desruisseaux commented on PR #84:
URL:
https://github.com/apache/maven-plugin-testing/pull/84#issuecomment-2726458358
Note: with Maven 4.0.0-rc-3, the tests of the Maven compiler plugin fail
with the following stack trace:
```
java.lang.NullPointerException: Cannot invoke
"org.apache.maven.api.services.Lookup.lookupOptional(java.lang.Class)" because
the return value of "org.apache.maven.api.Session.getService(java.lang.Class)"
is null
at
org.apache.maven.impl.DefaultToolchainManager.retrieveContext(DefaultToolchainManager.java:120)
at
org.apache.maven.impl.DefaultToolchainManager.getToolchainFromBuildContext(DefaultToolchainManager.java:90)
at
org.apache.maven.plugin.compiler.AbstractCompilerMojo.getToolchain(AbstractCompilerMojo.java:1530)
at
org.apache.maven.plugin.compiler.AbstractCompilerMojo.compiler(AbstractCompilerMojo.java:1046)
at
org.apache.maven.plugin.compiler.AbstractCompilerMojo.execute(AbstractCompilerMojo.java:1000)
at
org.apache.maven.plugin.compiler.CompilerMojo.execute(CompilerMojo.java:157)
at
org.apache.maven.plugin.compiler.CompilerMojoTestCase.testCompileSkipTest(CompilerMojoTestCase.java:371)
```
I do not know how Mockito works (I do not use it myself), but I suspect that
the following method of `maven-plugin-testing-harness` needs modification:
```
org.apache.maven.api.plugin.testing.stubs.SessionMock.getMockSession(LocalRepository)
```
The current implementation seems to define the behaviour of
`getService(Class)` for various classes (`RepositoryFactory`, `VersionParser`,
`LocalRepositoryManager`, `ArtifactInstaller`, `ArtifactDeployer`,
`ArtifactManager`, `ProjectManager`, `ArtifactFactory`, `ProjectBuilder`,
`ModelXmlFactory`), but I see no setting for `Lookup`.
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