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# coding: utf-8
require 'spec_helper'
require 'puppet/util/yaml'
describe Puppet::Util::Yaml do
include PuppetSpec::Files
let(:filename) { tmpfile("yaml") }
shared_examples_for 'yaml file loader' do |load_method|
it 'returns false when the file is empty' do
file_path = file_containing('input', '')
expect(load_method.call(file_path)).to eq(false)
end
it 'reads a YAML file from disk' do
file_path = file_containing('input', YAML.dump({ "my" => "data" }))
expect(load_method.call(file_path)).to eq({ "my" => "data" })
end
it 'reads YAML as UTF-8' do
file_path = file_containing('input', YAML.dump({ "my" => "𠜎" }))
expect(load_method.call(file_path)).to eq({ "my" => "𠜎" })
end
end
context "#safe_load" do
it 'raises an error if YAML is invalid' do
expect {
Puppet::Util::Yaml.safe_load('{ invalid')
}.to raise_error(Puppet::Util::Yaml::YamlLoadError, %r[\(<unknown>\): .* at line \d+ column \d+])
end
it 'raises if YAML contains classes not in the list' do
expect {
Puppet::Util::Yaml.safe_load(<<FACTS, [])
--- !ruby/object:Puppet::Node::Facts
name: localhost
FACTS
}.to raise_error(Puppet::Util::Yaml::YamlLoadError, "(<unknown>): Tried to load unspecified class: Puppet::Node::Facts")
end
it 'includes the filename if YAML contains classes not in the list' do
expect {
Puppet::Util::Yaml.safe_load(<<FACTS, [], 'foo.yaml')
--- !ruby/object:Puppet::Node::Facts
name: localhost
FACTS
}.to raise_error(Puppet::Util::Yaml::YamlLoadError, "(foo.yaml): Tried to load unspecified class: Puppet::Node::Facts")
end
it 'allows classes to be loaded' do
facts = Puppet::Util::Yaml.safe_load(<<FACTS, [Puppet::Node::Facts])
--- !ruby/object:Puppet::Node::Facts
name: localhost
values:
puppetversion: 6.0.0
FACTS
expect(facts.name).to eq('localhost')
end
it 'returns false if the content is empty' do
expect(Puppet::Util::Yaml.safe_load('')).to eq(false)
end
it 'loads true' do
expect(Puppet::Util::Yaml.safe_load('true')).to eq(true)
end
it 'loads false' do
expect(Puppet::Util::Yaml.safe_load('false')).to eq(false)
end
it 'loads nil' do
expect(Puppet::Util::Yaml.safe_load(<<~YAML)).to eq('a' => nil)
---
a: null
YAML
end
it 'loads a numeric' do
expect(Puppet::Util::Yaml.safe_load('42')).to eq(42)
end
it 'loads a string' do
expect(Puppet::Util::Yaml.safe_load('puppet')).to eq('puppet')
end
it 'loads an array' do
expect(Puppet::Util::Yaml.safe_load(<<~YAML)).to eq([1, 2])
---
- 1
- 2
YAML
end
it 'loads a hash' do
expect(Puppet::Util::Yaml.safe_load(<<~YAML)).to eq('a' => 1, 'b' => 2)
---
a: 1
b: 2
YAML
end
it 'loads an alias' do
expect(Puppet::Util::Yaml.safe_load(<<~YAML)).to eq('a' => [], 'b' => [])
---
a: &1 []
b: *1
YAML
end
end
context "#safe_load_file" do
it_should_behave_like 'yaml file loader', Puppet::Util::Yaml.method(:safe_load_file)
it 'raises an error when the file is invalid YAML' do
file_path = file_containing('input', '{ invalid')
expect {
Puppet::Util::Yaml.safe_load_file(file_path)
}.to raise_error(Puppet::Util::Yaml::YamlLoadError, %r[\(#{file_path}\): .* at line \d+ column \d+])
end
it 'raises an error when the filename is illegal' do
expect {
Puppet::Util::Yaml.safe_load_file("not\0allowed")
}.to raise_error(ArgumentError, /pathname contains null byte/)
end
it 'raises an error when the file does not exist' do
expect {
Puppet::Util::Yaml.safe_load_file('does/not/exist.yaml')
}.to raise_error(Errno::ENOENT, /No such file or directory/)
end
end
context "#safe_load_file_if_valid" do
before do
Puppet[:log_level] = 'debug'
end
it_should_behave_like 'yaml file loader', Puppet::Util::Yaml.method(:safe_load_file_if_valid)
it 'returns nil when the file is invalid YAML and debug logs about it' do
file_path = file_containing('input', '{ invalid')
expect(Puppet).to receive(:debug)
.with(/Could not retrieve YAML content .+ expected ',' or '}'/).and_call_original
expect(Puppet::Util::Yaml.safe_load_file_if_valid(file_path)).to eql(nil)
end
it 'returns nil when the filename is illegal and debug logs about it' do
expect(Puppet).to receive(:debug)
.with(/Could not retrieve YAML content .+: pathname contains null byte/).and_call_original
expect(Puppet::Util::Yaml.safe_load_file_if_valid("not\0allowed")).to eql(nil)
end
it 'returns nil when the file does not exist and debug logs about it' do
expect(Puppet).to receive(:debug)
.with(/Could not retrieve YAML content .+: No such file or directory/).and_call_original
expect(Puppet::Util::Yaml.safe_load_file_if_valid('does/not/exist.yaml')).to eql(nil)
end
end
end
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