Package dev.restate.sdk.fake

Class FakeRestate

java.lang.Object

dev.restate.sdk.fake.FakeRestate

@Experimental
public final class FakeRestate
extends Object

Fake Restate environment for testing handlers using the new reflection API.

This class provides utility methods to execute service methods that use the new reflection API (without explicit Context parameters) in a fake Restate context for testing purposes.

Example usage:

 @Test
 public void testGreeter() {
     GreeterService greeter = new GreeterService();

     // Execute the service method in a fake Restate context
     String response = FakeRestate.execute(() -> greeter.greet(new Greeting("Francesco")));

     assertEquals("You said hi to Francesco!", response);
 }
 

For advanced scenarios, you can customize the context behavior using ContextExpectations:

 @Test
 public void testWithExpectations() {
     GreeterService greeter = new GreeterService();

     ContextExpectations expectations = new ContextExpectations()
         .withRandom(new Random(42));

     String response = FakeRestate.execute(expectations, () -> greeter.greet(new Greeting("Alice")));

     assertEquals("Expected response", response);
 }
 

Constructor Summary

Constructors

Constructor	Description
FakeRestate()

Method Summary

Modifier and Type	Method	Description
static void	execute(ThrowingRunnable runnable)	Execute a runnable in a fake Restate context with default expectations.
static <T> T	execute(ThrowingSupplier<T> runnable)	Execute a supplier in a fake Restate context with default expectations and return the result.
static void	execute(ContextExpectations expectations, ThrowingRunnable runnable)	Execute a runnable in a fake Restate context with custom expectations.
static <T> T	execute(ContextExpectations expectations, ThrowingSupplier<T> runnable)	Execute a supplier in a fake Restate context with custom expectations and return the result.

Methods inherited from class java.lang.Object

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

Constructor Details

FakeRestate

public FakeRestate()

Method Details

execute

public static void execute(ThrowingRunnable runnable)

Execute a runnable in a fake Restate context with default expectations.

Parameters:

runnable - the code to execute

execute

public static void execute(ContextExpectations expectations,
 ThrowingRunnable runnable)

Execute a runnable in a fake Restate context with custom expectations.

Parameters:

expectations - the context expectations to use

runnable - the code to execute

execute

public static <T> T execute(ThrowingSupplier<T> runnable)

Execute a supplier in a fake Restate context with default expectations and return the result.

Type Parameters:

T - the return type

Parameters:

runnable - the code to execute

Returns:

the result of the supplier

execute

public static <T> T execute(ContextExpectations expectations,
 ThrowingSupplier<T> runnable)

Execute a supplier in a fake Restate context with custom expectations and return the result.

Type Parameters:

T - the return type

Parameters:

expectations - the context expectations to use

runnable - the code to execute

Returns:

the result of the supplier