assertions.rb: refine all_assertions

* test/lib/test/unit/assertions.rb (all_assertions): refine
  total failiure message.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@52068 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

test/lib/test/unit/assertions.rb

@@ -454,14 +454,24 @@ EOT
         rescue Exception => e
           @failures[key] = e
         end
+
+        def message
+          i = 0
+          @failures.map {|k, v|
+            "\n#{i+=1}. Assertion for #{k.inspect}\n#{v.message.gsub(/^/, '   | ')}"
+          }.join("\n")
+        end
+
+        def pass?
+          @failures.empty?
+        end
       end
 
       def all_assertions(msg = nil)
         all = AllFailures.new
         yield all
       ensure
-        failures = all.failures
+        assert(all.pass?, message(msg) {all.message})
-        assert(failures.empty?, message(msg) {mu_pp(failures)})
       end
 
       def build_message(head, template=nil, *arguments) #:nodoc: