aboutsummaryrefslogtreecommitdiffstats
path: root/activerecord/test/cases/test_case.rb
blob: 7761ea56126d2c0003e01e3433eff0b52f0f1205 (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
require 'active_support/test_case'
require 'active_support/testing/stream'

module ActiveRecord
  # = Active Record Test Case
  #
  # Defines some test assertions to test against SQL queries.
  class TestCase < ActiveSupport::TestCase #:nodoc:
    include ActiveSupport::Testing::Stream

    def teardown
      SQLCounter.clear_log
    end

    def assert_date_from_db(expected, actual, message = nil)
      assert_equal expected.to_s, actual.to_s, message
    end

    def capture_sql
      SQLCounter.clear_log
      yield
      SQLCounter.log_all.dup
    end

    def assert_sql(*patterns_to_match)
      capture_sql { yield }
    ensure
      failed_patterns = []
      patterns_to_match.each do |pattern|
        failed_patterns << pattern unless SQLCounter.log_all.any?{ |sql| pattern === sql }
      end
      assert failed_patterns.empty?, "Query pattern(s) #{failed_patterns.map(&:inspect).join(', ')} not found.#{SQLCounter.log.size == 0 ? '' : "\nQueries:\n#{SQLCounter.log.join("\n")}"}"
    end

    def assert_queries(num = 1, options = {})
      ignore_none = options.fetch(:ignore_none) { num == :any }
      SQLCounter.clear_log
      x = yield
      the_log = ignore_none ? SQLCounter.log_all : SQLCounter.log
      if num == :any
        assert_operator the_log.size, :>=, 1, "1 or more queries expected, but none were executed."
      else
        mesg = "#{the_log.size} instead of #{num} queries were executed.#{the_log.size == 0 ? '' : "\nQueries:\n#{the_log.join("\n")}"}"
        assert_equal num, the_log.size, mesg
      end
      x
    end

    def assert_no_queries(options = {}, &block)
      options.reverse_merge! ignore_none: true
      assert_queries(0, options, &block)
    end

    def assert_column(model, column_name, msg=nil)
      assert has_column?(model, column_name), msg
    end

    def assert_no_column(model, column_name, msg=nil)
      assert_not has_column?(model, column_name), msg
    end

    def has_column?(model, column_name)
      model.reset_column_information
      model.column_names.include?(column_name.to_s)
    end
  end

  class PostgreSQLTestCase < TestCase
    def self.run(*args)
      super if current_adapter?(:PostgreSQLAdapter)
    end
  end

  class Mysql2TestCase < TestCase
    def self.run(*args)
      super if current_adapter?(:Mysql2Adapter)
    end
  end

  class MysqlTestCase < TestCase
    def self.run(*args)
      super if current_adapter?(:MysqlAdapter)
    end
  end

  class SQLite3TestCase < TestCase
    def self.run(*args)
      super if current_adapter?(:SQLite3Adapter)
    end
  end

  class SQLCounter
    class << self
      attr_accessor :ignored_sql, :log, :log_all
      def clear_log; self.log = []; self.log_all = []; end
    end

    self.clear_log

    self.ignored_sql = [/^PRAGMA/, /^SELECT currval/, /^SELECT CAST/, /^SELECT @@IDENTITY/, /^SELECT @@ROWCOUNT/, /^SAVEPOINT/, /^ROLLBACK TO SAVEPOINT/, /^RELEASE SAVEPOINT/, /^SHOW max_identifier_length/, /^BEGIN/, /^COMMIT/]

    # FIXME: this needs to be refactored so specific database can add their own
    # ignored SQL, or better yet, use a different notification for the queries
    # instead examining the SQL content.
    oracle_ignored     = [/^select .*nextval/i, /^SAVEPOINT/, /^ROLLBACK TO/, /^\s*select .* from all_triggers/im, /^\s*select .* from all_constraints/im, /^\s*select .* from all_tab_cols/im]
    mysql_ignored      = [/^SHOW TABLES/i, /^SHOW FULL FIELDS/, /^SHOW CREATE TABLE /i, /^SHOW VARIABLES /]
    postgresql_ignored = [/^\s*select\b.*\bfrom\b.*pg_namespace\b/im, /^\s*select tablename\b.*from pg_tables\b/im, /^\s*select\b.*\battname\b.*\bfrom\b.*\bpg_attribute\b/im, /^SHOW search_path/i]
    sqlite3_ignored =    [/^\s*SELECT name\b.*\bFROM sqlite_master/im, /^\s*SELECT sql\b.*\bFROM sqlite_master/im]

    [oracle_ignored, mysql_ignored, postgresql_ignored, sqlite3_ignored].each do |db_ignored_sql|
      ignored_sql.concat db_ignored_sql
    end

    attr_reader :ignore

    def initialize(ignore = Regexp.union(self.class.ignored_sql))
      @ignore = ignore
    end

    def call(name, start, finish, message_id, values)
      sql = values[:sql]

      # FIXME: this seems bad. we should probably have a better way to indicate
      # the query was cached
      return if 'CACHE' == values[:name]

      self.class.log_all << sql
      self.class.log << sql unless ignore =~ sql
    end
  end

  ActiveSupport::Notifications.subscribe('sql.active_record', SQLCounter.new)
end