1 files changed, 38 insertions, 0 deletions
diff --git a/spec/ruby/library/zlib/gzipwriter/mtime_spec.rb b/spec/ruby/library/zlib/gzipwriter/mtime_spec.rb
new file mode 100644
index 0000000000..af7a4ac735
--- /dev/null
+++ b/spec/ruby/library/zlib/gzipwriter/mtime_spec.rb
@@ -0,0 +1,38 @@
+require File.expand_path('../../../../spec_helper', __FILE__)
+require 'stringio'
+require 'zlib'
+
+describe "Zlib::GzipWriter#mtime=" do
+  before :each do
+    @io = StringIO.new
+  end
+
+  it "sets mtime using Integer" do
+    Zlib::GzipWriter.wrap @io do |gzio|
+      gzio.mtime = 1
+
+      gzio.mtime.should == Time.at(1)
+    end
+
+    @io.string[4, 4].should == [1,0,0,0].pack('C*')
+  end
+
+  it "sets mtime using Time" do
+    Zlib::GzipWriter.wrap @io do |gzio|
+      gzio.mtime = Time.at 1
+
+      gzio.mtime.should == Time.at(1)
+    end
+
+    @io.string[4, 4].should == [1,0,0,0].pack('C*')
+  end
+
+  it "raises if the header was written" do
+    Zlib::GzipWriter.wrap @io do |gzio|
+      gzio.write ''
+
+      lambda { gzio.mtime = nil }.should \
+        raise_error(Zlib::GzipFile::Error, 'header is already written')
+    end
+  end
+end