Stop using assertTrue(false)

[akurtakov]

This is plain wrong as it will always fail. Use fail directly or simplify tests where possible to remove the need for it. Other small improvements to tests done wherever seen while doing the main changes here.

[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:

tests/org.eclipse.text.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 45bfaf6f05aa66f2987b1f39e1f85ebd202e241a Mon Sep 17 00:00:00 2001
From: Eclipse Platform Bot <[email protected]>
Date: Wed, 30 Oct 2024 13:28:38 +0000
Subject: [PATCH] Version bump(s) for 4.34 stream


diff --git a/tests/org.eclipse.text.tests/META-INF/MANIFEST.MF b/tests/org.eclipse.text.tests/META-INF/MANIFEST.MF
index bfd99b7350..9ffe2164dd 100644
--- a/tests/org.eclipse.text.tests/META-INF/MANIFEST.MF
+++ b/tests/org.eclipse.text.tests/META-INF/MANIFEST.MF
@@ -2,7 +2,7 @@ Manifest-Version: 1.0
 Bundle-ManifestVersion: 2
 Bundle-Name: %Plugin.name
 Bundle-SymbolicName: org.eclipse.text.tests
-Bundle-Version: 3.14.600.qualifier
+Bundle-Version: 3.14.700.qualifier
 Bundle-Vendor: %Plugin.providerName
 Bundle-Localization: plugin
 Export-Package: 
-- 
2.47.0

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

[github-actions]

Test Results

 1 821 files  + 19   1 821 suites  +19   1h 54m 22s ⏱️ + 2m 51s
 7 724 tests ±  0   7 496 ✅ ±  0  228 💤 ±0  0 ❌ ±0 
24 333 runs  +359  23 586 ✅ +353  747 💤 +6  0 ❌ ±0 

Results for commit 2ceb19c. ± Comparison against base commit 392b477.