node.js - 在 "ERROR: Validation error"脚本中执行两个 Sequelize 命令时出现 "pretest"消息

Question

我正在为我的项目编写测试。它使用 Sequelize，我考虑过以下操作:

"pretest": "NODE_ENV=testing yarn sequelize db:migrate && yarn sequelize db:seed:all",
"test": "mocha --require @babel/register 'src/tests/**/*.spec.js'",
"posttest": "NODE_ENV=testing yarn sequelize db:migrate:undo:all"

但以下显示:

❯ yarn test     
yarn run v1.19.2
$ NODE_ENV=testing yarn sequelize db:migrate && yarn sequelize db:seed:all
$ /home/gabriel/Workspace/graphql-apollo/node_modules/.bin/sequelize db:migrate

Sequelize CLI [Node: 12.13.1, CLI: 5.5.1, ORM: 5.21.2]

Loaded configuration file "src/config/database.js".
== 20191123132531-create-users: migrating =======
== 20191123132531-create-users: migrated (0.047s)

== 20191123132658-create-messages: migrating =======
== 20191123132658-create-messages: migrated (0.028s)

$ /home/gabriel/Workspace/graphql-apollo/node_modules/.bin/sequelize db:seed:all

Sequelize CLI [Node: 12.13.1, CLI: 5.5.1, ORM: 5.21.2]

Loaded configuration file "src/config/database.js".
== 20191123132945-users: migrating =======

ERROR: Validation error

error Command failed with exit code 1.

如果我分别执行迁移和播种命令，它工作正常。我也尝试使用 concurrently ，但也会发生同样的情况。

"pretest": "concurrently 'NODE_ENV=testing yarn sequelize db:migrate' 'yarn sequelize db:seed:all'",

Answer 1

@gamofe 添加 --debug标记命令以查看有关错误的更多信息。例如

    $ sequelize db:seed:all --debug

您很可能会收到此错误，因为您正在运行 sequelize db:seed:all无需撤消先前的种子。如果您的表已经包含您尝试播种的数据，其中一些数据具有唯一约束，您将遇到唯一约束错误。
要解决这个问题，您需要运行 sequelize db:seed:undo:all播种前。
您可以在这里找到更多信息 https://sequelize.org/master/manual/migrations.html