class);
+
+        result = mapper.writeValueAsString(user);
+        assertThat(result, not(containsString("John")));
+    }
+
+    @Test
+    public void whenDisablingAllAnnotations_thenAllDisabled() throws JsonProcessingException, IOException {
+        final MyBean bean = new MyBean(1, null);
+
+        final ObjectMapper mapper = new ObjectMapper();
+        mapper.disable(MapperFeature.USE_ANNOTATIONS);
+
+        final String result = mapper.writeValueAsString(bean);
+        assertThat(result, containsString("1"));
+        assertThat(result, containsString("name"));
+    }
+
+}