# [misk] refactor: deprecate wisp ConcurrentMockTracer and migrate

shadow modules to misk version

## Summary
Deprecate wisp `ConcurrentMockTracer` and migrate shadow modules to use
misk version as part of misk-wisp deduplication effort. This change
follows the established pattern of consolidating functionality under
misk while maintaining backward compatibility during the transition
period.

## Changes Made

### Core Changes
- **Wisp ConcurrentMockTracer Deprecation**: Added `@Deprecated`
annotation to `wisp.tracing.testing.ConcurrentMockTracer` with proper
`ReplaceWith` guidance pointing to `misk.testing.ConcurrentMockTracer`
- **Shadow Module Migration**: Updated shadow modules to import and use
`misk.testing.ConcurrentMockTracer` instead of the wisp version

## Testing
- **Compilation Verified**: All affected modules compile successfully
without errors
- **Deprecation Warnings**: Wisp ConcurrentMockTracer now shows
appropriate deprecation warnings with migration guidance
- **Backward Compatibility**: Existing wisp tests continue to work while
showing deprecation guidance
- **Build Dependencies**: Verified that misk-testing dependencies are
properly configured

GitOrigin-RevId: a91ec605823cab94510003c955f61ecd5edfe8c7

Author: eugene-deng

misk-testing/api/misk-testing.api

@@ -157,8 +157,9 @@ public final class misk/services/FakeServiceModule : misk/inject/KAbstractModule
 	public fun <init> ()V
 }
 
-public final class misk/testing/ConcurrentMockTracer : io/opentracing/mock/MockTracer, misk/testing/TestFixture {
+public class misk/testing/ConcurrentMockTracer : io/opentracing/mock/MockTracer, misk/testing/TestFixture {
 	public fun <init> ()V
+	protected fun onSpanFinished (Lio/opentracing/mock/MockSpan;)V
 	public fun reset ()V
 	public final fun take ()Lio/opentracing/mock/MockSpan;
 	public final fun take (Ljava/lang/String;)Lio/opentracing/mock/MockSpan;

misk-testing/src/main/kotlin/misk/testing/ConcurrentMockTracer.kt

@@ -11,10 +11,8 @@ import jakarta.inject.Singleton
  * Extends [MockTracer] for use in concurrent environments, such as a web server and test client.
  * Prefer this wherever you'd otherwise use [MockTracer].
  */
-// TODO(keefer): Deprecate this (or forward the type via delegate) when wisp-tracing-test-fixtures
-//  publication is fixed. wisp-tracing provides a preferred copy of this class.
 @Singleton
-class ConcurrentMockTracer @Inject constructor() : TestFixture, MockTracer() {
+open class ConcurrentMockTracer @Inject constructor() : TestFixture, MockTracer() {
   private val queue = LinkedBlockingDeque<MockSpan>()
 
   override fun reset() {

wisp/wisp-tracing/src/testFixtures/kotlin/wisp/tracing/testing/ConcurrentMockTracer.kt

@@ -9,6 +9,13 @@ import java.util.concurrent.TimeUnit
  * Extends [MockTracer] for use in concurrent environments, such as a web server and test client.
  * Prefer this wherever you'd otherwise use [MockTracer].
  */
+@Deprecated(
+  message = "Duplicate implementations in Wisp are being migrated to the unified type in Misk.",
+  replaceWith = ReplaceWith(
+    expression = "ConcurrentMockTracer()",
+    imports = ["misk.testing.ConcurrentMockTracer"]
+  )
+)
 open class ConcurrentMockTracer : MockTracer() {
     private val queue = LinkedBlockingDeque<MockSpan>()