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-rw-r--r--lib/puppet/parser/functions/validate_slength.rb31
-rwxr-xr-xspec/unit/puppet/parser/functions/validate_slength_spec.rb14
2 files changed, 36 insertions, 9 deletions
diff --git a/lib/puppet/parser/functions/validate_slength.rb b/lib/puppet/parser/functions/validate_slength.rb
index fdcc0a2..e0ba43b 100644
--- a/lib/puppet/parser/functions/validate_slength.rb
+++ b/lib/puppet/parser/functions/validate_slength.rb
@@ -2,23 +2,26 @@ module Puppet::Parser::Functions
newfunction(:validate_slength, :doc => <<-'ENDHEREDOC') do |args|
Validate that the first argument is a string (or an array of strings), and
- less/equal to than the length of the second argument. It fails if the first
- argument is not a string or array of strings, and if arg 2 is not convertable
- to a number.
+ less/equal to than the length of the second argument. An optional third
+ parameter can be given a the minimum length. It fails if the first
+ argument is not a string or array of strings, and if arg 2 and arg 3 are
+ not convertable to a number.
The following values will pass:
validate_slength("discombobulate",17)
validate_slength(["discombobulate","moo"],17)
+ validate_slength(["discombobulate","moo"],17,3)
The following valueis will not:
validate_slength("discombobulate",1)
validate_slength(["discombobulate","thermometer"],5)
+ validate_slength(["discombobulate","moo"],17,10)
ENDHEREDOC
- raise Puppet::ParseError, ("validate_slength(): Wrong number of arguments (#{args.length}; must be = 2)") unless args.length == 2
+ raise Puppet::ParseError, ("validate_slength(): Wrong number of arguments (#{args.length}; must be 2 or 3)") unless args.length == 2 or args.length == 3
unless (args[0].is_a?(String) or args[0].is_a?(Array))
raise Puppet::ParseError, ("validate_slength(): please pass a string, or an array of strings - what you passed didn't work for me at all - #{args[0].class}")
@@ -27,19 +30,31 @@ module Puppet::Parser::Functions
begin
max_length = args[1].to_i
rescue NoMethodError => e
- raise Puppet::ParseError, ("validate_slength(): Couldn't convert whatever you passed as the length parameter to an integer - sorry: " + e.message )
+ raise Puppet::ParseError, ("validate_slength(): Couldn't convert whatever you passed as the max length parameter to an integer - sorry: " + e.message )
+ end
+
+ unless args.length == 2
+ begin
+ min_length = Integer(args[2])
+ rescue StandardError => e
+ raise Puppet::ParseError, ("validate_slength(): Couldn't convert whatever you passed as the min length parameter to an integer - sorry: " + e.message )
+ end
+ else
+ min_length = 0
end
raise Puppet::ParseError, ("validate_slength(): please pass a positive number as max_length") unless max_length > 0
+ raise Puppet::ParseError, ("validate_slength(): please pass a positive number as min_length") unless min_length >= 0
+ raise Puppet::ParseError, ("validate_slength(): please pass a min length that is smaller than the maximum") unless min_length <= max_length
case args[0]
when String
- raise Puppet::ParseError, ("validate_slength(): #{args[0].inspect} is #{args[0].length} characters. It should have been less than or equal to #{max_length} characters") unless args[0].length <= max_length
+ raise Puppet::ParseError, ("validate_slength(): #{args[0].inspect} is #{args[0].length} characters. It should have been between #{min_length} and #{max_length} characters") unless args[0].length <= max_length and min_length <= arg.length
when Array
args[0].each do |arg|
if arg.is_a?(String)
- unless ( arg.is_a?(String) and arg.length <= max_length )
- raise Puppet::ParseError, ("validate_slength(): #{arg.inspect} is #{arg.length} characters. It should have been less than or equal to #{max_length} characters")
+ unless ( arg.is_a?(String) and arg.length <= max_length and min_length <= arg.length)
+ raise Puppet::ParseError, ("validate_slength(): #{arg.inspect} is #{arg.length} characters. It should have been between #{min_length} and #{max_length} characters")
end
else
raise Puppet::ParseError, ("validate_slength(): #{arg.inspect} is not a string, it's a #{arg.class}")
diff --git a/spec/unit/puppet/parser/functions/validate_slength_spec.rb b/spec/unit/puppet/parser/functions/validate_slength_spec.rb
index b363e7a..6ed1b0f 100755
--- a/spec/unit/puppet/parser/functions/validate_slength_spec.rb
+++ b/spec/unit/puppet/parser/functions/validate_slength_spec.rb
@@ -26,8 +26,20 @@ describe "the validate_slength function" do
expect { scope.function_validate_slength(["moo","0"]) }.to(raise_error(Puppet::ParseError, /please pass a positive number as max_length/))
end
+ it "should raise a ParseError if argument 3 doesn't convert to a fixnum" do
+ expect { scope.function_validate_slength(["moo",2,["3"]]) }.to(raise_error(Puppet::ParseError, /Couldn't convert whatever you passed/))
+ end
+
+ it "should raise a ParseError if argument 3 converted, but to 0, e.g. a string" do
+ expect { scope.function_validate_slength(["moo",2,"monkey"]) }.to(raise_error(Puppet::ParseError, /Couldn't convert whatever you passed/))
+ end
+
it "should fail if string greater then size" do
- expect { scope.function_validate_slength(["test", 2]) }.to(raise_error(Puppet::ParseError, /It should have been less than or equal to/))
+ expect { scope.function_validate_slength(["test", 2]) }.to(raise_error(Puppet::ParseError, /It should have been between 0 and 2/))
+ end
+
+ it "should fail if the min length is larger than the max length" do
+ expect { scope.function_validate_slength(["test", 10, 15]) }.to(raise_error(Puppet::ParseError, /pass a min length that is smaller than the max/))
end
it "should fail if you pass an array of something other than strings" do