Package org.springframework.boot.test.json

Class GsonTester<T>

java.lang.Object

org.springframework.boot.test.json.AbstractJsonMarshalTester<T>

org.springframework.boot.test.json.GsonTester<T>

Type Parameters:

T - the type under test

public class GsonTester<T>
extends AbstractJsonMarshalTester<T>

AssertJ based JSON tester backed by Gson. Usually instantiated via initFields(Object, Gson), for example:

 public class ExampleObjectJsonTests {

     private GsonTester<ExampleObject> json;

     @Before
     public void setup() {
         Gson gson = new GsonBuilder().create();
         GsonTester.initFields(this, gson);
     }

     @Test
     public void testWriteJson() throws IOException {
         ExampleObject object = //...
         assertThat(json.write(object)).isEqualToJson("expected.json");
     }

 }
 

See AbstractJsonMarshalTester for more details.

Since:

1.4.0

Nested Class Summary

Nested classes/interfaces inherited from class org.springframework.boot.test.json.AbstractJsonMarshalTester

AbstractJsonMarshalTester.FieldInitializer<M>

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	GsonTester(com.google.gson.Gson gson)	Create a new uninitialized GsonTester instance.
	GsonTester(Class<?> resourceLoadClass, org.springframework.core.ResolvableType type, com.google.gson.Gson gson)	Create a new GsonTester instance.

Method Summary

Modifier and Type	Method	Description
static void	initFields(Object testInstance, com.google.gson.Gson gson)	Utility method to initialize GsonTester fields.
static void	initFields(Object testInstance, org.springframework.beans.factory.ObjectFactory<com.google.gson.Gson> gson)	Utility method to initialize GsonTester fields.
protected T	readObject(Reader reader, org.springframework.core.ResolvableType type)	Read from the specified reader to create an object of the specified type.
protected String	writeObject(T value, org.springframework.core.ResolvableType type)	Write the specified object to a JSON string.

Methods inherited from class org.springframework.boot.test.json.AbstractJsonMarshalTester

getJsonContent, getResourceLoadClass, getType, initialize, parse, parse, parseObject, parseObject, read, read, read, read, read, readObject, readObject, readObject, readObject, readObject, readObject, write

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

GsonTester

protected GsonTester(com.google.gson.Gson gson)

Create a new uninitialized GsonTester instance.

Parameters:

gson - the Gson instance

GsonTester

public GsonTester(Class<?> resourceLoadClass,
 org.springframework.core.ResolvableType type,
 com.google.gson.Gson gson)

Create a new GsonTester instance.

Parameters:

resourceLoadClass - the source class used to load resources

type - the type under test

gson - the Gson instance

See Also:

• initFields(Object, Gson)

Method Details

writeObject

protected String writeObject(T value,
 org.springframework.core.ResolvableType type)
                      throws IOException

Description copied from class: AbstractJsonMarshalTester

Write the specified object to a JSON string.

Specified by:

writeObject in class AbstractJsonMarshalTester<T>

Parameters:

value - the source value (never null)

type - the resulting type (never null)

Returns:

the JSON string

Throws:

IOException - on write error

readObject

protected T readObject(Reader reader,
 org.springframework.core.ResolvableType type)
                throws IOException

Description copied from class: AbstractJsonMarshalTester

Read from the specified reader to create an object of the specified type.

Specified by:

readObject in class AbstractJsonMarshalTester<T>

Parameters:

reader - the source reader (never null)

type - the resulting type (never null)

Returns:

the resulting object

Throws:

IOException - on read error

initFields

public static void initFields(Object testInstance,
 com.google.gson.Gson gson)

Utility method to initialize GsonTester fields. See class-level documentation for example usage.

Parameters:

testInstance - the test instance

gson - the Gson instance

initFields

public static void initFields(Object testInstance,
 org.springframework.beans.factory.ObjectFactory<com.google.gson.Gson> gson)

Utility method to initialize GsonTester fields. See class-level documentation for example usage.

Parameters:

testInstance - the test instance

gson - an object factory to create the Gson instance