Added miniunit 1.3.0

git-svn-id: http://svn.ruby-lang.org/repos/ruby/trunk@19503 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 458 insertions, 0 deletions

diff --git a/lib/mini/test.rb b/lib/mini/test.rb
new file mode 100644
index 000000000..ceebf6ade
--- /dev/null
+++ b/lib/mini/test.rb
@@ -0,0 +1,458 @@
+############################################################
+# 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 Mini
+  class Assertion < Exception; end
+
+  file = if __FILE__ =~ /^[^\.]/ then # OMG ruby 1.9 is so lame (rubinius too)
+           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
+           __FILE__
+         end
+
+  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.index(MINI_DIR) == 0
+      new_bt << line
+    end
+
+    new_bt = bt.reject { |line| line.index(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
+      raise Mini::Assertion, msg unless test
+      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}"
+      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}"
+      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)} 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, "Expected #{mu_pp(act)} to be the same as #{mu_pp(exp)}"
+      assert exp.equal?(act), msg
+    end
+
+    def assert_send send_ary, msg = nil
+      recv, msg, *args = send_ary
+      msg = message msg, "Expected ##{msg} on #{mu_pp(recv)} to return true"
+      assert recv.__send__(msg, *args), msg
+    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#{Mini::filter_backtrace(e.backtrace).join("\n")}\n---------------"
+    end
+
+    def fail msg = nil
+      msg ||= "Epic Fail!"
+      assert false, msg
+    end
+
+    alias :flunk :fail
+
+    def message msg, default
+      if msg then
+        msg = msg.to_s unless String === msg
+        msg += '.' unless msg.empty?
+        msg += "\n#{default}."
+        msg.strip
+      else
+        "#{default}."
+      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
+  end
+
+  class Test
+    VERSION = "1.3.0"
+
+    attr_reader :report, :failures, :errors
+
+    @@installed_at_exit ||= false
+    @@out = $stdout
+
+    def self.autorun
+      at_exit {
+        exit_code = Mini::Test.new.run(ARGV)
+        exit exit_code if exit_code
+      } unless @@installed_at_exit
+      @@installed_at_exit = true
+    end
+
+    def self.output= stream
+      @@out = stream
+    end
+
+    def puke klass, meth, e
+      if Mini::Assertion === e then
+        @failures += 1
+
+        loc = e.backtrace.find { |s| s !~ /in .(assert|flunk|pass|fail|raise)/ }
+        loc.sub!(/:in .*$/, '')
+
+        @report << "Failure:\n#{meth}(#{klass}) [#{loc}]:\n#{e.message}\n"
+        'F'
+      else
+        @errors += 1
+        bt = Mini::filter_backtrace(e.backtrace).join("\n    ")
+        e = "Error:\n#{meth}(#{klass}):\n#{e.class}: #{e.message}\n    #{bt}\n"
+        @report << e
+        'E'
+      end
+    end
+
+    def initialize
+      @report = []
+      @errors = @failures = 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"
+      @@out.puts format % [@test_count, @assertion_count, failures, errors]
+
+      return failures + errors if @test_count > 0 # or return nil...
+    end
+
+    def run_test_suites filter = /^test/
+      @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
+          self.setup
+          self.__send__ self.name
+        rescue Exception => e
+          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
+      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
+
+      include Mini::Assertions
+    end # class TestCase
+  end # class Test
+end # module Mini