JsonUnit 4.0.0: causes java.lang.ClassNotFoundException: org.springframework.beans.factory.BeanFactoryInitializer

[pstorch]

Describe the bug

1. Describe which variant of the API are you using (AssertJ, Hamcrest, ...)
   AssertJ, SpringMVC
2. Create a small reproducible example and paste it the bug report.
   tbd. (Need some time to create this)
3. Describe expected behavior

Until json-unit 3.5.0 all tests did run fine, since 4.0.0 I get the following Exception in my Spring Tests:

Caused by: java.lang.NoClassDefFoundError: org/springframework/beans/factory/BeanFactoryInitializer
	at java.base/java.lang.ClassLoader.defineClass1(Native Method)
	at java.base/java.lang.ClassLoader.defineClass(ClassLoader.java:1027)
	at java.base/java.security.SecureClassLoader.defineClass(SecureClassLoader.java:150)
	at java.base/jdk.internal.loader.BuiltinClassLoader.defineClass(BuiltinClassLoader.java:862)
	at java.base/jdk.internal.loader.BuiltinClassLoader.findClassOnClassPathOrNull(BuiltinClassLoader.java:760)
	at java.base/jdk.internal.loader.BuiltinClassLoader.loadClassOrNull(BuiltinClassLoader.java:681)
	at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:639)
	at java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(ClassLoaders.java:188)
	at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:526)
	at org.springframework.test.context.support.DynamicPropertiesContextCustomizer.customizeContext(DynamicPropertiesContextCustomizer.java:70)
	at org.springframework.boot.test.context.SpringBootContextLoader$ContextCustomizerAdapter.initialize(SpringBootContextLoader.java:443)
	at org.springframework.boot.SpringApplication.applyInitializers(SpringApplication.java:627)
	at org.springframework.boot.SpringApplication.prepareContext(SpringApplication.java:401)
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:334)
	... 28 more

Using Spring Boot 3.3.5.

[lukas-krecan]

JsonUnit is dependent on Spring 6.2 so maybe it's pulling a newer version of a Spring module. It should not happen if you are using Spring Boot BOM. Can you check the Spring versions resolved by your build tool?

[lukas-krecan]

Btw. JsonUnit should work with older version of Spring, so you can force older version

[lukas-krecan]

What's you spring-test version?

[pstorch]

This is when 3.4.1 is used:

And this is with 4.0.0:

[lukas-krecan]

Yes, JsonUnit pulled in a newer version of spring-test. In this case you have to explicitly set the same version as the rest of spring dependencies in your Maven or Gradle file (or use Spring Boot BOM that does it for you)

[pstorch]

@lukas-krecan thanks

I already use the spring Boot BOM:

dependencies {
    implementation(platform(SpringBootPlugin.BOM_COORDINATES))
...

But I had to explicitly exclude the spring-test dependency from json-unit:

    testImplementation(libs.json.unit.spring) {
        // https://github.com/lukas-krecan/JsonUnit/issues/855
        exclude(group = "org.springframework", module = "spring-test")
    }

This solved it for me.

[lukas-krecan]

@jpgoelz Hi, can you please share what exception are you seeing? Is it really the same as the one reported here?

[lukas-krecan]

You have to upgrade Jackson to at least 2.14

[pstorch]

We got the Spring Boot 3.4.0 update today. Now my fix from #855 (comment) is not needed anymore.

From my point of view this ticket can be closed.

[lukas-krecan]

Let's keep it open for a while, so others have an easier time finding it. Thanks