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#
# Author:: Jay Mundrawala (<jdm@getchef.com>)
#
# Copyright:: Copyright (c) 2014 Chef Software, Inc.
# License:: Apache License, Version 2.0
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#
require 'chef'
require 'chef/util/dsc/resource_info'
require 'spec_helper'
describe Chef::Provider::DscScript do
context 'when DSC is available' do
let (:node) {
node = Chef::Node.new
node.automatic[:languages][:powershell][:version] = '4.0'
node
}
let (:events) { Chef::EventDispatch::Dispatcher.new }
let (:run_context) { Chef::RunContext.new(node, {}, events) }
let (:resource) { Chef::Resource::DscScript.new("script", run_context) }
let (:provider) do
Chef::Provider::DscScript.new(resource, run_context)
end
describe '#load_current_resource' do
it "describes the resource as converged if there were 0 DSC resources" do
allow(provider).to receive(:run_configuration).with(:test).and_return([])
provider.load_current_resource
expect(provider.instance_variable_get('@resource_converged')).to be_truthy
end
it "describes the resource as not converged if there is 1 DSC resources that is converged" do
dsc_resource_info = Chef::Util::DSC::ResourceInfo.new('resource', false, ['nothing will change something'])
allow(provider).to receive(:run_configuration).with(:test).and_return([dsc_resource_info])
provider.load_current_resource
expect(provider.instance_variable_get('@resource_converged')).to be_truthy
end
it "describes the resource as not converged if there is 1 DSC resources that is not converged" do
dsc_resource_info = Chef::Util::DSC::ResourceInfo.new('resource', true, ['will change something'])
allow(provider).to receive(:run_configuration).with(:test).and_return([dsc_resource_info])
provider.load_current_resource
expect(provider.instance_variable_get('@resource_converged')).to be_falsey
end
it "describes the resource as not converged if there are any DSC resources that are not converged" do
dsc_resource_info1 = Chef::Util::DSC::ResourceInfo.new('resource', true, ['will change something'])
dsc_resource_info2 = Chef::Util::DSC::ResourceInfo.new('resource', false, ['nothing will change something'])
allow(provider).to receive(:run_configuration).with(:test).and_return([dsc_resource_info1, dsc_resource_info2])
provider.load_current_resource
expect(provider.instance_variable_get('@resource_converged')).to be_falsey
end
it "describes the resource as converged if all DSC resources that are converged" do
dsc_resource_info1 = Chef::Util::DSC::ResourceInfo.new('resource', false, ['nothing will change something'])
dsc_resource_info2 = Chef::Util::DSC::ResourceInfo.new('resource', false, ['nothing will change something'])
allow(provider).to receive(:run_configuration).with(:test).and_return([dsc_resource_info1, dsc_resource_info2])
provider.load_current_resource
expect(provider.instance_variable_get('@resource_converged')).to be_truthy
end
end
describe '#generate_configuration_document' do
# I think integration tests should cover these cases
it 'uses configuration_document_from_script_path when a dsc script file is given' do
allow(provider).to receive(:load_current_resource)
resource.command("path_to_script")
generator = double('Chef::Util::DSC::ConfigurationGenerator')
expect(generator).to receive(:configuration_document_from_script_path)
allow(Chef::Util::DSC::ConfigurationGenerator).to receive(:new).and_return(generator)
provider.send(:generate_configuration_document, 'tmp', nil)
end
it 'uses configuration_document_from_script_code when a the dsc resource is given' do
allow(provider).to receive(:load_current_resource)
resource.code("ImADSCResource{}")
generator = double('Chef::Util::DSC::ConfigurationGenerator')
expect(generator).to receive(:configuration_document_from_script_code)
allow(Chef::Util::DSC::ConfigurationGenerator).to receive(:new).and_return(generator)
provider.send(:generate_configuration_document, 'tmp', nil)
end
it 'should noop if neither code or command are provided' do
allow(provider).to receive(:load_current_resource)
generator = double('Chef::Util::DSC::ConfigurationGenerator')
expect(generator).to receive(:configuration_document_from_script_code).with('', anything(), anything(), anything())
allow(Chef::Util::DSC::ConfigurationGenerator).to receive(:new).and_return(generator)
provider.send(:generate_configuration_document, 'tmp', nil)
end
end
describe 'action_run' do
it 'should converge the script if it is not converged' do
dsc_resource_info = Chef::Util::DSC::ResourceInfo.new('resource', true, ['will change something'])
allow(provider).to receive(:run_configuration).with(:test).and_return([dsc_resource_info])
allow(provider).to receive(:run_configuration).with(:set)
provider.run_action(:run)
expect(resource).to be_updated
end
it 'should not converge if the script is already converged' do
allow(provider).to receive(:run_configuration).with(:test).and_return([])
provider.run_action(:run)
expect(resource).not_to be_updated
end
end
describe '#generate_description' do
it 'removes the resource name from the beginning of any log line from the LCM' do
dsc_resource_info = Chef::Util::DSC::ResourceInfo.new('resourcename', true, ['resourcename doing something', 'lastline'])
provider.instance_variable_set('@dsc_resources_info', [dsc_resource_info])
expect(provider.send(:generate_description)[1]).to match(/converge DSC resource resourcename by doing something/)
end
it 'ignores the last line' do
dsc_resource_info = Chef::Util::DSC::ResourceInfo.new('resourcename', true, ['resourcename doing something', 'lastline'])
provider.instance_variable_set('@dsc_resources_info', [dsc_resource_info])
expect(provider.send(:generate_description)[1]).not_to match(/lastline/)
end
it 'reports a dsc resource has not been changed if the LCM reported no change was required' do
dsc_resource_info = Chef::Util::DSC::ResourceInfo.new('resourcename', false, ['resourcename does nothing', 'lastline'])
provider.instance_variable_set('@dsc_resources_info', [dsc_resource_info])
expect(provider.send(:generate_description)[1]).to match(/converge DSC resource resourcename by doing nothing/)
end
end
end
context 'when Dsc is not available' do
let (:node) { Chef::Node.new }
let (:events) { Chef::EventDispatch::Dispatcher.new }
let (:run_context) { Chef::RunContext.new(node, {}, events) }
let (:resource) { Chef::Resource::DscScript.new('script', run_context) }
let (:provider) { Chef::Provider::DscScript.new(resource, run_context) }
describe 'action_run' do
['1.0', '2.0', '3.0'].each do |version|
it "raises an exception for powershell version '#{version}'" do
node.automatic[:languages][:powershell][:version] = version
expect {
provider.run_action(:run)
}.to raise_error(Chef::Exceptions::ProviderNotFound)
end
end
it 'raises an exception if Powershell is not present' do
expect {
provider.run_action(:run)
}.to raise_error(Chef::Exceptions::ProviderNotFound)
end
end
end
end
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