Add in-tree mspec and ruby/spec

* For easier modifications of ruby/spec by MRI developers.
* .gitignore: track changes under spec.
* spec/mspec, spec/rubyspec: add in-tree mspec and ruby/spec.
  These files can therefore be updated like any other file in MRI.
  Instructions are provided in spec/README.
  [Feature #13156] [ruby-core:79246]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@58595 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 91 insertions, 0 deletions

diff --git a/spec/rubyspec/core/thread/backtrace/location/path_spec.rb b/spec/rubyspec/core/thread/backtrace/location/path_spec.rb
new file mode 100644
index 0000000000..c2f2058990
--- /dev/null
+++ b/spec/rubyspec/core/thread/backtrace/location/path_spec.rb
@@ -0,0 +1,91 @@
+require File.expand_path('../../../../../spec_helper', __FILE__)
+require File.expand_path('../fixtures/classes', __FILE__)
+
+describe 'Thread::Backtrace::Location#path' do
+  context 'outside a main script' do
+    it 'returns an absolute path' do
+      frame = ThreadBacktraceLocationSpecs.locations[0]
+
+      frame.path.should == __FILE__
+    end
+  end
+
+  context 'in a main script' do
+    before do
+      @script = fixture(__FILE__, 'main.rb')
+    end
+
+    context 'when the script is in the working directory' do
+      before do
+        @directory = File.dirname(@script)
+      end
+
+      context 'when using a relative script path' do
+        it 'returns a path relative to the working directory' do
+          Dir.chdir(@directory) {
+            ruby_exe('main.rb')
+          }.should == 'main.rb'
+        end
+      end
+
+      context 'when using an absolute script path' do
+        it 'returns an absolute path' do
+          Dir.chdir(@directory) {
+            ruby_exe(@script)
+          }.should == @script
+        end
+      end
+    end
+
+    context 'when the script is in a sub directory of the working directory' do
+      context 'when using a relative script path' do
+        it 'returns a path relative to the working directory' do
+          path      = 'fixtures/main.rb'
+          directory = File.dirname(__FILE__)
+          Dir.chdir(directory) {
+            ruby_exe(path)
+          }.should == path
+        end
+      end
+
+      context 'when using an absolute script path' do
+        it 'returns an absolute path' do
+          ruby_exe(@script).should == @script
+        end
+      end
+    end
+
+    context 'when the script is outside of the working directory' do
+      before do
+        @parent_dir = tmp('path_outside_pwd')
+        @sub_dir    = File.join(@parent_dir, 'sub')
+        @script     = File.join(@parent_dir, 'main.rb')
+        source      = fixture(__FILE__, 'main.rb')
+
+        mkdir_p(@sub_dir)
+
+        cp(source, @script)
+      end
+
+      after do
+        rm_r(@script)
+        rm_r(@sub_dir)
+        rm_r(@parent_dir)
+      end
+
+      context 'when using a relative script path' do
+        it 'returns a path relative to the working directory' do
+          Dir.chdir(@sub_dir) {
+            ruby_exe('../main.rb')
+          }.should == '../main.rb'
+        end
+      end
+
+      context 'when using an absolute path' do
+        it 'returns an absolute path' do
+          ruby_exe(@script).should == @script
+        end
+      end
+    end
+  end
+end