1 files changed, 54 insertions, 0 deletions
diff --git a/spec/ruby/library/zlib/gzipreader/eof_spec.rb b/spec/ruby/library/zlib/gzipreader/eof_spec.rb
new file mode 100644
index 0000000000..a38e144c72
--- /dev/null
+++ b/spec/ruby/library/zlib/gzipreader/eof_spec.rb
@@ -0,0 +1,54 @@
+require_relative '../../../spec_helper'
+require 'stringio'
+require 'zlib'
+
+describe "Zlib::GzipReader#eof?" do
+  before :each do
+    @data = '{"a":1234}'
+    @zip = [31, 139, 8, 0, 0, 0, 0, 0, 0, 3, 171, 86, 74, 84, 178, 50,
+            52, 50, 54, 169, 5, 0, 196, 20, 118, 213, 10, 0, 0, 0].pack('C*')
+    @io = StringIO.new @zip
+  end
+
+  it "returns true when at EOF" do
+    gz = Zlib::GzipReader.new @io
+    gz.eof?.should == false
+    gz.read
+    gz.eof?.should == true
+  end
+
+  it "returns true when at EOF with the exact length of uncompressed data" do
+    gz = Zlib::GzipReader.new @io
+    gz.eof?.should == false
+    gz.read(10)
+    gz.eof?.should == true
+  end
+
+  it "returns true when at EOF with a length greater than the size of uncompressed data" do
+    gz = Zlib::GzipReader.new @io
+    gz.eof?.should == false
+    gz.read(11)
+    gz.eof?.should == true
+  end
+
+  it "returns false when at EOF when there's data left in the buffer to read" do
+    gz = Zlib::GzipReader.new @io
+    gz.read(9)
+    gz.eof?.should == false
+    gz.read
+    gz.eof?.should == true
+  end
+
+  # This is especially important for JRuby, since eof? there
+  # is more than just a simple accessor.
+  it "does not affect the reading data" do
+    gz = Zlib::GzipReader.new @io
+    0.upto(9) do |i|
+      gz.eof?.should == false
+      gz.read(1).should == @data[i, 1]
+    end
+    gz.eof?.should == true
+    gz.read.should == ""
+    gz.eof?.should == true
+  end
+end