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src/test/java/tools/jackson/failing/BeanDeserializerModifier4356Test.java
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package tools.jackson.failing; | ||
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import java.util.Iterator; | ||
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import org.junit.jupiter.api.Test; | ||
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import com.fasterxml.jackson.annotation.JsonCreator; | ||
import com.fasterxml.jackson.annotation.JsonProperty; | ||
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import tools.jackson.core.*; | ||
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import tools.jackson.databind.*; | ||
import tools.jackson.databind.deser.BeanDeserializerBuilder; | ||
import tools.jackson.databind.deser.SettableBeanProperty; | ||
import tools.jackson.databind.deser.ValueDeserializerModifier; | ||
import tools.jackson.databind.module.SimpleModule; | ||
import tools.jackson.databind.testutil.DatabindTestUtil; | ||
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import static org.junit.jupiter.api.Assertions.assertEquals; | ||
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// [databind#4356] | ||
public class BeanDeserializerModifier4356Test | ||
extends DatabindTestUtil | ||
{ | ||
static class MutableBean4356 { | ||
String a; | ||
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public String getA() { | ||
return a; | ||
} | ||
public void setA(String a) { | ||
this.a = a; | ||
} | ||
} | ||
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static class ImmutableBean4356 { | ||
final String a; | ||
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@JsonCreator | ||
public ImmutableBean4356(@JsonProperty("a") String a) { | ||
this.a = a; | ||
} | ||
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public String getA() { | ||
return a; | ||
} | ||
} | ||
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@SuppressWarnings("serial") | ||
static SimpleModule getSimpleModuleWithDeserializerModifier() { | ||
return new SimpleModule().setDeserializerModifier(new ValueDeserializerModifier() { | ||
@Override | ||
public BeanDeserializerBuilder updateBuilder(DeserializationConfig config, BeanDescription beanDesc, BeanDeserializerBuilder builder) { | ||
for (Iterator<SettableBeanProperty> properties = builder.getProperties(); properties.hasNext();) { | ||
SettableBeanProperty property = properties.next(); | ||
if (property.getName().equals("a")) { | ||
builder.addOrReplaceProperty(property.withValueDeserializer(new ConvertingStringDeserializer()), true); | ||
} | ||
} | ||
return builder; | ||
} | ||
}); | ||
} | ||
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static final String CUSTOM_DESERIALIZER_VALUE = "Custom deserializer value"; | ||
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static class ConvertingStringDeserializer extends ValueDeserializer<String> { | ||
@Override | ||
public String deserialize(JsonParser p, DeserializationContext ctxt) { | ||
p.skipChildren(); | ||
return CUSTOM_DESERIALIZER_VALUE; | ||
} | ||
} | ||
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private final ObjectMapper MAPPER = jsonMapperBuilder().addModule(getSimpleModuleWithDeserializerModifier()).build(); | ||
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@Test // passes | ||
public void testMutableBeanUpdateBuilder() throws Exception { | ||
MutableBean4356 recreatedBean = MAPPER.readValue("{\"a\": \"Some value\"}", | ||
MutableBean4356.class); | ||
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assertEquals(CUSTOM_DESERIALIZER_VALUE, recreatedBean.getA()); | ||
} | ||
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@Test // Fails without fix | ||
public void testImmutableBeanUpdateBuilder() throws Exception { | ||
ImmutableBean4356 recreatedBean = MAPPER.readValue("{\"a\": \"Some value\"}", | ||
ImmutableBean4356.class); | ||
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assertEquals(CUSTOM_DESERIALIZER_VALUE, recreatedBean.getA()); | ||
} | ||
} |