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
|
# encoding: utf-8
require "cases/helper"
require 'active_record/base'
require 'active_record/connection_adapters/postgresql_adapter'
class PostgresqlArrayTest < ActiveRecord::TestCase
class PgArray < ActiveRecord::Base
self.table_name = 'pg_arrays'
end
def setup
@connection = ActiveRecord::Base.connection
@connection.transaction do
@connection.create_table('pg_arrays') do |t|
t.string 'tags', array: true
t.integer 'ratings', array: true
end
end
@column = PgArray.columns.find { |c| c.name == 'tags' }
end
def teardown
@connection.execute 'drop table if exists pg_arrays'
end
def test_column
assert_equal :string, @column.type
assert @column.array
end
def test_change_column_with_array
@connection.add_column :pg_arrays, :snippets, :string, array: true, default: []
@connection.change_column :pg_arrays, :snippets, :text, array: true, default: "{}"
PgArray.reset_column_information
column = PgArray.columns.find { |c| c.name == 'snippets' }
assert_equal :text, column.type
assert_equal [], column.default
assert column.array
end
def test_change_column_cant_make_non_array_column_to_array
@connection.add_column :pg_arrays, :a_string, :string
assert_raises ActiveRecord::StatementInvalid do
@connection.transaction do
@connection.change_column :pg_arrays, :a_string, :string, array: true
end
end
end
def test_type_cast_array
assert @column
data = '{1,2,3}'
oid_type = @column.instance_variable_get('@oid_type').subtype
# we are getting the instance variable in this test, but in the
# normal use of string_to_array, it's called from the OID::Array
# class and will have the OID instance that will provide the type
# casting
array = @column.class.string_to_array data, oid_type
assert_equal(['1', '2', '3'], array)
assert_equal(['1', '2', '3'], @column.type_cast(data))
assert_equal([], @column.type_cast('{}'))
assert_equal([nil], @column.type_cast('{NULL}'))
end
def test_rewrite
@connection.execute "insert into pg_arrays (tags) VALUES ('{1,2,3}')"
x = PgArray.first
x.tags = ['1','2','3','4']
assert x.save!
end
def test_select
@connection.execute "insert into pg_arrays (tags) VALUES ('{1,2,3}')"
x = PgArray.first
assert_equal(['1','2','3'], x.tags)
end
def test_multi_dimensional_with_strings
assert_cycle(:tags, [[['1'], ['2']], [['2'], ['3']]])
end
def test_multi_dimensional_with_integers
assert_cycle(:ratings, [[[1], [7]], [[8], [10]]])
end
def test_strings_with_quotes
assert_cycle(:tags, ['this has','some "s that need to be escaped"'])
end
def test_strings_with_commas
assert_cycle(:tags, ['this,has','many,values'])
end
def test_strings_with_array_delimiters
assert_cycle(:tags, ['{','}'])
end
def test_strings_with_null_strings
assert_cycle(:tags, ['NULL','NULL'])
end
def test_contains_nils
assert_cycle(:tags, ['1',nil,nil])
end
def test_insert_fixture
tag_values = ["val1", "val2", "val3_with_'_multiple_quote_'_chars"]
@connection.insert_fixture({"tags" => tag_values}, "pg_arrays" )
assert_equal(PgArray.last.tags, tag_values)
end
private
def assert_cycle field, array
# test creation
x = PgArray.create!(field => array)
x.reload
assert_equal(array, x.public_send(field))
# test updating
x = PgArray.create!(field => [])
x.public_send("#{field}=", array)
x.save!
x.reload
assert_equal(array, x.public_send(field))
end
end
|
