Index: test/test_zlib.rb
===================================================================
--- test/test_zlib.rb	(revision 8313)
+++ test/test_zlib.rb	(working copy)
@@ -113,4 +113,30 @@
     assert_equal("hello\n", gin.gets)
     gin.close
   end
+
+  def test_each_line
+    @filename = "____temp_zlib_file";
+    Zlib::GzipWriter.open(@filename) { |z| z.write "hello\nworld\n" }
+
+    lines = []
+    gin = Zlib::GzipReader.open(@filename)
+    gin.each_line do |line|
+      lines << line
+    end
+    assert_equal("hello\n", lines.first)
+    assert_equal("world\n", lines.last)
+  end
+
+  def test_each
+    @filename = "____temp_zlib_file";
+    Zlib::GzipWriter.open(@filename) { |z| z.write "hello\nworld\n" }
+
+    lines = []
+    gin = Zlib::GzipReader.open(@filename)
+    gin.each do |line|
+      lines << line
+    end
+    assert_equal("hello\n", lines.first)
+    assert_equal("world\n", lines.last)
+  end
 end