Add tests and CI

[moomindani]

resolves #240

Description

Added CI

Checklist

• I have signed the CLA
• I have run this code in development and it appears to resolve the stated issue
• This PR includes tests, or tests are not required/relevant for this PR
• I have updated the CHANGELOG.md and added information about my change to the "dbt-glue next" section.

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[nicor88]

As a general note I recommend this approach to use in your CI:

• unit tests - where you mock as much as possible everything that you need, e.g. using moto. unit tests do not need a real account to run, and they can be run easily even locally.
• functional tests, they implement dbt-tests-adapter tests, so pretty much a real case scenario test with real models. Those tests at the contrary require a real AWS account with some infra to run on. In dbt-athena we run those conditionally in the CI (for cost reasons), but they should be separated from unit tests. I do not see any functional tests added here, and without those, you miss a big part of it.

[moomindani]

As a general note I recommend this approach to use in your CI:

* unit tests - where you mock as much as possible everything that you need, e.g. using moto. unit tests do not need a real account to run, and they can be run easily even locally.

* functional tests, they implement dbt-tests-adapter tests, so pretty much a real case scenario test with real models. Those tests at the contrary require a real AWS account with some infra to run on. In dbt-athena we run those conditionally in the CI (for cost reasons), but they should be separated from unit tests. I do not see any functional tests added here, and without those, you miss a big part of it.

Thanks for the feedback. It was planned but not added yet yesterday.
Today I have separated tests into unit test and functional test, and used AWS account only for the functional test.

[aajisaka]

Looks good to me. Thank you!