Examples of org.apache.tapestry5.services.Environment

org.apache.tapestry5.services.Environment
Provides access to environment objects, which are almost always provided to enclosed components by enclosing components. Environmental services are a form of very late binding.
The Environment acts like a collection of stacks. Each stack contains environmental objects of a given type. Most often, a stack has zero or one elements, but on occasion, a particular component will push an override onto the stack for the benefit of the components it encloses. @see org.apache.tapestry5.annotations.Environmental @see org.apache.tapestry5.services.EnvironmentalShadowBuilder

    }


    @Test
    public void push_and_pop()
    {
        Environment e = new EnvironmentImpl();
        Runnable r1 = mockRunnable();
        Runnable r2 = mockRunnable();


        replay();


        assertNull(e.push(Runnable.class, r1));


        assertSame(r1, e.peek(Runnable.class));


        assertSame(r1, e.push(Runnable.class, r2));


        assertSame(r2, e.peek(Runnable.class));


        assertSame(r2, e.pop(Runnable.class));
        assertSame(r1, e.pop(Runnable.class));


        verify();
    }

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    }


    @Test
    public void clear()
    {
        Environment e = new EnvironmentImpl();


        try
        {
            e.clear();
            unreachable();
        } catch (IllegalStateException ex)
        {
            assertMessageContains(ex, "no longer supported");
        }

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    }


    @Test
    public void pop_when_empty_is_error()
    {
        Environment e = new EnvironmentImpl();


        try
        {
            e.pop(Runnable.class);
            unreachable();
        } catch (NoSuchElementException ex)
        {
        }
    }

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    }


    @Test
    public void peek_required_when_available()
    {
        Environment e = new EnvironmentImpl();
        Location l = mockLocation();


        replay();


        e.push(Location.class, l);


        assertSame(l, e.peekRequired(Location.class));


        verify();
    }

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    }


    @Test
    public void peek_required_without_value_is_error()
    {
        Environment e = new EnvironmentImpl();
        Location l = mockLocation();
        Component c = mockComponent();


        replay();


        e.push(Location.class, l);
        e.push(Component.class, c);


        try
        {
            e.peekRequired(List.class);
            unreachable();
        } catch (UnknownValueException ex)
        {
            assertEquals(
                    ex.getMessage(),

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{
    @Test
    public void proxy_class()
    {
        JavaScriptSupport delegate = newMock(JavaScriptSupport.class);
        Environment env = mockEnvironment();


        train_peekRequired(env, JavaScriptSupport.class, delegate);


        expect(delegate.allocateClientId("fred")).andReturn("barney");

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        BeanModelSource source = mockBeanModelSource();
        BeanModel model = mockBeanModel();
        RegistrationData data = new RegistrationData();
        Messages messages = mockMessages();
        PropertyOverrides overrides = mockPropertyOverrides();
        Environment env = EasyMock.createNiceMock(Environment.class);


        train_getBoundType(resources, "object", RegistrationData.class);


        train_create(source, RegistrationData.class, true, messages, model);

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        BeanModel model = mockBeanModel();
        Location l = mockLocation();
        Throwable exception = new RuntimeException("Fall down go boom.");
        PropertyOverrides overrides = mockPropertyOverrides();
        Messages messages = mockMessages();
        Environment env = EasyMock.createNiceMock(Environment.class);


        train_getOverrideMessages(overrides, messages);


        train_getBoundType(resources, "object", Runnable.class);

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    public void beaneditcontext_pushed_to_environment() 
    {
        ComponentResources resources = mockComponentResources();
        BeanModelSource source = mockBeanModelSource();
        BeanModel model = mockBeanModel();
        Environment env = mockEnvironment();
        RegistrationData data = new RegistrationData();
        Messages messages = mockMessages();
        PropertyOverrides overrides = mockPropertyOverrides();


        train_getBoundType(resources, "object", RegistrationData.class);


        train_create(source, RegistrationData.class, true, messages, model);


        train_getOverrideMessages(overrides, messages);
        
        expect(model.newInstance()).andReturn(data);
        expect(model.getBeanType()).andReturn(RegistrationData.class);


        BeanEditContext ctxt = new BeanEditContext()
        {
            public Class<?> getBeanClass()
            {
                return RegistrationData.class;
            }


            public <T extends Annotation> T getAnnotation(Class<T> type)
            {
                return null;
            }
        };


        expect(env.push(EasyMock.eq(BeanEditContext.class), contextEq())).andReturn(ctxt);
        replay();


        BeanEditor component = new BeanEditor();


        component.inject(resources, overrides, source,env);

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    @Test
    public void beaneditcontext_popped_from_environment() 
    {
        ComponentResources resources = mockComponentResources();
        BeanModelSource source = mockBeanModelSource();
        Environment env = mockEnvironment();
        PropertyOverrides overrides = mockPropertyOverrides();


        expect(env.pop(BeanEditContext.class)).andReturn(null);
        
        replay();


        BeanEditor component = new BeanEditor();

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