Class: MockDnsServer::PredicateFactory

Inherits:
Object
  • Object
show all
Defined in:
lib/mock_dns_server/predicate_factory.rb

Overview

Each method returns a predicate in the form of a lambda or proc that takes an incoming object (usually a Dnsruby::Message) object as a parameter and returns (as predicates do) true or false.

Instance Method Summary collapse

Instance Method Details

#a_request(qname) ⇒ Object

Convenience method for testing a request of qtype ‘A’ with the given qname.



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# File 'lib/mock_dns_server/predicate_factory.rb', line 67

def a_request(qname)
  qtype_and_qname('A', qname)
end

#all(*predicates) ⇒ Object

TODO: Case insensitive? TODO: Add sender to signature for tcp/udp, etc.?



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# File 'lib/mock_dns_server/predicate_factory.rb', line 18

def all(*predicates)
  ->(message, protocol = nil) do
    predicates.all? { |p| p.call(message, protocol) }
  end
end

#always_false ⇒ Object 



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# File 'lib/mock_dns_server/predicate_factory.rb', line 97

def always_false
  ->(_, _) { false }
end

#always_true ⇒ Object 



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# File 'lib/mock_dns_server/predicate_factory.rb', line 93

def always_true
  ->(_, _) { true }
end

#any(*predicates) ⇒ Object 



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# File 'lib/mock_dns_server/predicate_factory.rb', line 24

def any(*predicates)
  ->(message, protocol = nil) do
    predicates.any? { |p| p.call(message, protocol) }
  end
end

#axfr ⇒ Object 



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# File 'lib/mock_dns_server/predicate_factory.rb', line 48

def axfr
  qtype('AXFR')
end

#dns ⇒ Object 



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# File 'lib/mock_dns_server/predicate_factory.rb', line 36

def dns
  ->(message, _ = nil) { message.is_a?(Dnsruby::Message) }
end

#from_tcp ⇒ Object 



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# File 'lib/mock_dns_server/predicate_factory.rb', line 85

def from_tcp
  ->(_, protocol) { protocol == :tcp }
end

#from_udp ⇒ Object 



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# File 'lib/mock_dns_server/predicate_factory.rb', line 89

def from_udp
  ->(_, protocol) { protocol == :udp }
end

#ixfr ⇒ Object 



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# File 'lib/mock_dns_server/predicate_factory.rb', line 44

def ixfr
  qtype('IXFR')
end

#mt(message) ⇒ Object

shorthand for the MessageTransformers instance



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# File 'lib/mock_dns_server/predicate_factory.rb', line 11

def mt(message)
  MessageTransformer.new(message)
end

#none(*predicates) ⇒ Object 



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# File 'lib/mock_dns_server/predicate_factory.rb', line 30

def none(*predicates)
  ->(message, protocol = nil) do
    predicates.none? { |p| p.call(message, protocol) }
  end
end

#qclass(qclass) ⇒ Object 



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# File 'lib/mock_dns_server/predicate_factory.rb', line 77

def qclass(qclass)
  ->(message, _ = nil) { dns.(message) && eq_case_insensitive(mt(message).qclass, qclass) }
end

#qname(qname) ⇒ Object 



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# File 'lib/mock_dns_server/predicate_factory.rb', line 81

def qname(qname)
  ->(message, _ = nil) { dns.(message) && eq_case_insensitive(mt(message).qname, qname) }
end

#qtype(qtype) ⇒ Object 



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# File 'lib/mock_dns_server/predicate_factory.rb', line 71

def qtype(qtype)
  ->(message, _ = nil) do
    dns.(message) && eq_case_insensitive(mt(message).qtype, qtype)
  end
end

#qtype_and_qname(qtype, qname) ⇒ Object

Convenience method for testing for a specific qtype and qname.



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# File 'lib/mock_dns_server/predicate_factory.rb', line 62

def qtype_and_qname(qtype, qname)
  all(qtype(qtype), qname(qname))
end

#soa ⇒ Object 



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# File 'lib/mock_dns_server/predicate_factory.rb', line 40

def soa
  qtype('SOA')
end

#xfr ⇒ Object 



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# File 'lib/mock_dns_server/predicate_factory.rb', line 52

def xfr
  any(axfr, ixfr)
end

#zone_load ⇒ Object

Returns true for messages relating to data from the zone load.



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# File 'lib/mock_dns_server/predicate_factory.rb', line 57

def zone_load
  any(xfr, soa)
end