ddl: rewrites some DDL tests

[wjhuang2016]

What problem does this PR solve?

Issue Number: ref #33008

Problem Summary:

What is changed and how it works?

Rewrite some tests.

1. Move tests to ddl_test as possible.
2. Use failpoint to mock errors.

• column_test is totally rewritten and moved to ddl_test.
• Most of the tests in ddl_worker_test are rewritten and moved to ddl_test.
• Some tests are kept in ddl package, moved to cancel_ddl_test and other places.

Check List

Tests

• Unit test
• Integration test
• Manual test (add detailed scripts or steps below)
• No code

Side effects

• Performance regression: Consumes more CPU
• Performance regression: Consumes more Memory
• Breaking backward compatibility

Documentation

• Affects user behaviors
• Contains syntax changes
• Contains variable changes
• Contains experimental features
• Changes MySQL compatibility

Release note

None

[ti-chi-bot]

[REVIEW NOTIFICATION]

This pull request has been approved by:

• hawkingrei
• xiongjiwei

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[hawkingrei]

Can you rewrite this test case to remove the suite? suite in the testify doesn't work well #32747 and it will data race.

[hawkingrei]

Or wait for this pr merging.

[wjhuang2016]

I think it's ok since there is only one test.

[wjhuang2016]

/run-unit-test

[sre-bot]

Code Coverage Details: https://codecov.io/github/pingcap/tidb/commit/5dc12b1bd20462d212cd78c21da660b1721af4bc

[hawkingrei]

/run-unit-test

[xiongjiwei]

/merge

[ti-chi-bot]

This pull request has been accepted and is ready to merge.

Commit hash: 7a93637

[ti-chi-bot]

@wjhuang2016: Your PR was out of date, I have automatically updated it for you.

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