120 lines
3.3 KiB
Ruby
120 lines
3.3 KiB
Ruby
require "tempfile"
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require "tmpdir"
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require "unit/support/isolated_environment"
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shared_context "unit" do
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before(:each) do
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# State to store the list of registered plugins that we have to
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# unregister later.
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@_plugins = []
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# Create a thing to store our temporary files so that they aren't
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# unlinked right away.
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@_temp_files = []
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# Roughly simulate the embedded Bundler availability
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$vagrant_bundler_runtime = Object.new
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end
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after(:each) do
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# Unregister each of the plugins we have may have temporarily
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# registered for the duration of this test.
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@_plugins.each do |plugin|
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Vagrant.plugin("1").manager.unregister(plugin)
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Vagrant.plugin("2").manager.unregister(plugin)
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end
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end
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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 registers a Vagrant plugin for the duration of a single test.
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# This will yield a new plugin class that you can then call the
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# public plugin methods on.
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#
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# @yield [plugin] Yields the plugin class for you to call the public
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# API that you need to.
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def register_plugin(version=nil)
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version ||= Vagrant::Config::CURRENT_VERSION
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plugin = Class.new(Vagrant.plugin(version))
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plugin.name("Test Plugin #{plugin.inspect}")
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yield plugin if block_given?
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@_plugins << plugin
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plugin
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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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#
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# @return [Pathname]
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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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# Store the tempfile in an instance variable so that it is not
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# garbage collected, so that the tempfile is not unlinked.
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@_temp_files << f
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return Pathname.new(f.path)
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end
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# This creates a temporary directory and returns a {Pathname}
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# pointing to it.
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#
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# @return [Pathname]
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def temporary_dir
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# Create a temporary directory and append it to the instance
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# variabe so that it isn't garbage collected and deleted
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d = Dir.mktmpdir("vagrant")
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@_temp_files << d
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# Return the pathname
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return Pathname.new(d)
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end
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# Stub the given environment in ENV, without actually touching ENV. Keys and
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# values are converted to strings because that's how the real ENV works.
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def stub_env(hash)
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allow(ENV).to receive(:[]).and_call_original
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hash.each do |key, value|
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allow(ENV).to receive(:[])
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.with(key.to_s)
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.and_return(value.to_s)
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end
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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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