Improve specs for -C and -X

Author: chrisseaton

command_line/dash_upper_c_spec.rb

@@ -1,23 +1,6 @@
 require_relative '../spec_helper'
+require_relative 'shared/change_directory'
 
-describe 'The -C command line option' do
-  before :all do
-    @script  = fixture(__FILE__, 'dash_upper_c_script.rb')
-    @tempdir = File.dirname(@script)
-  end
-
-  it 'changes the PWD when using a file' do
-    output = ruby_exe(@script, options: "-C #{@tempdir}")
-    output.should == @tempdir
-  end
-
-  it 'does not need a space after -C for the argument' do
-    output = ruby_exe(@script, options: "-C#{@tempdir}")
-    output.should == @tempdir
-  end
-
-  it 'changes the PWD when using -e' do
-    output = ruby_exe(nil, options: "-C #{@tempdir} -e 'print Dir.pwd'")
-    output.should == @tempdir
-  end
+describe "The -C command line option" do
+  it_behaves_like :command_line_change_directory, "-C"
 end

command_line/dash_upper_x_spec.rb

@@ -0,0 +1,6 @@
+require_relative '../spec_helper'
+require_relative 'shared/change_directory'
+
+describe "The -X command line option" do
+  it_behaves_like :command_line_change_directory, "-X"
+end

command_line/fixtures/dash_upper_c_script.rb renamed to command_line/fixtures/change_directory_script.rb

@@ -0,0 +1,21 @@
+describe :command_line_change_directory, shared: true do
+  before :all do
+    @script  = fixture(__FILE__, 'change_directory_script.rb')
+    @tempdir = File.dirname(@script)
+  end
+
+  it 'changes the PWD when using a file' do
+    output = ruby_exe(@script, options: "#{@method} #{@tempdir}")
+    output.should == @tempdir
+  end
+
+  it 'does not need a space after -C for the argument' do
+    output = ruby_exe(@script, options: "#{@method}#{@tempdir}")
+    output.should == @tempdir
+  end
+
+  it 'changes the PWD when using -e' do
+    output = ruby_exe(nil, options: "#{@method} #{@tempdir} -e 'print Dir.pwd'")
+    output.should == @tempdir
+  end
+end