* test/dbm/test_dbm.rb: remove locking test, which may not be

  supported on some platforms.  [ruby-dev:27030]


git-svn-id: http://svn.ruby-lang.org/repos/ruby/branches/ruby_1_8@9125 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

2 files changed, 4 insertions, 83 deletions

diff --git a/test/dbm/test_dbm.rb b/test/dbm/test_dbm.rb
index 4f49da3f6..d566015df 100644
--- a/test/dbm/test_dbm.rb
+++ b/test/dbm/test_dbm.rb
@@ -85,83 +85,6 @@ if defined? DBM
     def test_s_open_with_block
       assert_equal(DBM.open("tmptest_dbm") { :foo }, :foo)
     end
-    def test_s_open_lock
-      return unless have_fork?	# snip this test
-      fork() {
-        assert_instance_of(DBM, dbm = DBM.open("tmptest_dbm", 0644))
-        sleep 2
-      }
-      begin
-        sleep 1
-        assert_raise(Errno::EWOULDBLOCK, "NEVER MIND IF YOU USE Berkeley DB3") {
-          begin
-            assert_instance_of(DBM, dbm2 = DBM.open("tmptest_dbm", 0644))
-          rescue Errno::EAGAIN, Errno::EACCES, Errno::EINVAL
-            raise Errno::EWOULDBLOCK
-          end
-        }
-      ensure
-        Process.wait
-      end
-    end
-
-=begin
-    # Is it guaranteed on many OS?
-    def test_s_open_lock_one_process
-      # locking on one process
-      assert_instance_of(DBM, dbm  = DBM.open("tmptest_dbm", 0644))
-      assert_raise(Errno::EWOULDBLOCK) {
-        begin
-          DBM.open("tmptest_dbm", 0644)
-        rescue Errno::EAGAIN
-          raise Errno::EWOULDBLOCK
-        end
-      }
-    end
-=end
-
-    def test_s_open_nolock
-      # dbm 1.8.0 specific
-      if not defined? DBM::NOLOCK
-        return
-      end
-      return unless have_fork?	# snip this test
-
-      fork() {
-        assert_instance_of(DBM, dbm  = DBM.open("tmptest_dbm", 0644,
-                                                  DBM::NOLOCK))
-        sleep 2
-      }
-      sleep 1
-      begin
-        dbm2 = nil
-        assert_no_exception(Errno::EWOULDBLOCK, Errno::EAGAIN, Errno::EACCES) {
-          assert_instance_of(DBM, dbm2 = DBM.open("tmptest_dbm", 0644))
-        }
-      ensure
-        Process.wait
-        dbm2.close if dbm2
-      end
-
-      p Dir.glob("tmptest_dbm*") if $DEBUG
-
-      fork() {
-        assert_instance_of(DBM, dbm  = DBM.open("tmptest_dbm", 0644))
-        sleep 2
-      }
-      begin
-        sleep 1
-        dbm2 = nil
-        assert_no_exception(Errno::EWOULDBLOCK, Errno::EAGAIN, Errno::EACCES) {
-          # this test is failed on Cygwin98 (???)
-          assert_instance_of(DBM, dbm2 = DBM.open("tmptest_dbm", 0644,
-                                                     DBM::NOLOCK))
-        }
-      ensure
-        Process.wait
-        dbm2.close if dbm2
-      end
-    end
 
     def test_s_open_error
       assert_instance_of(DBM, dbm = DBM.open("tmptest_dbm", 0))
diff --git a/test/ruby/test_env.rb b/test/ruby/test_env.rb
index edc7dcaf6..3a65f91fa 100644
--- a/test/ruby/test_env.rb
+++ b/test/ruby/test_env.rb
@@ -4,15 +4,13 @@ class TestEnv < Test::Unit::TestCase
   IGNORE_CASE = /djgpp|bccwin|mswin|mingw/ =~ RUBY_PLATFORM
 
   def setup
-    @backup = ENV['test']
-    @BACKUP = ENV['TEST']
-    ENV['test'] = nil
-    ENV['TEST'] = nil
+    @backup = ENV.delete('test')
+    @BACKUP = ENV.delete('TEST')
   end
 
   def teardown
-    ENV['test'] = @backup
-    ENV['TEST'] = @BACKUP
+    ENV['test'] = @backup if @backup
+    ENV['TEST'] = @BACKUP if @BACKUP
   end
 
   def test_bracket