How to use

getInstance

method

in

toothpick.ScopeImpl

@Override
public <T> T getInstance(Class<T> clazz) {
 return getInstance(clazz, null);
}

@Test(expected = IllegalStateException.class)
public void getInstance_shouldFail_whenScopeIsClosed() {
 //GIVEN
 ScopeImpl scope = new ScopeImpl("");
 //WHEN
 scope.close();
 scope.getInstance(Foo.class);
 //THEN
}

@Test
public void reset_shouldRebindScope() throws Exception {
 //GIVEN
 ScopeImpl scope = new ScopeImpl("root");
 //WHEN
 scope.reset();
 //THEN
 assertThat(scope.getInstance(Scope.class), notNullValue());
}

@Test
public void installOverrideModules_shouldNotOverrideOtherBindings() {
 //GIVEN
 Foo testFoo = new Foo();
 ScopeImpl scope = new ScopeImpl("");
 scope.installTestModules(new TestModule(testFoo));
 scope.installModules(new ProdModule2());
 //WHEN
 Foo fooInstance = scope.getInstance(Foo.class);
 Bar barInstance = scope.getInstance(Bar.class);
 //THEN
 assertThat(fooInstance, sameInstance(testFoo));
 assertThat(barInstance, notNullValue());
}

@Test
public void installOverrideModules_shouldNotInstallOverrideBindings_whenCalledWithoutTestModules() {
 //GIVEN
 ScopeImpl scope = new ScopeImpl("");
 scope.installTestModules();
 scope.installModules(new ProdModule());
 //WHEN
 Foo instance = scope.getInstance(Foo.class);
 //THEN
 assertThat(instance, notNullValue());
}

@Override
public <T> T getInstance(Class<T> clazz) {
 return getInstance(clazz, null);
}

@Test(expected = NoFactoryFoundException.class)
public void reset_shouldResetBoundProviders_andFlagTheTestModuleToFalse() throws Exception {
 //GIVEN
 ScopeImpl scope = new ScopeImpl("root");
 scope.installTestModules(new Module() { {
  bind(IFoo.class).to(Foo.class);
 } });
 //WHEN
 scope.reset();
 //THEN
 scope.installTestModules(); // Should not crash
 scope.getInstance(IFoo.class); // Should crash as we don't have the binding for IFoo anymore
}

@Test
public void testToString() {
 //GIVEN
 ScopeImpl scope = new ScopeImpl("root");
 scope.installModules(new TestModule1());
 ScopeImpl childScope = new ScopeImpl("child");
 scope.addChild(childScope);
 //WHEN
 childScope.getInstance(Bar.class);
 String dump = scope.toString();
 //THEN
 Pattern expected = Pattern.compile("root:\\d+.*"
   + "Providers: \\[toothpick.Scope,toothpick.data.Foo\\].*"
   + "\\\\---child:\\d+.*"
   + "Providers:.*\\[toothpick.Scope\\].*"
   + "Unbound providers: \\[toothpick.data.Bar\\].*", Pattern.DOTALL);
 assertThat(dump, MatchesPattern.matchesPattern(expected));
}

@Test
public void installTestModules_shouldOverrideBindings_whenInstalledAfterProductionModules() {
 //GIVEN
 Foo testFoo = new Foo();
 ScopeImpl scope = new ScopeImpl("");
 scope.installModules(new ProdModule());
 scope.installTestModules(new TestModule(testFoo));
 //WHEN
 Foo instance = scope.getInstance(Foo.class);
 //THEN
 assertThat(instance, sameInstance(testFoo));
}

@Test
public void installOverrideModules_shouldInstallOverrideBindings_whenCalledOnce() {
 //GIVEN
 Foo testFoo = new Foo();
 ScopeImpl scope = new ScopeImpl("");
 scope.installTestModules(new TestModule(testFoo));
 scope.installModules(new ProdModule());
 //WHEN
 Foo instance = scope.getInstance(Foo.class);
 //THEN
 assertThat(instance, sameInstance(testFoo));
}