Update to ruby/mspec@bd47c2a

spec/mspec/bin/mspec

@@ -4,4 +4,4 @@ $:.unshift File.expand_path('../../lib', __FILE__)
 
 require 'mspec/commands/mspec'
 
-MSpecMain.main
+MSpecMain.main(false)

spec/mspec/lib/mspec/commands/mspec.rb

@@ -25,6 +25,7 @@ class MSpecMain < MSpecScript
     config[:command] = argv.shift if ["ci", "run", "tag"].include?(argv[0])
 
     options = MSpecOptions.new "mspec [COMMAND] [options] (FILE|DIRECTORY|GLOB)+", 30, config
+    @options = options
 
     options.doc " The mspec command sets up and invokes the sub-commands"
     options.doc " (see below) to enable, for instance, running the specs"
@@ -110,8 +111,9 @@ class MSpecMain < MSpecScript
     if config[:multi]
       exit multi_exec(argv)
     else
-      $stderr.puts "$ #{argv.join(' ')}"
-      $stderr.flush
+      log = config[:options].include?('--error-output') ? $stdout : $stderr
+      log.puts "$ #{argv.join(' ')}"
+      log.flush
       exec(*argv, close_others: false)
     end
   end

spec/mspec/lib/mspec/matchers/raise_error.rb

@@ -1,4 +1,6 @@
 class RaiseErrorMatcher
+  FAILURE_MESSAGE_FOR_EXCEPTION = {}.compare_by_identity
+
   attr_writer :block
 
   def initialize(exception, message, &block)
@@ -15,7 +17,7 @@ class RaiseErrorMatcher
   def matches?(proc)
     @result = proc.call
     return false
-  rescue Exception => actual
+  rescue Object => actual
     @actual = actual
 
     if matching_exception?(actual)
@@ -23,7 +25,7 @@ class RaiseErrorMatcher
       @block[actual] if @block
       return true
     else
-      actual.instance_variable_set(:@mspec_raise_error_message, failure_message)
+      FAILURE_MESSAGE_FOR_EXCEPTION[actual] = failure_message
       raise actual
     end
   end

spec/mspec/lib/mspec/runner/exception.rb

@@ -29,7 +29,7 @@ class ExceptionState
 
     if @failure
       message
-    elsif raise_error_message = @exception.instance_variable_get(:@mspec_raise_error_message)
+    elsif raise_error_message = RaiseErrorMatcher::FAILURE_MESSAGE_FOR_EXCEPTION[@exception]
       raise_error_message.join("\n")
     else
       "#{@exception.class}: #{message}"

spec/mspec/lib/mspec/runner/formatters/base.rb

@@ -1,6 +1,7 @@
 require 'mspec/expectations/expectations'
 require 'mspec/runner/actions/timer'
 require 'mspec/runner/actions/tally'
+require 'mspec/utils/options'
 
 if ENV['CHECK_LEAKS']
   require 'mspec/runner/actions/leakchecker'
@@ -18,10 +19,17 @@ class BaseFormatter
 
     @count = 0 # For subclasses
 
-    if out.nil?
-      @out = $stdout
-    else
+    if out
       @out = File.open out, "w"
+    else
+      @out = $stdout
+    end
+
+    err = MSpecOptions.latest && MSpecOptions.latest.config[:error_output]
+    if err
+      @err = (err == 'stderr') ? $stderr : File.open(err, "w")
+    else
+      @err = @out
     end
   end
 
@@ -115,9 +123,9 @@ class BaseFormatter
 
   def print_exception(exc, count)
     outcome = exc.failure? ? "FAILED" : "ERROR"
-    print "\n#{count})\n#{exc.description} #{outcome}\n"
-    print exc.message, "\n"
-    print exc.backtrace, "\n"
+    @err.print "\n#{count})\n#{exc.description} #{outcome}\n"
+    @err.print exc.message, "\n"
+    @err.print exc.backtrace, "\n"
   end
 
   # A convenience method to allow printing to different outputs.

spec/mspec/lib/mspec/runner/mspec.rb

@@ -117,7 +117,7 @@ module MSpec
       raise e
     rescue SkippedSpecError => e
       return false
-    rescue Exception => exc
+    rescue Object => exc
       register_exit 1
       actions :exception, ExceptionState.new(current && current.state, location, exc)
       return false

spec/mspec/lib/mspec/utils/options.rb

@@ -32,6 +32,10 @@ class MSpecOptions
   # Raised if an unrecognized option is encountered.
   class ParseError < Exception; end
 
+  class << self
+    attr_accessor :latest
+  end
+
   attr_accessor :config, :banner, :width, :options
 
   def initialize(banner = "", width = 30, config = nil)
@@ -46,7 +50,7 @@ class MSpecOptions
       @extra << x
     }
 
-    yield self if block_given?
+    MSpecOptions.latest = self
   end
 
   # Registers an option. Acceptable formats for arguments are:
@@ -311,6 +315,11 @@ class MSpecOptions
        "Write formatter output to FILE") do |f|
       config[:output] = f
     end
+
+    on("--error-output", "FILE",
+       "Write error output of failing specs to FILE, or $stderr if value is 'stderr'.") do |f|
+      config[:error_output] = f
+    end
   end
 
   def filters

spec/mspec/lib/mspec/utils/script.rb

@@ -37,6 +37,17 @@ class MSpecScript
     config[key]
   end
 
+  class << self
+    attr_accessor :child_process
+  end
+
+  # True if the current process is the one going to run the specs with `MSpec.process`.
+  # False for e.g. `mspec` which exec's to `mspec-run`.
+  # This is useful in .mspec config files.
+  def self.child_process?
+    MSpecScript.child_process
+  end
+
   def initialize
     check_version!
 
@@ -267,7 +278,9 @@ class MSpecScript
 
   # Instantiates an instance and calls the series of methods to
   # invoke the script.
-  def self.main
+  def self.main(child_process = true)
+    MSpecScript.child_process = child_process
+
     script = new
     script.load_default
     script.try_load '~/.mspecrc'