disable flaky ExpressionTests.testSubTypeTiming() #894

[jukzi]

#894

[eclipse-platform-bot]

This pull request changes some projects for the first time in this development cycle.
Therefore the following files need a version increment:

runtime/tests/org.eclipse.core.expressions.tests/META-INF/MANIFEST.MF

An additional commit containing all the necessary changes was pushed to the top of this PR's branch. To obtain these changes (for example if you want to push more changes) either fetch from your fork or apply the git patch.

Git patch

From 912d4c2e7d44a9951842b8d917090c6be9565d8f Mon Sep 17 00:00:00 2001
From: Eclipse Platform Bot <[email protected]>
Date: Fri, 17 Jan 2025 09:30:22 +0000
Subject: [PATCH] Version bump(s) for 4.35 stream


diff --git a/runtime/tests/org.eclipse.core.expressions.tests/META-INF/MANIFEST.MF b/runtime/tests/org.eclipse.core.expressions.tests/META-INF/MANIFEST.MF
index d47738b787..69e2e7115c 100644
--- a/runtime/tests/org.eclipse.core.expressions.tests/META-INF/MANIFEST.MF
+++ b/runtime/tests/org.eclipse.core.expressions.tests/META-INF/MANIFEST.MF
@@ -2,7 +2,7 @@ Manifest-Version: 1.0
 Bundle-ManifestVersion: 2
 Bundle-Name: %pluginName
 Bundle-SymbolicName: org.eclipse.core.expressions.tests; singleton:=true
-Bundle-Version: 3.7.400.qualifier
+Bundle-Version: 3.7.500.qualifier
 Bundle-Vendor: %providerName
 Bundle-Localization: plugin
 Export-Package: 
-- 
2.47.1

Further information are available in Common Build Issues - Missing version increments.

[github-actions]

Test Results

 1 755 files  ±0   1 755 suites  ±0   1h 27m 35s ⏱️ - 7m 35s
 4 170 tests ±0   4 147 ✅  - 1   23 💤 +1  0 ❌ ±0 
13 107 runs  ±0  12 940 ✅  - 3  167 💤 +3  0 ❌ ±0 

Results for commit aa87847. ± Comparison against base commit 2f18de7.

This pull request skips 1 test.

AllExpressionTests ExpressionTests ‑ testSubTypeTiming

[akurtakov]

It doesn't look like there are any asserts that make sense for anything but the time measurement.
The test itself looks totally wrong as the "caching" version definitively can be slower on the first run as it populates the caches and even installs a BundleListener(!!!).
I would be in favor of totally removing the test after looking into it.

[jukzi]

Locally running it works and performs a performancetest, so it could be used as such

[akurtakov]

What I say is that even if fails locally that doesn't mean there is a problem. Please merge as is if you believe it's useful for smth.

[jukzi]

i used it to verify the current implementation is faster then using Class::isAssignableFrom :-)