1 files changed, 23 insertions, 0 deletions
diff --git a/spec/functions/shell_join_spec.rb b/spec/functions/shell_join_spec.rb
new file mode 100644
index 0000000..6815f7c
--- /dev/null
+++ b/spec/functions/shell_join_spec.rb
@@ -0,0 +1,23 @@
+require 'spec_helper'
+
+describe 'shell_join' do
+  it { is_expected.not_to eq(nil) }
+
+  describe 'signature validation' do
+    it { is_expected.to run.with_params().and_raise_error(Puppet::ParseError, /wrong number of arguments/i) }
+    it { is_expected.to run.with_params(['foo'], ['bar']).and_raise_error(Puppet::ParseError, /wrong number of arguments/i) }
+    it { is_expected.to run.with_params('foo').and_raise_error(Puppet::ParseError, /is not an Array/i) }
+  end
+
+  describe 'shell argument joining' do
+    it { is_expected.to run.with_params(['foo']).and_return('foo') }
+    it { is_expected.to run.with_params(['foo', 'bar']).and_return('foo bar') }
+    it { is_expected.to run.with_params(['foo', 'bar baz']).and_return('foo bar\ baz') }
+    it { is_expected.to run.with_params(['~`!@#$', '%^&*()_+-=', '[]\{}|;\':"', ',./<>?'])
+                            .and_return('\~\`\!@\#\$ \%\^\&\*\(\)_\+-\= \[\]\\\\\{\}\|\;\\\':\" ,./\<\>\?') }
+  end
+
+  describe 'stringification' do
+    it { is_expected.to run.with_params([10, false, 'foo']).and_return('10 false foo') }
+  end
+end