xnzacc

# ref: http://37signals.com/svn/posts/3004-ab-testing-tech-note-determining-sample-size
#
# p1 = Variable A results. e.g. conversion rate from test A
# p2 = Variable B results
# power = chance of false negative (A power of 0.80 means that there is an 80% chance that if there was an effect, we would detect it )
# sig.level = chance of false positive (0.05 = 5%)

power.prop.test(p1=0.1, p2=0.11, power=0.8, alternative='two.sided', sig.level=0.05)

# Output will be a number signifying minimal sample size that meets the above criteria

xnzacc

# More info at https://github.com/guard/guard#readme

# Instructions:
# 1) gem install guard guard-shell
# 2) run guard in root

# run test with 'redgreen' gem(for colour) if available otherwise with plain ruby
guard "shell" do
  watch(%r{^(.+)/.+\.rb$}) do |m|
  	if File.exists?("#{m[1]}/#{m[1]}_test.rb")

xnzacc

def within_list(css_class)
  css_selector = css_class.gsub(/ /, '.') #stack the css classes for selection
  list = current_dom.at("ol.#{css_selector}") || current_dom.at("ul.#{css_selector}") # Could add an opt param to the method to make this explicit - for now we don't care
  assert_not_nil(list, "Expected to find a ul or li tag matching the css class '#{css_class}'")
  yield list
end

Then /^I should see the text "(.*)" in the "(.*)" list$/ do |text, css_class| #"
  within_list(css_class) do |list|
    matching_list_items = list.search("li").select{ |li| strip_html_tags_from(li.inner_html) =~ escape_text_for_regexp(text) }