Wrong number of arguments in initialize

ruby-talk
1

I tried to initalize my methods and I get an error
  def initialize(name,browser,username)
    @s_name=name
    @browser=browser
    @username=username
  end #def initialize(dc)
attr_accessor :name,:browser,:username

C:/RubyInstall/ruby/lib/ruby/1.8/test/unit/testcase.rb:59:in
`initialize': wrong number of arguments (1 for 3) (ArgumentError)

I honestly dont get it now, this is silly

···

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2

Arti Singh wrote:

I tried to initalize my methods and I get an error
  def initialize(name,browser,username)
  

You define intialize to ask for 3 arguments, you don't give any of them
defaults.....

    @s_name=name
    @browser=browser
    @username=username
  end #def initialize(dc)
  
attr_accessor :name,:browser,:username

C:/RubyInstall/ruby/lib/ruby/1.8/test/unit/testcase.rb:59:in
`initialize': wrong number of arguments (1 for 3) (ArgumentError)

You don't show where you call the initialize method, but the error says
you only gave one argument, and that it was called on line 59...

I honestly dont get it now, this is silly
  
I get bit by this one all the time :slight_smile:

3

but what's the test code you're executing that raises the error?

···

On Monday November 9 2009 4:18:24 pm Arti Singh wrote:

I tried to initalize my methods and I get an error
  def initialize(name,browser,username)
    @s_name=name
    @browser=browser
    @username=username
  end #def initialize(dc)
attr_accessor :name,:browser,:username

C:/RubyInstall/ruby/lib/ruby/1.8/test/unit/testcase.rb:59:in
`initialize': wrong number of arguments (1 for 3) (ArgumentError)

I honestly dont get it now, this is silly

4

Arti Singh wrote:

I tried to initalize my methods and I get an error
  def initialize(name,browser,username)
    @s_name=name
    @browser=browser
    @username=username
  end #def initialize(dc)
attr_accessor :name,:browser,:username

C:/RubyInstall/ruby/lib/ruby/1.8/test/unit/testcase.rb:59:in
`initialize': wrong number of arguments (1 for 3) (ArgumentError)

Open that file in a text editor, go to line 59, and you'll see

          catch(:invalid_test) do
            suite << new(test) #### ERROR RAISED HERE
          end

Then scroll up and you'll see you're inside the 'suite' class method of
class Test::Unit::TestCase, and higher up you'll see

      def initialize(test_method_name)
        ...

That is, when a Test::Unit::TestCase instance is created, it takes a
single argument which is the test method name.

Almost certainly you should not be meddling with the 'initialize' method
of Test::Unit::TestCase. What exactly are you trying to do? I guess you
want to be able to run the same test suite multiple times with different
parameters? The simplest way may be

  def setup
    @s_name=ENV['TEST_S_NAME']
    @browser=ENV['TEST_BROWSER']
    @username=ENV['TEST_USERNAME']
  end

Then you can do

  rake test TEST_S_NAME=xxx TEST_BROWSER=yyy TEST_USERNAME=zzz

An alternative way is to have a separate class for each of your
scenarios, and share the test methods using subclassing or module
mixins. Then running the suite will run all of the variations in one go.

  require 'test/unit'

  class TestFoo < Test::Unit::TestCase
    def setup
      @browser = "foo browser"
    end
    def test_it
      puts "Browser is #{@browser}"
      assert true
    end
  end

  class TestBar < TestFoo
    def setup
      @browser = "bar browser"
    end
  end

···

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