aboutsummaryrefslogtreecommitdiffstats
path: root/activerecord/test/inheritance_test.rb
blob: 7ab1d9106141e653003b83c92d8c60c9f991ee53 (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
require 'abstract_unit'
require 'fixtures/company'
require 'fixtures/project'
require 'fixtures/subscriber'

class InheritanceTest < Test::Unit::TestCase
  fixtures :companies, :projects, :subscribers, :accounts

  def test_company_descends_from_active_record
    assert_raise(NoMethodError) { ActiveRecord::Base.descends_from_active_record? }
    assert AbstractCompany.descends_from_active_record?, 'AbstractCompany should descend from ActiveRecord::Base'
    assert Company.descends_from_active_record?, 'Company should descend from ActiveRecord::Base'
    assert !Class.new(Company).descends_from_active_record?, 'Company subclass should not descend from ActiveRecord::Base'
  end

  def test_a_bad_type_column
    #SQLServer need to turn Identity Insert On before manually inserting into the Identity column
    if current_adapter?(:SQLServerAdapter, :SybaseAdapter)
      Company.connection.execute "SET IDENTITY_INSERT companies ON"
    end
    Company.connection.insert "INSERT INTO companies (id, #{QUOTED_TYPE}, name) VALUES(100, 'bad_class!', 'Not happening')"

    #We then need to turn it back Off before continuing.
    if current_adapter?(:SQLServerAdapter, :SybaseAdapter)
      Company.connection.execute "SET IDENTITY_INSERT companies OFF"
    end
    assert_raises(ActiveRecord::SubclassNotFound) { Company.find(100) }
  end

  def test_inheritance_find
    assert Company.find(1).kind_of?(Firm), "37signals should be a firm"
    assert Firm.find(1).kind_of?(Firm), "37signals should be a firm"
    assert Company.find(2).kind_of?(Client), "Summit should be a client"
    assert Client.find(2).kind_of?(Client), "Summit should be a client"
  end
  
  def test_alt_inheritance_find
    switch_to_alt_inheritance_column
    test_inheritance_find
    switch_to_default_inheritance_column
  end

  def test_inheritance_find_all
    companies = Company.find(:all, :order => 'id')
    assert companies[0].kind_of?(Firm), "37signals should be a firm"
    assert companies[1].kind_of?(Client), "Summit should be a client"
  end
  
  def test_alt_inheritance_find_all
    switch_to_alt_inheritance_column
    test_inheritance_find_all
    switch_to_default_inheritance_column
  end

  def test_inheritance_save
    firm = Firm.new
    firm.name = "Next Angle"
    firm.save
    
    next_angle = Company.find(firm.id)
    assert next_angle.kind_of?(Firm), "Next Angle should be a firm"
  end
  
  def test_alt_inheritance_save
    switch_to_alt_inheritance_column
    test_inheritance_save
    switch_to_default_inheritance_column
  end

  def test_inheritance_condition
    assert_equal 9, Company.count
    assert_equal 2, Firm.count
    assert_equal 3, Client.count
  end
  
  def test_alt_inheritance_condition
    switch_to_alt_inheritance_column
    test_inheritance_condition
    switch_to_default_inheritance_column
  end

  def test_finding_incorrect_type_data
    assert_raises(ActiveRecord::RecordNotFound) { Firm.find(2) }
    assert_nothing_raised   { Firm.find(1) }
  end
  
  def test_alt_finding_incorrect_type_data
    switch_to_alt_inheritance_column
    test_finding_incorrect_type_data
    switch_to_default_inheritance_column
  end

  def test_update_all_within_inheritance
    Client.update_all "name = 'I am a client'"
    assert_equal "I am a client", Client.find(:all).first.name
    assert_equal "37signals", Firm.find(:all).first.name
  end
  
  def test_alt_update_all_within_inheritance
    switch_to_alt_inheritance_column
    test_update_all_within_inheritance
    switch_to_default_inheritance_column
  end

  def test_destroy_all_within_inheritance
    Client.destroy_all
    assert_equal 0, Client.count
    assert_equal 2, Firm.count
  end
  
  def test_alt_destroy_all_within_inheritance
    switch_to_alt_inheritance_column
    test_destroy_all_within_inheritance
    switch_to_default_inheritance_column
  end

  def test_find_first_within_inheritance
    assert_kind_of Firm, Company.find(:first, :conditions => "name = '37signals'")
    assert_kind_of Firm, Firm.find(:first, :conditions => "name = '37signals'")
    assert_nil Client.find(:first, :conditions => "name = '37signals'")
  end
  
  def test_alt_find_first_within_inheritance
    switch_to_alt_inheritance_column
    test_find_first_within_inheritance
    switch_to_default_inheritance_column
  end

  def test_complex_inheritance
    very_special_client = VerySpecialClient.create("name" => "veryspecial")
    assert_equal very_special_client, VerySpecialClient.find(:first, :conditions => "name = 'veryspecial'")
    assert_equal very_special_client, SpecialClient.find(:first, :conditions => "name = 'veryspecial'")
    assert_equal very_special_client, Company.find(:first, :conditions => "name = 'veryspecial'")
    assert_equal very_special_client, Client.find(:first, :conditions => "name = 'veryspecial'")
    assert_equal 1, Client.find(:all, :conditions => "name = 'Summit'").size
    assert_equal very_special_client, Client.find(very_special_client.id)
  end

  def test_alt_complex_inheritance
    switch_to_alt_inheritance_column
    test_complex_inheritance
    switch_to_default_inheritance_column
  end
  
  def test_eager_load_belongs_to_something_inherited
    account = Account.find(1, :include => :firm)
    assert_not_nil account.instance_variable_get("@firm"), "nil proves eager load failed"
  end
  
  def test_alt_eager_loading
    switch_to_alt_inheritance_column
    test_eager_load_belongs_to_something_inherited
    switch_to_default_inheritance_column
    ActiveRecord::Base.logger.debug "cocksucker"
  end

  def test_inheritance_without_mapping
    assert_kind_of SpecialSubscriber, SpecialSubscriber.find("webster132")
    assert_nothing_raised { s = SpecialSubscriber.new("name" => "And breaaaaathe!"); s.id = 'roger'; s.save }
  end

  private
    def switch_to_alt_inheritance_column
      # we don't want misleading test results, so get rid of the values in the type column
      Company.find(:all, :order => 'id').each do |c|
        c['type'] = nil
        c.save
      end
      [ Company, Firm, Client].each { |klass| klass.reset_column_information }
      Company.set_inheritance_column('ruby_type')
    end
    def switch_to_default_inheritance_column
      [ Company, Firm, Client].each { |klass| klass.reset_column_information }
      Company.set_inheritance_column('type')
    end
end


class InheritanceComputeTypeTest < Test::Unit::TestCase
  fixtures :companies

  def setup
    Dependencies.log_activity = true
  end

  def teardown
    Dependencies.log_activity = false
    self.class.const_remove :FirmOnTheFly rescue nil
    Firm.const_remove :FirmOnTheFly rescue nil
  end

  def test_instantiation_doesnt_try_to_require_corresponding_file
    foo = Firm.find(:first).clone
    foo.ruby_type = foo.type = 'FirmOnTheFly'
    foo.save!

    # Should fail without FirmOnTheFly in the type condition.
    assert_raise(ActiveRecord::RecordNotFound) { Firm.find(foo.id) }

    # Nest FirmOnTheFly in the test case where Dependencies won't see it.
    self.class.const_set :FirmOnTheFly, Class.new(Firm)
    assert_raise(ActiveRecord::SubclassNotFound) { Firm.find(foo.id) }

    # Nest FirmOnTheFly in Firm where Dependencies will see it.
    # This is analogous to nesting models in a migration.
    Firm.const_set :FirmOnTheFly, Class.new(Firm)

    # And instantiate will find the existing constant rather than trying
    # to require firm_on_the_fly.
    assert_nothing_raised { assert_kind_of Firm::FirmOnTheFly, Firm.find(foo.id) }
  end
end