GuiceWiringTest.java

package jerseyandguice;

import static jerseyandguice.GuicedServletAssertion.assertInstantiablity;
import static jerseyandguice.GuicedServletAssertion.assertProvisioningType;
import static jerseyandguice.GuicedServletAssertion.expose;
import static org.testng.Assert.assertNotNull;

import org.testng.annotations.BeforeClass;
import org.testng.annotations.Test;

import com.google.inject.Injector;
import com.google.inject.ProvisionException;

public class GuiceWiringTest {

  private Injector injector;

  @BeforeClass
  public void guicify() {
    injector = new JGServletContextListener().getInjector();
  }

  @Test
  public void shouldCreateBogoServlet() throws Exception {
    assertInstantiablity(injector, BogoServlet.class);
  }
  
  @Test(expectedExceptions=ProvisionException.class)
  public void shouldFailToCreateDependancyBecauseOfScope() {
    injector.getInstance(Dependancy.class);
  }

  @Test
  public void shouldCreateDependancy() throws Exception {
    assertInstantiablity(injector, Dependancy.class);
  }

  @Test
  public void shouldProvideDefaultDependancyForDependancy() throws Exception {
    assertProvisioningType(injector, Dependancy.class, DefaultDependancy.class);
  }

  @Test
  public void shouldExposeBogoServlet() throws Exception {
    BogoServlet bogoServlet = expose(injector, BogoServlet.class);
    assertNotNull(bogoServlet);
    assertNotNull(bogoServlet.getDependancy());
  }

  @Test
  public void shouldWireDependancyIntoBogoServlet() {
    BogoServlet bogoServlet = (BogoServlet) injector.getInstance(BogoServlet.class);
    assertNotNull(bogoServlet.getDependancy());
  }

  @Test
  public void shouldProvideDependancy() {
    assertNotNull(injector.getProvider(Dependancy.class));
  }

  @Test
  public void shouldProvideBogoServlet() {
    assertNotNull(injector.getProvider(BogoServlet.class));
  }

}