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module SnaphostSpecHelper
module Methods
def set_invariant expr, val=nil
val ||= expr
chain = expr.split(".")
method = chain.pop
before(:each) do
allow(eval(chain.join('.'))).to receive(method){ val }
end
end
end
def self.included into
into.extend Methods
end
end
RSpec.configure do |config|
config.include SnaphostSpecHelper, type: :view
end
RSpec::Matchers.define :match_actions_links_snapshot do |name|
match do |actual|
@content = Capybara::Node::Simple.new(rendered).find('.page_header').native.inner_html
expect(@content).to match_snapshot(name)
end
failure_message do |actual|
out = ["Snapshots did not match."]
snap_path = File.dirname(method_missing(:class).metadata[:file_path]) + "/__snapshots__/#{name}.snap"
temp_path = Pathname.new "#{Rails.root}/tmp/__snapshots__/#{name}.failed.snap"
FileUtils.mkdir_p temp_path.dirname
tmp = File.new temp_path, "w"
tmp.write @content
tmp.close()
expected = File.read snap_path
out << "Expected: #{expected}"
out << "Actual: #{@content}"
out << "\n\n --- DIFF ---"
out << differ.diff_as_string(@content, expected)
out << "\n\n --- Previews : ---"
out << "Expected: \n" + snapshot_url(snap: snap_path, layout: :actions_links)
out << " \nActual: \n" + snapshot_url(snap: tmp.path, layout: :actions_links)
out.join("\n")
end
def snapshot_url snap:, layout:
"http://localhost:3000/snap/?snap=#{URI.encode(snap.to_s)}&layout=#{URI.encode(layout.to_s)}"
end
def differ
RSpec::Support::Differ.new(
:object_preparer => lambda { |object| RSpec::Matchers::Composable.surface_descriptions_in(object) },
:color => RSpec::Matchers.configuration.color?
)
end
end
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