Class: ZombieTestChaser

Inherits:
Chaser
  • Object
show all
Defined in:
lib/zombie-chaser/zombie_test_chaser.rb

Constant Summary collapse

VERSION =

This should be used, but isn’t, in Rakefile.

'0.1.0'
@@test_pattern = 
'test/test_*.rb'
@@tests_loaded = 
false
@@world = 
nil

Constants inherited from Chaser

Chaser::NULL_PATH, Chaser::WINDOZE

Instance Attribute Summary

Attributes inherited from Chaser

#klass, #klass_name, #method, #method_name, #old_method

Class Method Summary collapse

Instance Method Summary collapse

Methods inherited from Chaser

#aliasing_class, #calculate_proxy_method_name, #clean_method_name, debug, debug=, guess_timeout?, #interface_puts, #modify_class_method, #modify_instance_method, #modify_method, #mutate_value, #rand_number, #rand_range, #rand_string, #rand_symbol, #record_passing_mutation, #run_tests, #silence_stream, #tests_pass?, timeout=, #unmodify_class_method, #unmodify_instance_method, #unmodify_method, #validate

Constructor Details

#initialize(klass_name = nil, method_name = nil) ⇒ ZombieTestChaser

Returns a new instance of ZombieTestChaser.



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# File 'lib/zombie-chaser/zombie_test_chaser.rb', line 134

def initialize(klass_name=nil, method_name=nil)
  self.class.create_world unless @@tests_loaded
  super(klass_name, method_name, Reporter.new(self.class.world.interface))
end

Class Method Details

.create_world ⇒ Object 



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# File 'lib/zombie-chaser/zombie_test_chaser.rb', line 26

def self.create_world
  @@tests_loaded = true
  @@world = World.new_using_test_unit_handler(@@test_pattern)
end

.current_class_names(exclude_list) ⇒ Object 



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# File 'lib/zombie-chaser/zombie_test_chaser.rb', line 35

def self.current_class_names(exclude_list)
  result = []
  ObjectSpace.each_object(Class) do |klass|
    next if klass.to_s.include?("Class:0x")
    next unless klass.ancestors.all? {|ancestor| (ancestor.to_s.split(/::/) & exclude_list).empty?}
    result << klass.to_s
  end
  result
end

.test_pattern=(value) ⇒ Object 



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# File 'lib/zombie-chaser/zombie_test_chaser.rb', line 22

def self.test_pattern=(value)
  @@test_pattern = value
end

.validate(klass_name = nil, method_name = nil, force = false) ⇒ Object 



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# File 'lib/zombie-chaser/zombie_test_chaser.rb', line 45

def self.validate(klass_name = nil, method_name = nil, force = false)
  pre_existing_class_names = self.current_class_names([]) unless klass_name
  create_world

  if klass_name
    klass = klass_name.to_class
    # Does the method exist?
    klass_methods = klass.singleton_methods(false).collect {|meth| "self.#{meth}"}
    if method_name
      if method_name =~ /self\./
        abort "Unknown method: #{klass_name}.#{method_name.gsub('self.', '')}" unless klass_methods.include? method_name
      else
        abort "Unknown method: #{klass_name}##{method_name}" unless klass.instance_methods(false).map{|sym| sym.to_s}.include? method_name
      end
    end
  end

  initial_time = Time.now

  chaser = self.new(klass_name)

  all_good = nil

  chaser.while_world_running do

    passed = chaser.human_survives?

    unless force or passed then
      abort "Initial run of tests failed... fix and run chaser again"
    end

    if self.guess_timeout? then
      running_time = Time.now - initial_time
      adjusted_timeout = (running_time * 2 < 5) ? 5 : (running_time * 2).ceil
      self.timeout = adjusted_timeout
    end

    chaser.interface_puts "Timeout set to #{adjusted_timeout} seconds."

    if passed then
      chaser.interface_puts "Initial tests pass. Let's rumble."
    else
      chaser.interface_puts "Initial tests failed but you forced things. Let's rumble."
    end
    chaser.interface_puts

    counts = Hash.new(0)

    klass_names = klass_name ? Array(klass_name) : self.current_class_names(["Test"]) - pre_existing_class_names
    klass_names.each do |block_klass_name|
      block_klass = block_klass_name.to_class

      methods = method_name ? Array(method_name) : block_klass.instance_methods(false) + block_klass.singleton_methods(false).collect {|meth| "self.#{meth}"}

      methods.sort_by{|x| x.to_s}.each do |block_method_name|
        result = self.new(block_klass_name, block_method_name).validate
        counts[result] += 1
      end
    end
    all_good = counts[false] == 0

    chaser.interface_puts "Chaser Results:",
                          "",
                          "Passed    : %3d" % counts[true],
                          "Failed    : %3d" % counts[false],
                          ""

    if all_good then
      chaser.interface_puts "All chasing was thwarted! YAY!!!"
    else
      chaser.interface_puts "Improve the tests and try again."
    end

  end
  all_good
end

.world ⇒ Object 



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# File 'lib/zombie-chaser/zombie_test_chaser.rb', line 31

def self.world
  @@world
end

Instance Method Details

#human_survives? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/zombie-chaser/zombie_test_chaser.rb', line 122

def human_survives?
  self.class.world.run_human
end

#while_world_running ⇒ Object 



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# File 'lib/zombie-chaser/zombie_test_chaser.rb', line 130

def while_world_running
  self.class.world.while_world_running{yield}
end

#zombie_survives? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/zombie-chaser/zombie_test_chaser.rb', line 126

def zombie_survives?
  self.class.world.run_next_zombie
end