1 files changed, 45 insertions, 2 deletions
diff --git a/spec/ruby/library/zlib/gzipreader/each_spec.rb b/spec/ruby/library/zlib/gzipreader/each_spec.rb
index 3b98391a87..75fd7e6bae 100644
--- a/spec/ruby/library/zlib/gzipreader/each_spec.rb
+++ b/spec/ruby/library/zlib/gzipreader/each_spec.rb
@@ -1,6 +1,49 @@
 require_relative "../../../spec_helper"
-require_relative 'shared/each'
+require 'stringio'
+require 'zlib'
 
 describe "Zlib::GzipReader#each" do
-  it_behaves_like :gzipreader_each, :each
+  before :each do
+    @data = "firstline\nsecondline\n\nforthline"
+    @zip = [31, 139, 8, 0, 244, 125, 128, 88, 2, 255, 75, 203, 44, 42, 46, 201,
+            201, 204, 75, 229, 42, 78, 77, 206, 207, 75, 1, 51, 185, 210,242,
+            139, 74, 50, 64, 76, 0, 180, 54, 61, 111, 31, 0, 0, 0].pack('C*')
+
+    @io = StringIO.new @zip
+    @gzreader = Zlib::GzipReader.new @io
+  end
+
+  after :each do
+    ScratchPad.clear
+  end
+
+  it "calls the given block for each line in the stream, passing the line as an argument" do
+    ScratchPad.record []
+    @gzreader.each { |b| ScratchPad << b }
+
+    ScratchPad.recorded.should == ["firstline\n", "secondline\n", "\n", "forthline"]
+  end
+
+  it "returns an enumerator, which yields each byte in the stream, when no block is passed" do
+    enum = @gzreader.each
+
+    ScratchPad.record []
+    while true
+      begin
+        ScratchPad << enum.next
+      rescue StopIteration
+        break
+      end
+    end
+
+    ScratchPad.recorded.should == ["firstline\n", "secondline\n", "\n", "forthline"]
+  end
+
+  it "increments position before calling the block" do
+    i = 0
+    @gzreader.each do |line|
+      i += line.length
+      @gzreader.pos.should == i
+    end
+  end
 end