Add Kernel.spawn's chdir option to .run by passing all spawn options.

lib/linux_admin/common.rb

@@ -19,7 +19,9 @@ def run(cmd, options = {})
       params = options[:params] || options[:parameters]
 
       begin
-        out = launch(build_cmd(cmd, params))
+        launch_params = {}
+        launch_params[:chdir] = options[:chdir] if options[:chdir]
+        out = launch(build_cmd(cmd, params), launch_params)
 
         if options[:return_output] && exitstatus == 0
           out
@@ -67,9 +69,9 @@ def build_cmd(cmd, params = nil)
     # http://stackoverflow.com/questions/13829830/ruby-process-spawn-stdout-pipe-buffer-size-limit/13846146#13846146
     THREAD_SYNC_KEY = "LinuxAdmin-exitstatus"
 
-    def launch(cmd)
+    def launch(cmd, spawn_options = {})
       pipe_r, pipe_w = IO.pipe
-      pid = Kernel.spawn(cmd, :err => [:child, :out], :out => pipe_w)
+      pid = Kernel.spawn(cmd, {:err => [:child, :out], :out => pipe_w}.merge(spawn_options))
       wait_for_process(pid, pipe_w)
       wait_for_output(pipe_r)
     end

spec/common_spec.rb

@@ -45,17 +45,17 @@ class TestClass
   context ".run" do
     context "with params" do
       it "sanitizes crazy params" do
-        subject.should_receive(:launch).once.with("true --user bob --pass P@\\$sw0\\^\\&\\ \\|\\<\\>/-\\+\\*d\\% --db --desc=Some\\ Description pkg1 some\\ pkg --pool 123 --pool 456")
+        subject.should_receive(:launch).once.with("true --user bob --pass P@\\$sw0\\^\\&\\ \\|\\<\\>/-\\+\\*d\\% --db --desc=Some\\ Description pkg1 some\\ pkg --pool 123 --pool 456", {})
         subject.run("true", :params => modified_params, :return_exitstatus => true)
       end
 
       it "as empty hash" do
-        subject.should_receive(:launch).once.with("true")
+        subject.should_receive(:launch).once.with("true", {})
         subject.run("true", :params => {}, :return_exitstatus => true)
       end
 
       it "as nil" do
-        subject.should_receive(:launch).once.with("true")
+        subject.should_receive(:launch).once.with("true", {})
         subject.run("true", :params => nil, :return_exitstatus => true)
       end
 
@@ -105,5 +105,10 @@ class TestClass
         expect { subject.run("XXXXX", :return_output => true) }.to raise_error
       end
     end
+
+    it "supports spawn's chdir option" do
+      subject.should_receive(:launch).once.with("true", {:chdir => ".."})
+      subject.run("true", :chdir => "..", :return_exitstatus => true)
+    end
   end
 end