Add augsynth tests

[codecov-commenter]

Codecov Report

Base: 87.37% // Head: 95.20% // Increases project coverage by +7.83% :tada:

Coverage data is based on head (aab7107) compared to base (c890d99). Patch coverage: 100.00% of modified lines in pull request are covered.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #10 +/- ## ========================================== + Coverage 87.37% 95.20% +7.83% ========================================== Files 12 13 +1 Lines 610 626 +16 ========================================== + Hits 533 596 +63 + Misses 77 30 -47 ``` | [Impacted Files](https://codecov.io/gh/sdfordham/pysyncon/pull/10?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Stiof%C3%A1in+Fordham) | Coverage Δ | | |---|---|---| | [pysyncon/augsynth.py](https://codecov.io/gh/sdfordham/pysyncon/pull/10?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Stiof%C3%A1in+Fordham#diff-cHlzeW5jb24vYXVnc3ludGgucHk=) | `98.41% <100.00%> (+74.60%)` | :arrow_up: | | [pysyncon/base.py](https://codecov.io/gh/sdfordham/pysyncon/pull/10?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Stiof%C3%A1in+Fordham#diff-cHlzeW5jb24vYmFzZS5weQ==) | `75.90% <100.00%> (+0.29%)` | :arrow_up: | | [tests/test\_augsynth\_basque.py](https://codecov.io/gh/sdfordham/pysyncon/pull/10?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Stiof%C3%A1in+Fordham#diff-dGVzdHMvdGVzdF9hdWdzeW50aF9iYXNxdWUucHk=) | `100.00% <100.00%> (ø)` | | | [tests/test\_synth\_basque.py](https://codecov.io/gh/sdfordham/pysyncon/pull/10?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Stiof%C3%A1in+Fordham#diff-dGVzdHMvdGVzdF9zeW50aF9iYXNxdWUucHk=) | `100.00% <100.00%> (ø)` | | | [tests/test\_synth\_germany.py](https://codecov.io/gh/sdfordham/pysyncon/pull/10?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Stiof%C3%A1in+Fordham#diff-dGVzdHMvdGVzdF9zeW50aF9nZXJtYW55LnB5) | `100.00% <100.00%> (ø)` | | | [tests/test\_synth\_texas.py](https://codecov.io/gh/sdfordham/pysyncon/pull/10?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Stiof%C3%A1in+Fordham#diff-dGVzdHMvdGVzdF9zeW50aF90ZXhhcy5weQ==) | `100.00% <100.00%> (ø)` | | Help us with your feedback. Take ten seconds to tell us [how you rate us](https://about.codecov.io/nps?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Stiof%C3%A1in+Fordham). Have a feature suggestion? [Share it here.](https://app.codecov.io/gh/feedback/?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Stiof%C3%A1in+Fordham)

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