public void testReturnsEmptyArrayForAllArrayTypes() throws Throwable {
int[] defaultArrayForPrimitiveType = (int[]) stub.invoke(invocationReturning(int[].class));
assertEquals("should be empty array", 0, defaultArrayForPrimitiveType.length);
Object[] defaultArrayForReferenceType =
(Object[]) stub.invoke(invocationReturning(Object[].class));
assertEquals("should be empty array", 0, defaultArrayForReferenceType.length);
}
public void assertHasRegisteredValue(
DefaultResultStub defaultResultStub, Class resultType, Object resultValue) throws Throwable {
assertEquals(
"expected " + resultValue + " to be returned",
resultValue,
defaultResultStub.invoke(invocationReturning(resultType)));
}
public void testDefaultResultsCanBeExplicitlyOverriddenByType() throws Throwable {
int newDefaultIntResult = 20;
String newDefaultStringResult = "hello";
stub.addResult(String.class, newDefaultStringResult);
stub.addResult(int.class, new Integer(newDefaultIntResult));
assertEquals(
"expected registered value for string result type",
newDefaultStringResult,
stub.invoke(invocationReturning(String.class)));
assertEquals(
"expected registered value for int result type",
new Integer(newDefaultIntResult),
stub.invoke(invocationReturning(int.class)));
}
public void testAnExplicitlyRegisteredResultOverridesThePreviousResultForTheSameType()
throws Throwable {
stub.addResult(String.class, "result1");
stub.addResult(String.class, "result2");
assertEquals(
"expected second result", "result2", stub.invoke(invocationReturning(String.class)));
}
public void assertHasNotRegisteredReturnType(
DefaultResultStub defaultResultStub, Class resultType) throws Throwable {
try {
defaultResultStub.invoke(invocationReturning(resultType));
fail("stub should not support return type " + resultType);
} catch (AssertionFailedError expected) {
return;
}
}
// Inspired by http://www.c2.com/cgi/wiki?JavaNullProxy
public void testReturnsProxyOfNewMockObjectWithSameDefaultResultStubForInterfaceTypes()
throws Throwable {
int intResult = -1;
stub.addResult(int.class, new Integer(intResult));
InterfaceType result = (InterfaceType) stub.invoke(invocationReturning(InterfaceType.class));
assertEquals("int result from 'null' interface implementation", intResult, result.returnInt());
}
public void testInvocationWithAnUnregisteredReturnTypeCausesAnAssertionFailedError()
throws Throwable {
Class unsupportedReturnType = UnsupportedReturnType.class;
Class[] supportedReturnTypes = {
boolean.class,
byte.class,
char.class,
short.class,
int.class,
long.class,
float.class,
double.class,
Boolean.class,
Byte.class,
Character.class,
Short.class,
Integer.class,
Long.class,
Float.class,
Double.class,
String.class
};
try {
stub.invoke(invocationReturning(unsupportedReturnType));
} catch (AssertionFailedError ex) {
String message = ex.getMessage();
AssertMo.assertIncludes(
"message should include name of unsupported type",
unsupportedReturnType.getName(),
message);
for (int i = 0; i < supportedReturnTypes.length; i++) {
AssertMo.assertIncludes(
"message should include names of expected types",
supportedReturnTypes[i].getName(),
message);
}
return;
}
fail("should have failed");
}
public void testReturnsUsefulDefaultResultsForBasicTypes() throws Throwable {
assertHasRegisteredValue(stub, boolean.class, Boolean.FALSE);
assertHasRegisteredValue(stub, void.class, null);
assertHasRegisteredValue(stub, byte.class, new Byte((byte) 0));
assertHasRegisteredValue(stub, short.class, new Short((short) 0));
assertHasRegisteredValue(stub, int.class, new Integer(0));
assertHasRegisteredValue(stub, long.class, new Long(0L));
assertHasRegisteredValue(stub, char.class, new Character('\0'));
assertHasRegisteredValue(stub, float.class, new Float(0.0F));
assertHasRegisteredValue(stub, double.class, new Double(0.0));
assertHasRegisteredValue(stub, Boolean.class, Boolean.FALSE);
assertHasRegisteredValue(stub, Byte.class, new Byte((byte) 0));
assertHasRegisteredValue(stub, Short.class, new Short((short) 0));
assertHasRegisteredValue(stub, Integer.class, new Integer(0));
assertHasRegisteredValue(stub, Long.class, new Long(0L));
assertHasRegisteredValue(stub, Character.class, new Character('\0'));
assertHasRegisteredValue(stub, Float.class, new Float(0.0F));
assertHasRegisteredValue(stub, Double.class, new Double(0.0));
assertHasRegisteredValue(stub, String.class, "");
assertNotNull(
"should return an object for Object return type",
stub.invoke(invocationReturning(Object.class)));
}