1 files changed, 29 insertions, 0 deletions
diff --git a/spec/unit/puppet/parser/functions/delete_undef_values_spec.rb b/spec/unit/puppet/parser/functions/delete_undef_values_spec.rb
new file mode 100644
index 0000000..0536641
--- /dev/null
+++ b/spec/unit/puppet/parser/functions/delete_undef_values_spec.rb
@@ -0,0 +1,29 @@
+#! /usr/bin/env ruby -S rspec
+require 'spec_helper'
+
+describe "the delete_undef_values function" do
+  let(:scope) { PuppetlabsSpec::PuppetInternals.scope }
+
+  it "should exist" do
+    Puppet::Parser::Functions.function("delete_undef_values").should == "function_delete_undef_values"
+  end
+
+  it "should raise a ParseError if there is less than 1 argument" do
+    lambda { scope.function_delete_undef_values([]) }.should( raise_error(Puppet::ParseError))
+  end
+
+  it "should raise a ParseError if the argument is not Array nor Hash" do
+    lambda { scope.function_delete_undef_values(['']) }.should( raise_error(Puppet::ParseError))
+    lambda { scope.function_delete_undef_values([nil]) }.should( raise_error(Puppet::ParseError))
+  end
+
+  it "should delete all undef items from Array and only these" do
+    result = scope.function_delete_undef_values([['a',:undef,'c','undef']])
+    result.should(eq(['a','c','undef']))
+  end
+
+  it "should delete all undef items from Hash and only these" do
+    result = scope.function_delete_undef_values([{'a'=>'A','b'=>:undef,'c'=>'C','d'=>'undef'}])
+    result.should(eq({'a'=>'A','c'=>'C','d'=>'undef'}))
+  end
+end