Add support for OpenBSD, and also add some regression tests.

Add info about OpenBSD support to README.md and metadata.json
Add a note about OpenBSD java_version fact to README.markdown.
Fixup wording on context in one of the java patch level regression tests.
No mentioning of OpenBSD in metdata.json

Cleanup wording of context as suggested by @elyscape
update contexts as suggested by @elyscape

spec/unit/facter/java_patch_level_spec.rb

@@ -17,8 +17,8 @@ describe Facter::Util::Fact do
       end
     end
 
-    context "if java is installed" do
-      context 'returns java patch version extracted from java_version fact' do
+    context "if java is not installed" do
+      context 'returns nil' do
         before :each do
           Facter.fact(:java_version).stubs(:value).returns(nil)
         end
@@ -28,4 +28,4 @@ describe Facter::Util::Fact do
       end
     end
   end
-end
+end

spec/unit/facter/java_version_spec.rb

@@ -7,23 +7,59 @@ describe Facter::Util::Fact do
 
   describe "java_version" do
     context 'returns java version when java present' do
-      it do
-        java_version_output = <<-EOS
+      context 'on OpenBSD' do
+        before do
+          Facter.fact(:operatingsystem).stubs(:value).returns("OpenBSD")
+        end
+        let(:facts) { {:operatingsystem => 'OpenBSD'} }
+        it do
+          java_version_output = <<-EOS
+openjdk version "1.7.0_71"
+OpenJDK Runtime Environment (build 1.7.0_71-b14)
+OpenJDK 64-Bit Server VM (build 24.71-b01, mixed mode)
+          EOS
+          Facter::Util::Resolution.expects(:which).with("java").returns('/usr/local/jdk-1.7.0/jre/bin/java')
+          Facter::Util::Resolution.expects(:exec).with("java -Xmx8m -version 2>&1").returns(java_version_output)
+          Facter.value(:java_version).should == "1.7.0_71"
+        end
+      end
+      context 'on other systems' do
+        before do
+          Facter.fact(:operatingsystem).stubs(:value).returns("MyOS")
+        end
+        let(:facts) { {:operatingsystem => 'MyOS'} }
+        it do
+          java_version_output = <<-EOS
 java version "1.7.0_71"
 Java(TM) SE Runtime Environment (build 1.7.0_71-b14)
 Java HotSpot(TM) 64-Bit Server VM (build 24.71-b01, mixed mode)
-        EOS
-        Facter::Util::Resolution.expects(:which).with("java").returns(true)
-        Facter::Util::Resolution.expects(:exec).with("java -Xmx8m -version 2>&1").returns(java_version_output)
-        Facter.value(:java_version).should == "1.7.0_71"
+          EOS
+          Facter::Util::Resolution.expects(:exec).with("java -Xmx8m -version 2>&1").returns(java_version_output)
+          Facter.value(:java_version).should == "1.7.0_71"
+        end
       end
     end
 
     context 'returns nil when java not present' do
-      it do
-        Facter::Util::Resolution.stubs(:exec)
-        Facter::Util::Resolution.expects(:which).with("java").returns(false)
-        Facter.value(:java_version).should be_nil
+      context 'on OpenBSD' do
+        before do
+          Facter.fact(:operatingsystem).stubs(:value).returns("OpenBSD")
+        end
+        let(:facts) { {:operatingsystem => 'OpenBSD'} }
+        it do
+          Facter::Util::Resolution.stubs(:exec)
+          Facter.value(:java_version).should be_nil
+        end
+      end
+      context 'on other systems' do
+        before do
+          Facter.fact(:operatingsystem).stubs(:value).returns("MyOS")
+        end
+        let(:facts) { {:operatingsystem => 'MyOS'} }
+        it do
+          Facter::Util::Resolution.expects(:which).with("java").returns(false)
+          Facter.value(:java_version).should be_nil
+        end
       end
     end
   end