Added minitest 1.3.0

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@19740 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

3 files changed, 613 insertions, 0 deletions

diff --git a/lib/minitest/mock.rb b/lib/minitest/mock.rb
new file mode 100644
index 0000000000..54af28c453
--- /dev/null
+++ b/lib/minitest/mock.rb
@@ -0,0 +1,37 @@
+############################################################
+# This file is imported from a different project.
+# DO NOT make modifications in this repo.
+# File a patch instead and assign it to Ryan Davis
+############################################################
+
+class MockExpectationError < StandardError; end
+
+module MiniTest
+  class Mock
+    def initialize
+      @expected_calls = {}
+      @actual_calls = Hash.new {|h,k| h[k] = [] }
+    end
+
+    def expect(name, retval, args=[])
+      n, r, a = name, retval, args # for the closure below
+      @expected_calls[name] = { :retval => retval, :args => args }
+      self.class.__send__(:define_method, name) { |*x|
+        raise ArgumentError unless @expected_calls[n][:args].size == x.size
+        @actual_calls[n] << { :retval => r, :args => x }
+        retval
+      }
+      self
+    end
+
+    def verify
+      @expected_calls.each_key do |name|
+        expected = @expected_calls[name]
+        msg = "expected #{name}, #{expected.inspect}"
+        raise MockExpectationError, msg unless
+          @actual_calls.has_key? name and @actual_calls[name].include?(expected)
+      end
+      true
+    end
+  end
+end
diff --git a/lib/minitest/spec.rb b/lib/minitest/spec.rb
new file mode 100644
index 0000000000..130910ed85
--- /dev/null
+++ b/lib/minitest/spec.rb
@@ -0,0 +1,88 @@
+############################################################
+# This file is imported from a different project.
+# DO NOT make modifications in this repo.
+# File a patch instead and assign it to Ryan Davis
+############################################################
+
+#!/usr/bin/ruby -w
+
+require 'minitest/unit'
+
+class Module
+  def infect_with_assertions pos_prefix, neg_prefix, skip_re, map = {}
+    MiniTest::Assertions.public_instance_methods(false).each do |meth|
+      meth = meth.to_s
+
+      new_name = case meth
+                 when /^assert/ then
+                   meth.sub(/^assert/, pos_prefix.to_s)
+                 when /^refute/ then
+                   meth.sub(/^refute/, neg_prefix.to_s)
+                 end
+      next unless new_name
+      next if new_name =~ skip_re
+
+      regexp, replacement = map.find { |re, _| new_name =~ re }
+      new_name.sub! regexp, replacement if replacement
+
+      # warn "%-22p -> %p %p" % [meth, new_name, regexp]
+      self.class_eval <<-EOM
+        def #{new_name} *args, &block
+          return MiniTest::Spec.current.#{meth}(*args, &self)     if Proc === self
+          return MiniTest::Spec.current.#{meth}(args.first, self) if args.size == 1
+          return MiniTest::Spec.current.#{meth}(self, *args)
+        end
+      EOM
+    end
+  end
+end
+
+Object.infect_with_assertions(:must, :wont,
+                              /^(must|wont)$|wont_(throw)|
+                                 must_(block|not?_|nothing|raise$)/x,
+                              /(must_throw)s/                 => '\1',
+                              /(?!not)_same/                  => '_be_same_as',
+                              /_in_/                          => '_be_within_',
+                              /_operator/                     => '_be',
+                              /_includes/                     => '_include',
+                              /(must|wont)_(.*_of|nil|empty)/ => '\1_be_\2',
+                              /must_raises/                   => 'must_raise')
+
+class Object
+  alias :must_be_close_to :must_be_within_delta
+  alias :wont_be_close_to :wont_be_within_delta
+end
+
+module Kernel
+  def describe desc, &block
+    cls = Class.new(MiniTest::Spec)
+    Object.const_set desc.to_s.split(/\W+/).map { |s| s.capitalize }.join, cls
+
+    cls.class_eval(&block)
+  end
+end
+
+class MiniTest::Spec < MiniTest::Unit::TestCase
+  def self.current
+    @@current_spec
+  end
+
+  def initialize name
+    super
+    @@current_spec = self
+  end
+
+  def self.before(type = :each, &block)
+    raise "unsupported before type: #{type}" unless type == :each
+    define_method :setup, &block
+  end
+
+  def self.after(type = :each, &block)
+    raise "unsupported after type: #{type}" unless type == :each
+    define_method :teardown, &block
+  end
+
+  def self.it desc, &block
+    define_method "test_#{desc.gsub(/\W+/, '_').downcase}", &block
+  end
+end
diff --git a/lib/minitest/unit.rb b/lib/minitest/unit.rb
new file mode 100644
index 0000000000..5ecd79567e
--- /dev/null
+++ b/lib/minitest/unit.rb
@@ -0,0 +1,488 @@
+############################################################
+# This file is imported from a different project.
+# DO NOT make modifications in this repo.
+# File a patch instead and assign it to Ryan Davis
+############################################################
+
+##
+#
+# Totally minimal drop-in replacement for test-unit
+#
+# TODO: refute -> debunk, prove/rebut, show/deny... lots of possibilities
+
+module MiniTest
+  class Assertion < Exception; end
+  class Skip < Assertion; end
+
+  file = if RUBY_VERSION =~ /^1\.9/ then  # bt's expanded, but __FILE__ isn't :(
+           File.expand_path __FILE__
+         elsif  __FILE__ =~ /^[^\.]/ then # assume both relative
+           require 'pathname'
+           pwd = Pathname.new Dir.pwd
+           pn = Pathname.new File.expand_path(__FILE__)
+           pn = File.join(".", pn.relative_path_from(pwd)) unless pn.relative?
+           pn.to_s
+         else                             # assume both are expanded
+           __FILE__
+         end
+
+  # './lib' in project dir, or '/usr/local/blahblah' if installed
+  MINI_DIR = File.dirname(File.dirname(file))
+
+  def self.filter_backtrace bt
+    return ["No backtrace"] unless bt
+
+    new_bt = []
+    bt.each do |line|
+      break if line.rindex(MINI_DIR, 0)
+      new_bt << line
+    end
+
+    new_bt = bt.reject { |line| line.rindex(MINI_DIR, 0) } if new_bt.empty?
+    new_bt = bt.dup if new_bt.empty?
+    new_bt
+  end
+
+  module Assertions
+    def mu_pp(obj)
+      s = obj.inspect
+      s = s.force_encoding(Encoding.default_external) if defined? Encoding
+      s
+    end
+
+    def _assertions= n
+      @_assertions = n
+    end
+
+    def _assertions
+      @_assertions ||= 0
+    end
+
+    def assert test, msg = nil
+      msg ||= "Failed assertion, no message given."
+      self._assertions += 1
+      unless test then
+        msg = msg.call if Proc === msg
+        raise MiniTest::Assertion, msg
+      end
+      true
+    end
+
+    def assert_block msg = nil
+      msg = message(msg) { "Expected block to return true value" }
+      assert yield, msg
+    end
+
+    def assert_empty obj, msg = nil
+      msg = message(msg) { "Expected #{obj.inspect} to be empty" }
+      assert_respond_to obj, :empty?
+      assert obj.empty?, msg
+    end
+
+    def assert_equal exp, act, msg = nil
+      msg = message(msg) { "Expected #{mu_pp(exp)}, not #{mu_pp(act)}" }
+      assert(exp == act, msg)
+    end
+
+    def assert_in_delta exp, act, delta = 0.001, msg = nil
+      n = (exp - act).abs
+      msg = message(msg) { "Expected #{exp} - #{act} (#{n}) to be < #{delta}" }
+      assert delta > n, msg
+    end
+
+    def assert_in_epsilon a, b, epsilon = 0.001, msg = nil
+      assert_in_delta a, b, [a, b].min * epsilon, msg
+    end
+
+    def assert_includes collection, obj, msg = nil
+      msg = message(msg) { "Expected #{mu_pp(collection)} to include #{mu_pp(obj)}" }
+      assert_respond_to collection, :include?
+      assert collection.include?(obj), msg
+    end
+
+    def assert_instance_of cls, obj, msg = nil
+      msg = message(msg) { "Expected #{mu_pp(obj)} to be an instance of #{cls}, not #{obj.class}" }
+      flip = (Module === obj) && ! (Module === cls) # HACK for specs
+      obj, cls = cls, obj if flip
+      assert cls === obj, msg
+    end
+
+    def assert_kind_of cls, obj, msg = nil # TODO: merge with instance_of
+      msg = message(msg) {
+        "Expected #{mu_pp(obj)} to be a kind of #{cls}, not #{obj.class}" }
+      flip = (Module === obj) && ! (Module === cls) # HACK for specs
+      obj, cls = cls, obj if flip
+      assert obj.kind_of?(cls), msg
+    end
+
+    def assert_match exp, act, msg = nil
+      msg = message(msg) { "Expected #{mu_pp(act)} to match #{mu_pp(exp)}" }
+      assert_respond_to act, :"=~"
+      (exp = /#{exp}/) if String === exp && String === act
+      assert act =~ exp, msg
+    end
+
+    def assert_nil obj, msg = nil
+      msg = message(msg) { "Expected #{mu_pp(obj)} to be nil" }
+      assert obj.nil?, msg
+    end
+
+    def assert_operator o1, op, o2, msg = nil
+      msg = message(msg) { "Expected #{mu_pp(o1)} to be #{op} #{mu_pp(o2)}" }
+      assert o1.__send__(op, o2), msg
+    end
+
+    def assert_raises *exp
+      msg = String === exp.last ? exp.pop : nil
+      should_raise = false
+      begin
+        yield
+        should_raise = true
+      rescue Exception => e
+        assert_includes(exp, e.class, exception_details(e, "<#{mu_pp(exp)}> exception expected, not"))
+        return e
+      end
+
+      exp = exp.first if exp.size == 1
+      flunk "#{mu_pp(exp)} expected but nothing was raised." if should_raise
+    end
+
+    def assert_respond_to obj, meth, msg = nil
+      msg = message(msg) {
+          "Expected #{mu_pp(obj)} (#{obj.class}) to respond to ##{meth}"
+        }
+      flip = (Symbol === obj) && ! (Symbol === meth) # HACK for specs
+      obj, meth = meth, obj if flip
+      assert obj.respond_to?(meth), msg
+    end
+
+    def assert_same exp, act, msg = nil
+      msg = message(msg) {
+        data = [mu_pp(act), act.object_id, mu_pp(exp), exp.object_id]
+        "Expected %s (0x%x) to be the same as %s (0x%x)" % data
+      }
+      assert exp.equal?(act), msg
+    end
+
+    def assert_send send_ary, m = nil
+      recv, msg, *args = send_ary
+      m = message(m) {
+        "Expected #{mu_pp(recv)}.#{msg}(*#{mu_pp(args)}) to return true" }
+      assert recv.__send__(msg, *args), m
+    end
+
+    def assert_throws sym, msg = nil
+      default = "Expected #{mu_pp(sym)} to have been thrown"
+      caught = true
+      catch(sym) do
+        begin
+          yield
+        rescue ArgumentError => e     # 1.9 exception
+          default += ", not #{e.message.split(/ /).last}"
+        rescue NameError => e         # 1.8 exception
+          default += ", not #{e.name.inspect}"
+        end
+        caught = false
+      end
+
+      assert caught, message(msg) { default }
+    end
+
+    def capture_io
+      require 'stringio'
+
+      orig_stdout, orig_stderr         = $stdout.dup, $stderr.dup
+      captured_stdout, captured_stderr = StringIO.new, StringIO.new
+      $stdout, $stderr                 = captured_stdout, captured_stderr
+
+      yield
+
+      return captured_stdout.string, captured_stderr.string
+    ensure
+      $stdout = orig_stdout
+      $stderr = orig_stderr
+    end
+
+    def exception_details e, msg
+      "#{msg}\nClass: <#{e.class}>\nMessage: <#{e.message.inspect}>\n---Backtrace---\n#{MiniTest::filter_backtrace(e.backtrace).join("\n")}\n---------------"
+    end
+
+    def flunk msg = nil
+      msg ||= "Epic Fail!"
+      assert false, msg
+    end
+
+    def message msg = nil, &default
+      proc {
+        if msg then
+          msg = msg.to_s unless String === msg
+          msg += '.' unless msg.empty?
+          msg += "\n#{default.call}."
+          msg.strip
+        else
+          "#{default.call}."
+        end
+      }
+    end
+
+    # used for counting assertions
+    def pass msg = nil
+      assert true
+    end
+
+    def refute test, msg = nil
+      msg ||= "Failed refutation, no message given"
+      not assert(! test, msg)
+    end
+
+    def refute_empty obj, msg = nil
+      msg = message(msg) { "Expected #{obj.inspect} to not be empty" }
+      assert_respond_to obj, :empty?
+      refute obj.empty?, msg
+    end
+
+    def refute_equal exp, act, msg = nil
+      msg = message(msg) { "Expected #{mu_pp(act)} to not be equal to #{mu_pp(exp)}" }
+      refute exp == act, msg
+    end
+
+    def refute_in_delta exp, act, delta = 0.001, msg = nil
+      n = (exp - act).abs
+      msg = message(msg) { "Expected #{exp} - #{act} (#{n}) to not be < #{delta}" }
+      refute delta > n, msg
+    end
+
+    def refute_in_epsilon a, b, epsilon = 0.001, msg = nil
+      refute_in_delta a, b, a * epsilon, msg
+    end
+
+    def refute_includes collection, obj, msg = nil
+      msg = message(msg) { "Expected #{mu_pp(collection)} to not include #{mu_pp(obj)}" }
+      assert_respond_to collection, :include?
+      refute collection.include?(obj), msg
+    end
+
+    def refute_instance_of cls, obj, msg = nil
+      msg = message(msg) { "Expected #{mu_pp(obj)} to not be an instance of #{cls}" }
+      flip = (Module === obj) && ! (Module === cls) # HACK for specs
+      obj, cls = cls, obj if flip
+      refute cls === obj, msg
+    end
+
+    def refute_kind_of cls, obj, msg = nil # TODO: merge with instance_of
+      msg = message(msg) { "Expected #{mu_pp(obj)} to not be a kind of #{cls}" }
+      flip = (Module === obj) && ! (Module === cls) # HACK for specs
+      obj, cls = cls, obj if flip
+      refute obj.kind_of?(cls), msg
+    end
+
+    def refute_match exp, act, msg = nil
+      msg = message(msg) { "Expected #{mu_pp(act)} to not match #{mu_pp(exp)}" }
+      refute act =~ exp, msg
+    end
+
+    def refute_nil obj, msg = nil
+      msg = message(msg) { "Expected #{mu_pp(obj)} to not be nil" }
+      refute obj.nil?, msg
+    end
+
+    def refute_operator o1, op, o2, msg = nil
+      msg = message(msg) { "Expected #{mu_pp(o1)} to not be #{op} #{mu_pp(o2)}" }
+      refute o1.__send__(op, o2), msg
+    end
+
+    def refute_respond_to obj, meth, msg = nil
+      msg = message(msg) { "Expected #{mu_pp(obj)} to not respond to #{meth}" }
+      flip = (Symbol === obj) && ! (Symbol === meth) # HACK for specs
+      obj, meth = meth, obj if flip
+      refute obj.respond_to?(meth), msg
+    end
+
+    def refute_same exp, act, msg = nil
+      msg = message(msg) { "Expected #{mu_pp(act)} to not be the same as #{mu_pp(exp)}" }
+      refute exp.equal?(act), msg
+    end
+
+    def skip msg = nil
+      msg ||= "Skipped, no message given"
+      raise MiniTest::Skip, msg
+    end
+  end
+
+  class Unit
+    VERSION = "1.3.0"
+
+    attr_accessor :report, :failures, :errors, :skips
+    attr_accessor :test_count, :assertion_count
+
+    @@installed_at_exit ||= false
+    @@out = $stdout
+
+    def self.autorun
+      at_exit {
+        exit_code = MiniTest::Unit.new.run(ARGV)
+        exit false if exit_code && exit_code != 0
+      } unless @@installed_at_exit
+      @@installed_at_exit = true
+    end
+
+    def self.output= stream
+      @@out = stream
+    end
+
+    def location e
+      e.backtrace.find { |s|
+        s !~ /in .(assert|refute|flunk|pass|fail|raise)/
+      }.sub(/:in .*$/, '')
+    end
+
+    def puke klass, meth, e
+      e = case e
+          when MiniTest::Skip then
+            @skips += 1
+            "Skipped:\n#{meth}(#{klass}) [#{location e}]:\n#{e.message}\n"
+          when MiniTest::Assertion then
+            @failures += 1
+            "Failure:\n#{meth}(#{klass}) [#{location e}]:\n#{e.message}\n"
+          else
+            @errors += 1
+            bt = MiniTest::filter_backtrace(e.backtrace).join("\n    ")
+            "Error:\n#{meth}(#{klass}):\n#{e.class}: #{e.message}\n    #{bt}\n"
+          end
+      @report << e
+      e[0, 1]
+    end
+
+    def initialize
+      @report = []
+      @errors = @failures = @skips = 0
+      @verbose = false
+    end
+
+    ##
+    # Top level driver, controls all output and filtering.
+
+    def run args = []
+      @verbose = args.delete('-v')
+
+      filter = if args.first =~ /^(-n|--name)$/ then
+                 args.shift
+                 arg = args.shift
+                 arg =~ /\/(.*)\// ? Regexp.new($1) : arg
+               else
+                 /./ # anything - ^test_ already filtered by #tests
+               end
+
+      @@out.puts "Loaded suite #{$0.sub(/\.rb$/, '')}\nStarted"
+
+      start = Time.now
+      run_test_suites filter
+
+      @@out.puts
+      @@out.puts "Finished in #{'%.6f' % (Time.now - start)} seconds."
+
+      @report.each_with_index do |msg, i|
+        @@out.puts "\n%3d) %s" % [i + 1, msg]
+      end
+
+      @@out.puts
+
+      format = "%d tests, %d assertions, %d failures, %d errors, %d skips"
+      @@out.puts format % [test_count, assertion_count, failures, errors, skips]
+
+      return failures + errors if @test_count > 0 # or return nil...
+    end
+
+    def run_test_suites filter = /./
+      @test_count, @assertion_count = 0, 0
+      old_sync, @@out.sync = @@out.sync, true if @@out.respond_to? :sync=
+      TestCase.test_suites.each do |suite|
+        suite.test_methods.grep(filter).each do |test|
+          inst = suite.new test
+          inst._assertions = 0
+          @@out.print "#{suite}##{test}: " if @verbose
+
+          t = Time.now if @verbose
+          result = inst.run(self)
+
+          @@out.print "%.2f s: " % (Time.now - t) if @verbose
+          @@out.print result
+          @@out.puts if @verbose
+          @test_count += 1
+          @assertion_count += inst._assertions
+        end
+      end
+      @@out.sync = old_sync if @@out.respond_to? :sync=
+      [@test_count, @assertion_count]
+    end
+
+    class TestCase
+      attr_reader :name
+
+      def run runner
+        result = '.'
+        begin
+          @passed = nil
+          self.setup
+          self.__send__ self.name
+          @passed = true
+        rescue Exception => e
+          @passed = false
+          result = runner.puke(self.class, self.name, e)
+        ensure
+          begin
+            self.teardown
+          rescue Exception => e
+            result = runner.puke(self.class, self.name, e)
+          end
+        end
+        result
+      end
+
+      def initialize name
+        @name = name
+        @passed = nil
+      end
+
+      def self.reset
+        @@test_suites = {}
+      end
+
+      reset
+
+      def self.inherited klass
+        @@test_suites[klass] = true
+      end
+
+      def self.test_order
+        :random
+      end
+
+      def self.test_suites
+        @@test_suites.keys.sort_by { |ts| ts.name }
+      end
+
+      def self.test_methods
+        methods = public_instance_methods(true).grep(/^test/).map { |m|
+          m.to_s
+        }.sort
+
+        if self.test_order == :random then
+          max = methods.size
+          methods = methods.sort_by { rand(max) }
+        end
+
+        methods
+      end
+
+      def setup; end
+      def teardown; end
+
+      def passed?
+        @passed
+      end
+
+      include MiniTest::Assertions
+    end # class TestCase
+  end # class Test
+end # module Mini