Add a count function

Similar to the ruby count method on arrays.

1 files changed, 27 insertions, 0 deletions

diff --git a/spec/unit/puppet/parser/functions/count_spec.rb b/spec/unit/puppet/parser/functions/count_spec.rb
new file mode 100644
index 0000000..5e4a8b9
--- /dev/null
+++ b/spec/unit/puppet/parser/functions/count_spec.rb
@@ -0,0 +1,27 @@
+#! /usr/bin/env ruby -S rspec
+
+require 'spec_helper'
+
+describe "the count function" do
+  let(:scope) { PuppetlabsSpec::PuppetInternals.scope }
+
+  it "should exist" do
+    Puppet::Parser::Functions.function("count").should == "function_count"
+  end
+
+  it "should raise a ArgumentError if there is more than 2 arguments" do
+    lambda { scope.function_count(['foo', 'bar', 'baz']) }.should( raise_error(ArgumentError))
+  end
+
+  it "should be able to count arrays" do
+    scope.function_count([["1","2","3"]]).should(eq(3))
+  end
+
+  it "should be able to count matching elements in arrays" do
+    scope.function_count([["1", "2", "2"], "2"]).should(eq(2))
+  end
+
+  it "should not count :undef, nil or empty strings" do
+    scope.function_count([["foo","bar",:undef,nil,""]]).should(eq(2))
+  end
+end