1 files changed, 34 insertions, 0 deletions
diff --git a/puppet/modules/stdlib/spec/functions/pick_spec.rb b/puppet/modules/stdlib/spec/functions/pick_spec.rb
new file mode 100755
index 00000000..8be8f587
--- /dev/null
+++ b/puppet/modules/stdlib/spec/functions/pick_spec.rb
@@ -0,0 +1,34 @@
+#!/usr/bin/env ruby -S rspec
+require 'spec_helper'
+
+describe "the pick function" do
+  let(:scope) { PuppetlabsSpec::PuppetInternals.scope }
+
+  it "should exist" do
+    expect(Puppet::Parser::Functions.function("pick")).to eq("function_pick")
+  end
+
+  it 'should return the correct value' do
+    expect(scope.function_pick(['first', 'second'])).to eq('first')
+  end
+
+  it 'should return the correct value if the first value is empty' do
+    expect(scope.function_pick(['', 'second'])).to eq('second')
+  end
+
+  it 'should remove empty string values' do
+    expect(scope.function_pick(['', 'first'])).to eq('first')
+  end
+
+  it 'should remove :undef values' do
+    expect(scope.function_pick([:undef, 'first'])).to eq('first')
+  end
+
+  it 'should remove :undefined values' do
+    expect(scope.function_pick([:undefined, 'first'])).to eq('first')
+  end
+
+  it 'should error if no values are passed' do
+    expect { scope.function_pick([]) }.to( raise_error(Puppet::ParseError, "pick(): must receive at least one non empty value"))
+  end
+end