I am trying to mock static classes(org.apache.commons.beanutils.Beanutils) for Junit 5 test cases. I came across mockito-inline
dependency helps with mocking static classes. I tried to use the mockito-inline
in the project for some strange reason it give me compilation error in the absence of mockito-core
library.
With mockito-core
am getting below:
org.mockito.exceptions.base.MockitoException:
The used MockMaker PowerMockMaker does not support the creation of static mocks
Mockito's inline mock maker supports static mocks based on the Instrumentation API.
You can simply enable this mock mode, by placing the 'mockito-inline' artifact where you are currently using 'mockito-core'.
Note that Mockito's inline mock maker is not supported on Android.
at com.xx.xx.xx.AvroCopyPropertiesInvocationTargetExceptionScenario(CreditOfferServiceTest.java:1197)
at org.junit.platform.commons.util.ReflectionUtils.invokeMethod(ReflectionUtils.java:675)
at org.junit.jupiter.engine.execution.MethodInvocation.proceed(MethodInvocation.java:60)
at org.junit.jupiter.engine.execution.InvocationInterceptorChain$ValidatingInvocation.proceed(InvocationInterceptorChain.java:125)
at org.junit.jupiter.engine.extension.TimeoutExtension.intercept(TimeoutExtension.java:132)
at org.junit.jupiter.engine.extension.TimeoutExtension.interceptTestableMethod(TimeoutExtension.java:124)
at org.junit.jupiter.engine.extension.TimeoutExtension.interceptTestMethod(TimeoutExtension.java:74)
at org.junit.jupiter.engine.execution.ExecutableInvoker$ReflectiveInterceptorCall.lambda$ofVoidMethod$0(ExecutableInvoker.java:115)
at org.junit.jupiter.engine.execution.ExecutableInvoker.lambda$invoke$0(ExecutableInvoker.java:105)
at org.junit.jupiter.engine.execution.InvocationInterceptorChain$InterceptedInvocation.proceed(InvocationInterceptorChain.java:104)
at org.junit.jupiter.engine.execution.InvocationInterceptorChain.proceed(InvocationInterceptorChain.java:62)
at org.junit.jupiter.engine.execution.InvocationInterceptorChain.chainAndInvoke(InvocationInterceptorChain.java:43)
at org.junit.jupiter.engine.execution.InvocationInterceptorChain.invoke(InvocationInterceptorChain.java:35)
at org.junit.jupiter.engine.execution.ExecutableInvoker.invoke(ExecutableInvoker.java:104)
at org.junit.jupiter.engine.execution.ExecutableInvoker.invoke(ExecutableInvoker.java:98)
at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.lambda$invokeTestMethod$6(TestMethodTestDescriptor.java:202)
at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)
at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.invokeTestMethod(TestMethodTestDescriptor.java:198)
at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.execute(TestMethodTestDescriptor.java:135)
at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.execute(TestMethodTestDescriptor.java:69)
at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$5(NodeTestTask.java:135)
at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)
at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$7(NodeTestTask.java:125)
at org.junit.platform.engine.support.hierarchical.Node.around(Node.java:135)
at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$8(NodeTestTask.java:123)
at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)
at org.junit.platform.engine.support.hierarchical.NodeTestTask.executeRecursively(NodeTestTask.java:122)
at org.junit.platform.engine.support.hierarchical.NodeTestTask.execute(NodeTestTask.java:80)
at org.junit.platform.engine.support.hierarchical.SameThreadHierarchicalTestExecutorService.invokeAll(SameThreadHierarchicalTestExecutorService.java:38)
at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$5(NodeTestTask.java:139)
at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)
at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$7(NodeTestTask.java:125)
at org.junit.platform.engine.support.hierarchical.Node.around(Node.java:135)
at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$8(NodeTestTask.java:123)
at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)
at org.junit.platform.engine.support.hierarchical.NodeTestTask.executeRecursively(NodeTestTask.java:122)
at org.junit.platform.engine.support.hierarchical.NodeTestTask.execute(NodeTestTask.java:80)
at org.junit.platform.engine.support.hierarchical.SameThreadHierarchicalTestExecutorService.invokeAll(SameThreadHierarchicalTestExecutorService.java:38)
at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$5(NodeTestTask.java:139)
at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)
at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$7(NodeTestTask.java:125)
at org.junit.platform.engine.support.hierarchical.Node.around(Node.java:135)
at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$8(NodeTestTask.java:123)
at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)
at org.junit.platform.engine.support.hierarchical.NodeTestTask.executeRecursively(NodeTestTask.java:122)
at org.junit.platform.engine.support.hierarchical.NodeTestTask.execute(NodeTestTask.java:80)
at org.junit.platform.engine.support.hierarchical.SameThreadHierarchicalTestExecutorService.submit(SameThreadHierarchicalTestExecutorService.java:32)
at org.junit.platform.engine.support.hierarchical.HierarchicalTestExecutor.execute(HierarchicalTestExecutor.java:57)
at org.junit.platform.engine.support.hierarchical.HierarchicalTestEngine.execute(HierarchicalTestEngine.java:51)
at org.junit.platform.launcher.core.DefaultLauncher.execute(DefaultLauncher.java:229)
at org.junit.platform.launcher.core.DefaultLauncher.lambda$execute$6(DefaultLauncher.java:197)
at org.junit.platform.launcher.core.DefaultLauncher.withInterceptedStreams(DefaultLauncher.java:211)
at org.junit.platform.launcher.core.DefaultLauncher.execute(DefaultLauncher.java:191)
at org.junit.platform.launcher.core.DefaultLauncher.execute(DefaultLauncher.java:137)
at org.eclipse.jdt.internal.junit5.runner.JUnit5TestReference.run(JUnit5TestReference.java:98)
at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:41)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:542)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:770)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:464)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:210)
Without the core - compilation issue. Please find the test dependency breakdown without mockito-core
:
[INFO] +- org.powermock:powermock-api-mockito2:jar:2.0.9:test
[INFO] | \- org.powermock:powermock-api-support:jar:2.0.9:test
[INFO] | +- org.powermock:powermock-reflect:jar:2.0.9:test
[INFO] | \- org.powermock:powermock-core:jar:2.0.9:test
[INFO] +- org.mockito:mockito-inline:jar:3.6.28:test
[INFO] | \- org.mockito:mockito-core:jar:3.1.0:test
[INFO] | +- net.bytebuddy:byte-buddy:jar:1.10.10:test
[INFO] | +- net.bytebuddy:byte-buddy-agent:jar:1.10.10:test
[INFO] | \- org.objenesis:objenesis:jar:2.6:test
[INFO] +- org.mockito:mockito-junit-jupiter:jar:3.6.0:test
[INFO] | \- org.junit.jupiter:junit-jupiter-api:jar:5.5.2:test
[INFO] | +- org.opentest4j:opentest4j:jar:1.2.0:test
[INFO] | \- org.junit.platform:junit-platform-commons:jar:1.5.2
You need to use mockito-inline
version 3.4.0
or higher and remove mockito-core
from your dependencies ( mockito-inline
depends on mockito-core
so it will be retrieved automatically).
That way, you will be using mockito static mocking correctly, but it wouldn't solve the exception that you posted.
To fix it, you need to remove all dependencies of powermock
as it conflicts with mockito
and causes this error
The used MockMaker PowerMockMaker does not support the creation of static mocks
You have to add /mockito-extensions/org.mockito.plugins.MockMaker file to the class path containing the value mock-maker-inline . Easiest way to do that is put it in the src/test/resources directory.
For more details check the Mockito documentation.
https://javadoc.io/doc/org.mockito/mockito-core/latest/org/mockito/Mockito.html#Mocking_Final
In my case we were using spring boot and below dependency for spring-boot-starter-test and mockito-core was coming internally with spring-boot-starter-test
testImplementation 'org.springframework.boot:spring-boot-starter-test'
use gradle dependencies to find this
+--- org.springframework.boot:spring-boot-starter-test -> 2.6.6
| +--- org.springframework.boot:spring-boot-starter:2.6.6 (*)
| +--- org.springframework.boot:spring-boot-test:2.6.6
| | \--- org.springframework.boot:spring-boot:2.6.6 (*)
| +--- org.springframework.boot:spring-boot-test-autoconfigure:2.6.6
| | +--- org.springframework.boot:spring-boot:2.6.6 (*)
| | +--- org.springframework.boot:spring-boot-test:2.6.6 (*)
| | \--- org.springframework.boot:spring-boot-autoconfigure:2.6.6 (*)
| +--- com.jayway.jsonpath:json-path:2.6.0
| | +--- net.minidev:json-smart:2.4.7 -> 2.4.8
| | | \--- net.minidev:accessors-smart:2.4.8
| | | \--- org.ow2.asm:asm:9.1 -> 9.3
| | \--- org.slf4j:slf4j-api:1.7.30 -> 1.7.36
| +--- jakarta.xml.bind:jakarta.xml.bind-api:2.3.3
| | \--- jakarta.activation:jakarta.activation-api:1.2.2
| +--- org.assertj:assertj-core:3.21.0
| +--- org.hamcrest:hamcrest:2.2
| +--- org.junit.jupiter:junit-jupiter:5.8.2
| | +--- org.junit:junit-bom:5.8.2
| | | +--- org.junit.jupiter:junit-jupiter:5.8.2 (c)
| | | +--- org.junit.jupiter:junit-jupiter-api:5.8.2 (c)
| | | +--- org.junit.jupiter:junit-jupiter-params:5.8.2 (c)
| | | \--- org.junit.platform:junit-platform-commons:1.8.2 (c)
| | +--- org.junit.jupiter:junit-jupiter-api:5.8.2
| | | +--- org.junit:junit-bom:5.8.2 (*)
| | | +--- org.opentest4j:opentest4j:1.2.0
| | | +--- org.junit.platform:junit-platform-commons:1.8.2
| | | | +--- org.junit:junit-bom:5.8.2 (*)
| | | | \--- org.apiguardian:apiguardian-api:1.1.2
| | | \--- org.apiguardian:apiguardian-api:1.1.2
| | \--- org.junit.jupiter:junit-jupiter-params:5.8.2
| | +--- org.junit:junit-bom:5.8.2 (*)
| | +--- org.junit.jupiter:junit-jupiter-api:5.8.2 (*)
| | \--- org.apiguardian:apiguardian-api:1.1.2
| +--- org.mockito:mockito-core:4.0.0
| | +--- net.bytebuddy:byte-buddy:1.11.19 -> 1.11.22
| | \--- net.bytebuddy:byte-buddy-agent:1.11.19 -> 1.11.22
| +--- org.mockito:mockito-junit-jupiter:4.0.0
| | \--- org.mockito:mockito-core:4.0.0 (*)
So, 2 steps to solve this issue.
Exclude the mockito-core from spring-boot-starter-test
testImplementation ('org.springframework.boot:spring-boot-starter-test')
{
exclude group: 'org.mockito', module :'mockito-core'
}
And now include the mockito-inline
testImplementation 'org.mockito:mockito-inline:4.6.1'
This will solve the issue.
Add the following per https://www.baeldung.com/mockito-mock-static-methods :
<dependency>
<groupId>org.mockito</groupId>
<artifactId>mockito-inline</artifactId>
<version>3.8.0</version>
<scope>test</scope>
</dependency>
I have some resolutions steps for same.
Please replace you dependency with below.
<dependency> <groupId>org.mockito</groupId> <artifactId>mockito-inline</artifactId> <version>4.5.1</version> <scope>test</scope> </dependency>
if use 4.5.1 or latest your code will work
Also use your try with resource to mock static method
try (MockedStatic<WelcomeUtil> theMock = Mockito.mockStatic(WelcomeUtil.class)) {
theMock.when(() -> WelcomeUtil.generateWelcome("John"))
.thenReturn("Guten Tag John");
assertEquals("Guten Tag John", WelcomeUtil.generateWelcome("John"));
}
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