Add spec for postfix::config

manifests/config.pp

@@ -29,6 +29,11 @@
 #
 define postfix::config ($value, $ensure = present) {
 
+  validate_string($value)
+  validate_string($ensure)
+  validate_re($ensure, ['present', 'absent'],
+    "\$ensure must be either 'present' or 'absent', got '${ensure}'")
+
   Augeas {
     incl    => '/etc/postfix/main.cf',
     lens    => 'Postfix_Main.lns',

spec/defines/postfix_config_spec.rb

+require 'spec_helper'
+
+describe 'postfix::config' do
+  let (:title) { 'foo' }
+  let (:facts) { {
+    :osfamily => 'Debian',
+  } }
+
+  context 'when not passing value' do
+    it 'should fail' do
+      expect {
+        should contain_augeas("set postfix 'foo'")
+      }.to raise_error(Puppet::Error, /Must pass value to Postfix::Config/)
+    end
+  end
+
+  context 'when passing wrong type for value' do
+    let (:params) { {
+      :value => ['bar'],
+    } }
+    it 'should fail' do
+      expect {
+        should contain_augeas("set postfix 'foo'")
+      }.to raise_error(Puppet::Error, /\["bar"\] is not a string/)
+    end
+  end
+
+  context 'when passing wrong type for ensure' do
+    let (:params) { {
+      :value  => 'bar',
+      :ensure => ['present'],
+    } }
+    it 'should fail' do
+      expect {
+        should contain_augeas("set postfix 'foo'")
+      }.to raise_error(Puppet::Error, /\["present"\] is not a string/)
+    end
+  end
+
+  context 'when passing wrong value for ensure' do
+    let (:params) { {
+      :value  => 'bar',
+      :ensure => 'running',
+    } }
+    it 'should fail' do
+      expect {
+        should contain_augeas("set postfix 'foo'")
+      }.to raise_error(Puppet::Error, /must be either 'present' or 'absent'/)
+    end
+  end
+
+  context 'when ensuring presence' do
+    let (:params) { {
+      :value  => 'bar',
+      :ensure => 'present',
+    } }
+
+    it { should contain_augeas("set postfix 'foo' to 'bar'").with(
+      :incl    => '/etc/postfix/main.cf',
+      :lens    => 'Postfix_Main.lns',
+      :changes => "set foo 'bar'"
+    ) }
+  end
+
+  context 'when ensuring absence' do
+    let (:params) { {
+      :value  => 'bar',
+      :ensure => 'absent',
+    } }
+
+    it { should contain_augeas("rm postfix 'foo'").with(
+      :incl    => '/etc/postfix/main.cf',
+      :lens    => 'Postfix_Main.lns',
+      :changes => "rm foo"
+    ) }
+  end
+end