[romtsn]

PR Stack (Robolectric CI)

• test(android): Speed up Robolectric tests in CI #6543
• test(android): Use fewer Robolectric SDK levels in core and replay #6544
• ci: [Robolectric CI 2] Cache Robolectric android-all jars in the build job #6545

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📜 Description

Collection branch for the Robolectric CI speed-up stack. The stack PRs are merge-committed into this branch, and this branch is squash-merged into main at the end.

💡 Motivation and Context

A follow-up to #6470. That PR split the Robolectric tests from the plain JVM tests, but the gain came mostly from maxParallelForks. The plain JVM tests take only ~6% of the sentry-android-core unit-test time.

Local measurements showed two real costs:

1. Each SDK level that a test JVM uses costs ~1.3s locally, the first time it is used in that fork. Core and replay used 11 levels.
2. Robolectric downloads the android-all-instrumented jars at test runtime into ~/.m2. setup-gradle does not cache that directory, so CI downloads 100-200 MB per SDK level on each run.

Custom @Config(shadows = ...) sets do not make a new sandbox in Robolectric 4.15. Shadows of android.* classes are removed from the instrumentation config, because those packages are already instrumented. Sharing the shadows gave no gain, so it is not part of this stack.

💚 How did you test it?

See #6544 and #6545.

📝 Checklist

• I added GH Issue ID & Linear ID
• I added tests to verify the changes.
• No new PII added or SDK only sends newly added PII if sendDefaultPII is enabled.
• I updated the docs if needed.
• I updated the wizard if needed.
• Review from the native team if needed.
• No breaking change or entry added to the changelog.
• No breaking change for hybrid SDKs or communicated to hybrid SDKs.
• Public API changes reviewed by another Mobile SDK team member or implemented according to the develop docs spec.

🔮 Next steps

Compare the CI test times of #6544 and #6545 with main.

🤖 Generated with Claude Code

#skip-changelog

[sentry]

📲 Install Builds

Android

🔗 App Name	App ID	Version	Configuration
SDK Size	io.sentry.tests.size	8.63.0 (1)	release

⚙️ sentry-android Build Distribution Settings

[romtsn]

Dropping the stack: #6545 is closed and #6544 now targets main directly.