(maint) Update ensure_package specs to confirm expected behavior

The previous behavior of the tests checked the behavior of the
underlying functions library when called with no arguments; this commit
updates the tests to conform to the functions API and test what happens
when a function is called with no args.

1 files changed, 6 insertions, 3 deletions

diff --git a/spec/functions/ensure_packages_spec.rb b/spec/functions/ensure_packages_spec.rb
index f6272af..a13c282 100644
--- a/spec/functions/ensure_packages_spec.rb
+++ b/spec/functions/ensure_packages_spec.rb
@@ -8,10 +8,13 @@ describe 'ensure_packages' do
 
   describe 'argument handling' do
     it 'fails with no arguments' do
-      should run.with_params().and_raise_error(Puppet::ParseError)
+      expect {
+        scope.function_ensure_packages([])
+      }.to raise_error(Puppet::ParseError, /0 for 1/)
     end
-    it 'requires an array' do
-      lambda { scope.function_ensure_packages([['foo']]) }.should_not raise_error
+
+    it 'accepts an array of values' do
+      scope.function_ensure_packages([['foo']])
     end
 
     it 'accepts a single package name as a string' do