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Could not get test method warnings with munit #8441

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Description

@mwisnicki

Tracer Version(s)

1.46.1~8e0205904b

Java Version(s)

21.0.6

JVM Vendor

Eclipse Adoptium / Temurin

Bug Report

When running munit (scala) tests I'm getting a lot of warnings like these:

[dd.trace 2025-02-24 16:19:32:097 +0000] [io-compute-0] WARN datadog.trace.instrumentation.junit4.JUnit4Utils - Could not get test method
java.lang.NoSuchMethodException: com.example.Test.Name of test()
	at java.base/java.lang.Class.getMethod(Class.java:2395)
	at datadog.trace.instrumentation.junit4.JUnit4Utils.getTestMethod(JUnit4Utils.java:139)
	at datadog.trace.instrumentation.junit4.JUnit4Utils.toTestIdentifier(JUnit4Utils.java:297)
	at munit.MUnitRunner.runTest(MUnitRunner.scala:269)
	at munit.MUnitRunner.runTests$$anonfun$1(MUnitRunner.scala:135)
	at scala.collection.Iterator$$anon$9.next(Iterator.scala:584)
	at munit.MUnitRunner.loop$1(MUnitRunner.scala:150)
	at munit.MUnitRunner.sequenceFutures(MUnitRunner.scala:163)
	at munit.MUnitRunner.runTests(MUnitRunner.scala:135)
	at munit.MUnitRunner.runAll$$anonfun$1(MUnitRunner.scala:183)
	at scala.concurrent.impl.Promise$Transformation.run(Promise.scala:470)
	at cats.effect.unsafe.WorkerThread.run(WorkerThread.scala:743)

I guess because munit tests don't correspond to actual methods.
The test result seems visible in datadog.

Expected Behavior

No warnings.

Reproduction Code

package com.example

import munit.CatsEffectSuite

class Test extends CatsEffectSuite {
  test("Name of test") {}
}

Activity

  1. nikita-tkachenko-datadog commented on Feb 25, 2025

    @nikita-tkachenko-datadog
    Contributor

    Hi @mwisnicki, thank you for reporting this! The fix will be included in the upcoming DD Java tracer release scheduled for March, 3rd

  2. added this to the 1.47.0 milestone on Feb 25, 2025
  3. github-actions commented on Mar 5, 2025

    @github-actions
    Contributor

    🤖 This issue has been addressed in the latest release. Check full details in the Release Notes.

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