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require 'json'
#
#
# Base class for custodian protocol-tests
#
# Each subclass will register themselves, via the call
# to 'register_test_type'.
#
# This class is a factory that will return the correct
# derived class for a given line from our configuration
# file - or that line encoded as a JSON string.
#
#
class TestFactory
#
# The subclasses we have.
#
@@subclasses = { }
#
# Create a test-type object given a line of text from our parser.
#
# The line will be like "target must run tcp|ssh|ftp|smtp .."
#
#
def self.create( line )
#
# JSON ?
#
if ( line =~ /^\{(.*)\}$/ )
begin
obj = JSON.parse( line );
raise ArgumentError, "JSON object was not a hash" unless obj.kind_of?(Hash)
line = obj["line"]
raise ArgumentError, "obj[:line] was nil" unless (!line.nil?)
rescue =>ex
raise ArgumentError, "Line did not deserialize from JSON: #{line} - #{ex}"
end
end
#
# If this is an obvious protocol test.
#
if ( line =~ /must\s+run\s+(\S+)(\s+|\.|$)/ )
test_type = $1.dup
test_type.chomp!( "." )
c = @@subclasses[test_type]
if c
c.new( line )
else
raise ArgumentError, "Bad test type: #{test_type}"
end
else
raise "Unknown line given - Failed to instantiate a suitable protocol-test."
end
end
#
# Register a new test type - this must be called by our derived classes
#
def self.register_test_type name
@@subclasses[name] = self
end
#
# Return an array of test-types we know about
#
# i.e. Derived classes that have registered themselves.
#
#
def types
@@subclasses
end
end
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