org.easymock
Interface IMockBuilder<T>

Type Parameters:

T - type of the object being created

All Known Implementing Classes:

MockBuilder

public interface IMockBuilder<T>

Helps the creation of partial mocks with EasyMock.

Example of usage:

 public class MyClass {
     public MyClass(A a, B b) {
     }
 }
 
 public class MyClassTest {
     @Test
     public void testFoo() throws Exception {
         IMocksControl mockControl = createControl();
         A a = mockControl.createMock(A.class);
         B b = mockControl.createMock(B.class);
 
         MyClass myClass = createMockBuilder(MyClass.class)
                 .withConstructor(a, b).createMock(mockControl);
 
         // Set the expectations of A and B and test some method in MyClass
     }
 }
 

This class also has support for partial mocks as shown by the example below:

 public class MyMockedClass {
     // Empty class is also valid for IMockBuilder.
     public MyMockedClass() {
     }
 
     public void foo(int a) {
         blah(a);
         bleh();
     }
 
     public void blah(int a) {
     }
 
     public void bleh() {
     }
 }
 
 public class MyMockedClassTest {
     @Test
     public void testFoo() throws Exception {
         MyMockedClass myMockedClass = createMockBuilder(MyMockedClass.class)
                 .withConstructor().addMockedMethod("blah", int.class)
                 .addMockedMethod("bleh").createMock();
 
         // These are the expectations.
         myMockedClass.blah(1);
         myMockedClass.bleh();
         replay(myMockedClass);
 
         myMockedClass.foo(1);
         verify(myMockedClass);
     }
 }
 

Warning: There may be ambiguities when there are two different constructors with compatible types. For instance:

 public class A {
 }
 
 public class B extends A {
 }
 
 public class ClassWithAmbiguity {
     public ClassWithAmbiguity(A a) {
     }
 
     public ClassWithAmbiguity(B b) {
     }
 }
 

will cause problems if using withConstructor(Object...). To solve this, you can explicitly define the constructor parameter types to use by calling withConstructor(Class...) and then withArgs(Object...), like this:

 createMockBuilder(MyMockedClass.class).withConstructor(A.class).withArgs(
         new A()).createMock();
 

Author:

Henri Tremblay

Method Summary

IMockBuilder<T>	addMockedMethod(Method method) Adds a method to be mocked in the testing class.
IMockBuilder<T>	addMockedMethod(String methodName) Adds a method to be mocked in the testing class.
IMockBuilder<T>	addMockedMethod(String methodName, Class<?>... parameterTypes) Adds a method to be mocked in the testing class.
IMockBuilder<T>	addMockedMethods(Method... methods) Adds methods to be mocked in the testing class.
IMockBuilder<T>	addMockedMethods(String... methodNames) Adds methods to be mocked in the testing class.
T	createMock() Create a default mock from this builder.
T	createMock(IMocksControl control) Create mock from the provided mock control using the arguments passed to the builder.
T	createMock(String name) Create named mock from the provided mock control using the arguments passed to the builder.
T	createMock(String name, IMocksControl control) Create named mock from the provided mock control using the arguments passed to the builder.
T	createNiceMock() Create a nice mock from this builder.
T	createNiceMock(String name) Create a named nice mock from this builder.
T	createStrictMock() Create a strict mock from this builder.
T	createStrictMock(String name) Create a named strict mock from this builder.
IMockBuilder<T>	withArgs(Object... initArgs) Defines the arguments to be passed to the constructor of the class.
IMockBuilder<T>	withConstructor() Defines the empty constructor should be called.
IMockBuilder<T>	withConstructor(Class<?>... argTypes) Defines the exact argument types for the constructor to use.
IMockBuilder<T>	withConstructor(Constructor<?> constructor) Defines the constructor to use to instantiate the mock.
IMockBuilder<T>	withConstructor(Object... initArgs) Defines the constructor parameters for the mocked class.

Method Detail

addMockedMethod

IMockBuilder<T> addMockedMethod(Method method)

Adds a method to be mocked in the testing class. Each call will add a new method to the result mock. The method is searched for in the class itself as well as superclasses.

Parameters:

method - method to be mocked

Returns:

this

addMockedMethod

IMockBuilder<T> addMockedMethod(String methodName)

Adds a method to be mocked in the testing class. Each call will add a new method to the result mock. The method is searched for in the class itself as well as superclasses. There must be no overload of the method. You will have to rely on the other addMockedMethods in this class if that is the case.

Parameters:

methodName - name of the method to be mocked

Returns:

this

addMockedMethod

IMockBuilder<T> addMockedMethod(String methodName,
                                Class<?>... parameterTypes)

Adds a method to be mocked in the testing class. Each call will add a new method to the result mock. The method is searched for in the class itself as well as superclasses.

Parameters:

methodName - name of the method to be mocked

parameterTypes - types of the parameters of the method

Returns:

this

addMockedMethods

IMockBuilder<T> addMockedMethods(String... methodNames)

Adds methods to be mocked in the testing class. Same as addMockedMethod(String) but to mock many methods at once.

Parameters:

methodNames - names of the methods to be mocked

Returns:

this

addMockedMethods

IMockBuilder<T> addMockedMethods(Method... methods)

Adds methods to be mocked in the testing class. Same as addMockedMethod(Method) but to mock many methods at once.

Parameters:

methods - methods to be mocked

Returns:

this

withConstructor

IMockBuilder<T> withConstructor(Constructor<?> constructor)

Defines the constructor to use to instantiate the mock. It is expected that you call withArgs(java.lang.Object...) with the actual constructor argument values after this.

Parameters:

constructor - the constructor to be called

Returns:

this

withConstructor

IMockBuilder<T> withConstructor()

Defines the empty constructor should be called.

Returns:

this

withConstructor

IMockBuilder<T> withConstructor(Object... initArgs)

Defines the constructor parameters for the mocked class. The builder will automatically find a constructor with compatible argument types. This throws an exception if there is more than one constructor which would accept the given parameters.

Parameters:

initArgs - arguments of the constructor

Returns:

this

withConstructor

IMockBuilder<T> withConstructor(Class<?>... argTypes)

Defines the exact argument types for the constructor to use. It is expected that you call withArgs(java.lang.Object...) with the actual constructor argument values after this.

Parameters:

argTypes - the exact argument types of the constructor

Returns:

this

withArgs

IMockBuilder<T> withArgs(Object... initArgs)

Defines the arguments to be passed to the constructor of the class. The types of the arguments must match those previously defined with withConstructor(Class...) or withConstructor(Constructor).

Parameters:

initArgs - the arguments to pass to the constructor

Returns:

this

createStrictMock

T createStrictMock()

Create a strict mock from this builder. The same builder can be called to create multiple mocks.

Returns:

the newly created mock

createMock

T createMock()

Create a default mock from this builder. The same builder can be called to create multiple mocks.

Returns:

the newly created mock

createNiceMock

T createNiceMock()

Create a nice mock from this builder. The same builder can be called to create multiple mocks.

Returns:

the newly created mock

createMock

T createMock(IMocksControl control)

Create mock from the provided mock control using the arguments passed to the builder.

Parameters:

control - IMocksControl used to create the object

Returns:

the newly created mock

createStrictMock

T createStrictMock(String name)

Create a named strict mock from this builder. The same builder can be called to create multiple mocks.

Parameters:

name - the mock name

Returns:

the newly created mock

createMock

T createMock(String name)

Create named mock from the provided mock control using the arguments passed to the builder.

Parameters:

name - the mock name

Returns:

the newly created mock

createNiceMock

T createNiceMock(String name)

Create a named nice mock from this builder. The same builder can be called to create multiple mocks.

Parameters:

name - the mock name

Returns:

the newly created mock

createMock

T createMock(String name,
             IMocksControl control)

Create named mock from the provided mock control using the arguments passed to the builder.

Parameters:

name - the mock name

control - IMocksControl used to create the object

Returns:

the newly created mock