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-rw-r--r--lib/puppet/parser/functions/max.rb13
-rw-r--r--lib/puppet/parser/functions/min.rb13
-rwxr-xr-xspec/unit/puppet/parser/functions/max_spec.rb23
-rwxr-xr-xspec/unit/puppet/parser/functions/min_spec.rb23
4 files changed, 72 insertions, 0 deletions
diff --git a/lib/puppet/parser/functions/max.rb b/lib/puppet/parser/functions/max.rb
new file mode 100644
index 0000000..10b6f74
--- /dev/null
+++ b/lib/puppet/parser/functions/max.rb
@@ -0,0 +1,13 @@
+module Puppet::Parser::Functions
+ newfunction(:max, :type => :rvalue, :doc => <<-EOS
+ Returns the highest value of all arguments.
+ Requires at least one argument.
+ EOS
+ ) do |args|
+
+ raise(Puppet::ParseError, "max(): Wrong number of arguments " +
+ "need at least one") if args.size == 0
+
+ return args.max
+ end
+end
diff --git a/lib/puppet/parser/functions/min.rb b/lib/puppet/parser/functions/min.rb
new file mode 100644
index 0000000..abf1b62
--- /dev/null
+++ b/lib/puppet/parser/functions/min.rb
@@ -0,0 +1,13 @@
+module Puppet::Parser::Functions
+ newfunction(:min, :type => :rvalue, :doc => <<-EOS
+ Returns the lowest value of all arguments.
+ Requires at least one argument.
+ EOS
+ ) do |args|
+
+ raise(Puppet::ParseError, "min(): Wrong number of arguments " +
+ "need at least one") if args.size == 0
+
+ return args.min
+ end
+end
diff --git a/spec/unit/puppet/parser/functions/max_spec.rb b/spec/unit/puppet/parser/functions/max_spec.rb
new file mode 100755
index 0000000..604927e
--- /dev/null
+++ b/spec/unit/puppet/parser/functions/max_spec.rb
@@ -0,0 +1,23 @@
+#! /usr/bin/env ruby -S rspec
+
+require 'spec_helper'
+
+describe "the max function" do
+ let(:scope) { PuppetlabsSpec::PuppetInternals.scope }
+
+ it "should exist" do
+ Puppet::Parser::Functions.function("max").should == "function_max"
+ end
+
+ it "should raise a ParseError if there is less than 1 arguments" do
+ lambda { scope.function_max([]) }.should( raise_error(Puppet::ParseError))
+ end
+
+ it "should be able to compare strings" do
+ scope.function_max(["albatross","dog","horse"]).should(eq("horse"))
+ end
+
+ it "should be able to compare numbers" do
+ scope.function_max([6,8,4]).should(eq(8))
+ end
+end
diff --git a/spec/unit/puppet/parser/functions/min_spec.rb b/spec/unit/puppet/parser/functions/min_spec.rb
new file mode 100755
index 0000000..781422c
--- /dev/null
+++ b/spec/unit/puppet/parser/functions/min_spec.rb
@@ -0,0 +1,23 @@
+#! /usr/bin/env ruby -S rspec
+
+require 'spec_helper'
+
+describe "the min function" do
+ let(:scope) { PuppetlabsSpec::PuppetInternals.scope }
+
+ it "should exist" do
+ Puppet::Parser::Functions.function("min").should == "function_min"
+ end
+
+ it "should raise a ParseError if there is less than 1 arguments" do
+ lambda { scope.function_min([]) }.should( raise_error(Puppet::ParseError))
+ end
+
+ it "should be able to compare strings" do
+ scope.function_min(["albatross","dog","horse"]).should(eq("albatross"))
+ end
+
+ it "should be able to compare numbers" do
+ scope.function_min([6,8,4]).should(eq(4))
+ end
+end