Quiz.md

Quiz

Tuliskan output dari kode berikut:

1.   1 + '0'

2.   puts "i love ruby" =~ /ruby/

3.   a = {
       :x => 20,
       :y => 70
     }
     b = {
       :y => 100,
       :z => 35
     }
     c = {:j => 30, :k => 45}
   
     puts a.merge(b)[:y] + c.delete(:k)

4.   class ABC
       def initialize
         x = 0
       end
   
       def y
         x + 1
       end
     end
   
     a = ABC.new
     puts a.y

5.   module A
       def x
         puts "Ax"
       end
   
       def y
         puts "Ay"
       end
     end
   
     module B
       def y
         puts "By"
       end
   
       def z
         puts "Bz"
       end
     end
   
     module C
       def x
         puts "Cy"
       end
   
       def z
         puts "Cz"
       end
     end
   
     class D
       include A
       include B
       include C
   
       def x
         puts "Dx"
       end
     end
   
     d = D.new
     d.x
     d.y
     d.z

6.   @a = 10
   
     def m
       return 1 if @a > 4
       2
     rescue
       3
     end
   
     puts m

7.   def x(y)
       if block_given?
         y + 3
       else
         5
       end
     end
   
     z = x 5 do |c|
       c + 5
     end
   
     puts z

8.   class String
       def upcase
         "omg"
       end
     end
   
     puts "hello".upcase!

9.   module M
       def method_missing(*args)
         "M"
       end
     end
   
     class C
       include M
   
       def n
         "N"
       end
     end
   
     c = C.new
     puts c.n + c.m

Berapa jumlah failed test yang terjadi:

10.   require 'minitest/autorun'
    
      class A
        def x
          "X"
        end
    
        def y
          5
        end
    
        def z
          raise "Z"
        end
      end
    
      describe A do
        before do
          @a = A.new
        end
    
        it "should do x" do
          @a.x.must_equal "X"
        end
    
        it "should do y" do
          @a.y.wont_be_nil
        end
    
        it "should do z" do
          @a.z.must_equal "Z"
        end
      end