如何在Rails测试中使用现有数据库？

Question

I have a postgreSQL database with sample users, content and other data. How can I use it as my test database?

The tests will create new data in it, so I want to be able to easily reset it before each run of tests. Is there an easy way to convert a database into a format that can be used to easily re-create it?

Answer 1

This is the bad Idea to do but you can do this by changing config/database.yml as

development:
  adapter: postgresql
  encoding: unicode
  database: development_db 
  pool: 10
  username: username
  password: password
  host: localhost

test 
  adapter: postgresql
  encoding: unicode
  database: test_db #change this db name to your development_db or whatever you want to use is test environment 
  pool: 10
  username: username
  password: password
  host: localhost

Change Test environment database to which you want to use(database with sample users)

Note: If you want re-use original database again then I would suggest take backup of database with sample users then use this in test environment

Answer 2

If your data is not too complex, I would use fixtures for the job. The test database is rolled back after every test which can slow down your tests considerably when your test suite grows and your database must be prepopulated before every test.