Module: GovukAbTesting::RspecCapybaraHelpers

Defined in:
lib/govuk_ab_testing/rspec_capybara_helpers.rb

Instance Method Summary collapse

Instance Method Details

#with_variant(args) ⇒ Object 



3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
 
# File 'lib/govuk_ab_testing/rspec_capybara_helpers.rb', line 3

def with_variant(args)
  unless defined?(page)
    raise "The variable 'page' is not defined, are you using capybara?"
  end

  ab_test_name, variant = args.first
  dimension = args[:dimension]
  ab_test =
    GovukAbTesting::AbTest.new(ab_test_name.to_s, dimension: dimension)

  page.driver.header(ab_test.response_header, variant)

  yield

  expect(ab_test.response_header).to eq(page.response_headers['Vary'])

  unless args[:assert_meta_tag] == false
    content = [ab_test.meta_tag_name, variant].join(':')
    ab_test_metatag = page.find("meta[name='govuk:ab-test']", visible: :all)

    expect(ab_test_metatag['content']).to eq(content)

    if dimension.nil?
      expect(ab_test_metatag['data-analytics-dimension']).to_not be_nil
    else
      expect(ab_test_metatag['data-analytics-dimension']).to eq(dimension.to_s)
    end
  end
end