Add some validation and more tests

spec/classes/java_spec.rb

@@ -112,4 +112,43 @@ describe 'java', :type => :class do
     it { should contain_package('java').with_name('java-1_7_0-openjdk-devel')}
   end
 
+  describe 'incompatible OSs' do
+    [
+      {
+        # C14706
+        :osfamily               => 'windows',
+        :operatingsystem        => 'windows',
+        :operatingsystemrelease => '8.1',
+      },
+      {
+        # C14707
+        :osfamily               => 'Darwin',
+        :operatingsystem        => 'Darwin',
+        :operatingsystemrelease => '13.3.0',
+      },
+      {
+        # C14708
+        :osfamily               => 'AIX',
+        :operatingsystem        => 'AIX',
+        :operatingsystemrelease => '7100-02-00-000',
+      },
+      {
+        # C14708
+        :osfamily               => 'AIX',
+        :operatingsystem        => 'AIX',
+        :operatingsystemrelease => '6100-07-04-1216',
+      },
+      {
+        # C14708
+        :osfamily               => 'AIX',
+        :operatingsystem        => 'AIX',
+        :operatingsystemrelease => '5300-12-01-1016',
+      },
+    ].each do |facts|
+      let(:facts) { facts }
+      it "should fail on #{facts[:operatingsystem]} #{facts[:operatingsystemrelease]}" do
+        expect { subject }.to raise_error Puppet::Error, /unsupported platform/
+      end
+    end
+  end
 end