test: remove MutinyContextServiceWrapper.java

package eu.teraflow.policy;

import context.ContextOuterClass.Device;

import context.ContextOuterClass.DeviceId;

import context.MutinyContextServiceGrpc;

import io.smallrye.mutiny.Uni;

public class MutinyContextServiceWrapper {

    private final MutinyContextServiceGrpc.MutinyContextServiceStub stub;

    public MutinyContextServiceWrapper(MutinyContextServiceGrpc.MutinyContextServiceStub stub) {

        this.stub = stub;

    }

    public Uni<Device> getDevice(DeviceId deviceId) {

        return stub.getDevice(deviceId);

    }

}

class PolicyRuleServiceValidationTest {

    @Inject Serializer serializer;

    private MutinyContextServiceWrapper mutinyContextServiceStub;

    private ContextService contextService;

    private PolicyRuleConditionValidator policyRuleConditionValidator;

    void setUp() {

        contextService = Mockito.mock(ContextService.class);

        policyRuleConditionValidator = new PolicyRuleConditionValidator(contextService);

        mutinyContextServiceStub = Mockito.mock(MutinyContextServiceWrapper.class);

    }

    @Test

    void testIsDeviceIdValid_grpc() {

        String deviceId = "deviceIdGrpc";

        final Device device = createDevice(deviceId);

        final var serializedDevice = serializer.serialize(device);

        final var serializedDeviceId = serializedDevice.getDeviceId();

        when(mutinyContextServiceStub.getDevice(serializedDeviceId))

                .thenReturn(Uni.createFrom().item(serializedDevice));

        Boolean result = policyRuleConditionValidator.isDeviceIdValid(deviceId).await().indefinitely();

        assertThat(result).isEqualTo(true);

    }

    @Test