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
|
# File 'lib/safe_monkeypatch.rb', line 18
def safe_monkeypatch(meth, options={})
options = options.dup
info = options.delete(:error)
if meth.is_a? UnboundMethod
method = meth
meth = method.name
else
begin
method = instance_method(meth)
rescue NameError => e
raise SafeMonkeypatch::InvalidMethod, "#{inspect} has no method #{meth} anymore"
end
end
source = method.source
if options.empty?
raise SafeMonkeypatch::ConfigurationError, "Provide at least one cypher name like: md5: '...'"
end
found_match = false
error_parts = ["#{inspect}##{meth} expected to have"]
options.each do |cypher_name, expected|
cypher = Digest.const_get(cypher_name.upcase)
actual = cypher.hexdigest(source)
found_match = if expected.is_a? Array
expected.any? { |e| e == actual }
else
actual == expected
end
unless found_match
error_parts << "#{cypher_name} expected: #{expected.inspect}, but has: #{actual.inspect}"
end
end
error_parts << info.to_s if info
if block_given? && found_match
yield
elsif block_given?
nil elsif not found_match
raise SafeMonkeypatch::UpstreamChanged, error_parts.join(" ")
end
end
|