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# encoding: utf-8
require "cases/helper"
require 'active_record/base'
require 'active_record/connection_adapters/postgresql_adapter'
class PostgresqlJSONTest < ActiveRecord::TestCase
class JsonDataType < ActiveRecord::Base
self.table_name = 'json_data_type'
end
def setup
@connection = ActiveRecord::Base.connection
begin
@connection.transaction do
@connection.create_table('json_data_type') do |t|
t.json 'payload', :default => {}
end
end
rescue ActiveRecord::StatementInvalid
return skip "do not test on PG without json"
end
@column = JsonDataType.columns.find { |c| c.name == 'payload' }
end
def teardown
@connection.execute 'drop table if exists json_data_type'
end
def test_column
assert_equal :json, @column.type
end
def test_change_table_supports_json
@connection.transaction do
@connection.change_table('json_data_type') do |t|
t.json 'users', default: '{}'
end
JsonDataType.reset_column_information
column = JsonDataType.columns.find { |c| c.name == 'users' }
assert_equal :json, column.type
raise ActiveRecord::Rollback # reset the schema change
end
ensure
JsonDataType.reset_column_information
end
def test_type_cast_json
assert @column
data = "{\"a_key\":\"a_value\"}"
hash = @column.class.string_to_json data
assert_equal({'a_key' => 'a_value'}, hash)
assert_equal({'a_key' => 'a_value'}, @column.type_cast(data))
assert_equal({}, @column.type_cast("{}"))
assert_equal({'key'=>nil}, @column.type_cast('{"key": null}'))
assert_equal({'c'=>'}','"a"'=>'b "a b'}, @column.type_cast(%q({"c":"}", "\"a\"":"b \"a b"})))
end
def test_rewrite
@connection.execute "insert into json_data_type (payload) VALUES ('{\"k\":\"v\"}')"
x = JsonDataType.first
x.payload = { '"a\'' => 'b' }
assert x.save!
end
def test_select
@connection.execute "insert into json_data_type (payload) VALUES ('{\"k\":\"v\"}')"
x = JsonDataType.first
assert_equal({'k' => 'v'}, x.payload)
end
def test_select_multikey
@connection.execute %q|insert into json_data_type (payload) VALUES ('{"k1":"v1", "k2":"v2", "k3":[1,2,3]}')|
x = JsonDataType.first
assert_equal({'k1' => 'v1', 'k2' => 'v2', 'k3' => [1,2,3]}, x.payload)
end
def test_null_json
@connection.execute %q|insert into json_data_type (payload) VALUES(null)|
x = JsonDataType.first
assert_equal(nil, x.payload)
end
end
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