* test/zlib/test_zlib.rb: add tests to achieve over 90% test coverage

of zlib.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@17020 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

ChangeLog

@@ -1,3 +1,8 @@
+Sun Jun  8 21:50:27 2008  Yusuke Endoh  <mame@tsg.ne.jp>
+
+	* test/zlib/test_zlib.rb: add tests to achieve over 90% test coverage
+	  of zlib.
+
 Sun Jun  8 20:12:47 2008  wanabe  <s.wanabe@gmail.com>
 
 	* vm_insnhelper.c (vm_throw): regard break as return in lambda.

test/zlib/test_zlib.rb

@@ -1,6 +1,6 @@
-require 'test/unit/testsuite'
-require 'test/unit/testcase'
+require 'test/unit'
 require 'stringio'
+require 'tempfile'
 
 begin
   require 'zlib'
@@ -8,6 +8,354 @@ rescue LoadError
 end
 
 if defined? Zlib
+  class TestZlibDeflate < Test::Unit::TestCase
+    def test_initialize
+      z = Zlib::Deflate.new
+      s = z.deflate("foo", Zlib::FINISH)
+      assert_equal("foo", Zlib::Inflate.inflate(s))
+
+      z = Zlib::Deflate.new
+      s = z.deflate("foo")
+      s << z.deflate(nil, Zlib::FINISH)
+      assert_equal("foo", Zlib::Inflate.inflate(s))
+
+      assert_raise(Zlib::StreamError) { Zlib::Deflate.new(10000) }
+    end
+
+    def test_dup
+      z1 = Zlib::Deflate.new
+      s = z1.deflate("foo")
+      z2 = z1.dup
+      s1 = s + z1.deflate("bar", Zlib::FINISH)
+      s2 = s + z2.deflate("baz", Zlib::FINISH)
+      assert_equal("foobar", Zlib::Inflate.inflate(s1))
+      assert_equal("foobaz", Zlib::Inflate.inflate(s2))
+    end
+
+    def test_deflate
+      s = Zlib::Deflate.deflate("foo")
+      assert_equal("foo", Zlib::Inflate.inflate(s))
+
+      assert_raise(Zlib::StreamError) { Zlib::Deflate.deflate("foo", 10000) }
+    end
+
+    def test_addstr
+      z = Zlib::Deflate.new
+      z << "foo"
+      s = z.deflate(nil, Zlib::FINISH)
+      assert_equal("foo", Zlib::Inflate.inflate(s))
+    end
+
+    def test_flush
+      z = Zlib::Deflate.new
+      z << "foo"
+      s = z.flush
+      z << "bar"
+      s << z.flush_next_in
+      z << "baz"
+      s << z.flush_next_out
+      s << z.deflate("qux", Zlib::FINISH)
+      assert_equal("foobarbazqux", Zlib::Inflate.inflate(s))
+    end
+
+    def test_avail
+      z = Zlib::Deflate.new
+      assert_equal(0, z.avail_in)
+      assert_equal(0, z.avail_out)
+      z << "foo"
+      z.avail_out += 100
+      z << "bar"
+      s = z.finish
+      assert_equal("foobar", Zlib::Inflate.inflate(s))
+    end
+
+    def test_total
+      z = Zlib::Deflate.new
+      1000.times { z << "foo" }
+      s = z.finish
+      assert_equal(3000, z.total_in)
+      assert_operator(3000, :>, z.total_out)
+      assert_equal("foo" * 1000, Zlib::Inflate.inflate(s))
+    end
+
+    def test_data_type
+      z = Zlib::Deflate.new
+      assert([Zlib::ASCII, Zlib::BINARY, Zlib::UNKNOWN].include?(z.data_type))
+    end
+
+    def test_adler
+      z = Zlib::Deflate.new
+      z << "foo"
+      s = z.finish
+      assert_equal(0x02820145, z.adler)
+    end
+
+    def test_finished_p
+      z = Zlib::Deflate.new
+      assert_equal(false, z.finished?)
+      z << "foo"
+      assert_equal(false, z.finished?)
+      s = z.finish
+      assert_equal(true, z.finished?)
+      z.close
+      assert_raise(Zlib::Error) { z.finished? }
+    end
+
+    def test_closed_p
+      z = Zlib::Deflate.new
+      assert_equal(false, z.closed?)
+      z << "foo"
+      assert_equal(false, z.closed?)
+      s = z.finish
+      assert_equal(false, z.closed?)
+      z.close
+      assert_equal(true, z.closed?)
+    end
+
+    def test_params
+      z = Zlib::Deflate.new
+      z << "foo"
+      z.params(Zlib::DEFAULT_COMPRESSION, Zlib::DEFAULT_STRATEGY)
+      z << "bar"
+      s = z.finish
+      assert_equal("foobar", Zlib::Inflate.inflate(s))
+
+      z = Zlib::Deflate.new
+      s = z.deflate("foo", Zlib::FULL_FLUSH)
+      z.avail_out = 0
+      z.params(Zlib::NO_COMPRESSION, Zlib::FILTERED)
+      s << z.deflate("bar", Zlib::FULL_FLUSH)
+      z.avail_out = 0
+      z.params(Zlib::BEST_COMPRESSION, Zlib::HUFFMAN_ONLY)
+      s << z.deflate("baz", Zlib::FINISH)
+      assert_equal("foobarbaz", Zlib::Inflate.inflate(s))
+
+      z = Zlib::Deflate.new
+      assert_raise(Zlib::StreamError) { z.params(10000, 10000) }
+    end
+
+    def test_set_dictionary
+      z = Zlib::Deflate.new
+      z.set_dictionary("foo")
+      s = z.deflate("foo" * 100, Zlib::FINISH)
+      z = Zlib::Inflate.new
+      assert_raise(Zlib::NeedDict) { z.inflate(s) }
+      z.set_dictionary("foo")
+      assert_equal("foo" * 100, z.inflate(s)) # ???
+
+      z = Zlib::Deflate.new
+      z << "foo"
+      assert_raise(Zlib::StreamError) { z.set_dictionary("foo") }
+      z.close # without this, outputs `zlib(finalizer): the stream was freed prematurely.'
+    end
+
+    def test_reset
+      z = Zlib::Deflate.new
+      z << "foo"
+      z.reset
+      z << "bar"
+      s = z.finish
+      assert_equal("bar", Zlib::Inflate.inflate(s))
+    end
+
+    def test_close
+      z = Zlib::Deflate.new
+      z.close
+      assert_raise(Zlib::Error) { z << "foo" }
+      assert_raise(Zlib::Error) { z.reset }
+    end
+  end
+
+  class TestZlibInflate < Test::Unit::TestCase
+    def test_initialize
+      assert_raise(Zlib::StreamError) { Zlib::Inflate.new(-1) }
+
+      s = Zlib::Deflate.deflate("foo")
+      z = Zlib::Inflate.new
+      z << s << nil
+      assert_equal("foo", z.finish)
+    end
+
+    def test_inflate
+      s = Zlib::Deflate.deflate("foo")
+      z = Zlib::Inflate.new
+      s = z.inflate(s)
+      s << z.inflate(nil)
+      assert_equal("foo", s)
+      z.inflate("foo") # ???
+      z << "foo" # ???
+    end
+
+    def test_sync
+      z = Zlib::Deflate.new
+      s = z.deflate("foo" * 1000, Zlib::FULL_FLUSH)
+      z.avail_out = 0
+      z.params(Zlib::NO_COMPRESSION, Zlib::FILTERED)
+      s << z.deflate("bar" * 1000, Zlib::FULL_FLUSH)
+      z.avail_out = 0
+      z.params(Zlib::BEST_COMPRESSION, Zlib::HUFFMAN_ONLY)
+      s << z.deflate("baz" * 1000, Zlib::FINISH)
+
+      z = Zlib::Inflate.new
+      assert_raise(Zlib::DataError) { z << "\0" * 100 }
+      assert_equal(false, z.sync(""))
+      assert_equal(false, z.sync_point?)
+
+      z = Zlib::Inflate.new
+      assert_raise(Zlib::DataError) { z << "\0" * 100 + s }
+      assert_equal(true, z.sync(""))
+      #assert_equal(true, z.sync_point?)
+
+      z = Zlib::Inflate.new
+      assert_equal(false, z.sync("\0" * 100))
+      assert_equal(false, z.sync_point?)
+
+      z = Zlib::Inflate.new
+      assert_equal(true, z.sync("\0" * 100 + s))
+      #assert_equal(true, z.sync_point?)
+    end
+
+    def test_set_dictionary
+      z = Zlib::Inflate.new
+      assert_raise(Zlib::StreamError) { z.set_dictionary("foo") }
+      z.close
+    end
+  end
+
+  class TestZlibGzipFile < Test::Unit::TestCase
+    def test_to_io
+      t = Tempfile.new("test_zlib_gzip_file")
+      t.close
+      Zlib::GzipWriter.open(t.path) {|gz| gz.print("foo") }
+
+      f = Zlib::GzipReader.open(t.path)
+      assert_kind_of(IO, f.to_io)
+    end
+
+    def test_crc
+      t = Tempfile.new("test_zlib_gzip_file")
+      t.close
+      Zlib::GzipWriter.open(t.path) {|gz| gz.print("foo") }
+
+      f = Zlib::GzipReader.open(t.path)
+      f.read
+      assert_equal(0x8c736521, f.crc)
+    end
+
+    def test_mtime
+      tim = Time.now
+
+      t = Tempfile.new("test_zlib_gzip_file")
+      t.close
+      Zlib::GzipWriter.open(t.path) do |gz|
+        gz.mtime = -1
+        gz.mtime = tim
+        gz.print("foo")
+        gz.flush
+        assert_raise(Zlib::GzipFile::Error) { gz.mtime = Time.now }
+      end
+
+      f = Zlib::GzipReader.open(t.path)
+      assert_equal(tim.to_i, f.mtime.to_i)
+    end
+
+    def test_level
+      t = Tempfile.new("test_zlib_gzip_file")
+      t.close
+      Zlib::GzipWriter.open(t.path) {|gz| gz.print("foo") }
+
+      f = Zlib::GzipReader.open(t.path)
+      assert_equal(Zlib::DEFAULT_COMPRESSION, f.level)
+    end
+
+    def test_os_code
+      t = Tempfile.new("test_zlib_gzip_file")
+      t.close
+      Zlib::GzipWriter.open(t.path) {|gz| gz.print("foo") }
+
+      f = Zlib::GzipReader.open(t.path)
+      assert_equal(Zlib::OS_CODE, f.os_code)
+    end
+
+    def test_orig_name
+      t = Tempfile.new("test_zlib_gzip_file")
+      t.close
+      Zlib::GzipWriter.open(t.path) do |gz|
+        gz.orig_name = "foobarbazqux\0quux"
+        gz.print("foo")
+        gz.flush
+        assert_raise(Zlib::GzipFile::Error) { gz.orig_name = "quux" }
+      end
+
+      f = Zlib::GzipReader.open(t.path)
+      assert_equal("foobarbazqux", f.orig_name)
+    end
+
+    def test_comment
+      t = Tempfile.new("test_zlib_gzip_file")
+      t.close
+      Zlib::GzipWriter.open(t.path) do |gz|
+        gz.comment = "foobarbazqux\0quux"
+        gz.print("foo")
+        gz.flush
+        assert_raise(Zlib::GzipFile::Error) { gz.comment = "quux" }
+      end
+
+      f = Zlib::GzipReader.open(t.path)
+      assert_equal("foobarbazqux", f.comment)
+    end
+
+    def test_lineno
+      t = Tempfile.new("test_zlib_gzip_file")
+      t.close
+      Zlib::GzipWriter.open(t.path) {|gz| gz.print("foo\nbar\nbaz\nqux\n") }
+
+      f = Zlib::GzipReader.open(t.path)
+      assert_equal([0, "foo\n"], [f.lineno, f.gets])
+      assert_equal([1, "bar\n"], [f.lineno, f.gets])
+      f.lineno = 1000
+      assert_equal([1000, "baz\n"], [f.lineno, f.gets])
+      assert_equal([1001, "qux\n"], [f.lineno, f.gets])
+    end
+
+    def test_closed_p
+      t = Tempfile.new("test_zlib_gzip_file")
+      t.close
+      Zlib::GzipWriter.open(t.path) {|gz| gz.print("foo") }
+
+      f = Zlib::GzipReader.open(t.path)
+      assert_equal(false, f.closed?)
+      f.read
+      assert_equal(false, f.closed?)
+      f.close
+      assert_equal(true, f.closed?)
+    end
+
+    def test_sync
+      t = Tempfile.new("test_zlib_gzip_file")
+      t.close
+      Zlib::GzipWriter.open(t.path) {|gz| gz.print("foo") }
+
+      f = Zlib::GzipReader.open(t.path)
+      f.sync = true
+      assert_equal(true, f.sync)
+      f.read
+      f.sync = false
+      assert_equal(false, f.sync)
+      f.close
+    end
+
+    def test_pos
+      t = Tempfile.new("test_zlib_gzip_file")
+      t.close
+      Zlib::GzipWriter.open(t.path) do |gz|
+        gz.print("foo")
+        gz.flush
+        assert_equal(3, gz.tell)
+      end
+    end
+  end
+
   class TestZlibGzipReader < Test::Unit::TestCase
     D0 = "\037\213\010\000S`\017A\000\003\003\000\000\000\000\000\000\000\000\000"
     def test_read0
@@ -42,6 +390,161 @@ if defined? Zlib
         r.close
       }
     end
+
+    def test_open
+      t = Tempfile.new("test_zlib_gzip_reader")
+      t.close
+      Zlib::GzipWriter.open(t.path) {|gz| gz.print("foo") }
+
+      assert_raise(ArgumentError) { Zlib::GzipReader.open }
+
+      assert_equal("foo", Zlib::GzipReader.open(t.path) {|gz| gz.read })
+
+      f = Zlib::GzipReader.open(t.path)
+      assert_equal("foo", f.read)
+      f.close
+    end
+
+    def test_rewind
+      t = Tempfile.new("test_zlib_gzip_reader")
+      t.close
+      Zlib::GzipWriter.open(t.path) {|gz| gz.print("foo") }
+
+      f = Zlib::GzipReader.open(t.path)
+      assert_equal("foo", f.read)
+      f.rewind
+      assert_equal("foo", f.read)
+      f.close
+    end
+
+    def test_unused
+      t = Tempfile.new("test_zlib_gzip_reader")
+      t.close
+      Zlib::GzipWriter.open(t.path) {|gz| gz.print("foobar") }
+
+      f = Zlib::GzipReader.open(t.path)
+      assert_equal("foo", f.read(3))
+      f.unused
+      assert_equal("bar", f.read)
+      f.unused
+      f.close
+    end
+
+    def test_read
+      t = Tempfile.new("test_zlib_gzip_reader")
+      t.close
+      Zlib::GzipWriter.open(t.path) {|gz| gz.print("foobar") }
+
+      f = Zlib::GzipReader.open(t.path)
+      assert_raise(ArgumentError) { f.read(-1) }
+    end
+
+    def test_readpartial
+      t = Tempfile.new("test_zlib_gzip_reader")
+      t.close
+      Zlib::GzipWriter.open(t.path) {|gz| gz.print("foobar") }
+
+      f = Zlib::GzipReader.open(t.path)
+      assert("foo".start_with?(f.readpartial(3)))
+
+      f = Zlib::GzipReader.open(t.path)
+      s = ""
+      f.readpartial(3, s)
+      assert("foo".start_with?(s))
+
+      assert_raise(ArgumentError) { f.readpartial(-1) }
+    end
+
+    def test_getc
+      t = Tempfile.new("test_zlib_gzip_reader")
+      t.close
+      Zlib::GzipWriter.open(t.path) {|gz| gz.print("foobar") }
+
+      f = Zlib::GzipReader.open(t.path)
+      "foobar".each_byte {|c| assert_equal(c, f.getc) }
+      assert_nil(f.getc)
+    end
+
+    def test_readchar
+      t = Tempfile.new("test_zlib_gzip_reader")
+      t.close
+      Zlib::GzipWriter.open(t.path) {|gz| gz.print("foobar") }
+
+      f = Zlib::GzipReader.open(t.path)
+      "foobar".each_byte {|c| assert_equal(c, f.readchar) }
+      assert_raise(EOFError) { f.readchar }
+    end
+
+    def test_each_byte
+      t = Tempfile.new("test_zlib_gzip_reader")
+      t.close
+      Zlib::GzipWriter.open(t.path) {|gz| gz.print("foobar") }
+
+      f = Zlib::GzipReader.open(t.path)
+      a = []
+      f.each_byte {|c| a << c }
+      assert_equal("foobar".each_byte.to_a, a)
+    end
+
+    def test_gets
+      t = Tempfile.new("test_zlib_gzip_reader")
+      t.close
+      Zlib::GzipWriter.open(t.path) {|gz| gz.print("foo\nbar\nbaz\n") }
+
+      f = Zlib::GzipReader.open(t.path)
+      assert_equal("foo\n", f.gets)
+      assert_equal("bar\n", f.gets)
+      assert_equal("baz\n", f.gets)
+      assert_nil(f.gets)
+      f.close
+
+      f = Zlib::GzipReader.open(t.path)
+      assert_equal("foo\nbar\nbaz\n", f.gets(nil))
+      f.close
+    end
+
+    def test_gets
+      t = Tempfile.new("test_zlib_gzip_reader")
+      t.close
+      Zlib::GzipWriter.open(t.path) {|gz| gz.print("foo\nbar\nbaz\n") }
+
+      f = Zlib::GzipReader.open(t.path)
+      assert_equal("foo\n", f.readline)
+      assert_equal("bar\n", f.readline)
+      assert_equal("baz\n", f.readline)
+      assert_raise(EOFError) { f.readline }
+      f.close
+    end
+
+    def test_each
+      t = Tempfile.new("test_zlib_gzip_reader")
+      t.close
+      Zlib::GzipWriter.open(t.path) {|gz| gz.print("foo\nbar\nbaz\n") }
+
+      f = Zlib::GzipReader.open(t.path)
+      a = ["foo\n", "bar\n", "baz\n"]
+      f.each {|l| assert_equal(a.shift, l) }
+      f.close
+    end
+
+    def test_readlines
+      t = Tempfile.new("test_zlib_gzip_reader")
+      t.close
+      Zlib::GzipWriter.open(t.path) {|gz| gz.print("foo\nbar\nbaz\n") }
+
+      f = Zlib::GzipReader.open(t.path)
+      assert_equal(["foo\n", "bar\n", "baz\n"], f.readlines)
+      f.close
+    end
+
+    def test_reader_wrap
+      t = Tempfile.new("test_zlib_gzip_reader")
+      t.close
+      Zlib::GzipWriter.open(t.path) {|gz| gz.print("foo") }
+      f = open(t.path)
+      assert_equal("foo", Zlib::GzipReader.wrap(f) {|gz| gz.read })
+      assert_raise(IOError) { f.close }
+    end
   end
 
   class TestZlibGzipWriter < Test::Unit::TestCase
@@ -51,5 +554,76 @@ if defined? Zlib
       assert_raise(NoMethodError, "[ruby-dev:23344]") { Zlib::GzipWriter.new(0).close }
       assert_raise(NoMethodError, "[ruby-dev:23344]") { Zlib::GzipWriter.new(:hoge).close }
     end
+
+    def test_open
+      assert_raise(ArgumentError) { Zlib::GzipWriter.open }
+
+      t = Tempfile.new("test_zlib_gzip_writer")
+      t.close
+      Zlib::GzipWriter.open(t.path) {|gz| gz.print("foo") }
+      assert_equal("foo", Zlib::GzipReader.open(t.path) {|gz| gz.read })
+
+      f = Zlib::GzipWriter.open(t.path)
+      f.print("bar")
+      f.close
+      assert_equal("bar", Zlib::GzipReader.open(t.path) {|gz| gz.read })
+
+      assert_raise(Zlib::StreamError) { Zlib::GzipWriter.open(t.path, 10000) }
+    end
+
+    def test_write
+      t = Tempfile.new("test_zlib_gzip_writer")
+      t.close
+      Zlib::GzipWriter.open(t.path) {|gz| gz.print("foo") }
+      assert_equal("foo", Zlib::GzipReader.open(t.path) {|gz| gz.read })
+
+      o = Object.new
+      def o.to_s; "bar"; end
+      Zlib::GzipWriter.open(t.path) {|gz| gz.print(o) }
+      assert_equal("bar", Zlib::GzipReader.open(t.path) {|gz| gz.read })
+    end
+
+    def test_putc
+      t = Tempfile.new("test_zlib_gzip_writer")
+      t.close
+      Zlib::GzipWriter.open(t.path) {|gz| gz.putc(?x) }
+      assert_equal("x", Zlib::GzipReader.open(t.path) {|gz| gz.read })
+
+      # todo: multibyte char
+    end
+
+    def test_writer_wrap
+      t = Tempfile.new("test_zlib_gzip_writer")
+      Zlib::GzipWriter.wrap(t) {|gz| gz.print("foo") }
+      t.close
+      assert_equal("foo", Zlib::GzipReader.open(t.path) {|gz| gz.read })
+    end
+  end
+
+  class TestZlib < Test::Unit::TestCase
+    def test_version
+      assert_instance_of(String, Zlib.zlib_version)
+      assert(Zlib.zlib_version.tainted?)
+    end
+
+    def test_adler32
+      assert_equal(0x00000001, Zlib.adler32)
+      assert_equal(0x02820145, Zlib.adler32("foo"))
+      assert_equal(0x02820145, Zlib.adler32("o", Zlib.adler32("fo")))
+      assert_equal(0x8a62c964, Zlib.adler32("abc\x01\x02\x03" * 10000))
+    end
+
+    def test_crc32
+      assert_equal(0x00000000, Zlib.crc32)
+      assert_equal(0x8c736521, Zlib.crc32("foo"))
+      assert_equal(0x8c736521, Zlib.crc32("o", Zlib.crc32("fo")))
+      assert_equal(0x07f0d68f, Zlib.crc32("abc\x01\x02\x03" * 10000))
+    end
+
+    def test_crc_table
+      t = Zlib.crc_table
+      assert_instance_of(Array, t)
+      t.each {|x| assert_kind_of(Integer, x) }
+    end
   end
 end