Make lint options customizable (#158)

* Make customizable compiler Xlint option for JRuby native extension

* [CS] restructure and fix indentation of (defaults) spec

* Add specs for lint_option

* [DOC] CHANGELOG: stub changelog entry for the next release

* [DOC] CHANGELOG: Make customizable compiler Xlint option for JRuby native extension

* Use "-Xlint" option for JRuby native extension by default.

`javac -help -X`

> -Xlint    Enable recommended warnings

1 files changed, 30 insertions, 0 deletions

diff --git a/spec/lib/rake/javaextensiontask_spec.rb b/spec/lib/rake/javaextensiontask_spec.rb
index 06ba2f5..353c40f 100644
--- a/spec/lib/rake/javaextensiontask_spec.rb
+++ b/spec/lib/rake/javaextensiontask_spec.rb
@@ -76,9 +76,14 @@ describe Rake::JavaExtensionTask do
       @ext.config_options.should be_empty
     end
 
+    it 'should have no lint option preset to delegate' do
+      @ext.lint_option.should be_falsey
+    end
+
     it 'should default to Java platform' do
       @ext.platform.should == 'java'
     end
+  end
 
   context '(tasks)' do
     before :each do
@@ -165,6 +170,31 @@ describe Rake::JavaExtensionTask do
         end
       end
     end
+
+    context 'A custom extension' do
+      let(:extension) do
+        Rake::JavaExtensionTask.new('extension_two') do |ext|
+          ext.lint_option = lint_option if lint_option
+        end
+      end
+
+      context 'without a specified lint option' do
+        let(:lint_option) { nil }
+
+        it 'should honor the lint option' do
+          (extension.lint_option).should be_falsey
+          (extension.send :java_lint_arg, extension.lint_option).should eq '-Xlint'
+        end
+      end
+
+      context "with a specified lint option of 'deprecated'" do
+        let(:lint_option) { 'deprecated'.freeze }
+
+        it 'should honor the lint option' do
+          (extension.lint_option).should eq lint_option
+          (extension.send :java_lint_arg, extension.lint_option).should eq '-Xlint:deprecated'
+        end
+      end
     end
   end
   private