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chapter06code.txt
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/
chapter06code.txt
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# artest.rb ActiveRecord example code to test against
class Artest
# set up our account class (ties to account table in DB)
class Account < ActiveRecord::Base
end
# make our connection to the MS SQL Server database
ActiveRecord::Base.establish_connection(:adapter => "sqlserver",
:host => "localhost", :database => "myapp", :username => "sa", :password => "", :port => "1433")
def appreciate(account_id)
# return a message of appreciation
return Account.find(account_id.to_i).account_name + " is great!"
rescue
return nil
end
def insult(account_id)
# return a mean message
return Account.find(account_id.to_i).account_name + " is lame!"
end
def earnedmoney(account_id)
# return the money this account has earned
return Account.find(account_id.to_i).account_earned.to_f
rescue
return nil
end
end
# test_artest.rb Unit Test example
require 'artest'
require 'test/unit'
class TestArtest < Test::Unit::TestCase
def test_simple
temp = Artest.new
assert_equal("Kevin Marshall is great!", temp.appreciate(1).to_s)
end
end
# test_artest.rb Unit Test example
require 'artest'
require 'test/unit'
class TestArtest < Test::Unit::TestCase
def test_simple
temp = Artest.new
assert ("Kevin Marshall is great!" == temp.appreciate(1).to_s)
end
end
# test_artest.rb Unit Test example
require 'artest'
require 'test/unit'
class TestArtest < Test::Unit::TestCase
def test_simple
temp = Artest.new
assert_nil(temp.appreciate(100).to_s)
end
end
# test_artest.rb Unit Test example
require 'artest'
require 'test/unit'
class TestArtest < Test::Unit::TestCase
def test_simple
temp = Artest.new
assert_not_nil(temp.appreciate(1) == nil)
end
end
# test_artest.rb Unit Test example
require 'artest'
require 'test/unit'
class TestArtest < Test::Unit::TestCase
def test_simple
temp = Artest.new
assert_equal(temp.appreciate(1).to_s, nil)
end
end
# test_artest.rb Unit Test example
require 'artest'
require 'test/unit'
class TestArtest < Test::Unit::TestCase
def test_simple
temp = Artest.new
assert_in_delta(6.50, temp.earnedmoney(1), 0.05)
end
end
# test_artest.rb Unit Test example
require 'artest'
require 'test/unit'
class TestArtest < Test::Unit::TestCase
def test_simple
temp = Artest.new
assert_raise ActiveRecord::RecordNotFound do
temp.insult(1000)
end
end
end
# test_artest.rb Unit Test example
require 'artest'
require 'test/unit'
class TestArtest < Test::Unit::TestCase
def test_simple
assert_nothing_raised do
t = 100.0
a = t * 50.0
temp = Artest.new
assert_in_delta(6.50, temp.earnedmoney(1000), 0.05)
end
end
end
# test_artest.rb Unit Test example
require 'artest'
require 'test/unit'
class TestArtest < Test::Unit::TestCase
def test_simple
temp = Artest.new
assert_instance_of String, temp.insult(1)
end
end
# test_artest.rb Unit Test example
require 'artest'
require 'test/unit'
class TestArtest < Test::Unit::TestCase
def test_simple
temp = Artest.new
assert_kind_of String, temp.insult(1)
end
end
# test_artest.rb Unit Test example
require 'artest'
require 'test/unit'
class TestArtest < Test::Unit::TestCase
def test_simple
temp = Artest.new
assert_respond_to temp, :appreciate
response = temp.appreciate(1)
assert_responds_to response, :upcase
end
end
# test_artest.rb Unit Test example
require 'artest'
require 'test/unit'
class TestArtest < Test::Unit::TestCase
def test_simple
temp = Artest.new
assert_match /Kevin/, temp.appreciate(1)
end
end
# test_artest.rb Unit Test example
require 'artest'
require 'test/unit'
class TestArtest < Test::Unit::TestCase
def test_simple
temp = Artest.new
assert_no_match /\d+/, temp.appreciate(1)
end
end
# test_artest.rb Unit Test example
require 'artest'
require 'test/unit'
class TestArtest < Test::Unit::TestCase
def test_simple
obj1 = Artest.new
obj2 = obj1
obj3 = Artest.new
assert_same obj1, obj2
assert_same obj1, obj3
end
end
# test_artest.rb Unit Test example
require 'artest'
require 'test/unit'
class TestArtest < Test::Unit::TestCase
def test_simple
obj1 = Artest.new
obj2 = obj1
obj3 = Artest.new
assert_same obj1, obj3
assert_same obj1, obj2
end
end
# test_artest.rb Unit Test example
require 'artest'
require 'test/unit'
class TestArtest < Test::Unit::TestCase
def test_simple
obj1 = Artest.new
obj3 = Artest.new
assert_operator obj1, :==, obj2
end
end
# test_artest.rb Unit Test example
require 'artest'
require 'test/unit'
class TestArtest < Test::Unit::TestCase
def test_simple
temp = Artest.new
assert_throws :awesome do
throw :awesome if temp.appreciate(1) == "Kevin is great!"
end
end
end
# test_artest.rb Unit Test example
require 'artest'
require 'test/unit'
class TestArtest < Test::Unit::TestCase
def test_simple
temp = Artest.new
assert_send [temp, :appreciate, 1]
end
end
# test_artest.rb Unit Test example
require 'artest'
require 'test/unit'
class TestArtest < Test::Unit::TestCase
def test_simple
temp = Artest.new
if temp.appreciate(1).include?("Kevin")
flunk "Kevin was found in our text!"
else
flunk "Kevin was not found in our text!"
end
end
end
# test_artest.rb Unit Test example
require 'artest'
require 'test/unit'
class TestArtest < Test::Unit::TestCase
def test_simple
temp = Artest.new
assert_equal("Kevin is great!", temp.appreciate(1))
end
end
# test_artest.rb Unit Test example
require 'artest'
require 'test/unit'
require 'active_record/fixtures'
Fixtures.create_fixtures("c:\\ruby\\", :accounts)
class TestArtest < Test::Unit::TestCase
def test_simple
temp = Artest.new
assert_equal("Kevin is great!", temp.appreciate(1))
end
end
# test_artest.rb Unit Test example
require 'artest'
require 'test/unit'
require 'active_record/fixtures'
Fixtures.create_fixtures("c:\\ruby\\", :accounts)
class TestArtest < Test::Unit::TestCase
use_transactional_fixtures = true
def test_simple
temp = Artest.new
assert_equal("Kevin is great!", temp.appreciate(1))
end
end
# Test data set in YAML format saved as account.yml
<% 1000.times do |i| %>Kevin<%= i %>:
id: <%= i %>
username: Kevin<%= i %>
<% end %>
# Test data set in YAML format saved as account.yml
Kevin:
id: 1
username: Kevin
Catherine:
id: 2
username: Catherine
# Test data set in CSV format saved as account.csv
id, username
1,Kevin
2,"Marshall, Catherine"
3,"Married ""with children"""
# Test data record in Single File format saved as kevin.txt
id => 1
username => Kevin
# Test data record in Single File format saved as catherine.txt
id => 2
username => Marshall, Catherine
# program that throws a general ActiveRecordError
require 'rubygems'
require_gem 'activerecord'
ActiveRecord::Base.establish_connection(:adapter => "sqlserver",
:host => "mydbhost.com", :database => "test", :username => "sa", :password => "")
class Account < ActiveRecord::Base
end
begin
raise ActiveRecord::ActiveRecordError if Account.find(1).username == "Kevin"
rescue ActiveRecordError => e
puts "ActiveRecordError thrown: #{e}"
end
# data stored in our database (represented here in CSV format to save space)
id,username,type
1,Kevin,Husband
2,Catherine,Wife
# program that throws SubclassNotFound
require 'rubygems'
require_gem 'activerecord'
ActiveRecord::Base.establish_connection(:adapter => "sqlserver",
:host => "mydbhost.com", :database => "test", :username => "sa", :password => "")
class Account < ActiveRecord::Base
end
class Husband < Account
end
begin
temp = Account.find(2)
puts temp.inspect
rescue ActiveRecord::SubclassNotFound => e
puts "SubclassNotFound: #{e}"
end
# program to raise an AssociationTypeMismatch error
require 'rubygems'
require 'activerecord'
ActiveRecord::Base.establish_connection(:adapter => "sqlserver",
:host => "mydbhost.com", :database => "test", :username => "sa", :password => "")
class Pet < ActiveRecord::Base
has_many :cats
end
class Cat < ActiveRecord::Base
belongs_to :pet
end
class Dog
attr_accessor :name
end
temp = Pet.find(1)
p1 = Dog.new
p1.name = "Abby"
temp << p1 # => raises the AssociationTypeMismatch error
# program that raises a SerializationTypeMismatch error
require 'rubygems'
reuiqre 'activerecord'
ActiveRecord::Base.establish_connection(:adapter => "sqlserver",
:host => "mydbhost.com", :database => "test", :username => "sa", :password => "")
class Account < ActiveRecord::Base
serialize :yamldata, Array
end
temp = Account.find(1)
temp.yamldata = {:problem => "expecting Array, not Hash"}
# program that raises a AdapterNotSpecified error
require 'rubygems'
reuiqre 'activerecord'
ActiveRecord::Base.establish_connection(:host => "mydbhost.com",
:database => "test", :username => "sa", :password => "")
# program that raises a AdapterNotFound error
require 'rubygems'
reuiqre 'activerecord'
ActiveRecord::Base.establish_connection(:adapter => "slqserver",
:host => "mydbhost.com", :database => "test", :username => "sa", :password => "")
# program that raises a ConnectionNotEstablished error
require 'rubygems'
reuiqre 'activerecord'
class Account < ActiveRecord::Base
end
temp = Account.find(1)
# program that raises a RecordNotFound error
require 'rubygems'
reuiqre 'activerecord'
ActiveRecord::Base.establish_connection(:adapter => "sqlserver",
:host => "mydbhost.com", :database => "test", :username => "sa", :password => "")
class Account < ActiveRecord::Base
end
temp = Account.find(1,0)
# program that raises a StatementInvalid error
require 'rubygems'
reuiqre 'activerecord'
ActiveRecord::Base.establish_connection(:adapter => "sqlserver", :host => "mydbhost.com", :database => "test", :username => "sa", :password => "")
class Account < ActiveRecord::Base
end
temp = Account.find_by_sql("select * from accounts where kevin = 'username'")
# program that raises a PreparedStatementInvalid error
require 'rubygems'
reuiqre 'activerecord'
ActiveRecord::Base.establish_connection(:adapter => "sqlserver",
:host => "mydbhost.com", :database => "test", :username => "sa", :password => "")
class Account < ActiveRecord::Base
end
temp = Account.find(:first,
:conditions => ["username = ? and password = ?", "kevin"])
# program that raises a StaleObjectError error
require 'rubygems'
reuiqre 'activerecord'
ActiveRecord::Base.establish_connection(:adapter => "sqlserver",
:host => "mydbhost.com", :database => "test", :username => "sa", :password => "")
class Account < ActiveRecord::Base
end
t1 = Account.find(1)
t2 = Account.find(1)
t1.username = 'Kevin Marshall'
t1.save
t2.username = 'Kevin Nelson Marshall'
t2.save
# program that raises a ConfigurationError error
require 'rubygems'
reuiqre 'activerecord'
ActiveRecord::Base.establish_connection(:adapter => "sqlserver",
:host => "mydbhost.com", :database => "test", :username => "sa", :password => "")
class Account < ActiveRecord::Base
end
temp = Account.find(1, :include => :friends)
mylog = Logger.new('mylog.txt')
ActiveRecord::Base.logger = mylog
# Program to show ActiveRecord Logging in Action. (artest.rb)
require 'rubygems'
require_gem 'activerecord'
class Account < ActiveRecord::Base
set_table_name "accounts"
has_many :comments
end
class Comment < ActiveRecord::Base
set_table_name "comments"
belongs_to :account
end
ActiveRecord::Base.establish_connection(:adapter => "sqlserver",
:host => "mydbhost.com", :database => "test", :username => "sa", :password => "")
mylog = Logger.new('mylog.txt')
ActiveRecord::Base.logger = mylog
temp = Account.find(1)
mylog.info("found a record with username: #{temp.username}")
mylog.info("About to show comments")
temp.comments.each do |rec|
puts "#{temp.username} said #{rec.subject}"
end
mylog.info("Done showing comments")
FaliconMobileMac:~ falicon$ ruby artest.rb
# test program to show benchmark in action
require 'rubygems'
require_gem 'activerecord'
class Account < ActiveRecord::Base
set_table_name "accounts"
has_many :comments
end
class Comment < ActiveRecord::Base
set_table_name "comments"
belongs_to :account
end
ActiveRecord::Base.establish_connection(:adapter => "sqlserver",
:host => "mydbhost.com", :database => "test", :username => "sa", :password => "")
mylog = Logger.new(STDOUT)
ActiveRecord::Base.logger = mylog
Account.benchmark("Testing benchmark") do
temp = Account.find(1)
temp.comments.each do |rec|
puts "#{temp.username} said #{rec.subject}"
end
end
FaliconMobileMac:~ falicon$ ruby artest.rb