Esempio n. 1
0
        public void Gzip_Seek()
        {
            // Verify behavior of a compression stream
            using (GzipWriter stream = new GzipWriter(new MemoryStream()))
            {
                try { stream.Seek(50, SeekOrigin.Begin); Assert.Fail("Method call should have thrown an exception"); }
                catch (Exception ex) { Assert.IsInstanceOfType(ex, typeof(NotSupportedException)); }

                try { stream.Seek(0, SeekOrigin.Current); Assert.Fail("Method call should have thrown an exception"); }
                catch (Exception ex) { Assert.IsInstanceOfType(ex, typeof(NotSupportedException)); }

                try { stream.Seek(-50, SeekOrigin.End); Assert.Fail("Method call should have thrown an exception"); }
                catch (Exception ex) { Assert.IsInstanceOfType(ex, typeof(NotSupportedException)); }
            }

            // Verify behavior of a decompression stream
            using (GzipReader stream = new GzipReader(new MemoryStream(s_sampledata)))
            {
                try { stream.Seek(50, SeekOrigin.Begin); Assert.Fail("Method call should have thrown an exception"); }
                catch (Exception ex) { Assert.IsInstanceOfType(ex, typeof(NotSupportedException)); }

                try { stream.Seek(0, SeekOrigin.Current); Assert.Fail("Method call should have thrown an exception"); }
                catch (Exception ex) { Assert.IsInstanceOfType(ex, typeof(NotSupportedException)); }

                try { stream.Seek(-50, SeekOrigin.End); Assert.Fail("Method call should have thrown an exception"); }
                catch (Exception ex) { Assert.IsInstanceOfType(ex, typeof(NotSupportedException)); }
            }
        }
Esempio n. 2
0
        public void Gzip_WriterDispose()
        {
            byte[] buffer = new byte[8192];                     // 8KiB data buffer

            // Create a dummy stream and immediately dispose of it
            GzipWriter stream = new GzipWriter(new MemoryStream(s_sampledata), CompressionLevel.Optimal);

            stream.Dispose();

            // Test double dispose
            stream.Dispose();

            // All properties and methods should throw an ObjectDisposedException
            try { var bs = stream.BaseStream; Assert.Fail("Property access should have thrown an exception"); }
            catch (Exception ex) { Assert.IsInstanceOfType(ex, typeof(ObjectDisposedException)); }

            try { var b = stream.CanRead; Assert.Fail("Property access should have thrown an exception"); }
            catch (Exception ex) { Assert.IsInstanceOfType(ex, typeof(ObjectDisposedException)); }

            try { var b = stream.CanSeek; Assert.Fail("Property access should have thrown an exception"); }
            catch (Exception ex) { Assert.IsInstanceOfType(ex, typeof(ObjectDisposedException)); }

            try { var b = stream.CanWrite; Assert.Fail("Property access should have thrown an exception"); }
            catch (Exception ex) { Assert.IsInstanceOfType(ex, typeof(ObjectDisposedException)); }

            try { stream.Flush(); Assert.Fail("Method call should have thrown an exception"); }
            catch (Exception ex) { Assert.IsInstanceOfType(ex, typeof(ObjectDisposedException)); }

            try { var l = stream.Length; Assert.Fail("Property access should have thrown an exception"); }
            catch (Exception ex) { Assert.IsInstanceOfType(ex, typeof(ObjectDisposedException)); }

            try { var l = stream.Position; Assert.Fail("Property access should have thrown an exception"); }
            catch (Exception ex) { Assert.IsInstanceOfType(ex, typeof(ObjectDisposedException)); }

            try { stream.Position = 12345L; Assert.Fail("Property access should have thrown an exception"); }
            catch (Exception ex) { Assert.IsInstanceOfType(ex, typeof(ObjectDisposedException)); }

            try { stream.Read(buffer, 0, 8192); Assert.Fail("Method call should have thrown an exception"); }
            catch (Exception ex) { Assert.IsInstanceOfType(ex, typeof(ObjectDisposedException)); }

            try { stream.Seek(0, SeekOrigin.Current); Assert.Fail("Method call should have thrown an exception"); }
            catch (Exception ex) { Assert.IsInstanceOfType(ex, typeof(ObjectDisposedException)); }

            try { stream.SetLength(12345L); Assert.Fail("Method call should have thrown an exception"); }
            catch (Exception ex) { Assert.IsInstanceOfType(ex, typeof(ObjectDisposedException)); }

            try { stream.Write(buffer); Assert.Fail("Method call should have thrown an exception"); }
            catch (Exception ex) { Assert.IsInstanceOfType(ex, typeof(ObjectDisposedException)); }

            try { stream.Write(buffer, 0, 8192); Assert.Fail("Method call should have thrown an exception"); }
            catch (Exception ex) { Assert.IsInstanceOfType(ex, typeof(ObjectDisposedException)); }

            // Ensure that an underlying stream is disposed of properly if leaveopen is not set
            MemoryStream ms = new MemoryStream(s_sampledata);

            using (GzipWriter compressor = new GzipWriter(ms, CompressionLevel.Fastest)) { }
            try { ms.Write(buffer, 0, 8192); Assert.Fail("Method call should have thrown an exception"); }
            catch (Exception ex) { Assert.IsInstanceOfType(ex, typeof(ObjectDisposedException)); }

            // Ensure that an underlying stream is not disposed of if leaveopen is set
            ms = new MemoryStream(s_sampledata);
            using (GzipWriter compressor = new GzipWriter(ms, CompressionLevel.Fastest, true)) { }
            ms.Write(buffer, 0, 8192);
            ms.Dispose();
        }