RSpec：`initialize'：FATAL：用户密码验证失败

Question

我的 Rails 应用程序运行良好，但是当我尝试应用一些模型测试时，RSpec 会抛出错误：

/home/luka/.rvm/gems/ruby-2.2.1/gems/activerecord-4.2.4/lib/active_record/connection_adapters/postgresql_adapter.rb:655:in `initialize': FATAL:  password authentication failed for user "luka" (PG::ConnectionBad)
FATAL:  password authentication failed for user "luka"

这是我的 database.yml 文件：

    default: &default
    adapter: postgresql
    encoding: unicode
    host: localhost
    username: luka
    password: 4129235
    # For details on connection pooling, see rails configuration guide
    # http://guides.rubyonrails.org/configuring.html#database-pooling
    pool: 5

    test:
 <<: *default
 database: postdb_test

这是我运行的测试：

require 'spec_helper'
require 'rails_helper'

describe Student do 
    it "creates valid entry"
end

宝石文件：

# Bundle edge Rails instead: gem 'rails', github: 'rails/rails'
gem 'rails', '4.2.4'
# Use postgresql as the database for Active Record 
gem 'pg'
...
gem 'sdoc', '~> 0.4.0', group: :doc
gem 'devise'
gem 'rails_12factor', group: :production
gem 'cancancan'
gem 'rspec-rails'
# Use ActiveModel has_secure_password
# gem 'bcrypt', '~> 3.1.7'

# Use Unicorn as the app server
# gem 'unicorn'

# Use Capistrano for deployment
# gem 'capistrano-rails', group: :development

group :development, :test do
# Call 'byebug' anywhere in the code to stop execution and get a debugger console
  gem 'byebug'
   end

 group :development do
 # Access an IRB console on exception pages or by using <%= console %> in     views
  gem 'web-console', '~> 2.0'

  # Spring speeds up development by keeping your application running in the background. Read more: https://github.com/rails/spring
  gem 'spring'
   end

我安装了一个 pg，用正确的密码创建了用户，并用正确的所有者创建了“postdb”。我已经在配置中从对等更改为 md5。没啥事儿。

UPD：看起来问题出在“postgres”用户中。命令“createdb”和 CREATE DATABASE 什么也没做，CREATE USER 和 ALTER USER 也是如此

Answer 1

不知道是什么，但通过重新安装 postgre 解决了。