50 lines
1.2 KiB
Ruby
50 lines
1.2 KiB
Ruby
require "tempfile"
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require "unit/support/isolated_environment"
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shared_context "unit" do
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# This creates an isolated environment so that Vagrant doesn't
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# muck around with your real system during unit tests.
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#
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# The returned isolated environment has a variety of helper
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# methods on it to easily create files, Vagrantfiles, boxes,
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# etc.
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def isolated_environment
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env = Unit::IsolatedEnvironment.new
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yield env if block_given?
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env
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end
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# This helper creates a temporary file and returns a Pathname
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# object pointed to it.
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def temporary_file(contents=nil)
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f = Tempfile.new("vagrant-unit")
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if contents
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f.write(contents)
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f.flush
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end
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return Pathname.new(f.path)
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end
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# This helper provides temporary environmental variable changes.
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def with_temp_env(environment)
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# Build up the new environment, preserving the old values so we
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# can replace them back in later.
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old_env = {}
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environment.each do |key, value|
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old_env[key] = ENV[key]
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ENV[key] = value
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end
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# Call the block, returning its return value
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return yield
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ensure
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# Reset the environment no matter what
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old_env.each do |key, value|
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ENV[key] = value
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end
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end
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end
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