44 lines
1.9 KiB
Markdown
44 lines
1.9 KiB
Markdown
### Running the tests
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#### Java versions
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Open Telemetry Auto Instrumentation's minimal supported version is java 8.
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All jar files that we produce, unless noted otherwise, have bytecode
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compatible with java 8 runtime. Our test suite is executed against
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java 8, all LTS versions and the latest non-LTS version.
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Some libraries that we auto-instrument may have higher minimal requirements.
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In this case we compile and test corresponding auto-instrumentation with
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higher java version as required by library. The resulting classes will have
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higher bytecode level, but as it matches library's java version, no runtime
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problem arise.
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#### Instrumentation tests
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Executing `./gradlew instrumentation:test` will run tests for all supported
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auto-instrumentations using that java version which runs the Gradle build
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itself. These tests usually use the minimal supported version of the
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instrumented library.
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#### Executing tests with specific java version
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In order to run tests on a specific java version, just execute `./gradlew
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testJava7` (or `testJava11` etc). Then Gradle task
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rule will kick in and do the following:
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- check, if Gradle already runs on a java with required version
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- if not, look for an environment variable named `JAVA_N_HOME`, where `N` is the requested java version
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- if Gradle could not found requested java version, then build will fail
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- Gradle will now find all corresponding test tasks and configure them to use java executable of the requested version.
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#### Executing tests against the latest versions of libraries under instrumentation
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This is done as part of the nightly build in order to catch when a new version of a library is
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released that breaks our instrumentation tests.
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To run these tests locally, add `-PtestLatestDeps=true` to your existing `gradlew` command line.
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#### Executing single test
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Executing `./gradlew :instrumentation:<INSTRUMENTATION_NAME>:test --tests <GROOVY TEST FILE NAME>` will run only the selected test.
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