Module: KitchenSink

Defined in:
lib/kitchen.rb

Overview

Used to create one of “everything”, where everything includes objects that can be instantiated with no arguments

Defined Under Namespace

Classes: KitchenSinkError

Constant Summary collapse

Version = 
'0.0.3'

Instance Method Summary collapse

Instance Method Details

#edge_cases_for(klass) ⇒ Object

Returns an array of common edge cases for a specified class klass



67
68
69
70
71
72
73
74
75
76
77
78
 
# File 'lib/kitchen.rb', line 67

def edge_cases_for(klass)
  objects = []
  case
  when klass == String
   objects = %w[ "", " ", "\", "'", "`"]
  when klass == Array
    objects = [[], [1], [""], [0], [10000000000], [Class]]      
  when klass == Hash
    objects = [{1 => nil}, {2=>[]}, {3 => "a"}, {4 => 0}, {}]
  end
  return objects
end

#everything ⇒ Object

Returns one of each object instantiated with it’s default value



12
13
14
15
16
17
18
19
20
21
22
23
24
25
 
# File 'lib/kitchen.rb', line 12

def everything
  objects = []
  ObjectSpace.each_object(Class) do |c|
    if c.methods.include?('new')
      begin
        m = c.method(:new)
        o = m.call if m.arity == -1
        objects.push(o)
      rescue ArgumentError, ThreadError, TypeError
      end
    end
  end
  objects
end

#everything_but(klass) ⇒ Object

Returns one of everything except the type specified (as a class) klass



29
30
31
32
33
34
35
36
37
38
39
40
41
 
# File 'lib/kitchen.rb', line 29

def everything_but(klass)
  begin
    unless klass.is_a?(Class)
      raise KitchenSinkError , "#{klass} isn't a Class"
    end
    rescue NoMethodError
    raise KitchenSinkError, "#{klass} isn't a Class"
  end
  objects = everything
  objects.delete_if do |o|
    o.kind_of?(klass)
  end
end

#everything_that_cannot(method) ⇒ Object

Returns one of everything that cannot respond to the method method



45
46
47
48
49
50
 
# File 'lib/kitchen.rb', line 45

def everything_that_cannot(method)
  objects = everything
  objects.delete_if do |o|
    o.respond_to?(method)
  end
end

#everything_that_cannot_be_coerced_into(klass) ⇒ Object Also known as: everything_that_aint

Returns one of everything that cannot be coereced into a specified class klass



54
55
56
57
58
59
60
61
62
 
# File 'lib/kitchen.rb', line 54

def everything_that_cannot_be_coerced_into(klass)
  objects = everything
  objects.delete_if do |o|
    begin
      klass.new(o)
    rescue
    end
  end
end