Add clamp function

Clamp keeps value within the range.
Employ of soft() makes the whole thing is independant of order.

2 files changed, 56 insertions, 0 deletions

diff --git a/spec/acceptance/clamp_spec.rb b/spec/acceptance/clamp_spec.rb
new file mode 100755
index 0000000..0189258
--- /dev/null
+++ b/spec/acceptance/clamp_spec.rb
@@ -0,0 +1,40 @@
+#! /usr/bin/env ruby -S rspec
+require 'spec_helper_acceptance'
+
+describe 'clamp function', :unless => UNSUPPORTED_PLATFORMS.include?(fact('operatingsystem')) do
+  describe 'success' do
+    it 'clamps list of values' do
+      pp = <<-EOS
+      $x = 17
+      $y = 225
+      $z = 155
+      $o = clamp($x, $y, $z)
+      if $o == $z {
+        notify { 'output correct': }
+      }
+      EOS
+
+      apply_manifest(pp, :catch_failures => true) do |r|
+        expect(r.stdout).to match(/Notice: output correct/)
+      end
+    end
+    it 'clamps array of values' do
+      pp = <<-EOS
+      $a = [7, 19, 66]
+      $b = 19
+      $o = clamp($a)
+      if $o == $b {
+        notify { 'output correct': }
+      }
+      EOS
+
+      apply_manifest(pp, :catch_failures => true) do |r|
+        expect(r.stdout).to match(/Notice: output correct/)
+      end
+    end
+  end
+  describe 'failure' do
+    it 'handles improper argument counts'
+    it 'handles no arguments'
+  end
+end
diff --git a/spec/functions/clamp_spec.rb b/spec/functions/clamp_spec.rb
new file mode 100644
index 0000000..3e2fe7a
--- /dev/null
+++ b/spec/functions/clamp_spec.rb
@@ -0,0 +1,16 @@
+require 'spec_helper'
+
+describe 'clamp' do
+  it { is_expected.not_to eq(nil) }
+  it { is_expected.to run.with_params().and_raise_error(ArgumentError) }
+  it { is_expected.to run.with_params([]).and_raise_error(Puppet::ParseError) }
+  it { is_expected.to run.with_params(12, 88, 71, 190).and_raise_error(Puppet::ParseError, /Wrong number of arguments, need three to clamp/) }
+  it { is_expected.to run.with_params('12string', 88, 15).and_raise_error(Puppet::ParseError, /Required explicit numeric/) }
+  it { is_expected.to run.with_params(1, 2, {'a' => 55}).and_raise_error(Puppet::ParseError, /The Hash type is not allowed/) }
+  it { is_expected.to run.with_params('24', [575, 187]).and_return(187) }
+  it { is_expected.to run.with_params([4, 3, '99']).and_return(4) }
+  it { is_expected.to run.with_params(16, 750, 88).and_return(88) }
+  it { is_expected.to run.with_params([3, 873], 73).and_return(73) }
+  it { is_expected.to run.with_params([4], 8, 75).and_return(8) }
+  it { is_expected.to run.with_params([6], [31], 9911).and_return(31) }
+end