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README.md

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Preparations

  1. The following executables must be copied or generated or linked into these locations, sync_diff_inspector can be downloaded from tidb-community-toolkit, tidb-server related binaries can be downloaded from tidb-community-server:

    • bin/tidb-server # version >= 4.0.0-rc.1
    • bin/tikv-server # version >= 4.0.0-rc.1
    • bin/pd-server # version >= 4.0.0-rc.1
    • bin/pd-ctl # version >= 4.0.0-rc.1
    • bin/tiflash # needs tiflash binary and some necessary so files
    • bin/sync_diff_inspector
    • bin/go-ycsb
    • bin/etcdctl
    • bin/jq
    • bin/minio

    If you are running tests on MacOS, tidb related binaries can be downloaded from tiup mirrors, such as https://tiup-mirrors.pingcap.com/tidb-v4.0.2-darwin-amd64.tar.gz. And sync_diff_inspector can be compiled by yourself from source tidb-tools

    All Tiflash required files can be found in tidb-community-server packages. You should put flash_cluster_manager, libtiflash_proxy.so and tiflash into bin directory in TiCDC code base.

  2. The following programs must be installed:

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

Running

Unit Test

  1. Unit test does not need any dependencies, just running make unit_test in root dir of source code, or cd into directory of a test case and run single case via GO111MODULE=on go test -check.f TestXXX.

Integration Test

  1. Run make integration_test_build to generate TiCDC related binaries for integration test

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

    1. Check that all required executables exist.
    2. Execute tests/run.sh

    If want to run one integration test case only, just pass the CASE parameter, such as make integration_test CASE=simple.

    There exists some environment variables that you can set by yourself, variable details can be found in test_prepare.

    MySQL sink will be used by default, if you want to test Kafka sink, please run with make integration_test_kafka CASE=simple.

  3. After executing the tests, run make coverage to get a coverage report at /tmp/tidb_cdc_test/all_cov.html.

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.