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
|
require 'yaml'
module ActiveSupport
module Deprecation
mattr_accessor :debug
self.debug = false
# Choose the default warn behavior according to RAILS_ENV.
# Ignore deprecation warnings in production.
DEFAULT_BEHAVIORS = {
'test' => Proc.new { |message, callstack|
$stderr.puts(message)
$stderr.puts callstack.join("\n ") if debug
},
'development' => Proc.new { |message, callstack|
RAILS_DEFAULT_LOGGER.warn message
RAILS_DEFAULT_LOGGER.debug callstack.join("\n ") if debug
}
}
class << self
def warn(message = nil, callstack = caller)
behavior.call(deprecation_message(callstack, message), callstack) if behavior && !silenced?
end
def default_behavior
if defined?(RAILS_ENV)
DEFAULT_BEHAVIORS[RAILS_ENV.to_s]
else
DEFAULT_BEHAVIORS['test']
end
end
# Have deprecations been silenced?
def silenced?
@silenced = false unless defined?(@silenced)
@silenced
end
# Silence deprecations for the duration of the provided block. For internal
# use only.
def silence
old_silenced, @silenced = @silenced, true # We could have done behavior = nil...
yield
ensure
@silenced = old_silenced
end
attr_writer :silenced
private
def deprecation_message(callstack, message = nil)
file, line, method = extract_callstack(callstack)
message ||= "You are using deprecated behavior which will be removed from Rails 2.0."
"DEPRECATION WARNING: #{message} See http://www.rubyonrails.org/deprecation for details. (called from #{method} at #{file}:#{line})"
end
def extract_callstack(callstack)
callstack.first.match(/^(.+?):(\d+)(?::in `(.*?)')?/).captures
end
end
# Behavior is a block that takes a message argument.
mattr_accessor :behavior
self.behavior = default_behavior
# Warnings are not silenced by default.
self.silenced = false
module ClassMethods
# Declare that a method has been deprecated.
def deprecate(*method_names)
method_names.each do |method_name|
alias_method_chain(method_name, :deprecation) do |target, punctuation|
class_eval(<<-EOS, __FILE__, __LINE__)
def #{target}_with_deprecation#{punctuation}(*args, &block)
::ActiveSupport::Deprecation.warn("#{method_name} is deprecated and will be removed from Rails 2.0", caller)
#{target}_without_deprecation#{punctuation}(*args, &block)
end
EOS
end
end
end
end
module Assertions
def assert_deprecated(match = nil, &block)
warnings = collect_deprecations(&block)
assert !warnings.empty?, "Expected a deprecation warning within the block but received none"
if match
match = Regexp.new(Regexp.escape(match)) unless match.is_a?(Regexp)
assert warnings.any? { |w| w =~ match }, "No deprecation warning matched #{match}: #{warnings.join(', ')}"
end
end
def assert_not_deprecated(&block)
deprecations = collect_deprecations(&block)
assert deprecations.empty?, "Expected no deprecation warning within the block but received #{deprecations.size}: \n #{deprecations * "\n "}"
end
private
def collect_deprecations
old_behavior = ActiveSupport::Deprecation.behavior
deprecations = []
ActiveSupport::Deprecation.behavior = Proc.new do |message, callstack|
deprecations << message
end
yield
deprecations
ensure
ActiveSupport::Deprecation.behavior = old_behavior
end
end
# Stand-in for @request, @attributes, etc.
class DeprecatedInstanceVariableProxy
instance_methods.each { |m| undef_method m unless m =~ /^__/ }
def initialize(instance, method, var = "@#{method}")
@instance, @method, @var = instance, method, var
end
private
def warn(callstack, called, args)
ActiveSupport::Deprecation.warn("#{@var} is deprecated! Call #{@method}.#{called} instead of #{@var}.#{called}. Args: #{args.inspect}", callstack)
end
def method_missing(called, *args, &block)
warn caller, called, args
@instance.__send__(@method).__send__(called, *args, &block)
end
end
end
end
class Module
include ActiveSupport::Deprecation::ClassMethods
end
module Test
module Unit
class TestCase
include ActiveSupport::Deprecation::Assertions
end
end
end
|
