Ruby on rails Rails 5上的唯一约束失败错误，使用Minitest

我对单元测试和Rails基本上是新手。我有一个简单的Rails应用程序，并尝试使用默认的Minitest和Capybara进行单元测试。不幸的是，它给了我这个错误，不管我累了测试什么

E

Error:
StocksControllerTest#test_the_truth:
ActiveRecord::RecordNotUnique: SQLite3::ConstraintException: UNIQUE constraint failed: admins.email: INSERT INTO "admins" ("created_at", "updated_at", "id") VALUES ('2017-06-28 08:49:33.148641', '2017-06-28 08:49:33.148641', 298486374)

bin/rails test test/controllers/stocks_controller_test.rb:10

测试/控制器/库存控制器.rb models/stock.rb

class Stock

models/admin.rb

class Admin

---

请记住，应用程序似乎运行得很好。我确实试图删除重置我的测试数据库，但没有帮助。非常感谢您的帮助。

检查您的test/fixtures/admins.yml以获得重复的id字段。您知道吗？除了这个，我已经清理了所有的固定装置！非常感谢你！

require 'test_helper'

class StocksControllerTest < ActionDispatch::IntegrationTest

  def setup
    @base_title = "Stationery Management System"
  end


  test "the truth" do
    assert true
  end
end

ActiveRecord::Schema.define(version: 20170627120530) do

  create_table "admins", force: :cascade do |t|
    t.string "email", default: "", null: false
    t.string "encrypted_password", default: "", null: false
    t.string "reset_password_token"
    t.datetime "reset_password_sent_at"
    t.datetime "remember_created_at"
    t.integer "sign_in_count", default: 0, null: false
    t.datetime "current_sign_in_at"
    t.datetime "last_sign_in_at"
    t.string "current_sign_in_ip"
    t.string "last_sign_in_ip"
    t.datetime "created_at", null: false
    t.datetime "updated_at", null: false
    t.index ["email"], name: "index_admins_on_email", unique: true
    t.index ["reset_password_token"], name: "index_admins_on_reset_password_token", unique: true
  end

  create_table "stocks", force: :cascade do |t|
    t.string "name"
    t.text "description"
    t.datetime "created_at", null: false
    t.datetime "updated_at", null: false
    t.integer "admin_id"
    t.index ["admin_id"], name: "index_stocks_on_admin_id"
  end

end

class Stock < ApplicationRecord

  belongs_to :admin
end

class Admin < ApplicationRecord
  # Include default devise modules. Others available are:
  # :confirmable, :lockable, :timeoutable and :omniauthable
  devise :database_authenticatable, :registerable,
         :recoverable, :rememberable, :trackable, :validatable

  has_many :stocks, dependent: :destroy
end