* test/dbm/test_dbm.rb: merged from ext/dbm/testdbm.rb.

* test/gdbm/test_gdbm.rb: merged from ext/gdbm/testgdbm.rb.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_1_8@8566 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

2 files changed, 1193 insertions, 4 deletions

diff --git a/test/dbm/test_dbm.rb b/test/dbm/test_dbm.rb
index 2de73d1d5e..1bf1480a2f 100644
--- a/test/dbm/test_dbm.rb
+++ b/test/dbm/test_dbm.rb
@@ -1,5 +1,4 @@
-require 'test/unit/testsuite'
-require 'test/unit/testcase'
+require 'test/unit'
 
 begin
   require 'dbm'
@@ -11,6 +10,570 @@ if defined? DBM
   require 'fileutils'
 
   class TestDBM < Test::Unit::TestCase
+    def TestDBM.uname_s
+      require 'rbconfig'
+      case Config::CONFIG['host_os']
+      when 'cygwin'
+        require 'Win32API'
+        uname = Win32API.new('cygwin1', 'uname', 'P', 'I')
+        utsname = ' ' * 100
+        raise 'cannot get system name' if uname.call(utsname) == -1
+
+        utsname.unpack('A20' * 5)[0]
+      else
+        Config::CONFIG['host_os']
+      end
+    end
+    SYSTEM = uname_s
+
+    def setup
+      @path = "tmptest_dbm_"
+      assert_instance_of(DBM, @dbm = DBM.new(@path))
+
+      # prepare to make readonly DBM file
+      DBM.open("tmptest_dbm_rdonly") {|dbm|
+        dbm['foo'] = 'FOO'
+      }
+      
+      File.chmod(0400, *Dir.glob("tmptest_dbm_rdonly.*"))
+
+      assert_instance_of(DBM, @dbm_rdonly = DBM.new("tmptest_dbm_rdonly", nil))
+    end
+    def teardown
+      assert_nil(@dbm.close)
+      assert_nil(@dbm_rdonly.close)
+      GC.start
+      File.delete *Dir.glob("tmptest_dbm*").to_a
+      p Dir.glob("tmptest_dbm*") if $DEBUG
+    end
+
+    def check_size(expect, dbm=@dbm)
+      assert_equal(expect, dbm.size)
+      n = 0
+      dbm.each { n+=1 }
+      assert_equal(expect, n)
+      if expect == 0
+        assert_equal(true, dbm.empty?)
+      else
+        assert_equal(false, dbm.empty?)
+      end
+    end
+
+    def test_s_new_has_no_block
+      # DBM.new ignore the block
+      foo = true
+      assert_instance_of(DBM, dbm = DBM.new("tmptest_dbm") { foo = false })
+      assert_equal(foo, true)
+      assert_nil(dbm.close)
+    end
+    def test_s_open_no_create
+      assert_nil(dbm = DBM.open("tmptest_dbm", nil))
+    ensure
+      dbm.close if dbm
+    end
+    def test_s_open_with_block
+      assert_equal(DBM.open("tmptest_dbm") { :foo }, :foo)
+    end
+    def test_s_open_lock
+      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
+
+      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))
+      assert_raise(Errno::EACCES, "NEVER MIND IF YOU USE Berkeley DB3") {
+        DBM.open("tmptest_dbm", 0)
+      }
+      dbm.close
+    end
+
+    def test_close
+      assert_instance_of(DBM, dbm = DBM.open("tmptest_dbm"))
+      assert_nil(dbm.close)
+
+      # closed DBM file
+      assert_raise(DBMError) { dbm.close }
+    end
+
+    def test_aref
+      assert_equal('bar', @dbm['foo'] = 'bar')
+      assert_equal('bar', @dbm['foo'])
+
+      assert_nil(@dbm['bar'])
+    end
+
+    def test_fetch
+      assert_equal('bar', @dbm['foo']='bar')
+      assert_equal('bar', @dbm.fetch('foo'))
+
+      # key not found
+      assert_raise(IndexError) {
+        @dbm.fetch('bar')
+      }
+
+      # test for `ifnone' arg
+      assert_equal('baz', @dbm.fetch('bar', 'baz'))
+
+      # test for `ifnone' block
+      assert_equal('foobar', @dbm.fetch('bar') {|key| 'foo' + key })
+    end
+
+    def test_aset
+      num = 0
+      2.times {|i|
+        assert_equal('foo', @dbm['foo'] = 'foo')
+        assert_equal('foo', @dbm['foo'])
+        assert_equal('bar', @dbm['foo'] = 'bar')
+        assert_equal('bar', @dbm['foo'])
+
+        num += 1 if i == 0
+        assert_equal(num, @dbm.size)
+
+        # assign nil
+        assert_equal('', @dbm['bar'] = '')
+        assert_equal('', @dbm['bar'])
+
+        num += 1 if i == 0
+        assert_equal(num, @dbm.size)
+
+        # empty string
+        assert_equal('', @dbm[''] = '')
+        assert_equal('', @dbm[''])
+
+        num += 1 if i == 0
+        assert_equal(num, @dbm.size)
+
+        # Fixnum
+        assert_equal('200', @dbm['100'] = '200')
+        assert_equal('200', @dbm['100'])
+
+        num += 1 if i == 0
+        assert_equal(num, @dbm.size)
+
+        # Big key and value
+        assert_equal('y' * 100, @dbm['x' * 100] = 'y' * 100)
+        assert_equal('y' * 100, @dbm['x' * 100])
+
+        num += 1 if i == 0
+        assert_equal(num, @dbm.size)
+      }
+    end
+
+    def test_index
+      assert_equal('bar', @dbm['foo'] = 'bar')
+      assert_equal('foo', @dbm.index('bar'))
+      assert_nil(@dbm['bar'])
+    end
+
+    def test_indexes
+      keys = %w(foo bar baz)
+      values = %w(FOO BAR BAZ)
+      @dbm[keys[0]], @dbm[keys[1]], @dbm[keys[2]] = values
+      assert_equal(values.reverse, @dbm.indexes(*keys.reverse))
+    end
+
+    def test_values_at
+      keys = %w(foo bar baz)
+      values = %w(FOO BAR BAZ)
+      @dbm[keys[0]], @dbm[keys[1]], @dbm[keys[2]] = values
+      assert_equal(values.reverse, @dbm.values_at(*keys.reverse))
+    end
+
+    def test_select_with_block
+      keys = %w(foo bar baz)
+      values = %w(FOO BAR BAZ)
+      @dbm[keys[0]], @dbm[keys[1]], @dbm[keys[2]] = values
+      ret = @dbm.select {|k,v|
+        assert_equal(k.upcase, v)
+        k != "bar"
+      }
+      assert_equal([['baz', 'BAZ'], ['foo', 'FOO']],
+                    ret.sort)
+    end
+
+    def test_length
+      num = 10
+      assert_equal(0, @dbm.size)
+      num.times {|i|
+        i = i.to_s
+        @dbm[i] = i
+      }
+      assert_equal(num, @dbm.size)
+
+      @dbm.shift
+
+      assert_equal(num - 1, @dbm.size)
+    end
+
+    def test_empty?
+      assert_equal(true, @dbm.empty?)
+      @dbm['foo'] = 'FOO'
+      assert_equal(false, @dbm.empty?)
+    end
+
+    def test_each_pair
+      n = 0
+      @dbm.each_pair { n += 1 }
+      assert_equal(0, n)
+
+      keys = %w(foo bar baz)
+      values = %w(FOO BAR BAZ)
+
+      @dbm[keys[0]], @dbm[keys[1]], @dbm[keys[2]] = values
+
+      n = 0
+      ret = @dbm.each_pair {|key, val|
+        assert_not_nil(i = keys.index(key))
+        assert_equal(val, values[i])
+
+        n += 1
+      }
+      assert_equal(keys.size, n)
+      assert_equal(@dbm, ret)
+    end
+
+    def test_each_value
+      n = 0
+      @dbm.each_value { n += 1 }
+      assert_equal(0, n)
+
+      keys = %w(foo bar baz)
+      values = %w(FOO BAR BAZ)
+
+      @dbm[keys[0]], @dbm[keys[1]], @dbm[keys[2]] = values
+
+      n = 0
+      ret = @dbm.each_value {|val|
+        assert_not_nil(key = @dbm.index(val))
+        assert_not_nil(i = keys.index(key))
+        assert_equal(val, values[i])
+
+        n += 1
+      }
+      assert_equal(keys.size, n)
+      assert_equal(@dbm, ret)
+    end
+
+    def test_each_key
+      n = 0
+      @dbm.each_key { n += 1 }
+      assert_equal(0, n)
+
+      keys = %w(foo bar baz)
+      values = %w(FOO BAR BAZ)
+
+      @dbm[keys[0]], @dbm[keys[1]], @dbm[keys[2]] = values
+
+      n = 0
+      ret = @dbm.each_key {|key|
+        assert_not_nil(i = keys.index(key))
+        assert_equal(@dbm[key], values[i])
+
+        n += 1
+      }
+      assert_equal(keys.size, n)
+      assert_equal(@dbm, ret)
+    end
+
+    def test_keys
+      assert_equal([], @dbm.keys)
+
+      keys = %w(foo bar baz)
+      values = %w(FOO BAR BAZ)
+
+      @dbm[keys[0]], @dbm[keys[1]], @dbm[keys[2]] = values
+
+      assert_equal(keys.sort, @dbm.keys.sort)
+      assert_equal(values.sort, @dbm.values.sort)
+    end
+
+    def test_values
+      test_keys
+    end
+
+    def test_shift
+      assert_nil(@dbm.shift)
+      assert_equal(0, @dbm.size)
+
+      keys = %w(foo bar baz)
+      values = %w(FOO BAR BAZ)
+
+      @dbm[keys[0]], @dbm[keys[1]], @dbm[keys[2]] = values
+
+      ret_keys = []
+      ret_values = []
+      while ret = @dbm.shift
+        ret_keys.push ret[0]
+        ret_values.push ret[1]
+
+        assert_equal(keys.size - ret_keys.size, @dbm.size)
+      end
+
+      assert_equal(keys.sort, ret_keys.sort)
+      assert_equal(values.sort, ret_values.sort)
+    end
+
+    def test_delete
+      keys = %w(foo bar baz)
+      values = %w(FOO BAR BAZ)
+      key = keys[1]
+
+      assert_nil(@dbm.delete(key))
+      assert_equal(0, @dbm.size)
+
+      @dbm[keys[0]], @dbm[keys[1]], @dbm[keys[2]] = values
+
+      assert_equal('BAR', @dbm.delete(key))
+      assert_nil(@dbm[key])
+      assert_equal(2, @dbm.size)
+
+      assert_nil(@dbm.delete(key))
+
+      if /^CYGWIN_9/ !~ SYSTEM
+        assert_raise(DBMError) {
+          @dbm_rdonly.delete("foo")
+        }
+
+        assert_nil(@dbm_rdonly.delete("bar"))
+      end
+    end
+    def test_delete_with_block
+      key = 'no called block'
+      @dbm[key] = 'foo'
+      assert_equal('foo', @dbm.delete(key) {|k| k.replace 'called block'})
+      assert_equal('no called block', key)
+      assert_equal(0, @dbm.size)
+
+      key = 'no called block'
+      assert_equal(:blockval,
+                    @dbm.delete(key) {|k| k.replace 'called block'; :blockval})
+      assert_equal('called block', key)
+      assert_equal(0, @dbm.size)
+    end
+
+    def test_delete_if
+      v = "0"
+      100.times {@dbm[v] = v; v = v.next}
+
+      ret = @dbm.delete_if {|key, val| key.to_i < 50}
+      assert_equal(@dbm, ret)
+      check_size(50, @dbm)
+
+      ret = @dbm.delete_if {|key, val| key.to_i >= 50}
+      assert_equal(@dbm, ret)
+      check_size(0, @dbm)
+
+      # break
+      v = "0"
+      100.times {@dbm[v] = v; v = v.next}
+      check_size(100, @dbm)
+      n = 0;
+      @dbm.delete_if {|key, val|
+        break if n > 50
+        n+=1
+        true
+      }
+      assert_equal(51, n)
+      check_size(49, @dbm)
+
+      @dbm.clear
+
+      # raise
+      v = "0"
+      100.times {@dbm[v] = v; v = v.next}
+      check_size(100, @dbm)
+      n = 0;
+      begin
+        @dbm.delete_if {|key, val|
+          raise "runtime error" if n > 50
+          n+=1
+          true
+        }
+      rescue
+      end
+      assert_equal(51, n)
+      check_size(49, @dbm)
+    end
+
+    def test_reject
+      v = "0"
+      100.times {@dbm[v] = v; v = v.next}
+
+      hash = @dbm.reject {|key, val| key.to_i < 50}
+      assert_instance_of(Hash, hash)
+      assert_equal(100, @dbm.size)
+
+      assert_equal(50, hash.size)
+      hash.each_pair {|key,val|
+        assert_equal(false, key.to_i < 50)
+        assert_equal(key, val)
+      }
+
+      hash = @dbm.reject {|key, val| key.to_i < 100}
+      assert_instance_of(Hash, hash)
+      assert_equal(true, hash.empty?)
+    end
+
+    def test_clear
+      v = "1"
+      100.times {v = v.next; @dbm[v] = v}
+
+      assert_equal(@dbm, @dbm.clear)
+
+      # validate DBM#size
+      i = 0
+      @dbm.each { i += 1 }
+      assert_equal(@dbm.size, i)
+      assert_equal(0, i)
+    end
+
+    def test_invert
+      v = "0"
+      100.times {@dbm[v] = v; v = v.next}
+
+      hash = @dbm.invert
+      assert_instance_of(Hash, hash)
+      assert_equal(100, hash.size)
+      hash.each_pair {|key, val|
+        assert_equal(key.to_i, val.to_i)
+      }
+    end
+
+    def test_update
+      hash = {}
+      v = "0"
+      100.times {v = v.next; hash[v] = v}
+
+      @dbm["101"] = "101"
+      @dbm.update hash
+      assert_equal(101, @dbm.size)
+      @dbm.each_pair {|key, val|
+        assert_equal(key.to_i, val.to_i)
+      }
+    end
+
+    def test_replace
+      hash = {}
+      v = "0"
+      100.times {v = v.next; hash[v] = v}
+
+      @dbm["101"] = "101"
+      @dbm.replace hash
+      assert_equal(100, @dbm.size)
+      @dbm.each_pair {|key, val|
+        assert_equal(key.to_i, val.to_i)
+      }
+    end
+
+    def test_haskey?
+      assert_equal('bar', @dbm['foo']='bar')
+      assert_equal(true,  @dbm.has_key?('foo'))
+      assert_equal(false, @dbm.has_key?('bar'))
+    end
+
+    def test_has_value?
+      assert_equal('bar', @dbm['foo']='bar')
+      assert_equal(true,  @dbm.has_value?('bar'))
+      assert_equal(false, @dbm.has_value?('foo'))
+    end
+
+    def test_to_a
+      v = "0"
+      100.times {v = v.next; @dbm[v] = v}
+
+      ary = @dbm.to_a
+      assert_instance_of(Array, ary)
+      assert_equal(100, ary.size)
+      ary.each {|key,val|
+        assert_equal(key.to_i, val.to_i)
+      }
+    end
+
+    def test_to_hash
+      v = "0"
+      100.times {v = v.next; @dbm[v] = v}
+
+      hash = @dbm.to_hash
+      assert_instance_of(Hash, hash)
+      assert_equal(100, hash.size)
+      hash.each {|key,val|
+        assert_equal(key.to_i, val.to_i)
+      }
+    end
+  end
+
+  class TestDBM2 < Test::Unit::TestCase
     TMPROOT = "#{Dir.tmpdir}/ruby-dbm.#{$$}"
 
     def setup
diff --git a/test/gdbm/test_gdbm.rb b/test/gdbm/test_gdbm.rb
index c90f4a6074..920a78c548 100644
--- a/test/gdbm/test_gdbm.rb
+++ b/test/gdbm/test_gdbm.rb
@@ -1,5 +1,4 @@
-require 'test/unit/testsuite'
-require 'test/unit/testcase'
+require 'test/unit'
 
 begin
   require 'gdbm'
@@ -11,6 +10,633 @@ if defined? GDBM
   require 'fileutils'
 
   class TestGDBM < Test::Unit::TestCase
+    def TestGDBM.uname_s
+      require 'rbconfig'
+      case Config::CONFIG['host_os']
+      when 'cygwin'
+        require 'Win32API'
+        uname = Win32API.new('cygwin1', 'uname', 'P', 'I')
+        utsname = ' ' * 100
+        raise 'cannot get system name' if uname.call(utsname) == -1
+
+        utsname.unpack('A20' * 5)[0]
+      else
+        Config::CONFIG['host_os']
+      end
+    end
+    SYSTEM = uname_s
+
+    def setup
+      @path = "tmptest_gdbm_"
+      assert_instance_of(GDBM, @gdbm = GDBM.new(@path))
+
+      # prepare to make readonly GDBM file
+      GDBM.open("tmptest_gdbm_rdonly", 0400) {|gdbm|
+        gdbm['foo'] = 'FOO'
+      }
+      assert_instance_of(GDBM, @gdbm_rdonly = GDBM.new("tmptest_gdbm_rdonly", nil))
+    end
+    def teardown
+      assert_nil(@gdbm.close)
+      assert_nil(@gdbm_rdonly.close)
+      GC.start
+      File.delete *Dir.glob("tmptest_gdbm*").to_a
+      p Dir.glob("tmptest_gdbm*") if $DEBUG
+    end
+
+    def check_size(expect, gdbm=@gdbm)
+      assert_equal(expect, gdbm.size)
+      n = 0
+      gdbm.each { n+=1 }
+      assert_equal(expect, n)
+      if expect == 0
+        assert_equal(true, gdbm.empty?)
+      else
+        assert_equal(false, gdbm.empty?)
+      end
+    end
+
+    def test_s_new_has_no_block
+      # GDBM.new ignore the block
+      foo = true
+      assert_instance_of(GDBM, gdbm = GDBM.new("tmptest_gdbm") { foo = false })
+      assert_equal(foo, true)
+      assert_nil(gdbm.close)
+    end
+    def test_s_open_create_new
+      return if /^CYGWIN_9/ =~ SYSTEM
+
+      save_mask = File.umask(0)
+      begin
+        assert_instance_of(GDBM, gdbm = GDBM.open("tmptest_gdbm"))
+        gdbm.close
+        assert_equal(File.stat("tmptest_gdbm").mode & 0777, 0666)
+        assert_instance_of(GDBM, gdbm = GDBM.open("tmptest_gdbm2", 0644))
+        gdbm.close
+        assert_equal(File.stat("tmptest_gdbm2").mode & 0777, 0644)
+      ensure
+        File.umask save_mask
+      end
+    end
+    def test_s_open_no_create
+      # this test is failed on libgdbm 1.8.0
+      assert_nil(gdbm = GDBM.open("tmptest_gdbm", nil))
+    ensure
+      gdbm.close if gdbm
+    end
+    def test_s_open_3rd_arg
+      assert_instance_of(GDBM, gdbm = GDBM.open("tmptest_gdbm", 0644,
+                                                GDBM::FAST))
+      gdbm.close
+
+      # gdbm 1.8.0 specific
+      if defined? GDBM::SYNC
+        assert_instance_of(GDBM, gdbm = GDBM.open("tmptest_gdbm", 0644,
+                                                  GDBM::SYNC))
+        gdbm.close
+      end
+      # gdbm 1.8.0 specific
+      if defined? GDBM::NOLOCK
+        assert_instance_of(GDBM, gdbm = GDBM.open("tmptest_gdbm", 0644,
+                                                  GDBM::NOLOCK))
+        gdbm.close
+      end
+    end
+    def test_s_open_with_block
+      assert_equal(GDBM.open("tmptest_gdbm") { :foo }, :foo)
+    end
+    def test_s_open_lock
+      fork() {
+        assert_instance_of(GDBM, gdbm  = GDBM.open("tmptest_gdbm", 0644))
+        sleep 2
+      }
+      begin
+        sleep 1
+        assert_raise(Errno::EWOULDBLOCK) {
+          begin
+            assert_instance_of(GDBM, gdbm2 = GDBM.open("tmptest_gdbm", 0644))
+          rescue Errno::EAGAIN, Errno::EACCES
+            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(GDBM, gdbm  = GDBM.open("tmptest_gdbm", 0644))
+      assert_raise(Errno::EWOULDBLOCK) {
+        begin
+          GDBM.open("tmptest_gdbm", 0644)
+        rescue Errno::EAGAIN
+          raise Errno::EWOULDBLOCK
+        end
+      }
+    end
+=end
+
+    def test_s_open_nolock
+      # gdbm 1.8.0 specific
+      if not defined? GDBM::NOLOCK
+        return
+      end
+
+      fork() {
+        assert_instance_of(GDBM, gdbm  = GDBM.open("tmptest_gdbm", 0644,
+                                                  GDBM::NOLOCK))
+        sleep 2
+      }
+      sleep 1
+      begin
+        gdbm2 = nil
+        assert_nothing_raised(Errno::EWOULDBLOCK, Errno::EAGAIN, Errno::EACCES) {
+          assert_instance_of(GDBM, gdbm2 = GDBM.open("tmptest_gdbm", 0644))
+        }
+      ensure
+        Process.wait
+        gdbm2.close if gdbm2
+      end
+
+      p Dir.glob("tmptest_gdbm*") if $DEBUG
+
+      fork() {
+        assert_instance_of(GDBM, gdbm  = GDBM.open("tmptest_gdbm", 0644))
+        sleep 2
+      }
+      begin
+        sleep 1
+        gdbm2 = nil
+        assert_nothing_raised(Errno::EWOULDBLOCK, Errno::EAGAIN, Errno::EACCES) {
+          # this test is failed on Cygwin98 (???)
+          assert_instance_of(GDBM, gdbm2 = GDBM.open("tmptest_gdbm", 0644,
+                                                     GDBM::NOLOCK))
+        }
+      ensure
+        Process.wait
+        gdbm2.close if gdbm2
+      end
+    end
+
+    def test_s_open_error
+      assert_instance_of(GDBM, gdbm = GDBM.open("tmptest_gdbm", 0))
+      assert_raise(Errno::EACCES) {
+        GDBM.open("tmptest_gdbm", 0)
+      }
+      gdbm.close
+    end
+
+    def test_close
+      assert_instance_of(GDBM, gdbm = GDBM.open("tmptest_gdbm"))
+      assert_nil(gdbm.close)
+
+      # closed GDBM file
+      assert_raise(RuntimeError) { gdbm.close }
+    end
+
+    def test_aref
+      assert_equal('bar', @gdbm['foo'] = 'bar')
+      assert_equal('bar', @gdbm['foo'])
+
+      assert_nil(@gdbm['bar'])
+    end
+
+    def test_fetch
+      assert_equal('bar', @gdbm['foo']='bar')
+      assert_equal('bar', @gdbm.fetch('foo'))
+
+      # key not found
+      assert_raise(IndexError) {
+        @gdbm.fetch('bar')
+      }
+
+      # test for `ifnone' arg
+      assert_equal('baz', @gdbm.fetch('bar', 'baz'))
+
+      # test for `ifnone' block
+      assert_equal('foobar', @gdbm.fetch('bar') {|key| 'foo' + key })
+    end
+
+    def test_aset
+      num = 0
+      2.times {|i|
+        assert_equal('foo', @gdbm['foo'] = 'foo')
+        assert_equal('foo', @gdbm['foo'])
+        assert_equal('bar', @gdbm['foo'] = 'bar')
+        assert_equal('bar', @gdbm['foo'])
+
+        num += 1 if i == 0
+        assert_equal(num, @gdbm.size)
+
+        # assign nil
+        assert_equal('', @gdbm['bar'] = '')
+        assert_equal('', @gdbm['bar'])
+
+        num += 1 if i == 0
+        assert_equal(num, @gdbm.size)
+
+        # empty string
+        assert_equal('', @gdbm[''] = '')
+        assert_equal('', @gdbm[''])
+
+        num += 1 if i == 0
+        assert_equal(num, @gdbm.size)
+
+        # Fixnum
+        assert_equal('200', @gdbm['100'] = '200')
+        assert_equal('200', @gdbm['100'])
+
+        num += 1 if i == 0
+        assert_equal(num, @gdbm.size)
+
+        # Big key and value
+        assert_equal('y' * 100, @gdbm['x' * 100] = 'y' * 100)
+        assert_equal('y' * 100, @gdbm['x' * 100])
+
+        num += 1 if i == 0
+        assert_equal(num, @gdbm.size)
+      }
+    end
+
+    def test_index
+      assert_equal('bar', @gdbm['foo'] = 'bar')
+      assert_equal('foo', @gdbm.index('bar'))
+      assert_nil(@gdbm['bar'])
+    end
+
+    def test_values_at
+      keys = %w(foo bar baz)
+      values = %w(FOO BAR BAZ)
+      @gdbm[keys[0]], @gdbm[keys[1]], @gdbm[keys[2]] = values
+      assert_equal(values.reverse, @gdbm.values_at(*keys.reverse))
+    end
+
+    def test_select_with_block
+      keys = %w(foo bar baz)
+      values = %w(FOO BAR BAZ)
+      @gdbm[keys[0]], @gdbm[keys[1]], @gdbm[keys[2]] = values
+      ret = @gdbm.select {|k,v|
+        assert_equal(k.upcase, v)
+        k != "bar"
+      }
+      assert_equal([['baz', 'BAZ'], ['foo', 'FOO']],
+                    ret.sort)
+    end
+
+    def test_length
+      num = 10
+      assert_equal(0, @gdbm.size)
+      num.times {|i|
+        i = i.to_s
+        @gdbm[i] = i
+      }
+      assert_equal(num, @gdbm.size)
+
+      @gdbm.shift
+
+      assert_equal(num - 1, @gdbm.size)
+    end
+
+    def test_empty?
+      assert_equal(true, @gdbm.empty?)
+      @gdbm['foo'] = 'FOO'
+      assert_equal(false, @gdbm.empty?)
+    end
+
+    def test_each_pair
+      n = 0
+      @gdbm.each_pair { n += 1 }
+      assert_equal(0, n)
+
+      keys = %w(foo bar baz)
+      values = %w(FOO BAR BAZ)
+
+      @gdbm[keys[0]], @gdbm[keys[1]], @gdbm[keys[2]] = values
+
+      n = 0
+      ret = @gdbm.each_pair {|key, val|
+        assert_not_nil(i = keys.index(key))
+        assert_equal(val, values[i])
+
+        n += 1
+      }
+      assert_equal(keys.size, n)
+      assert_equal(@gdbm, ret)
+    end
+
+    def test_each_value
+      n = 0
+      @gdbm.each_value { n += 1 }
+      assert_equal(0, n)
+
+      keys = %w(foo bar baz)
+      values = %w(FOO BAR BAZ)
+
+      @gdbm[keys[0]], @gdbm[keys[1]], @gdbm[keys[2]] = values
+
+      n = 0
+      ret = @gdbm.each_value {|val|
+        assert_not_nil(key = @gdbm.index(val))
+        assert_not_nil(i = keys.index(key))
+        assert_equal(val, values[i])
+
+        n += 1
+      }
+      assert_equal(keys.size, n)
+      assert_equal(@gdbm, ret)
+    end
+
+    def test_each_key
+      n = 0
+      @gdbm.each_key { n += 1 }
+      assert_equal(0, n)
+
+      keys = %w(foo bar baz)
+      values = %w(FOO BAR BAZ)
+
+      @gdbm[keys[0]], @gdbm[keys[1]], @gdbm[keys[2]] = values
+
+      n = 0
+      ret = @gdbm.each_key {|key|
+        assert_not_nil(i = keys.index(key))
+        assert_equal(@gdbm[key], values[i])
+
+        n += 1
+      }
+      assert_equal(keys.size, n)
+      assert_equal(@gdbm, ret)
+    end
+
+    def test_keys
+      assert_equal([], @gdbm.keys)
+
+      keys = %w(foo bar baz)
+      values = %w(FOO BAR BAZ)
+
+      @gdbm[keys[0]], @gdbm[keys[1]], @gdbm[keys[2]] = values
+
+      assert_equal(keys.sort, @gdbm.keys.sort)
+      assert_equal(values.sort, @gdbm.values.sort)
+    end
+
+    def test_values
+      test_keys
+    end
+
+    def test_shift
+      assert_nil(@gdbm.shift)
+      assert_equal(0, @gdbm.size)
+
+      keys = %w(foo bar baz)
+      values = %w(FOO BAR BAZ)
+
+      @gdbm[keys[0]], @gdbm[keys[1]], @gdbm[keys[2]] = values
+
+      ret_keys = []
+      ret_values = []
+      while ret = @gdbm.shift
+        ret_keys.push ret[0]
+        ret_values.push ret[1]
+
+        assert_equal(keys.size - ret_keys.size, @gdbm.size)
+      end
+
+      assert_equal(keys.sort, ret_keys.sort)
+      assert_equal(values.sort, ret_values.sort)
+    end
+
+    def test_delete
+      keys = %w(foo bar baz)
+      values = %w(FOO BAR BAZ)
+      key = keys[1]
+
+      assert_nil(@gdbm.delete(key))
+      assert_equal(0, @gdbm.size)
+
+      @gdbm[keys[0]], @gdbm[keys[1]], @gdbm[keys[2]] = values
+
+      assert_equal('BAR', @gdbm.delete(key))
+      assert_nil(@gdbm[key])
+      assert_equal(2, @gdbm.size)
+
+      assert_nil(@gdbm.delete(key))
+
+      if /^CYGWIN_9/ !~ SYSTEM
+        assert_raise(GDBMError) {
+          @gdbm_rdonly.delete("foo")
+        }
+
+        assert_nil(@gdbm_rdonly.delete("bar"))
+      end
+    end
+    def test_delete_with_block
+      key = 'no called block'
+      @gdbm[key] = 'foo'
+      assert_equal('foo', @gdbm.delete(key) {|k| k.replace 'called block'})
+      assert_equal('no called block', key)
+      assert_equal(0, @gdbm.size)
+
+      key = 'no called block'
+      assert_equal(:blockval,
+                    @gdbm.delete(key) {|k| k.replace 'called block'; :blockval})
+      assert_equal('called block', key)
+      assert_equal(0, @gdbm.size)
+    end
+
+    def test_delete_if
+      v = "0"
+      100.times {@gdbm[v] = v; v = v.next}
+
+      ret = @gdbm.delete_if {|key, val| key.to_i < 50}
+      assert_equal(@gdbm, ret)
+      check_size(50, @gdbm)
+
+      ret = @gdbm.delete_if {|key, val| key.to_i >= 50}
+      assert_equal(@gdbm, ret)
+      check_size(0, @gdbm)
+
+      # break
+      v = "0"
+      100.times {@gdbm[v] = v; v = v.next}
+      check_size(100, @gdbm)
+      n = 0;
+      @gdbm.delete_if {|key, val|
+        break if n > 50
+        n+=1
+        true
+      }
+      assert_equal(51, n)
+      check_size(49, @gdbm)
+
+      @gdbm.clear
+
+      # raise
+      v = "0"
+      100.times {@gdbm[v] = v; v = v.next}
+      check_size(100, @gdbm)
+      n = 0;
+      begin
+        @gdbm.delete_if {|key, val|
+          raise "runtime error" if n > 50
+          n+=1
+          true
+        }
+      rescue
+      end
+      assert_equal(51, n)
+      check_size(49, @gdbm)
+    end
+
+    def test_reject
+      v = "0"
+      100.times {@gdbm[v] = v; v = v.next}
+
+      hash = @gdbm.reject {|key, val| key.to_i < 50}
+      assert_instance_of(Hash, hash)
+      assert_equal(100, @gdbm.size)
+
+      assert_equal(50, hash.size)
+      hash.each_pair {|key,val|
+        assert_equal(false, key.to_i < 50)
+        assert_equal(key, val)
+      }
+
+      hash = @gdbm.reject {|key, val| key.to_i < 100}
+      assert_instance_of(Hash, hash)
+      assert_equal(true, hash.empty?)
+    end
+
+    def test_clear
+      v = "1"
+      100.times {v = v.next; @gdbm[v] = v}
+
+      assert_equal(@gdbm, @gdbm.clear)
+
+      # validate GDBM#size
+      i = 0
+      @gdbm.each { i += 1 }
+      assert_equal(@gdbm.size, i)
+      assert_equal(0, i)
+    end
+
+    def test_invert
+      v = "0"
+      100.times {@gdbm[v] = v; v = v.next}
+
+      hash = @gdbm.invert
+      assert_instance_of(Hash, hash)
+      assert_equal(100, hash.size)
+      hash.each_pair {|key, val|
+        assert_equal(key.to_i, val.to_i)
+      }
+    end
+
+    def test_update
+      hash = {}
+      v = "0"
+      100.times {v = v.next; hash[v] = v}
+
+      @gdbm["101"] = "101"
+      @gdbm.update hash
+      assert_equal(101, @gdbm.size)
+      @gdbm.each_pair {|key, val|
+        assert_equal(key.to_i, val.to_i)
+      }
+    end
+
+    def test_replace
+      hash = {}
+      v = "0"
+      100.times {v = v.next; hash[v] = v}
+
+      @gdbm["101"] = "101"
+      @gdbm.replace hash
+      assert_equal(100, @gdbm.size)
+      @gdbm.each_pair {|key, val|
+        assert_equal(key.to_i, val.to_i)
+      }
+    end
+
+    def test_reorganize
+      size1 = File.size(@path)
+      i = "1"
+      1000.times {i = i.next; @gdbm[i] = i}
+      @gdbm.clear
+      @gdbm.sync
+
+      size2 = File.size(@path)
+      @gdbm.reorganize
+      size3 = File.size(@path)
+
+      # p [size1, size2, size3]
+      assert_equal(true, size1 < size2)
+      # this test is failed on Cygwin98. `GDBM version 1.8.0, as of May 19, 1999'
+      assert_equal(true, size3 < size2)
+      assert_equal(size1, size3)
+    end
+
+    def test_sync
+      assert_instance_of(GDBM, gdbm = GDBM.open('tmptest_gdbm', 0666, GDBM::FAST))
+      assert_equal(gdbm.sync, gdbm)
+      gdbm.close
+      assert_instance_of(GDBM, gdbm = GDBM.open('tmptest_gdbm', 0666))
+      assert_equal(gdbm.sync, gdbm)
+      gdbm.close
+    end
+
+    def test_cachesize=
+        assert_equal(@gdbm.cachesize = 1024, 1024)
+    end
+
+    def test_fastmode=
+        assert_equal(@gdbm.fastmode = true, true)
+    end
+
+    def test_syncmode=
+        assert_equal(@gdbm.syncmode = true, true)
+    end
+
+    def test_haskey?
+      assert_equal('bar', @gdbm['foo']='bar')
+      assert_equal(true,  @gdbm.has_key?('foo'))
+      assert_equal(false, @gdbm.has_key?('bar'))
+    end
+
+    def test_has_value?
+      assert_equal('bar', @gdbm['foo']='bar')
+      assert_equal(true,  @gdbm.has_value?('bar'))
+      assert_equal(false, @gdbm.has_value?('foo'))
+    end
+
+    def test_to_a
+      v = "0"
+      100.times {v = v.next; @gdbm[v] = v}
+
+      ary = @gdbm.to_a
+      assert_instance_of(Array, ary)
+      assert_equal(100, ary.size)
+      ary.each {|key,val|
+        assert_equal(key.to_i, val.to_i)
+      }
+    end
+
+    def test_to_hash
+      v = "0"
+      100.times {v = v.next; @gdbm[v] = v}
+
+      hash = @gdbm.to_hash
+      assert_instance_of(Hash, hash)
+      assert_equal(100, hash.size)
+      hash.each {|key,val|
+        assert_equal(key.to_i, val.to_i)
+      }
+    end
+  end
+
+  class TestGDBM2 < Test::Unit::TestCase
     TMPROOT = "#{Dir.tmpdir}/ruby-gdbm.#{$$}"
 
     def setup