Merge branch 'feature/master/validation_functions'

* feature/master/validation_functions:
  Add spec test for validate_bool function
  Add validate_bool() function to stdlib

1 files changed, 39 insertions, 0 deletions

diff --git a/lib/puppet/parser/functions/validate_bool.rb b/lib/puppet/parser/functions/validate_bool.rb
new file mode 100644
index 0000000..49e6378
--- /dev/null
+++ b/lib/puppet/parser/functions/validate_bool.rb
@@ -0,0 +1,39 @@
+module Puppet::Parser::Functions
+
+  newfunction(:validate_bool, :doc => <<-'ENDHEREDOC') do |args|
+    Validate all passed values are true or false.  Abort catalog compilation if the
+    value does not pass the check.
+
+    Example:
+
+    These booleans validate
+
+        $iamtrue = true
+        validate_bool(true)
+        validate_bool(true, true, false, $iamtrue)
+
+    These strings do NOT validate and will abort catalog compilation
+
+        $some_array = [ true ]
+        validate_bool("false")
+        validate_bool("true")
+        validate_bool($some_array)
+
+    * Jeff McCune <jeff@puppetlabs.com>
+    * Dan Bode <dan@puppetlabs.com>
+
+    ENDHEREDOC
+
+    unless args.length > 0 then
+      raise Puppet::ParseError, ("validate_bool(): wrong number of arguments (#{args.length}; must be > 0)")
+    end
+
+    args.each do |arg|
+      unless (arg.is_a?(TrueClass) || arg.is_a?(FalseClass))
+        raise Puppet::ParseError, ("#{arg.inspect} is not a boolean.  It looks to be a #{arg.class}")
+      end
+    end
+
+  end
+
+end