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Spring boot test with multiple configuration

In my Spring boot 2.1 project I have different #Configurations for different test (ConfigurationA and ConfigurationB), that reside in different packages. Both configurations define the same set of beans but in a different manner (mocked vs. the real thing)
As I am aware of the Bean overriding mechanism introduced in Spring Boot 2.1, I have set the property: spring.main.allow-bean-definition-overriding=true.
However I do have a test with the following the setup of the following configuration and test class. First there is a #Configuration in the productive part (I'm using Maven):
package com.stackoverflow;
#Configuration
public class ProdConfiguration{
...
}
Then in the test branch there is a general Test #Configuration on the same package level:
package com.stackoverflow
#Configuration
public class TestConfiguration {
#Bean
public GameMap gameMap() {
return Mockito.mock(GameMap.class);
}
}
And in a subpackage I have another #Configuration:
package com.stackoverflow.impl;
#Configuration
public class RealMapTestConfiguration {
#Bean
public GameMap gameMap() {
return new GameMap("testMap.json");
}
}
And then of course there is the test that is troubling me:
package com.stackoverflow.impl;
#ExtendWith(SpringExtension.class)
#SpringBootTest
#ContextConfiguration(classes={RealMapTestConfiguration.class, ProdConfiguration.class})
#ActiveProfiles("bug") // spring.main.allow-bean-definition-overriding=true
public class MapImageServiceIT {
#Autowired
private GameMap map;
}
It turns out that the injected GameMap into my test is a mock instance from TestConfiguration instead of the real thing from RealMapTestConfiguration. Aparrently in my test I have the configuration from ProdConfiguration and TestConfiguration, when I wanted ProdConfiguration and RealMapTestConfiguration. As the beans defined in the ProdConfiguration and *TestConfiguration are different the combination works, but TestConfiguration and RealMapTestConfiguration define the same been. It seems like the TestConfiguration is picked up by component scanning as it is in the same package as ProdConfiguration.
I was under the impression that when overriding beans the bean definition that is closer to the test class would be preferred. However this seems not to be the case.
So here are my questions:
When overriding beans, what is the order? Which bean overrides which one?
How to go about to get the correct instance in my test (using a different bean name is not an option, as in reality the injected bean is not directly used in the test but in a service the test uses and there is no qualifier on it.)

I've not used the spring.main.allow-bean-definition-overriding=true property, but specifying specific config in a test class has worked fine for me as a way of switching between objects in different tests.
You say...
It turns out that the injected GameMap into my test is a mock instance from TestConfiguration instead of the real thing from RealMapTestConfiguration.
But RealMapTestConfiguration does return a mock
package com.stackoverflow.impl;
#Configuration
public class RealMapTestConfiguration {
#Bean
public GameMap gameMap() {
return Mockito.mock(GameMap.class);
}
}

I think the problem here is that including ContextConfiguration nullifies (part of) the effect of #SpringBootTest. #SpringBootTest has the effect of looking for #SpringBootConfiguration in your application (starting from the same package, I believe). However, if ContextConfiguration is applied, then configurations are loaded from there.
Another way of saying that: because you have ContextConfiguration in your test, scanning for #Configuration classes is disabled, and TestConfiguration is not loaded.
I don't think I have a full picture of your configuration setup so can't really recommend a best practice here, but a quick way to fix this is to add TestConfiguration to your ContextConfiguration in your test. Make sure you add it last, so that it overrides the bean definitions in the other two configurations.
The other thing that might work is removing #ContextConfiguration entirely and letting the SpringBootApplication scanning do its thing - that's where what you said about the bean definition that is closest may apply.

In that case just don't use #Configuration on configuration class and import it to the test manually using #Import, example:
#SpringBootTest
#Import(MyTest.MyTestConfig.class)
public class MyTest {
#Autowired
private String string;
#Test
public void myTest() {
System.out.println(string);
}
static class MyTestConfig {
#Bean
public String string() {
return "String";
}
}
}

How to load a properties file based on the server environment with spring so that the values can be injected?

To my surprise I have had a difficult time finding an answer to this question. I have Seen many examples where you can use #PropertySource to load a specific properties file for a class. I have also seen examples where you can easily add different property files in spring boot projects. But what I want to do is to do this for a spring project that is NOT spring boot and load a properties file so that the values of this file can be injected in classes annotated with #Component which is dependent on the server environment. So for example if I am on development server I want a particular properties file loaded and on production a different properties file. The reason that I am doing it like this is because my data and service layers are their own modules. These modules contain their own unit tests and can be imported as their own modules in other spring boot projects. I need properties files to be loaded to serve these modules which use spring but not spring boot. I have tried the following, but this does not work.
#Configuration
#Profile("test")
#EnableJpaRepositories("com.hi.repository")
#EnableTransactionManagement
#EnableScheduling
public class InfrastructureConfig {
...
#Bean
public static PropertySourcesPlaceholderConfigurer placeHolderConfigurer() {
PropertySourcesPlaceholderConfigurer configurer = new PropertySourcesPlaceholderConfigurer();
Map<String, String> env = System.getenv();
String propertiesFile=null;
String e = env.get("SERVER_ENV");
if (e.equals("dev")) {
propertiesFile = "environment/development.properties";
} else if (e.equals("prod")) {
propertiesFile = "environment/production.properties";
}
configurer.setLocation(new ClassPathResource(propertiesFile));
return configurer;
}
Then I have a test which looks like this
#RunWith(SpringJUnit4ClassRunner.class)
#ContextConfiguration(locations = {"classpath:/spring/DealServiceTest-context.xml"})
#ActiveProfiles("test")
public class LogTest {
private static final Logger log = LogManager.getLogger(LogTest.class);
#Autowired
PathsService pathsService;
#Autowired
Environment environment;
#Test
public void testBeans(){
System.out.println("********** WASSUP from LogTest");
System.out.println(environment.getProperty("imageBucket"));
}
Although the test prints out null which indicates to me the properties file has not been loaded and prepared for its values to be injected. How can I achieve this?

You don't really need to set properties yourself, but you can do this using spring configuration. Check the documentation: https://docs.spring.io/spring-boot/docs/current/reference/html/boot-features-external-config.html#boot-features-external-config-profile-specific-properties
If you're using spring boot - all you need to do is create multiple properties file for your environments. And only for properties you need to override.
So your main properties file would be at
src/main/resources/application.properties
Production
src/main/resources/application-prod.properties
Development
src/main/resources/application-dev.properties
Testing
src/main/resources/application-test.properties
And then just use the profile name as your environment variable
java -jar -Dspring.profiles.active=prod demo-0.0.1-SNAPSHOT.jar

Actually, you can just use a placeholder in #PropertySource annotation.
See documentation:
Any ${...} placeholders present in a #PropertySource resource location will be resolved against the set of property sources already registered against the environment.
Assuming that placeholder is present in one of the property sources already registered, e.g. system properties or environment variables, the placeholder will be resolved to the corresponding value.
I've made a simple example, it receives a 'property.environment' value to choose, which .properties file should be used as property source. I have two resource files in my classpath - application-test.properties and application-dev.properties, each one contains a 'test.property' value ('test-env' and 'dev-env' respectively).
Property configuration:
#Configuration
#PropertySource("classpath:/config/application-${property.environment}.properties")
public class PropertyConfig {
#Bean
public static PropertySourcesPlaceholderConfigurer propertySourcesPlaceholderConfigurer() {
PropertySourcesPlaceholderConfigurer propertySourcesPlaceholderConfigurer = new PropertySourcesPlaceholderConfigurer();
return propertySourcesPlaceholderConfigurer;
}
}
Component with #Value
#Component
public class TestService {
#Value("${test.property}")
String testProperty;
#PostConstruct
void init() {
System.out.println("---------------------------------------------------------");
System.out.println("Running in " + testProperty + " environment");
System.out.println("---------------------------------------------------------");
}
}
Build command line example (it runs tests with test environment properties)
mvn clean install -DargLine="-Dproperty.environment=test"
Output
---------------------------------------------------------
Running in test-env environment
---------------------------------------------------------
Run command line example
java -jar -Dproperty.environment=dev PATH_TO_YOUR_JAR.jar
Output
---------------------------------------------------------
Running in dev-env environment
---------------------------------------------------------

Don't hard code based on different environment, in spring boot you can able to maintain properties specific environment easily. Refer https://spapas.github.io/2016/03/31/spring-boot-settings/

I would try to take advantage of the profile mechanism already in place in Spring. You basically have done the job yourself already, the only thing you need to change is to have different configurations for "test" and "production" profiles. I prefer to keep everything related to test away from production code (allowing me to place the TestConfig class below in the test source path), so I would probably do something like this:
#Configuration
#Profile("!test")
#PropertySource(value = "classpath:/environment/production.properties")
#Import(AppConfig.class)
public class ProductionConfig
{
// Your production-specific config goes here
}
#Configuration
#Profile("test")
#PropertySource(value = "classpath:/environment/development.properties")
#Import(AppConfig.class)
public class TestConfig
{
// Your test-specific config goes here
}
#Configuration
public class AppConfig
{
// Needed for spring to handle ${property:default} syntax
#Bean
public static PropertySourcesPlaceholderConfigurer propertyConfigIn() {
return new PropertySourcesPlaceholderConfigurer();
}
}
If you prefer to have one config for both cases, you can let the AppConfig import the TestConfig and the ProductionConfig instead, but that will put test code in to production...
Good luck with your project!

Create Spring Boot test with separate application.properties

I am developing web app with Spring Boot, and now I am trying to create tests for DAO layer, and I'd like to use different configurations, which will read custom property file instead of standard one. But Iam having trouble with that, it always reads default application. and hibernate.properties.
The want to do it in order to have different hibernate.ddl-auto properties for test. But when I run the test, I see that Spring reads properties from the hibernate.properties which is in resource folder (I've purposely made a typo in that file in order to get exception if it was read by Spring). But why does it read that file even when I use #TestPropertySource? I see there's something that I don`t know about that, but what?
package src/test/java/com.guard/dao
#RunWith(SpringRunner.class)
#DataJpaTest
#Rollback
public class LifeguardDaoTest {
#Autowired
private LifeguardDao lgDao;
#Test
public void selectTest(){
for (Lifeguard lg :lgDao.getAll()) {
System.out.println(lg);
}
}
}`
Test configuration class is to setup context
package src/test/java/com.guard
#SpringBootApplication
#EntityScan(value = {"com.guard.dao","com.guard.model"})
#TestPropertySource(value = {"classpath:application-test.properties", "classpath:hibernate-test.properties"})
public class TestConfiguration {
public static void main(String[] args) {
ApplicationContext ctx = SpringApplication.run(TestConfiguration.class, args);
String[] beanNames = ctx.getBeanDefinitionNames();
Arrays.sort(beanNames);
System.out.println("Spring boot test generated " + beanNames.length + " beans");
}
}
Required application-test.properties and hibernate-test.properties are on src/test/java path
Here's project structure (don`t know how to design it here, sorry)
|src
|--main
|----java
|------com.guard
|----------configuration
|-------------GuardApplication.class (#SpringBootApplication,requires default props)
|--test
|----java
|------application-test.properties
|-------hibernate-test.properties
|-----com.guard
|-------TestConfiguration.class
|-------dao
|---------LifeguardDaoTest.class
My application-test.properties
`
spring.jpa.properties.hibernate.use_sql_comments=true
spring.jpa.hibernate.dialect=org.hibernate.dialect.HSQLDialect
spring.jpa.hibernate.show_sql=false
spring.jpa.hibernate.format_sql=true
spring.jpa.hibernate.hbm2ddl-auto=create
# even in case if it won`t use "spring.jpa" prefix
hibernate.dialect=org.hibernate.dialect.HSQLDialect
hibernate.show_sql=true
hibernate.format_sql=true
`

Create new resources directory inside test directory and put your test properties file there. Also rename your properties files to application.properties and hibernate.properties
Spring tests will take properties from test/resources/ directory. And in this approach, you do not need #TestPropertySource

Typically, #TestPropertySource is used in conjunction with #ContextConfiguration.
Try with this configuration class.
#Configuration
#ComponentScan
#Profile("test")
public class TestConfiguration {
}
And annotation:
#Retention(RetentionPolicy.RUNTIME)
#Target(ElementType.TYPE)
#ContextConfiguration(classes = TestConfiguration.class)
#ActiveProfiles("test")
#TestPropertySource(locations="classpath:application-test.properties")
public #interface IntegrationTest { }
Then you just write test like this:
#RunWith(SpringJUnit4ClassRunner.class)
#IntegrationTest
public class SomeDaoTest {
...
}

Spring Boot integration tests doesn't read properties files

I would like to create integration test in which Spring Boot will read a value from .properties file using #Value annotation.
But every time I'm running test my assertion fails because Spring is unable to read the value:
org.junit.ComparisonFailure:
Expected :works!
Actual :${test}
My test:
#RunWith(SpringJUnit4ClassRunner.class)
#ContextConfiguration(classes = {WebTests.ConfigurationClass.class, WebTests.ClassToTest.class})
public class WebTests {
#Configuration
#ActiveProfiles("test")
static class ConfigurationClass {}
#Component
static class ClassToTest{
#Value("${test}")
private String test;
}
#Autowired
private ClassToTest config;
#Test
public void testTransferService() {
Assert.assertEquals(config.test, "works!");
}
}
application-test.properties under src/main/resource package contains:
test=works!
What can be the reason of that behavior and how can I fix it?
Any help highly appreciated.

You should load the application-test.properties using #PropertySource or #TestPropertySource
#RunWith(SpringJUnit4ClassRunner.class)
#TestPropertySource(locations="classpath:application-test.properties")
#ContextConfiguration(classes = {WebTests.ConfigurationClass.class, WebTests.ClassToTest.class})
public class WebTests {
}
for more info: Look into this Override default Spring-Boot application.properties settings in Junit Test

Besides the above marked correct answer, there is another nature way to load application-test.properties: Set your test run "profile" to "test".
Mark your test cases with:
#ActiveProfiles("test")
#RunWith(SpringJUnit4ClassRunner.class)
application-xxxx.properties is a naming convention for properties of different "profile".
This file application-xxxx.properties should be placed in src/main/resources folder.
"Profile" is also useful in bean configuration.

How to set Spring Active Profiles Pragmatically from a configuration class?

On a project I'm working on we have some old dependencies that define their own spring beans but need to be initialized from the main application. These beans are all constructed using spring profiles, i.e. "default" for production code and "test" for test code. We want to move away from using spring profiles, instead simply using #import to explicitly wire up our context.
The idea is to encapsulate all these old dependencies so that no other components need to care about spring profiles. Thus, from a test`s point of view, the application context setup can be described as follows:
#ContextConfiguration(classes = {TestContext.class})
#RunWith(SpringJUnit4ClassRunner.class)
public class MyTest {
//tests
}
TestContext further directs to two classes, one of which encapsulates the old dependencies:
#Configuration
#Import(value = {OldComponents.class, NewComponents.class})
public class TestContext {
//common spring context
}
To encapsulate the old components` need for profiles, the OldComponents.class looks as follows:
#Configuration
#Import(value = {OldContext1.class, OldContext2.class})
public class OldComponents {
static {
System.setProperty("spring.profiles.active", "test");
}
}
The problem here is that the static block does not appear to be executed in time. When running mvn clean install, the test gets an IllegalStateException because the ApplicationContext could not be loaded. I have verified that the static block gets executed, but it would appear that OldContext1 and OldContext2 (which are profile dependent) are already loaded at this time, which means it is too late.
The frustrating thing is that IntelliJ runs the tests just fine this way. Maven, however, does not. Is there a way to force these profiles while keeping it encapsulated? I've tried creating an intermediary context class, but it didn't solve the problem.
If we use the annotation #ActiveProfiles on the test class, it runs just fine but this kind of defeats the purpose. Naturally, we want to achieve the same in production and this means that if we cannot encapsulate the need for profiles, it needs to be configured in the web.xml.

If your configuration classes inherits of AbstractApplicationContext you can call:
getEnvironment().setActiveProfiles("your_profile");
For example:
public class TestContext extends AnnotationConfigWebApplicationContext {
public TestContext () {
getEnvironment().setActiveProfiles("test");
refresh();
}
}
Hope it helps.

It definietly seems that OldContext1 and OldContext2 are being class-loaded and initialized before the static block in OldComponents is executed.
Whilst I can't explain why there is a difference between your IDE and Maven (to do so would require some in-depth knowledge of some, if not all all, of : spring 3.x context initialization, maven surefire plugin, SpringJunit4ClassRunner and the internal IntelliJ test runner), can I recommend to try this?
#Configuration
#Import(value = {UseTestProfile.class, OldContext1.class, OldContext2.class})
public class OldComponents {
// moved the System.setProperty call to UseTestProfile.class
}
and
#Configuration
public class UseTestProfile {
static {
System.setProperty("spring.profiles.active", "test");
}
}
If I am understanding your problem correctly, class UseTestProfile should be loaded first (you might want to investigate a way to guarantee this?) and the other two classes in the import list should have the system setting they need to initialize properly.
Hope this helps...

You need make sure, environment takes effect at first.This is how I do:
#Component
public class ScheduledIni {
#Autowired
private Environment env;
#PostConstruct
public void inilizetion() {
String mechineName = env.getProperty("MACHINE_NAME");
if ("test".equals(mechineName) || "production".equals(mechineName) {
System.setProperty("spring.profiles.default", "Scheduled");
System.setProperty("spring.profiles.active", "Scheduled");
}
}
}
In scheduler add annotation Prodile and DependsOn to make it work.
#DependsOn("scheduledIni")
#Profile(value = { "Scheduled" })
#Component

Use #profile annotation in the class to load the configuration like below
#Configuration
#Profile("test")
public class UseTestProfile {
}
and set the value for the property spring.profiles.active either in property file or as a runtime argument