dumpling: add foreign key e2e test (#40133)

close #40227

dumpling/tests/e2e_foreign_key/conf/diff_config.toml

@@ -0,0 +1,29 @@
+# diff Configuration.
+
+check-thread-count = 4
+
+export-fix-sql = true
+
+check-struct-only = false
+
+[task]
+    output-dir = "./output"
+
+    source-instances = ["mysql1"]
+
+    target-instance = "tidb0"
+
+    target-check-tables = ["e2e_foreign_key.parent", "e2e_foreign_key.child"]
+
+[data-sources]
+[data-sources.mysql1]
+host = "127.0.0.1"
+port = 3306
+user = "root"
+password = ""
+
+[data-sources.tidb0]
+host = "127.0.0.1"
+port = 4000
+user = "root"
+password = ""

dumpling/tests/e2e_foreign_key/conf/lightning.toml

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+### tidb-lightning config
+
+[lightning]
+server-mode = false
+level = "error"
+check-requirements = false
+
+[tikv-importer]
+backend = "tidb"
+on-duplicate = "error"
+
+[mydumper]
+data-source-dir = "/tmp/dumpling_test_result/sql_res.e2e_foreign_key"
+
+[tidb]
+host = "127.0.0.1"
+port = 4000
+user = "root"
+password = ""
+status-port = 10080

dumpling/tests/e2e_foreign_key/data/e2e_foreign_key.sql

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+create database e2e_foreign_key DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_bin;
+use e2e_foreign_key;
+create table parent (id int key);
+create table child  (id int key, pid int, constraint fk_1 foreign key (pid) references parent(id));
+insert into parent values (1),(2),(3),(4),(5),(6),(7),(8),(9),(10);
+insert into child values (1,1),(2,2),(3,3),(4,4),(5,5),(6,6),(7,7),(8,8),(9,9),(10,10);
+set foreign_key_checks=0;
+insert into child values (100,100);

dumpling/tests/e2e_foreign_key/run.sh

@@ -0,0 +1,30 @@
+#!/bin/bash
+#
+# Copyright 2020 PingCAP, Inc. Licensed under Apache-2.0.
+
+set -eu
+cur=$(cd `dirname $0`; pwd)
+
+DB_NAME="e2e_foreign_key"
+
+# drop database on tidb
+export DUMPLING_TEST_PORT=4000
+run_sql "drop database if exists $DB_NAME;"
+
+# drop database on mysql
+export DUMPLING_TEST_PORT=3306
+run_sql "drop database if exists $DB_NAME;"
+
+# build data on mysql
+run_sql_file "$DUMPLING_BASE_NAME/data/e2e_foreign_key.sql"
+
+# dumping
+export DUMPLING_TEST_DATABASE=$DB_NAME
+run_dumpling
+
+cat "$cur/conf/lightning.toml"
+# use lightning import data to tidb
+run_lightning $cur/conf/lightning.toml
+
+# check mysql and tidb data
+check_sync_diff $cur/conf/diff_config.toml