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
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
|
require 'helper'
module Arel
describe Table do
before do
@relation = Table.new(:users)
end
it 'should create join nodes' do
join = @relation.create_string_join 'foo'
assert_kind_of Arel::Nodes::StringJoin, join
assert_equal 'foo', join.left
end
it 'should create join nodes' do
join = @relation.create_join 'foo', 'bar'
assert_kind_of Arel::Nodes::InnerJoin, join
assert_equal 'foo', join.left
assert_equal 'bar', join.right
end
it 'should create join nodes with a klass' do
join = @relation.create_join 'foo', 'bar', Arel::Nodes::FullOuterJoin
assert_kind_of Arel::Nodes::FullOuterJoin, join
assert_equal 'foo', join.left
assert_equal 'bar', join.right
end
it 'should create join nodes with a klass' do
join = @relation.create_join 'foo', 'bar', Arel::Nodes::OuterJoin
assert_kind_of Arel::Nodes::OuterJoin, join
assert_equal 'foo', join.left
assert_equal 'bar', join.right
end
it 'should create join nodes with a klass' do
join = @relation.create_join 'foo', 'bar', Arel::Nodes::RightOuterJoin
assert_kind_of Arel::Nodes::RightOuterJoin, join
assert_equal 'foo', join.left
assert_equal 'bar', join.right
end
it 'should return an insert manager' do
im = @relation.compile_insert 'VALUES(NULL)'
assert_kind_of Arel::InsertManager, im
im.into Table.new(:users)
assert_equal "INSERT INTO \"users\" VALUES(NULL)", im.to_sql
end
it 'should return IM from insert_manager' do
im = @relation.insert_manager
assert_kind_of Arel::InsertManager, im
assert_equal im.engine, @relation.engine
end
describe 'skip' do
it 'should add an offset' do
sm = @relation.skip 2
sm.to_sql.must_be_like "SELECT FROM \"users\" OFFSET 2"
end
end
describe 'select_manager' do
it 'should return an empty select manager' do
sm = @relation.select_manager
sm.to_sql.must_be_like 'SELECT'
end
end
describe 'having' do
it 'adds a having clause' do
mgr = @relation.having @relation[:id].eq(10)
mgr.to_sql.must_be_like %{
SELECT FROM "users" HAVING "users"."id" = 10
}
end
end
describe 'backwards compat' do
describe 'join' do
it 'noops on nil' do
mgr = @relation.join nil
mgr.to_sql.must_be_like %{ SELECT FROM "users" }
end
it 'takes a second argument for join type' do
right = @relation.alias
predicate = @relation[:id].eq(right[:id])
mgr = @relation.join(right, Nodes::OuterJoin).on(predicate)
mgr.to_sql.must_be_like %{
SELECT FROM "users"
LEFT OUTER JOIN "users" "users_2"
ON "users"."id" = "users_2"."id"
}
end
end
describe 'join' do
it 'creates an outer join' do
right = @relation.alias
predicate = @relation[:id].eq(right[:id])
mgr = @relation.outer_join(right).on(predicate)
mgr.to_sql.must_be_like %{
SELECT FROM "users"
LEFT OUTER JOIN "users" "users_2"
ON "users"."id" = "users_2"."id"
}
end
end
end
describe 'group' do
it 'should create a group' do
manager = @relation.group @relation[:id]
manager.to_sql.must_be_like %{
SELECT FROM "users" GROUP BY "users"."id"
}
end
end
describe 'alias' do
it 'should create a node that proxies to a table' do
@relation.aliases.must_equal []
node = @relation.alias
@relation.aliases.must_equal [node]
node.name.must_equal 'users_2'
node[:id].relation.must_equal node
end
end
describe 'new' do
it 'should accept an engine' do
rel = Table.new :users, 'foo'
rel.engine.must_equal 'foo'
end
it 'should accept a hash' do
rel = Table.new :users, :engine => 'foo'
rel.engine.must_equal 'foo'
end
it 'ignores as if it equals name' do
rel = Table.new :users, :as => 'users'
rel.table_alias.must_be_nil
end
end
describe 'order' do
it "should take an order" do
manager = @relation.order "foo"
manager.to_sql.must_be_like %{ SELECT FROM "users" ORDER BY foo }
end
end
describe 'take' do
it "should add a limit" do
manager = @relation.take 1
manager.project Nodes::SqlLiteral.new '*'
manager.to_sql.must_be_like %{ SELECT * FROM "users" LIMIT 1 }
end
end
describe 'project' do
it 'can project' do
manager = @relation.project Nodes::SqlLiteral.new '*'
manager.to_sql.must_be_like %{ SELECT * FROM "users" }
end
it 'takes multiple parameters' do
manager = @relation.project Nodes::SqlLiteral.new('*'), Nodes::SqlLiteral.new('*')
manager.to_sql.must_be_like %{ SELECT *, * FROM "users" }
end
end
describe 'where' do
it "returns a tree manager" do
manager = @relation.where @relation[:id].eq 1
manager.project @relation[:id]
manager.must_be_kind_of TreeManager
manager.to_sql.must_be_like %{
SELECT "users"."id"
FROM "users"
WHERE "users"."id" = 1
}
end
end
it "should have a name" do
@relation.name.must_equal 'users'
end
it "should have a table name" do
@relation.table_name.must_equal 'users'
end
it "should have an engine" do
@relation.engine.must_equal Table.engine
end
describe '[]' do
describe 'when given a Symbol' do
it "manufactures an attribute if the symbol names an attribute within the relation" do
column = @relation[:id]
column.name.must_equal :id
end
end
end
describe 'equality' do
it 'is equal with equal ivars' do
relation1 = Table.new(:users, 'vroom')
relation1.aliases = %w[a b c]
relation1.table_alias = 'zomg'
relation2 = Table.new(:users, 'vroom')
relation2.aliases = %w[a b c]
relation2.table_alias = 'zomg'
array = [relation1, relation2]
assert_equal 1, array.uniq.size
end
it 'is not equal with different ivars' do
relation1 = Table.new(:users, 'vroom')
relation1.aliases = %w[a b c]
relation1.table_alias = 'zomg'
relation2 = Table.new(:users, 'vroom')
relation2.aliases = %w[x y z]
relation2.table_alias = 'zomg'
array = [relation1, relation2]
assert_equal 2, array.uniq.size
end
end
end
end
|