8 files declare their use of MigrateUpgradeExecuteTestBase
- DoubleSlashTest.php in core/modules/ migrate_drupal_ui/ tests/ src/ Functional/ d7/ DoubleSlashTest.php 
- IdConflictTest.php in core/modules/ migrate_drupal_ui/ tests/ src/ Functional/ d6/ IdConflictTest.php 
- IdConflictTest.php in core/modules/ migrate_drupal_ui/ tests/ src/ Functional/ d7/ IdConflictTest.php 
- NodeClassicTest.php in core/modules/ migrate_drupal_ui/ tests/ src/ Functional/ d6/ NodeClassicTest.php 
- Upgrade6Test.php in core/modules/ migrate_drupal_ui/ tests/ src/ Functional/ d6/ Upgrade6Test.php 
- Upgrade7Test.php in core/modules/ migrate_drupal_ui/ tests/ src/ Functional/ d7/ Upgrade7Test.php 
- UpgradeTest.php in core/modules/ aggregator/ tests/ src/ Functional/ migrate_drupal_ui/ d6/ UpgradeTest.php 
- UpgradeTest.php in core/modules/ aggregator/ tests/ src/ Functional/ migrate_drupal_ui/ d7/ UpgradeTest.php 
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