TD-793: Refactor cascade tests

[coveralls]

Pull Request Test Coverage Report for Build 6856643409

• 1 of 1 (100.0%) changed or added relevant line in 1 file are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage increased (+0.02%) to 89.938%

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Totals
Change from base Build 6650399304:	0.02%
Covered Lines:	4371
Relevant Lines:	4860

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💛 - Coveralls

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Comparison is base (30e14fe) 89.91% compared to head (f6e8857) 89.93%.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #103 +/- ## ========================================== + Coverage 89.91% 89.93% +0.02% ========================================== Files 54 54 Lines 4860 4860 ========================================== + Hits 4370 4371 +1 + Misses 490 489 -1 ```

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