diff options
-rw-r--r-- | lib/puppet/parser/functions/any2bool.rb | 55 | ||||
-rwxr-xr-x | spec/functions/any2bool_spec.rb | 42 |
2 files changed, 97 insertions, 0 deletions
diff --git a/lib/puppet/parser/functions/any2bool.rb b/lib/puppet/parser/functions/any2bool.rb new file mode 100644 index 0000000..f0f8f83 --- /dev/null +++ b/lib/puppet/parser/functions/any2bool.rb @@ -0,0 +1,55 @@ +# +# any2bool.rb +# + +module Puppet::Parser::Functions + newfunction(:any2bool, :type => :rvalue, :doc => <<-EOS +This converts 'anything' to a boolean. In practise it does the following: + +* Strings such as Y,y,1,T,t,TRUE,yes,'true' will return true +* Strings such as 0,F,f,N,n,FALSE,no,'false' will return false +* Booleans will just return their original value +* Number (or a string representation of a number) > 0 will return true, otherwise false +* undef will return false +* Anything else will return true + EOS + ) do |arguments| + + raise(Puppet::ParseError, "any2bool(): Wrong number of arguments " + + "given (#{arguments.size} for 1)") if arguments.size < 1 + + # If argument is already Boolean, return it + if !!arguments[0] == arguments[0] + return arguments[0] + end + + arg = arguments[0] + + if arg == nil + return false + end + + if arg == :undef + return false + end + + valid_float = !!Float(arg) rescue false + + if arg.is_a?(Numeric) + return function_num2bool( [ arguments[0] ] ) + end + + if arg.is_a?(String) + if valid_float + return function_num2bool( [ arguments[0] ] ) + else + return function_str2bool( [ arguments[0] ] ) + end + end + + return true + + end +end + +# vim: set ts=2 sw=2 et : diff --git a/spec/functions/any2bool_spec.rb b/spec/functions/any2bool_spec.rb new file mode 100755 index 0000000..9d351ce --- /dev/null +++ b/spec/functions/any2bool_spec.rb @@ -0,0 +1,42 @@ +require 'spec_helper' + +describe 'any2bool' do + it { is_expected.not_to eq(nil) } + it { is_expected.to run.with_params().and_raise_error(Puppet::ParseError, /wrong number of arguments/i) } + + it { is_expected.to run.with_params(true).and_return(true) } + it { is_expected.to run.with_params(false).and_return(false) } + + it { is_expected.to run.with_params('1.5').and_return(true) } + + describe 'when testing stringy values that mean "true"' do + [ 'TRUE','1', 't', 'y', 'true', 'yes'].each do |value| + it { is_expected.to run.with_params(value).and_return(true) } + end + end + + describe 'when testing stringy values that mean "false"' do + [ 'FALSE','', '0', 'f', 'n', 'false', 'no', 'undef', 'undefined', nil, :undef ].each do |value| + it { is_expected.to run.with_params(value).and_return(false) } + end + end + + describe 'when testing numeric values that mean "true"' do + [ 1,'1',1.5, '1.5'].each do |value| + it { is_expected.to run.with_params(value).and_return(true) } + end + end + + describe 'when testing numeric that mean "false"' do + [ -1, '-1', -1.5, '-1.5', '0', 0 ].each do |value| + it { is_expected.to run.with_params(value).and_return(false) } + end + end + + describe 'everything else returns true' do + [ [], {}, ['1'], [1], {:one => 1} ].each do |value| + it { is_expected.to run.with_params(value).and_return(true) } + end + end + +end |