When using Castle.Facilities.AutoTx facility with [Transaction(TransactionScopeOption.RequiresNew)] attribute, the expected new System.Transactions.CommittableTransaction is not created.
You can easily test it with the following unit test
using System.Transactions;
using Castle.Facilities.AutoTx.Testing;
using Castle.MicroKernel.Registration;
using Castle.Transactions;
using Castle.Windsor;
using NUnit.Framework;
namespace Castle.Facilities.AutoTx.Tests
{
public class TransService
{
private readonly NewTransService _s2;
public TransService(NewTransService s2)
{
_s2 = s2;
}
[Transaction]
public virtual string DoInTrans()
{
var currentTransaction = System.Transactions.Transaction.Current;
Assert.That(currentTransaction != null, "The current transaction mustn't be null.");
string transId = currentTransaction.TransactionInformation.LocalIdentifier;
_s2.DoInNewTrans(transId);
return transId;
}
}
public class NewTransService
{
[Transaction(TransactionScopeOption.RequiresNew)]
public virtual string DoInNewTrans(string parentTransId)
{
var currentTransaction = System.Transactions.Transaction.Current;
Assert.That(currentTransaction != null, "The current transaction mustn't be null.");
string transId = currentTransaction.TransactionInformation.LocalIdentifier;
Assert.AreNotEqual(parentTransId, transId, "Ambient transaction must differ from parent");
return transId;
}
}
public class SingleThread_NewAmbient
{
private WindsorContainer _Container;
[SetUp]
public void SetUp()
{
_Container = new WindsorContainer();
_Container.AddFacility<AutoTxFacility>();
_Container.Register(Component.For<TransService>());
_Container.Register(Component.For<NewTransService>());
}
[TearDown]
public void TearDown()
{
_Container.Dispose();
}
[Test]
public void Automatically_Starts_New_CommitableTransaction()
{
using (var scope = new ResolveScope<TransService>(_Container))
scope.Service.DoInTrans();
}
}
}
Am I misunderstanding the purpose of [Transaction(TransactionScopeOption.RequiresNew)] or is it a bug?
I have been digging into the Castle.Transactions source code and I was able to fix the behavior by changing following piece of code in Castle.Transactions.TransactionManager.ITransactionManager.CreateTransaction(ITransactionOptions transactionOptions):
if (activity.Count == 0)
tx = new Transaction(new CommittableTransaction(new TransactionOptions
...
to
if (activity.Count == 0 || transactionOptions.Mode == TransactionScopeOption.RequiresNew)
tx = new Transaction(new CommittableTransaction(new TransactionOptions
...
Can someone from Castle experts / owners check this?
Author here,
I think your code is great and would merge a PR with it if it doesn't break other tests. =)
The reason that RequiresNew isn't well supported is because it's in 99% of the cases an anti-pattern. You're after encapsulating your unit of work in a transaction; and your unit of work should correspond 1-1 with the business operation that should be consistent.
Now, if you have a transaction going on the current thread, like you'd have in your case if you need to use 'RequiresNew', then you're either after reading dirty data or spawning an unrelated transaction (from a business-operation perspective). Hence, you should be doing it in another thread.
Since transactions are 'ambient' and not explicit in the control flow in a programming language like C#, you're left with your 'call context slots' to save the transaction reference in; but from your code's point of view these don't exist; what you have are partial functions that only work in a transactional context. If you spawn a second transaction; how are you going to coordinate that with the current transaction? It's hard; and likely to lead to problems.
An aside
In other transactional systems, like geteventstore.com you get an explicit transaction identifier -- you have one in System.Transactions, too, but it's not explicit in the API/ABI/ADO.Net to the database, hence you can't use it the same way. With an explicit transaction identifier you can solve failures when it becomes 'in doubt', i.e. the 'generals problem'; you can't with System.Transactions. Instead you must mount the transaction MMC on the DTC in question and manually roll it back or forward.
Related
I would like to ask for a help and suggestions what is a correct approach in my case (probably its easy but I'm just starting with JUnit). Here is a part of my code
public boolean arrayListEmpty()
{
if(numericalSequence.isEmpty() == true)
return true;
else
return false;
}
This is a public method from model which I suppose i should test, it's just returning true if my numericalsequence is empty as you can see. I cant check it directly invoking numericalSequence.isEmpty (in controller where I need it) because it is private.
So obvious thing is to check
assertEquals(true, test.arrayListEmpty());
So my question is about suggestions what other asserts should I use/what cases should I predict which can come out. Should I in Test method fill numericalSequence with some values and assert it also? (for me its not necessary because any value inserted into sequence = not null but maybe it is not so easy)
First of all, welcome to Stack Overflow!
Looking at your question, it sounds like you're new to unit-testing (correct me if I'm wrong). So, I'll break my answers in to two sections; (1) answering your question, and (2) to give a general direction of how to write good tests and testable classes.
1. Answering your question
There are a couple more use cases you can think of here:
What happens if numericalSequence is null?
What if numericalSequence has 1 element?
What if numericalSequence has a null element?
Some of the cases above may not be possible depending on how your class is set up, but it's a test worth having so that any changes to the class that violates the "previously agreed behavior" of one of these test cases would fail.
2. Writing good tests
There are no strict guidelines on what to do in order to write good tests, however, if you structure your code to be testable, you'll find that writing good tests becomes easier, and would be less of chore. Allow me to explain.
NOTE: This is not a comprehensive guide, but is meant to start your journey in to the path of how to write better code, and better tests
So assume a class that needs to be tested is written like this:
class MyClass {
// NOTE: This is not `final`
private List<Integer> numericalSequence;
public MyClass() {
this.numericalSequence = new ArrayList<>();
}
public void doSomething(Integer x) {
if (x < 0) {
numericalSequence = new ArrayList<>();
} else {
numericalSequence.add(2 * x);
}
}
public boolean arrayListEmpty() {
// NOTE: Your sample code can be reduced to this one-liner
return numericalSequence.isEmpty();
}
}
Here are some of the flaws in the above code:
doSomething method allows nullable (boxed integer) values and so can cause NullPointerException in the first if statement.
The numericalSequence member is not final and hence the code that sets it to null is valid inside the doSomething method
The arrayListIsEmpty method does not check if numericalSequence is null
If I want to test how arrayListIsEmpty behaves when numericalSequence is null, or has null elements, it is hard to do so, unless you know how to get the class to that state.
If the class was re-written to the following:
class MyClass {
private final List<Integer> numericalSequence;
public MyClass() {
this(new ArrayList<>());
}
// Should be made public only if the classes that use this one needs to
// initialize this instance with the sequence. Make this package-private
// otherwise.
public MyClass(List<Integer> sequence) {
this.numericalSequence = sequence;
}
public void doSomething(int x) {
if (x < 0) {
// COMPILE ERROR: Cannot assign to a final member
// numericalSequence = new ArrayList<>();
numericalSequence.clear();
} else {
numericalSequence.add(2 * x);
}
}
public boolean arrayListEmpty() {
return numericalSequence == null || numericalSequence.isEmpty();
}
}
A few things to note about the above structure:
There are two constructors; the default invokes the one that takes a list of integers as the sequence, so that it reuses any logic that both would need to share. There are no logic in this example, but hopefully you'll come across one soon.
The doSomething() method doesn't accept Integer value, but int value that makes sure that x is never null (Java numerical primitive types cannot be null). This also means, numericalSequence cannot contain null values through doSomething().
Since numericalSequence can be initialized from outside of this class, the arrayListEmpty() method makes sure to check that numericalSequence is either null is truly empty.
Now you can write test cases like so:
#Test
public void arrayListEmpty_WhenListIsNull() {
MyClass test = MyClass(null);
assertTrue(test.arrayListEmpty());
}
#Test
public void arrayListEmpty_WhenListIsEmpty() {
MyClass test = MyClass();
assertTrue(test.arrayListEmpty());
}
#Test
public void arrayListEmpty_WhenListHasOnlyOneNonNullElement() {
List<Integer> sequence = new ArrayList<>();
sequence.add(0);
MyClass test = new MyClass(sequence);
assertFalse(test.arrayListEmpty());
}
#Test
public void arrayListEmpty_WhenListHasOnlyOneNullElement() {
List<Integer> sequence = new ArrayList<>();
sequence.add(null);
MyClass test = new MyClass(sequence);
assertFalse(test.arrayListEmpty());
}
Since doSomething() adds/clears the sequence, when writing tests for doSomething() make sure the call and verify the state of the class by checking the return value of arrayListEmpty().
For example:
#Test
public void doSomething_WhenInputLessThanZero() {
List<Integer> sequence = new ArrayList<>();
sequence.add(0);
MyClass test = new MyClass(sequence);
test.doSomething(-1);
assertTrue(test.arrayListEmpty());
}
My intention was to show a couple of things:
Structure your tests cases to be small and concise
Design your class to be easily testable
Hope this helps.
I'm using a Calendar object to determine whether or not to increase the workload of a system based on current day/hour values. Given that this object uses static methods, I'm using PowerMock to mock the static methods with the following annotations:
#RunWith(PowerMockRunner.class)
#PrepareForTest({ Calendar.class })
The code under test is pretty simple (though my logic needs work, I know):
public void determineDefaultMaximumScans() throws ParseException{
parseTime();
Calendar cal = Calendar.getInstance();
int dayOfWeek = cal.get(Calendar.DAY_OF_WEEK);
System.out.println(cal.get(Calendar.DAY_OF_WEEK));
if(dayOfWeek == (Calendar.SATURDAY) || dayOfWeek == (Calendar.SUNDAY)){
setDefaultMax(calculateNewDefaultMax(getDefaultMax()));
System.out.println("defaultMax increased by 20%");
} else {
if(currentTime.after(afterHoursBegin) && currentTime.before(afterHoursEnd)){
System.out.println("Not afterhours. Maintaining current maximum.");
setDefaultMax(defaultMax);
System.out.println("Current Maximum number of scans: " + getDefaultMax());
}
}
}
My test case reads as follows:
#SuppressWarnings("static-access")
#Test
public void testDetermineMaximumScans() throws ParseException{
PowerMock.mockStatic(Calendar.class);
String beginningTime = "18:00";
String endingTime = "05:00";
mockAfterHoursBegin = parser.parse(beginningTime);
mockAfterHoursEnd = parser.parse(endingTime);
mockCurrentTime = parser.parse(parser.format(new Date()));
EasyMock.expect(Calendar.getInstance()).andReturn(mockCalendar);
EasyMock.expect(mockCalendar.get(Calendar.DAY_OF_WEEK)).andReturn(6);
EasyMock.replay(mocks);
offHourMaximumCalculator.determineDefaultMaximumScans();
EasyMock.verify(mocks);
}
As of now, all of my attempts to return a specific value result in the following assertion error. Now I vaguely understand why it's returning the default but I do not see why I can't force the value or how to get around this expectation. Mocks in general are still a frustrating mystery to me. What am I missing?
java.lang.AssertionError:
Expectation failure on verify:
Calendar.get(7): expected: 1, actual: 0
Mocks are fairly simple. But wanting to mock static methods is a big running after complexity. I generally do not recommend to mock something like a Calendar. If you do weird and complex thing with it, just encapsulate in something you can test and mock easily.
And in fact, we pretty much never use Calendar.getInstance(). It returns something according to the locale. But it's rare that you don't want a specific calendar i.e. GregorianCalendar. So just do new GregorianCalendar.
But anyway, add a protected method doing
protected Calendar newCalendar() {
return Calendar.getInstance(); // or new GregorianCalendar()
}
will take 2 minutes and then a simple partial mock will do the trick.
Finally, I also don't recommend to use Calendar. You have a much nicer API in java.util.date in Java 8.
All this said, here is how you should do it. Calendar is a system class, so you need to follow a real specific path which is explained here.
#RunWith(PowerMockRunner.class)
#PrepareForTest(Calendar.class)
public class MyTest {
#Test
public void testDetermineMaximumScans() throws ParseException {
PowerMock.mockStatic(Calendar.class);
Calendar calendar = mock(Calendar.class);
EasyMock.expect(Calendar.getInstance()).andReturn(calendar);
EasyMock.expect(calendar.get(Calendar.DAY_OF_WEEK)).andReturn(6);
// really important to replayAll to replay the static expectation
PowerMock.replayAll(calendar);
assertThat(Calendar.getInstance().get(Calendar.DAY_OF_WEEK)).isEqualTo(6);
// and verifyAll is you want to verify that the static call actually happened
PowerMock.verifyAll();
}
}
When I execute the following test, the original object is being returned and not the mock, so the real method getLevelCriteriaForLevel(level) is being executed (I observed that with the debugger). Why is that so? I'm pretty sure that this already worked yesterday and I didn't change anything there.
I already tried
#PrepareForTest({LevelCriteria.class, LevelGenerator.class})
or used the MockitoJunitRunner as I did before, but this doesn't help either.
Here is the code (generateConcreteLevel is a private method. The expected exception is only thrown when I pass this data from the mock. Otherwise it's not thrown. The test fails because the exception is not thrown, because the test doesn't use the mock object but the real object):
public class LevelGenerator
{
public void createLevel(int level)
{
generateConcreteLevel(levelCriteria.getLevelCriteriaForLevel(level));
}
private void generateConcreteLevel(LevelCriterion levelCriterion)
{
int entryGroupCount = levelCriterion.getEntryGroupCount();
int exitGroupCount = levelCriterion.getExitGroupCount();
int exitsWhileEntries = levelCriterion.getExitsWhileEntries();
int maxGroupSize = levelCriterion.getMaxGroupSize();
List<Question> questions = levelCriterion.getQuestions();
int speed = levelCriterion.getSpeed();
Range blueItemsCount = levelCriterion.getBlueItemsCount();
Range brownItemsCount = levelCriterion.getBrownItemsCount();
Range greenItemsCount = levelCriterion.getGreenItemsCount();
Range redItemsCount = levelCriterion.getRedItemsCount();
Range whiteItemsCount = levelCriterion.getWhiteItemsCount();
Range timespanBetweenGroups = levelCriterion.getTimespanBetweenGroups();
float fractionOfCarAmountToLeave = levelCriterion.getFractionOfCarAmountToLeave();
float fractionOfMinimumItemsAmountInCarParkToStartExits = levelCriterion.getFractionOfMinimumItemsAmountInCarParkToStartExits();
checkItemsFitInEntryGroups(entryGroupCount, maxGroupSize, blueItemsCount, brownItemsCount, greenItemsCount, redItemsCount, whiteItemsCount);
}
private void checkItemsFitInEntryGroups(int entryGroupCount, int maxGroupSize, Range... ranges)
{
int totalRangeCount = 0;
for (Range range : ranges)
{
totalRangeCount += range.getMaximum();
}
if (totalRangeCount > entryGroupCount * maxGroupSize)
{
throw new UnsupportedOperationException("Error in level criterion: Not enough entry groups for Items.");
}
}
}
and the test...
#RunWith(PowerMockRunner.class)
public class LevelGeneratorTest
{
#Mock
private LevelCriteria levelCriteriaMock;
#InjectMocks
private LevelGenerator levelGenerator;
#Test(expected=UnsupportedOperationException.class)
public void tooLessPositionsInEntryGroups()
{
LevelCriterion levelCriterion = new LevelCriterion.LevelCriterionBuilder()
.withBlueItemsCount(new Range(10, 10))
.withEntryGroupCount(3)
.withExitGroupCount(3)
.withMaxGroupSize(3)
.build();
when(levelCriteriaMock.getLevelCriteriaForLevel(anyInt())).thenReturn(levelCriterion);
levelGenerator.createLevel(0);
}
}
By the way: It's not an Eclipse problem, since a Maven build produces the same error.
I know that I can execute the private method with PowerMockito's Whitebox directly what I will do after refactoring, but the question is, why when...then is not working here.
Assuming your question is:
Why is the real method getLevelCriteriaForLevel(level) executed when I expect to have the mocked implementation?
I will try to demonstrate that everything works as expected fine if you reproduce it is a simple example (switch from your current workspace if you need to).
I do not have you LevelCriterion.LevelCriterionBuilder() so I simplified your test by just instantiating a LevelCriterion (empty object). This is not relevant because in my implementation I will always return an UnsupportedOperationException.
Here is how my LevelGenerator looks like. The UnsupportedOperationException is as simple as possible LevelGenerator#generateConcreteLevel(LevelCriterion).
If implemented like this:
public class LevelGenerator
{
LevelCriteria levelCriteria;
public void createLevel(int level)
{
generateConcreteLevel(levelCriteria.getLevelCriteriaForLevel(level));
}
private void generateConcreteLevel(LevelCriterion levelCriteriaForLevel)
{
throw new UnsupportedOperationException("xxx");
}
}
The test is green, using a #RunWith(MockitoJUnitRunner.class) on top of LevelGeneratorTest.
I did not used #PrepareForTest or PowerMockRunner. I have Mockito version 1.9.5.
I am sure that I have not used the real getLevelCriteriaForLevel(level) implementation, because it looks like this:
public class LevelCriteria {
public LevelCriterion getLevelCriteriaForLevel(int level) {
throw new IllegalStateException("Unexpected call");
}
}
If the real getLevelCriteriaForLevel(int) is excuted the test is red (because an IllegalStateException is thrown).
And the test is still green...
This works with pure-Mockito (version 1.9.5) approach.
You should remove all other mocking library (PowerMock, EasyMock...)
Are you sure that your static call of when(..).thenReturn(..) is the Mockito one?
Have you tried: Mockito.when(..).thenReturn(..)
I hope it helps.
PS: I have seen that you updated the question. It is a little bit unfair for me, but I am not going to update my answer once again.
I do not need the implementation detail of generateConcreteLevel(..) to illustrate that the when(..) call is working. Read my answer again. Try it in a separate workspace and you will see by yourself.
PS-2: I am using Eclipse too... Why should it be a problem? Eclipse is a great IDE.
I figured out what's wrong. Unfortunately you don't see the real problem in this question since I simplified the classes:
My real implementation of LevelGenerator got a parameterized constructor today. That's the reason why it worked yesterday but not anymore. Obviously there are mock injection problems with Mockito when not using a standard constructor.
Result: The when...then works as excpected.
Hi i have method insertOrUpdateProductsToDB(Product product) is used to perform insert operation in database using catalogService of Broadleaf ,catalog Service is doing all saving operation in db . My method is expected restClient product as a parameter.After passing the restClient product we are converting this product into Broadleafproduct by using ProductConversion Class.In product conversion only setting is happening for converting rest Product into broadleafproduct. Now my requirement is to test this method using mockito but when i tried to do add these two line at the end of my test method
verify(mainProduct).getAdditionalSkus().add(sku);
verify(mainProduct).setProductOptions(productOptionList);
Its failing.
when i debug the code there is for loop inside for loop in the method insertOrUpdateProductsToDB(Product product) and i find productOption = catalogService.saveProductOption(productOption); here productOption is coming null so please tell how to test loop inside loop and same happening for
for (Sku skuWithProductOptions : productConversion.createSkuWithProductOptions(product, mainProduct,productOptionList)) {
catalogService.saveSku(skuWithProductOptions);
}
this line in the same method .kindly also check my test case whether i am doing right or not .
Class and insertOrUpdateProductsToDB(Product product) Method to be test
import com.admin.exception.AdminGenericException;
import com.admin.exception.AdminRestException;
import com.admin.util.helper.ProductConversion;
import com.admin.wrapper.getproducts.req.ObjectFactory;
import com.admin.wrapper.getproducts.resp.Product;
import com.admin.wrapper.getproducts.resp.Response;
import com.mycompany.rest.service.client.RestClientUtil;
import com.mycompany.util.constants.ApplicationConstants;
#Service
public class GetProductsServiceImpl {
private static final Logger logger = Logger.getLogger(GetProductsServiceImpl.class);
#Resource(name = "blCatalogService")
protected CatalogService catalogService;
public void setCatalogService(CatalogService catalogService) {
this.catalogService = catalogService;
}
protected RestClientUtil restClientUtil;
public void setRestClientUtil(RestClientUtil restClientUtil) {
this.restClientUtil = restClientUtil;
}
#Value("#{configProperties['salePriceRate']}")
private long salePriceRate;
public void setRetailPriceRate(long retailPriceRate) {
this.retailPriceRate = retailPriceRate;
}
#Value("#{configProperties['retailPriceRate']}")
private long retailPriceRate;
public void setSalePriceRate(long salePriceRate) {
this.salePriceRate = salePriceRate;
}
//Insertion/Update DB logic
public String insertOrUpdateProductsToDB(Product product) {
logger.debug("Start of : insertOrUpdateProductsToDB()");
try {
List<String> category = new ArrayList<String> (Arrays.asList(ApplicationConstants.CATEGORY));
ProductConversion productConversion = new ProductConversion();
List<ProductOption> productOptionList = new ArrayList<ProductOption>();
if (category.contains(product.getCategory().toUpperCase())) {
org.broadleafcommerce.core.catalog.domain.Product mainProduct=catalogService.createProduct(new ProductType("org.broadleafcommerce.core.catalog.domain.Product", "Normal Product"));
mainProduct = productConversion.createProduct(mainProduct,product);
Sku sku=catalogService.createSku();
mainProduct.setDefaultSku(sku);
mainProduct = productConversion.addSkuToProduct(mainProduct, product, salePriceRate,retailPriceRate);
for (ProductOption productOption : productConversion.createProductOptions(product, mainProduct)) {
productOption.setAllowedValues(productConversion.createProductOptionValues(product,productOption));
productOption = catalogService.saveProductOption(productOption);
productOptionList.add(productOption);
}
sku = catalogService.saveSku(mainProduct.getDefaultSku());
mainProduct.getAdditionalSkus().add(sku);
mainProduct.setProductOptions(productOptionList);
mainProduct = catalogService.saveProduct(mainProduct);
for (Sku skuWithProductOptions : productConversion.createSkuWithProductOptions(product, mainProduct,productOptionList)) {
catalogService.saveSku(skuWithProductOptions);
}
}
logger.debug("End of : insertOrUpdateProductsToDB()");
return "Product inserted into DB successfully";
}
catch (Exception e) {
logger.error("Error:", e);
return "Insertion of product into DB Failed ";
}
}
//Insertion service for DB
public String insertProductsIntoDB(){
logger.debug("Start of : insertProductsIntoDB()");
int insertionCount=0;
try{
com.admin.wrapper.getproducts.resp.Response resp = getAvailableProductsFromPBS();
for (Product product : resp.getProducts().getProduct()) {
if(catalogService.findProductById(Long.parseLong(product.getId()))==null){
String str=insertOrUpdateProductsToDB(product);
if(str.equalsIgnoreCase("Product inserted into DB successfully")){
insertionCount=insertionCount+1;
}
}
}
logger.debug(insertionCount+" Products inserted into DB successfully");
logger.debug("End of : insertProductsIntoDB()");
return insertionCount+" Products inserted into DB successfully";
}catch (AdminRestException e) {
logger.error("Error:", e);
return e.getMessage();
}
}
}
My test case class and method
public class GetProductsServiceImplTest {
private CatalogService catalogService;
private RestClientUtil restClientUtil;
private GetProductsServiceImpl getProductsServiceImpl;
private org.broadleafcommerce.core.catalog.domain.Product mainProduct;
private Sku sku;
private ProductOption productOption;
private List<ProductOption> productOptionList;
#Before
public void setUp() throws Exception {
catalogService = mock(CatalogService.class);
productOptionList=mock(List.class);
mainProduct = spy(new ProductImpl());
sku = new SkuImpl();
getProductsServiceImpl = new GetProductsServiceImpl();
getProductsServiceImpl.setCatalogService(catalogService);
productOption=mock(ProductOption.class);
restClientUtil = new RestClientUtil();
}
#Test
public void testInsertOrUpdateProductsToDB() {
restClientUtil.setSellerCode("1");
restClientUtil.setPbsUrl("http://10.52.165.239:8080/pbs");
getProductsServiceImpl.setRestClientUtil(restClientUtil);
Response pbsResponse = getProductsServiceImpl
.getAvailableProductsFromPBS();
for (Product pbsProduct : pbsResponse.getProducts().getProduct()) {
when(catalogService.createProduct(new ProductType("org.broadleafcommerce.core.catalog.domain.Product","Normal Product"))).thenReturn(mainProduct);
when(catalogService.createSku()).thenReturn(sku);
when(catalogService.saveProductOption(productOption)).thenReturn(productOption);
when(catalogService.saveSku(sku)).thenReturn(sku);
when(catalogService.saveProduct(mainProduct)).thenReturn(mainProduct);
when(catalogService.saveSku(sku)).thenReturn(sku);
getProductsServiceImpl.insertOrUpdateProductsToDB(pbsProduct);
verify(mainProduct,times(2)).setDefaultSku(sku);
verify(mainProduct).getAdditionalSkus().add(sku);
verify(mainProduct).setProductOptions(productOptionList);
break;
}
}
}
This is the error while testing
java.lang.NullPointerException
at com.admin.api.service.getproducts.test.GetProductsServiceImplTest.testInsertOrUpdateProductsToDB(GetProductsServiceImplTest.java:68)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:47)
I have a few remarks that probably won't answer your orignal question. But I hope they will guide you toward a better refactor of this code. Also the code sample you showed are not enough to point you at the exact issue ; it's an NPE in the test method so it should not be that difficult to track down.
That being said here's the point I'd like to raise
The test code is curiously crafted, and in my opinion this code are overusing Mockito. Overall this code looks way too complex to be correctly tested anyway. I don't think it was coded following TDD principle (TDD is really convenient when it comes to testing and designing the app)
You may want to follow the common guideline no more than 10 line of codes in a single method, this usually helps to separate concerns and identify simpler code / intents. These simpler code could be changed and tested more easily if designed correctly (without leaking concepts or variables). For example you may want to extract a method that saves a single Product and test only that one.
What's even more striking is that this code seems kinda procedural (even if inside objects). And doesn't really explain the intent in business words (ok it's about saving stuff in DB, but for which reason there's all this logic, this reason should appear in the method name).
The test and Mockito is weird, and the code should not iterate over the collection to stub then verify
for (Product pbsProduct : pbsResponse.getProducts().getProduct()) {
when(catalogService.createProduct(new ProductType("org.broadleafcommerce.core.catalog.domain.Product","Normal Product"))).thenReturn(mainProduct);
when(catalogService.createSku()).thenReturn(sku);
when(catalogService.saveProductOption(productOption)).thenReturn(productOption);
when(catalogService.saveSku(sku)).thenReturn(sku);
when(catalogService.saveProduct(mainProduct)).thenReturn(mainProduct);
when(catalogService.saveSku(sku)).thenReturn(sku);
getProductsServiceImpl.insertOrUpdateProductsToDB(pbsProduct);
verify(mainProduct,times(2)).setDefaultSku(sku);
verify(mainProduct).getAdditionalSkus().add(sku);
verify(mainProduct).setProductOptions(productOptionList);
break;
}
In pseudo code I would first try to extract the saving logic using the given/when/then BBDD keywords (they help to clarify what need to be tested in which scenario and context). Keep the fixture and assertions to a minimum, you would rather deal with multiple test method than multiple complex test methods.
#Test
public void ensure_product_is_saved_in_the_catalog() {
// given
Product a_simple_product = ProductBuilder.simpleProduct().build();
when(catalogService.doSomething(....))).thenReturn(mainProduct);
// when
productsService.saveProduct(product);
// then
verify(catalogService).doSomethingElseWith(mainProduct);
}
If assertion on product data is relevant in your test scenario, then write a test that actually test the data (using JUnit assertions, AssertJ, ...). Don't mock the Product !
And proceed gradually for each test, then refactor if need ed to keep the code manageable (extract a single method in another class if necessary, etc.)
You should definitely read the following books, they've helped a lot of programmers to get better code Clean Coder or Growing Object Oriented Software, Guided by Tests. This list is of course not exhaustive.
Hope that helps.
Castle Windsor passes the registered concrete type to Controller's constructors. A typical implementation (no pun intended) is:
private readonly IDepartmentRepository _deptsRepository;
public DepartmentsController(IDepartmentRepository deptsRepository)
{
if (deptsRepository == null)
{
throw new ArgumentNullException("deptsRepository");
}
_deptsRepository = deptsRepository;
}
I need to pass the ctor a second parameter, if possible, so that I can pass that val on to the Repository constructor (I know: tramp data alert, but I don't know if there's a straightforward way around it:
public DepartmentsController(IDepartmentRepository deptsRepository, int DBInstance)
{
if (deptsRepository == null)
{
throw new ArgumentNullException("deptsRepository");
}
_deptsRepository = deptsRepository(DBInstance);
}
REPOSITORY
public DepartmentRepository(int dbInst)
{
string connStr = string.Format("Phoo{0}Bar", dbInst);
using (var conn = new OleDbConnection(connStr))
{
using (var cmd = conn.CreateCommand())
{
. . .
Is it possible to tweak what Castle Windsor sends to the Controller constructor this way? If so, how?
AND/BUT: For this to be of any value (to me, anyway), I need to be able to get the int val (that will be passed to the Controller) from the URL the client sends. IOW, if the client asks the server for data via:
http://locohost:4242/Platypus/GetAll/1
I need to pass a "1" as the second argument to PlatypusController.
If the user asks the server for data via:
http://locohost:4242/Platypus/GetAll/42
I need to pass a "42" as the second argument to PlatypusController.
etc.
This is what I did to solve my Controller/Repository data context Dilemma:
0) Added a database context argument to the Controller's routing attribute. IOW, this:
[Route("api/HHSUsers/GetAll")]
...got changed to this:
[Route("api/HHSUsers/GetAll/{dbContext=03}")]
1) Passed that database context arg to the Repository. To wit, this:
return _hhsusersrepository.GetAll();
...got changed to this:
return _hhsusersrepository.GetAll(dbContext);
...so that the Controller method is now:
[Route("api/HHSUsers/GetAll/{dbContext=03}")]
public IEnumerable<HHSUsers> GetAllHHSUsersRecords(int dbContext)
{
return _hhsusersrepository.GetAll(dbContext);
}
2) Changed the corresponding method in the Repository interface from:
IEnumerable<HHSUsers> GetAll();
...to this:
IEnumerable<HHSUsers> GetAll(string dbContext);
3) Changed the Repository method from this:
public HHSUsersRepository()
{
// All the data is loaded here in the ctor
}
public IEnumerable<HHSUsers> GetAll()
{
return hhsusers;
}
....to this:
public IEnumerable<HHSUsers> GetAll(string dbContext)
{
LoadHHSUsers(dbContext);
return hhsusers;
}
private void LoadHHSUsers(int dbContext)
{
string connStr = string.Format("Foo{0}Bar", dbContext);
// The same as previously from this point on, except that this:
// using (var conn = new OleDbConnection(#"Foo Bar Phoo Bar etc"...
// becomes:
// using (var conn = new OleDbConnection(connStr))
4) Tack the dbcontext val to the end of the URL when calling the method, so that it is this:
http://localhost:28642/api/HHSUsers/GetAll/42
...instead of this:
http://localhost:28642/api/HHSUsers/GetAll
If the data context to use is "03" I can omit the dbcontext arg from the URL, as 03 is the default value I set when I appended "=03" to the Controller's "dbContext" routing attribute arg.
I know some fancy-pants propeller-heads will find fault with this for some reason (for one reason because of the tramp data going here and there and everywhere like a hobo on steroids), but my response is the same as that of an athlete who is getting trash-talked by an opposing player and yet whose team is winning: just point at the scoreboard. IOW, this works for me, so that's pretty much all I care about. Style points are for runway models and, again, fancy-pants propeller-heads (AKA Star-Bellied Sneeches (as opposed to us plain
cats with the unstarred bellies)); see "The perfect is the enemy of the good."
This simple way has that self-same benefit -- of being (relatively) simple to grok and, thus, modify/refactor as necessary. Inelegant? Sure, but so was Joe Kapp.