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impl.setSecurityDao(mockSecurityDao); impl.setUserAccountDao(mockUserAccountDao); impl.setSecurityDao(mockSecurityDao); impl.setUserAccountDao(mockUserAccountDao); this.service = impl; } public void testFindUser() { // Prepare test data final String username = "test"; final UserAccount account = new UserAccount(username); // Script the mock object's expectations expect(mockUserAccountDao.read(username)).andReturn(account); replay(mockUserAccountDao); // Run the test. The mock object will fail the test if its // script is not followed. final UserAccount actualAccount = service.findUser(username); verify(mockUserAccountDao); assertTrue(actualAccount == account); } public void testCreateUser() { // Prepare test data final String username = "test"; final UserAccount account = new UserAccount(username); final AcegiUserDetails acegi = new AcegiUserDetails(account,"password"); // Script the test expect(mockSecurityDao.createUser(account)).andReturn(acegi); replay(mockSecurityDao); // Run the test service.createUser(account); verify(mockSecurityDao); } public void testDeleteUser() { final String username = "test"; final UserAccount account = new UserAccount(username);

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Vector3.Clamp: Constrains the vector components into a given range useful when defining lights or matrices values that support only values within a given range. Vector3.Lerp: Calculates the linear interpolation between two vectors. Vector3.SmoothStep: Interpolates two vectors according to a float given as a weight value. Additionally, Vector3 offers a series of shortcuts for special vectors, such as Vector.Zero for an empty vector, Vector3.Up for the (0, 1, 0) vector, Vector3.Right for the (1, 0, 0) vector, and others. Vector2 and Vector4 provide similar methods and shortcuts. Many of these methods and shortcuts are used when defining matrices and executing 3D operations.

mockSecurityDao.deleteUser(account); replay(mockSecurityDao); service.deleteUser(account); verify(mockSecurityDao); } public void testUpdateUser() { final String username = "test"; final UserAccount account = new UserAccount(username); mockUserAccountDao.update(account); replay(mockUserAccountDao); service.updateUser(account); verify(mockUserAccountDao); } public void testListUsers() { final String username = "test"; final UserAccount account = new UserAccount(username); final List<UserAccount> accounts = new ArrayList<UserAccount>(); accounts.add(account); expect(mockUserAccountDao.list()).andReturn(accounts); replay(mockUserAccountDao); final List<UserAccount> actual = service.listUsers(); verify(mockUserAccountDao); assertNotNull(actual); assertEquals(1,actual.size()); assertEquals(account,actual.get(0)); } } No additional mock objects needed to be created. EasyMock generates all of the mock classes that we require. Rather than inheriting from a special base class to gain access to the EasyMock methods, we make static calls into an EasyMock utility class. These methods are statically imported a Java 5 feature highlighted in bold to remove the need to explicitly reference the EasyMock class. The service implementation requires access to a UserAccountDao implementation and a SecurityDao implementation. Both of these are created by calling the EasyMock createMock

Matrices are the basis for defining rotation, scaling, and translation of an object in the 3D world. Because matrices are used to define any 3D transformations, they are also used to define the operations needed to simulate the projections (discussed earlier in the chapter) and to transform the 3D scene according to the camera position and facing direction. You ll see examples of each of these uses when creating your sample program. For now, let s see the use of transformation matrices to do a simple translation, and then extrapolate the idea for more complex operations. This will help you understand the importance of the use of matrices in 3D programs. Suppose you want to move a triangle up the y axis, as shown in Figure 8-11.

method on the class types in the setUp method. The setUp method also creates the service instance to be tested and assigns these mock controls to it. Each of the test methods follows the same basic outline: the test data is prepared, the mock controls are scripted, the service method is invoked, and the expectations are checked. Two parts of this process require further explanation. The scripting of the mock controls (the mock DAOs) is carried out by executing methods on the mock object itself. Listing 10-25 shows an example from the testFindUser() method.

Figure 8-11. Moving a triangle on the y axis Let s assume that the coordinates of the triangle vertices are as follows:

// Script the mock object's expectations expect(mockUserAccountDao.read(username)).andReturn(account); replay(mockUserAccountDao); The call to the read() method on the mock UserAccountDao object informs the control that when the service call is made, we will expect it to invoke this method on the DAO (exactly what you see in Listing 10-23). This is wrapped in an expect() method call that allows us to specify what the mock object will actually return when this is done (an instance of the account object). The mock object starts out in a scripting mode that allows these method calls to be defined. The call to replay() at the end of Listing 10-25 then switches the control into a mode where it matches subsequent calls against the script established in Listing 10-24. A call to the read() method will now return the specified account object. As shown in Listing 10-26, we now make a call to the service itself.

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