Namespaced fixtures/models failing

gistfile1.txt

bin/rails g model admin/player first_name:string last_name:string position:string years_in_league:integer

bin/rake db:migrate

bin/rake test TEST=test/models/admin/player_test

Started with run options --seed 20010

Admin::Player
  test_0001_must be valid                                        ERROR (0.23s)
ActiveRecord::StatementInvalid:         ActiveRecord::StatementInvalid: Mysql2::Error: Table 'player_test.players' doesn't exist: SHOW FULL FIELDS FROM `players`


config/database.yml

# MySQL.  Versions 5.0+ are recommended.
#
# Install the MYSQL driver
#   gem install mysql2
#
# Ensure the MySQL gem is defined in your Gemfile
#   gem 'mysql2'
#
# And be sure to use new-style password hashing:
#   http://dev.mysql.com/doc/refman/5.0/en/old-client.html
#
default: &default
  adapter: mysql2
  encoding: utf8
  pool: 5
  username: <%= ENV['DEV_DATABASE_USER'] %>
  password: <%= ENV['DEV_DATABASE_PASSWORD'] %>
  host: localhost

development:
  <<: *default
  database: player_development

# 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:
  <<: *default
  database: player_test


app/models/admin.rb
module Admin
  def self.table_name_prefix
    'admin_'
  end
end
 

app/models/admin/player.rb

class Admin::Player < ActiveRecord::Base
end


test/fixtures/admin/players.yml

one:
  first_name: MyString
  last_name: MyString
  position: MyString
  years_in_league: 1

two:
  first_name: MyString
  last_name: MyString
  position: MyString
  years_in_league: 1


test/models/admin/player_test.rb

require "test_helper"

describe Admin::Player do
  let(:player) { Admin::Player.new }

  it "must be valid" do
    player.must_be :valid?
  end
end


test/test_helper.rb

ENV['RAILS_ENV'] = 'test'
require File.expand_path("../../config/environment", __FILE__)
require 'rails/test_help'
require 'minitest/rails'
require 'minitest/reporters'

reporter_options = { color: true }
Minitest::Reporters.use! [Minitest::Reporters::SpecReporter.new(reporter_options)]

class ActiveSupport::TestCase
    ActiveRecord::Migration.check_pending!

  # Setup all fixtures in test/fixtures/*.(yml|csv) for all tests in alphabetical order.
  #
  # Note: You'll currently still have to declare fixtures explicitly in integration tests
  # -- they do not yet inherit this setting
  fixtures :all

  # Add more helper methods to be used by all tests here...
  extend MiniTest::Spec::DSL

  register_spec_type self do |desc|
    desc < ActiveRecord::Base if desc.is_a? Class
  end
end