I just read a post discussing loading properties in a Junit
( Loading Properties File In JUnit #BeforeClass )
The properties load seems to work but I am not sure how to reference the specific property in my unit test ...any ideas - I am trying to load the value of the testinput entry in my properties file ?
============================================================
Property file users.properties content :
testinput=D/somefolder/somefile
public class OrderRouterTest2 extends CamelSpringTestSupport {
#Override
protected AbstractXmlApplicationContext createApplicationContext() {
return new ClassPathXmlApplicationContext("META-INF/spring/camel- context.xml");
}
#BeforeClass
public static void setUpBeforeClass() throws Exception {
final Properties props = new Properties();
final InputStream fileIn = OrderRouterTest2.class.getResourceAsStream("/**users.properties**");
**props.load(fileIn)**;
}
#Test
public void testSendToWebService() throws Exception {
// These don't work
String value1 = context.resolvePropertyPlaceholders("{{testinput}}");
String value2 = "I see ${testinput}";
String value3 = "I see {{testinput}}";
}
You should use useOverridePropertiesWithPropertiesComponent from CamelTestSupport, see: https://camel.apache.org/camel-test.html
Ok ...I tried the obvious ...defining the Property object outside of the before class and that worked ...seems like there must another way though to reference that properties object that was loaded in the before class.
Related
I have written this test class to check a service. This is in folder test/java/example/demp/Test.java
#RunWith(MockitoJUnitRunner.class)
#TestPropertySource("classpath:conn.properties")
public class DisplayServiceTest {
#Value("${id}")
private String value;
#Mock
private DisplayRepository DisplayReps;
#InjectMocks
private DisplayService DisplayService;
#Test
public void whenFindAll_thenReturnProductList() {
Menu m = new Menu()
m.setId(value); //when I print value its showing 0
List<Display> expectedDisplay = Arrays.asList(m);
doReturn(expectedDisplay).when(DisplayReps).findAll();
List<Display> actualDisplay = DisplayService.findAll();
assertThat(actualDisplay).isEqualTo(expectedDisplay);
}
My properties file
This is in folder test/resources/conn.properties
id=2
What is the right way to set properties from custom properties file? Cause its not loading values ?
Mockito is a mocking framework, so in general you can't load properties file with Mockito.
Now you've used #TestPropertySource which is a part of Spring Testing and it indeed allows loading properties file (that have nothing to do with mockito though). However using it requires running with SpringRunner and in general its good for integration tests, not for unit tests (Spring Runner among primarily loads Spring's application context).
So if you don't want to use spring here, you should do it "manually". There are many different ways to load Properties file from class path (with getClass().getResourceAsStream() to get the input stream pointing on the resource file and the read it into Properties by using Properties#load(InputStream) for example.
You can also use other thirdparties (not mockito), like apache commons io to read the stream with IOUtils class
If you want to integrate with JUnit 4.x you can even create a rule, described here
#TestPropertySource is a spring annotation, so you need to use the SpringRunner.
You can initialize Mockito using MockitoAnnotations.initMocks(this);, check the example below.
#RunWith(SpringRunner.class)
#TestPropertySource("classpath:conn.properties")
public class DisplayServiceTest {
#Value("${id}")
private String value;
// ...
#Before
public void setup() {
MockitoAnnotations.initMocks(this);
}
// ...
}
You could use just Mockito and JUnit 4. At the #Before method, call MockitoAnnotations.initMocks and load the properties file:
public class DisplayServiceTest {
private String value;
#Mock
private DisplayRepository displayReps;
#InjectMocks
private DisplayService displayService;
#Before
public void setUp() {
MockitoAnnotations.initMocks(this);
Properties prop = loadPropertiesFromFile("conn.properties");
this.value = prop.getProperty("id");
}
private Properties loadPropertiesFromFile(String fileName) {
Properties prop = new Properties();
try {
ClassLoader loader = Thread.currentThread().getContextClassLoader();
InputStream stream = loader.getResourceAsStream(fileName);
prop.load(stream);
stream.close();
} catch (Exception e) {
String msg = String.format("Failed to load file '%s' - %s - %s", fileName, e.getClass().getName(),
e.getMessage());
Assert.fail(msg);
}
return prop;
}
#Test
public void whenFindAll_thenReturnProductList() {
System.out.println("value: " + this.value);
Menu m = new Menu();
m.setId(this.value); // when I print value its showing 0
List<Display> expectedDisplay = Arrays.asList(m);
Mockito.doReturn(expectedDisplay).when(this.displayReps).findAll();
List<Display> actualDisplay = this.displayService.findAll();
Assert.assertEquals(expectedDisplay, actualDisplay);
}
}
Is there any way to mock objects which are initialized in the method itself. For example
void myMethod(){
SampleClass sample = new SampleClass();
int count = sample.getProductCount(5L);
}
I want to mock getProductCount method something like
when(sample.getProductCount(any(Long.class)).thenReturn(10)
But I don't find a way to do so. Any advice?
I'm using #Spy which lets you mock specific method,
A field annotated with #Spy can be initialized explicitly at declaration point.
In your case prepare the spy:
#Spy
private SampleClass sample = new SampleClass();
#BeforeMethod
public void initMocks() {
MockitoAnnotations.initMocks(this);
}
And in test:
doReturn(10).when(sample).getProductCount(any(Long.class));
I need help for below thing,
I have to write a Junit using PowerMock/Mockito for a method which makes a call to a static method of a final class present in an external jar.
The method for which i need to write the JUnit test is:
public class SomeClass {
private PrivateKey privateKeyFromPkcs8(String privateKeyPem) throws IOException {
Reader reader = new StringReader(privateKeyPem);
Section section = PemReader.readFirstSectionAndClose(reader, "PRIVATE KEY");
if (section == null) {
throw new IOException("Invalid PKCS8 data.");
}
byte[] bytes = section.getBase64DecodedBytes();
PKCS8EncodedKeySpec keySpec = new PKCS8EncodedKeySpec(bytes);
try {
KeyFactory keyFactory = SecurityUtils.getRsaKeyFactory();
PrivateKey privateKey = keyFactory.generatePrivate(keySpec);
return privateKey;
} catch (NoSuchAlgorithmException exception) {
} catch (InvalidKeySpecException exception) {
}
throw new IOException("Unexpected exception reading PKCS data");
}
}
In the above code PemReader is a final class and readFirstSectionAndClose(reader, "PRIVATE KEY") is a static method in PemReader.
I have tried writing the test shown below but Section object(section) is showing as null while debugging. Perhaps the actual code (PemReader.readFirstSectionAndClose(reader, "PRIVATE KEY")) is getting called instead of the mock.
#RunWith(PowerMockRunner.class)
#PrepareForTest({SomeClass.class,PemReader.class})
public class SomeClassTest {
#InjectMocks
SomeClass mockSomeClass;
#Mock
private Reader mockReader;
#Mock
private Section mockSection;
#Test
public void testPrivateKeyFromPkcs8() throws Exception {
PowerMockito.mockStatic(PemReader.class);
Mockito.when(PemReader.readFirstSectionAndClose(mockReader, "PRIVATE KEY")).thenReturn(mockSection);
assertNotNull(mockSomeClass.privateKeyFromPkcs8(dummyPrivateKey));
}
}
Please help me in writing a Junit using powermockito/mockito
You have to prepare the final, static class.
Here's an example using the PowerMock annotations for JUnit:
#RunWith(PowerMockRunner.class)
#PrepareForTest({PemReader.class})
public class PemReaderTest {
#Mock
private Reader mockReader;
#Mock
private Section mockSection;
#Test
public void testMockingStatic() {
PowerMockito.mockStatic(PemReader.class);
Mockito.when(PemReader.readFirstSectionAndClose(mockReader, "PRIVATE KEY")).thenReturn(mockSection);
Assert.assertEquals(mockSection, PemReader.readFirstSectionAndClose(mockReader, "PRIVATE KEY"));
}
}
For completeness, here's the definition of PemReader:
public final class PemReader {
public static Section readFirstSectionAndClose(Reader reader, String key) {
return null;
}
}
The above test passes with the following versions:
JUnit: 4.12
Mockito: 2.7.19
PowerMock: 1.7.0
Update 1: based on your updated question. Your test case will pass (or at least the invocation on PemReader.readFirstSectionAndClose will return something) if you just make this change:
Mockito.when(PemReader.readFirstSectionAndClose(
Mockito.any(Reader.class),
Mockito.eq("PRIVATE KEY"))
).thenReturn(mockSection);
The version of this instruction in your current test case relies on equality matching between the StringReader which your code passes into readFirstSectionAndClose and the mocked Reader which your test case supplies. These are not 'equal' hence the mocked invocation's expectations are not met and your mockSection is not returned.
A few, unrelated, notes:
There is no need to include SomeClass.class in #PrepareForTest, you only need to include the classes which you want to mock in that annotation, since SomeClass is the class you are trying to test there is no mocking required for that class.
Using #InjectMocks to instance SomeClass is a bit odd, since SomeClass has no (mockito provided) mocks to inject into it :) you can replace this declaration with SomeClass someClass = new SomeClass();
In the code you supplied SomeClass.privateKeyFromPkcs8 has private scope so it cannot be tested (or called in any way) from SomeClassTest.
The tested method has the following code:
SuppressWarnings suppressWarnings = method.getAnnotation(SuppressWarnings.class);
In my test method.I mocked java.lang.reflect.Method:
Method method= PowerMock.createMock(Method.class);
SuppressWarnings sw = EasyMock.createMock(SuppressWarnings.class);
EasyMock.expect(method.getAnnotation(SuppressWarnings.class)).andReturn(sw);
In the tested method,
method.getAnnotation(SuppressWarnings.class); always returns null.
I don't know why.Could anyone help me?
//code:
#Retention(RetentionPolicy.RUNTIME)
#Target(ElementType.METHOD)
public #interface Anonymous {
}
public class AnnotationClass {
public Anonymous fun(Method m){
Anonymous anonymous = m.getAnnotation(Anonymous.class);
return anonymous;
}
}
// test class:
#RunWith(PowerMockRunner.class)
#PrepareForTest(Method.class)
public class AnnotationClassTest {
#Test
public void test() throws NoSuchMethodException, SecurityException {
AnnotationClass testClass = new AnnotationClass();
final Method mockMethod = PowerMock.createMock(Method.class);
final Anonymous mockAnot = EasyMock.createMock(Anonymous.class);
EasyMock.expect(mockMethod.getAnnotation(Anonymous.class)).andReturn(mockAnot);
PowerMock.replay(mockMethod);
final Anonymous act = testClass.fun(mockMethod);
Assert.assertEquals(mockAnot, act);
PowerMock.verify(mockMethod);
}
}
error:
java.lang.AssertionError: expected:<EasyMock for interface
com.unittest.easymock.start.Anonymous> but was:<null>
SuppressWarnings has #Retention(value=SOURCE) which means that it is not available at runtime:
public static final RetentionPolicy SOURCE: Annotations are to be discarded by the compiler.
However, if you would try your code with a different annotation that is available at runtime, method.getAnnotation(MyAnnotation.class) would still return null. That is, because by default the mocked Method will return null for method calls.
I think your problem is in the configuration of the mock, when I run your code (using an annotation that is available at runtime) I get the following exception:
Exception in thread "main" java.lang.IllegalStateException: no last call on a mock available
at org.easymock.EasyMock.getControlForLastCall(EasyMock.java:466)
at org.easymock.EasyMock.expect(EasyMock.java:444)
at MockStuff.main(MockStuff.java:54)
This page has some explanations about how to mock a final class (such as Method).
Your code gives the exact same result for me. I was able to get it working using the following code:
#RunWith(PowerMockRunner.class)
#PrepareForTest(Method.class)
public class AnnotationClassTest {
#Test
public void test() throws NoSuchMethodException, SecurityException {
final Method mockMethod = PowerMock.createMock(Method.class);
final Anot mockAnot = EasyMock.createMock(Anot.class);
EasyMock.expect(mockMethod.getAnnotation(Anot.class)).andReturn(mockAnot);
PowerMock.replay(mockMethod);
final Anot methodReturn = mockMethod.getAnnotation(Anot.class);
Assert.assertEquals(mockAnot, methodReturn);
}
}
#Retention(RetentionPolicy.RUNTIME)
#interface Anot {}
Note that this code is self contained, I defined the Anot interface since you didn't give the definition of Anonymous.
I have a method as follows
private void validate(String schemaName){
....
SchemaFactory factory = SchemaFactory.newInstance(XMLConstants.W3C_XML_SCHEMA_NS_URI);**strong text**
Source schemaFile = new SteamSource(getClass().getClassLoader().getResourceAsStream(schemaName));
Schema schema = factory.newSchema(schemaFile);
....
}
This method get called from another method which I need to test(Using easymock and powermock). I'm struggling to mock following line
Source schemaFile = new SteamSource(getClass().getClassLoader().getResourceAsStream(schemaName));
Can someone give me a clue on this?
Current Status
Following is the mock statement
expectNew(StreamSource.class, anyObject(InputStream.class)).andReturn(mockedobject);
Powermock.replay(mockedobject, StreamSrouce.class);
This throws the following exception.
org.powermock.reflect.exceptions.TooManyConstructorsFoundException: Several matching constructors found, please specify the argument parameter types so that PowerMock can determine which method you're referring to.
Matching constructors in class javax.xml.transform.stream.StreamSource were:
I think you can do it using powermock in the following way (I'm just following the tutorial here):
Let's say you're class looks like this:
public class MyClass {
private void validate(String schemaName) {
....
SchemaFactory factory = SchemaFactory.newInstance(XMLConstants.W3C_XML_SCHEMA_NS_URI);**strong text**
Source schemaFile = new SteamSource(getClass().getClassLoader().getResourceAsStream(schemaName));
Schema schema = factory.newSchema(schemaFile);
....
}
}
You should create a test class like this:
#RunWith(PowerMockRunner.class)
#PrepareForTest(MyClass.class)
public class MyClassTest {
private MyClass testedClass = new MyClass();
private ClassLoader mockedClassLoader = createMock(ClassLoader.class);
private InputStream mockedInputStream = createMock(InputStream.class);
#Before
public void setUp() {
PowerMock.createPartialMock(MyClass.class, "getClass");
expect(testedClass.getClass()).andReturn(mockedClassLoader);
expected(mockedClassLoader.getResourceAsStream(***You string***)).andReturn(mockedInputStream);
replayAll(); // Not sure if that's the name of the method - you need to call replay on all mocks
}
#Test
public void testValidate() {
// Run your test logic here
}
}
Please excuse me if some of the easymock methods I used are named a bit differently. But this is the basic idea.
I think you need one or a combination of the following. Use Powermock constructor mocking for the new StreamSource as documented here: Powermock MockConstructor. You will probably also need to use a mock for SchemaFactory which mean you will need to mock the static factory method call via Powermock: MockStatic