Snowflake integration tests

[tonykploomber]

Describe your changes

• Add Snowflake configuration & fixtures into integration testing
• Make test table name with random hash string during every testing session (Reason below)
• Modify all test cases in integration testing support dynamic table name

The reason we need the dynamic table name is now we use one single snowflake connection endpoint to perform the test.
To prevent the race condition or any data consistency issue during the testing, each test session should have standalone environment: that's why we logically add the hashing to each test table.

Example table name: taxi -> taxi-abc123 (6 chars uuid)
Example case: Two people may push the commit to github at same time, those intergration testing might conflict to each other, since they are sharing the same database, same table name on snowflake

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By the way, now the developer needs to add snowflake credential in the local environment variable:
(Please ask me $$$)

conda env config vars set SF_USERNAME=$$$
conda env config vars set SF_PASSWORD=$$$

Issue number

Closes #247

Checklist before requesting a review

• Performed a self-review of my code
• Formatted my code with pkgmt format
• Added tests (when necessary).
• Added documentation in the docstring and changelog (when needed)

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📚 Documentation preview 📚: https://jupysql--336.org.readthedocs.build/en/336/

[tonykploomber]

@edublancas Would you check again why docs/readthedocs.org:jupysql fail again?

[edublancas]

doc building has been fixed in master, please rebase

[idomic]

@tonykploomber Please don't add additional reviewers

[idomic]

Added some comments

[idomic]

I see the tests are failing.

[tonykploomber]

Yeah...I am fixing those

[tonykploomber]

@idomic Ready for review

[idomic]

looks good, my main concern is that the trial expires in 6 days and it'll fail the CI.
@edublancas

[yafimvo]

@tonykploomber
lgtm! tested on windows.

I saw it's already merged but we can patch a quick fix (added a comment)

[yafimvo]

We can remove this line

[edublancas]

I don't see any docs for this in the developer guide: https://jupysql.ploomber.io/en/latest/community/developer-guide.html

[idomic]

I assumed it's running as part of the integration tests: pytest src/tests/integration.
Do you suggest adding a specific entry for snowflake?

[edublancas]

what happens if I want to run them locally? Looks like I'd need to set some environment variables

[idomic]

Ok, I see your point.
@tonykploomber please submit a patch for these 2 comments.

[tonykploomber]

I don't see any docs for this in the developer guide: https://jupysql.ploomber.io/en/latest/community/developer-guide.html

Good point. We should mention how to test this, system environment variables has to be set up in order to perform snowflake testing on local