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Feature: Formatter API methods
Some utility methods are provided to make it easier to write your own formatters.
Here are some examples.
Scenario: A formatter that uses `Cucumber::Formatter::Io#ensure_file`
The ensure_file method is a little helper function that some formatters use,
normally when given a CLI argument with `--out` to check that the file passed
by the user actually exists.
The second argument is the name of the formatter, used to print a useful
error message if the file can't be created for some reason.
Given a file named "features/f.feature" with:
"""
Feature: Test
Scenario: Test
"""
And a directory named "my/special"
And a file named "features/support/custom_formatter.rb" with:
"""
require 'cucumber/formatter/io'
module Cucumber
module Formatter
class Test
include Io
def initialize(runtime, path_or_io, options)
ensure_file("my/special/output.file", "custom formatter")
end
end
end
end
"""
When I run `cucumber features/f.feature --format Cucumber::Formatter::Test`
Then it should pass
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