aboutsummaryrefslogtreecommitdiffstats
path: root/activerecord/test/cases/defaults_test.rb
blob: e9bc583bf441d81f857a48cb939761d4ac9a8ad9 (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
require "cases/helper"
require 'models/default'
require 'models/entrant'

class DefaultTest < ActiveRecord::TestCase
  def test_nil_defaults_for_not_null_columns
    column_defaults =
      if current_adapter?(:MysqlAdapter) && (Mysql.client_version < 50051 || (50100..50122).include?(Mysql.client_version))
        { 'id' => nil, 'name' => '',  'course_id' => nil }
      else
        { 'id' => nil, 'name' => nil, 'course_id' => nil }
      end

    column_defaults.each do |name, default|
      column = Entrant.columns_hash[name]
      assert !column.null, "#{name} column should be NOT NULL"
      assert_equal default, column.default, "#{name} column should be DEFAULT #{default.inspect}"
    end
  end

  if current_adapter?(:PostgreSQLAdapter)
    def test_multiline_default_text
      record = Default.new
      # older postgres versions represent the default with escapes ("\\012" for a newline)
      assert("--- []\n\n" == record.multiline_default || "--- []\\012\\012" == record.multiline_default)
    end
  end
end

class DefaultNumbersTest < ActiveRecord::TestCase
  class DefaultNumber < ActiveRecord::Base; end

  setup do
    @connection = ActiveRecord::Base.connection
    @connection.create_table :default_numbers do |t|
      t.integer :positive_integer, default: 7
      t.integer :negative_integer, default: -5
      t.decimal :decimal_number, default: "2.78", precision: 5, scale: 2
    end
  end

  teardown do
    @connection.drop_table "default_numbers" if @connection.table_exists? 'default_numbers'
  end

  def test_default_positive_integer
    record = DefaultNumber.new
    assert_equal 7, record.positive_integer
    assert_equal "7", record.positive_integer_before_type_cast
  end

  def test_default_negative_integer
    record = DefaultNumber.new
    assert_equal (-5), record.negative_integer
    assert_equal "-5", record.negative_integer_before_type_cast
  end

  def test_default_decimal_number
    record = DefaultNumber.new
    assert_equal BigDecimal.new("2.78"), record.decimal_number
    assert_equal "2.78", record.decimal_number_before_type_cast
  end
end

class DefaultStringsTest < ActiveRecord::TestCase
  class DefaultString < ActiveRecord::Base; end

  setup do
    @connection = ActiveRecord::Base.connection
    @connection.create_table :default_strings do |t|
      t.string :string_col, default: "Smith"
      t.string :string_col_with_quotes, default: "O'Connor"
    end
    DefaultString.reset_column_information
  end

  def test_default_strings
    assert_equal "Smith", DefaultString.new.string_col
  end

  def test_default_strings_containing_single_quotes
    assert_equal "O'Connor", DefaultString.new.string_col_with_quotes
  end

  teardown do
    @connection.drop_table :default_strings
  end
end

if current_adapter?(:MysqlAdapter, :Mysql2Adapter)
  class DefaultsTestWithoutTransactionalFixtures < ActiveRecord::TestCase
    # ActiveRecord::Base#create! (and #save and other related methods) will
    # open a new transaction. When in transactional fixtures mode, this will
    # cause Active Record to create a new savepoint. However, since MySQL doesn't
    # support DDL transactions, creating a table will result in any created
    # savepoints to be automatically released. This in turn causes the savepoint
    # release code in AbstractAdapter#transaction to fail.
    #
    # We don't want that to happen, so we disable transactional fixtures here.
    self.use_transactional_fixtures = false

    def using_strict(strict)
      connection = ActiveRecord::Base.remove_connection
      ActiveRecord::Base.establish_connection connection.merge(strict: strict)
      yield
    ensure
      ActiveRecord::Base.remove_connection
      ActiveRecord::Base.establish_connection connection
    end

    # MySQL cannot have defaults on text/blob columns. It reports the
    # default value as null.
    #
    # Despite this, in non-strict mode, MySQL will use an empty string
    # as the default value of the field, if no other value is
    # specified.
    #
    # Therefore, in non-strict mode, we want column.default to report
    # an empty string as its default, to be consistent with that.
    #
    # In strict mode, column.default should be nil.
    def test_mysql_text_not_null_defaults_non_strict
      using_strict(false) do
        with_text_blob_not_null_table do |klass|
          record = klass.new
          assert_equal '', record.non_null_blob
          assert_equal '', record.non_null_text

          assert_nil record.null_blob
          assert_nil record.null_text

          record.save!
          record.reload

          assert_equal '', record.non_null_text
          assert_equal '', record.non_null_blob

          assert_nil record.null_text
          assert_nil record.null_blob
        end
      end
    end

    def test_mysql_text_not_null_defaults_strict
      using_strict(true) do
        with_text_blob_not_null_table do |klass|
          record = klass.new
          assert_nil record.non_null_blob
          assert_nil record.non_null_text
          assert_nil record.null_blob
          assert_nil record.null_text

          assert_raises(ActiveRecord::StatementInvalid) { klass.create }
        end
      end
    end

    def with_text_blob_not_null_table
      klass = Class.new(ActiveRecord::Base)
      klass.table_name = 'test_mysql_text_not_null_defaults'
      klass.connection.create_table klass.table_name do |t|
        t.column :non_null_text, :text, :null => false
        t.column :non_null_blob, :blob, :null => false
        t.column :null_text, :text, :null => true
        t.column :null_blob, :blob, :null => true
      end

      yield klass
    ensure
      klass.connection.drop_table(klass.table_name) rescue nil
    end

    # MySQL uses an implicit default 0 rather than NULL unless in strict mode.
    # We use an implicit NULL so schema.rb is compatible with other databases.
    def test_mysql_integer_not_null_defaults
      klass = Class.new(ActiveRecord::Base)
      klass.table_name = 'test_integer_not_null_default_zero'
      klass.connection.create_table klass.table_name do |t|
        t.column :zero, :integer, :null => false, :default => 0
        t.column :omit, :integer, :null => false
      end

      assert_equal '0', klass.columns_hash['zero'].default
      assert !klass.columns_hash['zero'].null
      # 0 in MySQL 4, nil in 5.
      assert [0, nil].include?(klass.columns_hash['omit'].default)
      assert !klass.columns_hash['omit'].null

      assert_raise(ActiveRecord::StatementInvalid) { klass.create! }

      assert_nothing_raised do
        instance = klass.create!(:omit => 1)
        assert_equal 0, instance.zero
        assert_equal 1, instance.omit
      end
    ensure
      klass.connection.drop_table(klass.table_name) rescue nil
    end
  end
end