我在这里遇到了一点困难，我已经创建了一个数据库，并且在使用depot_production数据库时没有遇到任何问题，但是，最近每当我运行rake测试时，我都会遇到一系列错误，例如

# Running tests:

EEEEEEEE

Finished tests in 0.031499s, 253.9763 tests/s, 0.0000 assertions/s.

1) Error:
test_should_create_product(ProductsControllerTest):
Mysql2::Error: Access denied for user 'test'@'localhost' to database 'depot_test'

奇怪的是，我认为我的database.yml文件是好的。每次我运行db：migrate时，我只得到一个空行返回给我。我还添加了一个用户测试，但我认为这只是添加到我的开发数据库。我有点认为我的测试和生产数据库不存在...

development:
adapter: mysql2
encoding: utf8
reconnect: false
database: depot_development
pool: 5
username: root
password: admin
socket: /tmp/mysql.sock

# Warning: The database defined as "test" will be erased and
# re-generated from your development database when you run "rake".
# Do not set this db to the same as development or production.
test:
adapter: mysql2
encoding: utf8
reconnect: false
database: depot_test
pool: 5
username: test
password: testy
socket: /tmp/mysql.sock

production:
adapter: mysql2
encoding: utf8
reconnect: false
database: depot_production
pool: 5
username: prod
password: mypassword
socket: /tmp/mysql.sock

任何建议都将不胜感激，谢谢。
谢谢你坚持和我在一起。我感觉我很接近了，但有些事情很奇怪。以下是我所做的。

mysql> use depot_test;
ERROR 1049 (42000): Unknown database 'depot_test'
mysql> show databases;
+--------------------+
| Database           |
+--------------------+
| information_schema |
| depot_development  |
| development        |
| mysql              |
| performance_schema |
| test               |
+--------------------+
6 rows in set (0.01 sec)

mysql> use depot_test
ERROR 1049 (42000): Unknown database 'depot_test'
mysql> use test
Database changed
mysql> GRANT SELECT, INSERT, DELETE ON `test` TO test@'localhost' IDENTIFIED BY 'testy';
ERROR 1146 (42S02): Table 'test.test' doesn't exist
mysql> GRANT SELECT, INSERT, DELETE ON `depot_test` TO test@'localhost' IDENTIFIED BY       'testy';
ERROR 1146 (42S02): Table 'test.depot_test' doesn't exist