java-tutorials/ratpack/src/test/java/com/baeldung/AppHttpUnitTest.java

package com.baeldung;

import com.baeldung.model.Employee;
import org.junit.Test;
import ratpack.exec.Promise;
import ratpack.func.Action;
import ratpack.handling.Chain;
import ratpack.handling.Handler;
import ratpack.registry.Registry;
import ratpack.test.embed.EmbeddedApp;
import ratpack.test.exec.ExecHarness;

import static org.junit.Assert.assertEquals;

public class AppHttpUnitTest {

    @Test
    public void givenAnyUri_GetEmployeeFromSameRegistry() throws Exception {
        Handler allHandler = ctx -> {
            Long id = Long.valueOf(ctx.getPathTokens()
                .get("id"));
            Employee employee = new Employee(id, "Mr", "NY");
            ctx.next(Registry.single(Employee.class, employee));
        };
        Handler empNameHandler = ctx -> {
            Employee employee = ctx.get(Employee.class);
            ctx.getResponse()
                .send("Name of employee with ID " + employee.getId() + " is " + employee.getName());
        };
        Handler empTitleHandler = ctx -> {
            Employee employee = ctx.get(Employee.class);
            ctx.getResponse()
                .send("Title of employee with ID " + employee.getId() + " is " + employee.getTitle());
        };

        Action<Chain> chainAction = chain -> chain.prefix("employee/:id", empChain -> {
            empChain.all(allHandler)
                .get("name", empNameHandler)
                .get("title", empTitleHandler);
        });
        EmbeddedApp.fromHandlers(chainAction)
            .test(testHttpClient -> {
                assertEquals("Name of employee with ID 1 is NY", testHttpClient.get("employee/1/name")
                    .getBody()
                    .getText());
                assertEquals("Title of employee with ID 1 is Mr", testHttpClient.get("employee/1/title")
                    .getBody()
                    .getText());
            });
    }

    @Test
    public void givenSyncDataSource_GetDataFromPromise() throws Exception {
        String value = ExecHarness.yieldSingle(execution -> Promise.sync(() -> "Foo"))
            .getValueOrThrow();
        assertEquals("Foo", value);
    }
}