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
|
share_examples_for 'A Relation' do
before :all do
# The two needed instance variables need to be set in a
# before :all callback.
# @relation is the relation being tested here.
# @expected is an array of the elements that are expected to be in
# the relation.
%w[ @relation @expected ].each do |ivar|
raise "#{ivar} needs to be defined" unless instance_variable_get(ivar)
end
# There needs to be enough items to be able to run all the tests
raise "@expected needs to have at least 6 items" unless @expected.length >= 6
end
before :each do
@expected = @expected.dup
end
describe "#each" do
it "iterates over the rows in any order" do
@relation.should have_rows(@expected)
end
end
describe "#where" do
before :all do
@expected = @expected.sort_by { |r| r[@relation[:age]] }
@pivot = @expected[@expected.length / 2]
end
it "finds rows with an equal to predicate" do
expected = @expected.select { |r| r[@relation[:age]] == @pivot[@relation[:age]] }
@relation.where(@relation[:age].eq(@pivot[@relation[:age]])).should have_rows(expected)
end
it "finds rows with a noteq predicate" do
expected = @expected.select { |r| r[@relation[:age]] != @pivot[@relation[:age]] }
@relation.where(@relation[:age].noteq(@pivot[@relation[:age]])).should have_rows(expected)
end
it "finds rows with a less than predicate" do
expected = @expected.select { |r| r[@relation[:age]] < @pivot[@relation[:age]] }
@relation.where(@relation[:age].lt(@pivot[@relation[:age]])).should have_rows(expected)
end
it "finds rows with a less than or equal to predicate" do
expected = @expected.select { |r| r[@relation[:age]] <= @pivot[@relation[:age]] }
@relation.where(@relation[:age].lteq(@pivot[@relation[:age]])).should have_rows(expected)
end
it "finds rows with a greater than predicate" do
expected = @expected.select { |r| r[@relation[:age]] > @pivot[@relation[:age]] }
@relation.where(@relation[:age].gt(@pivot[@relation[:age]])).should have_rows(expected)
end
it "finds rows with a greater than or equal to predicate" do
expected = @expected.select { |r| r[@relation[:age]] >= @pivot[@relation[:age]] }
@relation.where(@relation[:age].gteq(@pivot[@relation[:age]])).should have_rows(expected)
end
it "finds rows with a matches predicate" do
expected = @expected.select { |r| r[@relation[:name]] =~ /#{@pivot[@relation[:name]]}/ }
@relation.where(@relation[:name].matches(/#{@pivot[@relation[:name]]}/)).should have_rows(expected)
end
it "finds rows with a not matches predicate" do
expected = @expected.select { |r| r[@relation[:name]] !~ /#{@pivot[@relation[:name]]}/ }
@relation.where(@relation[:name].notmatches(/#{@pivot[@relation[:name]]}/)).should have_rows(expected)
end
it "finds rows with an in predicate" do
expected = @expected.select {|r| r[@relation[:age]] >=3 && r[@relation[:age]] <= 20}
@relation.where(@relation[:age].in(3..20)).should have_rows(expected)
end
it "finds rows with a not in predicate" do
expected = @expected.select {|r| !(r[@relation[:age]] >=3 && r[@relation[:age]] <= 20)}
@relation.where(@relation[:age].notin(3..20)).should have_rows(expected)
end
it "finds rows with a not predicate" do
expected = @expected.select {|r| !(r[@relation[:age]] >= 3 && r[@relation[:age]] <= 20)}
@relation.where(@relation[:age].in(3..20).not).should have_rows(expected)
end
it "finds rows with a grouped predicate of class Any" do
expected = @expected.select {|r| [2,4,8,16].include?(r[@relation[:age]])}
@relation.where(@relation[:age].in_any([2,4], [8, 16])).should have_rows(expected)
end
it "finds rows with a grouped predicate of class All" do
expected = @expected.select {|r| r[@relation[:name]] =~ /Name/ && r[@relation[:name]] =~ /1/}
@relation.where(@relation[:name].matches_all(/Name/, /1/)).should have_rows(expected)
end
end
describe "#order" do
describe "by one attribute" do
before :all do
@expected.map! { |r| r[@relation[:age]] }
@expected.sort!
end
it "can be specified as ascending order" do
actual = []
@relation.order(@relation[:age].asc).each { |r| actual << r[@relation[:age]] }
actual.should == @expected
end
it "can be specified as descending order" do
actual = []
@relation.order(@relation[:age].desc).each { |r| actual << r[@relation[:age]] }
actual.should == @expected.reverse
end
end
describe "by two attributes" do
it "works"
end
end
describe "#take" do
it "returns a relation" do
@relation.take(3).should be_a(Arel::Relation)
end
it "returns X items from the collection" do
length = @expected.length
@relation.take(3).each do |resource|
@expected.delete_if { |r| r.tuple == resource.tuple }
end
@expected.length.should == length - 3
end
it "works with ordering" do
expected = @expected.sort_by { |r| [r[@relation[:age]], r[@relation[:id]]] }.map { |r| r[@relation[:id]] }
actual = @relation.order(@relation[:age].asc, @relation[:id].asc).take(3).map { |r| r[@relation[:id]] }
actual.should == expected[0,3]
end
end
describe "#skip" do
it "returns a relation" do
@relation.skip(3).should be_a(Arel::Relation)
end
it "skips X items from the collection" do
length = @expected.length
@relation.skip(3).each do |resource|
@expected.delete_if { |r| r.tuple == resource.tuple }
end
@expected.length.should == 3
end
it "works with ordering" do
expected = @expected.sort_by { |r| [r[@relation[:age]], r[@relation[:id]]] }.map { |r| r[@relation[:id]] }
actual = @relation.order(@relation[:age].asc, @relation[:id].asc).skip(3).map { |r| r[@relation[:id]] }
actual.should == expected[3..-1]
end
end
end
|
