test: add fuzz tests for column data type alteration

[realtaobo]

I hereby agree to the terms of the GreptimeDB CLA.

Refer to a related PR or issue link (optional)

#3973

What's changed and what's your intention?

Just add fuzz test for Alter Table <table_name> MODIFY COLUMN <column_name> <column_type>

Checklist

• I have written the necessary rustdoc comments.
• I have added the necessary unit tests and integration tests.
• This PR requires documentation updates.

[WenyXu]

Thanks! Would you like to add the target to CI cfg

greptimedb/.github/workflows/develop.yml

Line 144 in f024054

target: [ "fuzz_create_table", "fuzz_alter_table", "fuzz_create_database", "fuzz_create_logical_table", "fuzz_alter_logical_table", "fuzz_insert", "fuzz_insert_logical_table" ]

and

greptimedb/.github/workflows/develop.yml

Line 286 in f024054

target: [ "fuzz_create_table", "fuzz_alter_table", "fuzz_create_database", "fuzz_create_logical_table", "fuzz_alter_logical_table", "fuzz_insert", "fuzz_insert_logical_table" ]

[codecov]

Codecov Report

Attention: Patch coverage is 92.13483% with 7 lines in your changes missing coverage. Please review.

Project coverage is 85.17%. Comparing base (cd97a39) to head (c7bb216).

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #4076      +/-   ##
==========================================
- Coverage   85.47%   85.17%   -0.30%     
==========================================
  Files         991      991              
  Lines      173053   173141      +88     
==========================================
- Hits       147913   147470     -443     
- Misses      25140    25671     +531     

[WenyXu]

@WenyXu It seems unnecessary. I added it to fuzz_alter_table as a part of alter table. What do you think？

Cool, I got you

BTW, it seems not work to read env var GT_MYSQL_ADDR form .env config file.

Interesting, it works on my machine.

If I don't set Environment variables，I got "GT_MYSQL_ADDR is empty, ignores test", even though I have a .env file int the root. How should I solve this problem?

What does the directory structure and .env file look like? (Don't submit any secrets)

[realtaobo]

What does the directory structure and .env file look like? (Don't submit any secrets)

The content is the same as file .env.example, only GT_MYSQL_ADDR is changed to:

GT_MYSQL_ADDR=127.0.0.1:4002

[WenyXu]

The content is the same as file .env.example, only GT_MYSQL_ADDR is changed to:

I don't have any idea about this👀

[realtaobo]

I don't have any idea about this👀

Got it, a little problem, maybe I should restart my machine 🐶

[WenyXu]

We can't to close the #3973 now. We need to insert some values before the alteration and validate the inserted values after the alteration. However, it could be done in another PR.