(MODULES-1570) TDD Style - Add specs first

Facter unit tests to check resolution of Java version

spec/unit/facter/java_patch_level_spec.rb

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+require "spec_helper"
+
+describe Facter::Util::Fact do
+  before {
+    Facter.clear
+  }
+
+  describe "java_patch_level" do
+    context "if java is installed" do
+      context 'returns java patch version extracted from java_version fact' do
+        before :each do
+          Facter.fact(:java_version).stubs(:value).returns('1.7.0_71')
+        end
+        it do
+          Facter.fact(:java_patch_level).value.should == "71"
+        end
+      end
+    end
+
+    context "if java is installed" do
+      context 'returns java patch version extracted from java_version fact' do
+        before :each do
+          Facter.fact(:java_version).stubs(:value).returns(nil)
+        end
+        it do
+          Facter.fact(:java_patch_level).value.should == "JAVA_NOT_INSTALLED"
+        end
+      end
+    end
+  end
+end

spec/unit/facter/java_version_spec.rb

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+require "spec_helper"
+
+describe Facter::Util::Fact do
+  before {
+    Facter.clear
+  }
+
+  describe "java_version" do
+    context 'returns java version when java present' do
+      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(:exec).with("java -version 2>&1").returns(java_version_output)
+        Facter.fact(:java_version).value.should == "1.7.0_71"
+      end
+    end
+
+    context 'returns nil when java not present' do
+      it do
+        java_version_output = "bash: java: command not found"
+        Facter::Util::Resolution.expects(:exec).with("java -version 2>&1").returns(java_version_output)
+        Facter.fact(:java_version).value.should be_nil
+      end
+    end
+  end
+end