This folder contains all tests which relies on external processes such as TiDB.

Unit tests (the *_test.go files inside the source directory) should never rely on external programs.

Preparations

1. The following 7 executables must be copied or linked into these locations:

   • bin/tidb-server
   • bin/tikv-server
   • bin/pd-server
   • bin/pd-ctl
   • bin/go-ycsb
   • bin/minio
   • bin/tiflash

   The versions must be ≥2.1.0 as usual.

   What's more, there must be dynamic link library for TiFlash, see make target bin to learn more. You can install most of dependencies by running download_tools.sh.

2. The following programs must be installed:

   • mysql (the CLI client)
   • curl
   • s3cmd

3. The user executing the tests must have permission to create the folder /tmp/backup_restore_test. All test artifacts will be written into this folder.

Running

Make sure the path is br/

Run make integration_test to execute the integration tests. This command will

1. Build br
2. Check that all 7 required executables and br executable exist
3. Execute tests/run.sh

If the first two steps are done before, you could also run tests/run.sh directly. This script will

1. Start PD, TiKV and TiDB in background with local storage
2. Find out all tests/*/run.sh and run it

Writing new tests

New integration tests can be written as shell scripts in tests/TEST_NAME/run.sh. The script should exit with a nonzero error code on failure.

Several convenient commands are provided:

• run_sql <SQL> — Executes an SQL query on the TiDB database