Adapt Thread::Backtrace::Location specs

Author: eregon

spec/truffle/thread/backtrace/location/absolute_path_spec.rb

@@ -10,17 +10,20 @@
 
 describe 'Thread::Backtrace::Location#absolute_path' do
 
-  it 'should be the same absolute path as in the formatted description for core methods' do
+  it 'returns an existing and canonical path for core methods' do
     # Get the caller_locations from a call made into a core method.
     locations = [:non_empty].map { caller_locations }.flatten
 
     locations.each do |location|
-      filename, _line_number, _in_method = location.to_s.split(':')
       path = location.absolute_path
+      path.should_not.include?('(core)')
 
-      path.should_not == '(core)'
-      path.start_with?('resource:/').should be_false
-      location.absolute_path.should == File.expand_path(filename)
+      if path.include?('resource:')
+        skip
+      else
+        File.should.exist?(location.absolute_path)
+        File.realpath(location.absolute_path).should == location.absolute_path
+      end
     end
   end
 

spec/truffle/thread/backtrace/location/lineno_spec.rb

@@ -15,8 +15,8 @@
     locations = [:non_empty].map { caller_locations }.flatten
 
     locations.each do |location|
-      _filename, line_number, _in_method = location.to_s.split(':')
-      location.lineno.should == line_number.to_i
+      line_number = location.to_s[/:(\d+):/, 1]
+      location.lineno.should == Integer(line_number)
     end
   end
 

spec/truffle/thread/backtrace/location/path_spec.rb

@@ -15,12 +15,13 @@
     locations = [:non_empty].map { caller_locations }.flatten
 
     locations.each do |location|
-      filename, _line_number, _in_method = location.to_s.split(':')
+      filename = location.to_s[/^(.+):\d+:/, 1]
       path = location.path
+      path.should_not.include?('(core)')
+      path.should_not.include?('resource:')
 
-      path.should_not == '(core)'
-      path.start_with?('resource:/').should be_false
-      File.basename(path).should == File.basename(filename)
+      # #path is consistent with #to_s output, like on MRI
+      path.should == filename
     end
   end