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module InEnvironment
private
# Create an environment for a test. At the completion of the yielded
# block, the environment is restored to its original conditions.
def in_environment(settings)
original_settings = set_env(settings)
yield
ensure
set_env(original_settings) if original_settings
end
# Set the environment according to the settings hash.
def set_env(settings) # :nodoc:
result = {}
settings.each do |k, v|
result[k] = ENV[k]
if k == 'PWD'
result[k] = Dir.pwd
Dir.chdir(v)
elsif v.nil?
ENV.delete(k)
else
ENV[k] = v
end
end
result
end
end
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