如何对领域迁移进行单元测试? [英] How to unit test Realm migrations?

问题描述

我正在尝试在 Realm 上对迁移进行单元测试.我的主要问题是:如何维护 RealmObject 的不同模式版本，以便能够创建旧对象的实例，进行迁移，然后根据新模式版本检查它是否正确?

Im trying to unit test a migration on Realm. My main question is: how can I maintain different schema versions of a RealmObject so as to be able to create a an instance of the old object, do the migration and then check if it is correct according the new schema version?

我开始尝试保留不同的模式版本，但它不会编译，因为对象具有相同的名称，尽管位于不同的包中.

I started by trying to keep the different schema versions but it wont compile since the objects have the same name, despite being on different packages.

推荐答案

在 Realm，我们通过将旧的 Realm 文件存储为资产来测试迁移机制(请参阅 https://github.com/realm/realm-java/tree/master/realm/realm-library/src/androidTest/assets)，然后编写测试以在迁移测试后检查结果(请参阅 https://github.com/realm/realm-java/blob/master/realm/realm-library/src/androidTest/java/io/realm/RealmMigrationTests.java).

At Realm we test the migration mechanism by storing old Realm files as assets (see https://github.com/realm/realm-java/tree/master/realm/realm-library/src/androidTest/assets) and then write tests to check the result after a migration test (see https://github.com/realm/realm-java/blob/master/realm/realm-library/src/androidTest/java/io/realm/RealmMigrationTests.java).

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