1 files changed, 21 insertions, 0 deletions
diff --git a/spec/functions/keys_spec.rb b/spec/functions/keys_spec.rb
new file mode 100755
index 0000000..f2e7d42
--- /dev/null
+++ b/spec/functions/keys_spec.rb
@@ -0,0 +1,21 @@
+#! /usr/bin/env ruby -S rspec
+require 'spec_helper'
+
+describe "the keys function" do
+  let(:scope) { PuppetlabsSpec::PuppetInternals.scope }
+
+  it "should exist" do
+    expect(Puppet::Parser::Functions.function("keys")).to eq("function_keys")
+  end
+
+  it "should raise a ParseError if there is less than 1 arguments" do
+    expect { scope.function_keys([]) }.to( raise_error(Puppet::ParseError))
+  end
+
+  it "should return an array of keys when given a hash" do
+    result = scope.function_keys([{'a'=>1, 'b'=>2}])
+    # =~ performs 'array with same elements' (set) matching
+    # For more info see RSpec::Matchers::MatchArray
+    expect(result).to match_array(['a','b'])
+  end
+end