aboutsummaryrefslogtreecommitdiffstats
path: root/activerecord/test/cases/relation_test.rb
blob: 6efdeac3d9d78d475ed056773754b7353743d5b1 (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
require "cases/helper"
require 'models/post'
require 'models/comment'

module ActiveRecord
  class RelationTest < ActiveRecord::TestCase
    fixtures :posts, :comments

    class FakeKlass < Struct.new(:table_name)
    end

    def test_construction
      relation = nil
      assert_nothing_raised do
        relation = Relation.new :a, :b
      end
      assert_equal :a, relation.klass
      assert_equal :b, relation.table
      assert !relation.loaded, 'relation is not loaded'
    end

    def test_single_values
      assert_equal [:limit, :offset, :lock, :readonly, :from, :reordering, :reverse_order, :uniq].map(&:to_s).sort,
        Relation::SINGLE_VALUE_METHODS.map(&:to_s).sort
    end

    def test_initialize_single_values
      relation = Relation.new :a, :b
      Relation::SINGLE_VALUE_METHODS.each do |method|
        assert_nil relation.send("#{method}_value"), method.to_s
      end
    end

    def test_association_methods
      assert_equal [:includes, :eager_load, :preload].map(&:to_s).sort,
        Relation::ASSOCIATION_METHODS.map(&:to_s).sort
    end

    def test_initialize_association_methods
      relation = Relation.new :a, :b
      Relation::ASSOCIATION_METHODS.each do |method|
        assert_equal [], relation.send("#{method}_values"), method.to_s
      end
    end

    def test_multi_value_methods
      assert_equal [:select, :group, :order, :joins, :where, :having, :bind].map(&:to_s).sort,
        Relation::MULTI_VALUE_METHODS.map(&:to_s).sort
    end

    def test_multi_value_initialize
      relation = Relation.new :a, :b
      Relation::MULTI_VALUE_METHODS.each do |method|
        assert_equal [], relation.send("#{method}_values"), method.to_s
      end
    end

    def test_extensions
      relation = Relation.new :a, :b
      assert_equal [], relation.extensions
    end

    def test_empty_where_values_hash
      relation = Relation.new :a, :b
      assert_equal({}, relation.where_values_hash)

      relation.where_values << :hello
      assert_equal({}, relation.where_values_hash)
    end

    def test_has_values
      relation = Relation.new Post, Post.arel_table
      relation.where_values << relation.table[:id].eq(10)
      assert_equal({'id' => 10}, relation.where_values_hash)
    end

    def test_values_wrong_table
      relation = Relation.new Post, Post.arel_table
      relation.where_values << Comment.arel_table[:id].eq(10)
      assert_equal({}, relation.where_values_hash)
    end

    def test_tree_is_not_traversed
      relation = Relation.new Post, Post.arel_table
      left     = relation.table[:id].eq(10)
      right    = relation.table[:id].eq(10)
      combine  = left.and right
      relation.where_values << combine
      assert_equal({}, relation.where_values_hash)
    end

    def test_table_name_delegates_to_klass
      relation = Relation.new FakeKlass.new('foo'), :b
      assert_equal 'foo', relation.table_name
    end

    def test_scope_for_create
      relation = Relation.new :a, :b
      assert_equal({}, relation.scope_for_create)
    end

    def test_create_with_value
      relation = Relation.new Post, Post.arel_table
      hash = { 'hello' => 'world' }
      relation.create_with_value = hash
      assert_equal hash, relation.scope_for_create
    end

    def test_create_with_value_with_wheres
      relation = Relation.new Post, Post.arel_table
      relation.where_values << relation.table[:id].eq(10)
      relation.create_with_value = {:hello => 'world'}
      assert_equal({'hello' => 'world', 'id' => 10}, relation.scope_for_create)
    end

    # FIXME: is this really wanted or expected behavior?
    def test_scope_for_create_is_cached
      relation = Relation.new Post, Post.arel_table
      assert_equal({}, relation.scope_for_create)

      relation.where_values << relation.table[:id].eq(10)
      assert_equal({}, relation.scope_for_create)

      relation.create_with_value = {:hello => 'world'}
      assert_equal({}, relation.scope_for_create)
    end

    def test_empty_eager_loading?
      relation = Relation.new :a, :b
      assert !relation.eager_loading?
    end

    def test_eager_load_values
      relation = Relation.new :a, :b
      relation.eager_load_values << :b
      assert relation.eager_loading?
    end
  end
end