From 0a9579c37894d67d721710a13ecc8250cf702256 Mon Sep 17 00:00:00 2001
From: pacien
Date: Fri, 23 Nov 2018 14:16:26 +0100
Subject: Add streamblock test and fix deserialisation

---
 src/streamblock.nim    |  4 +--
 tests/tstreamblock.nim | 66 ++++++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 68 insertions(+), 2 deletions(-)
 create mode 100644 tests/tstreamblock.nim

diff --git a/src/streamblock.nim b/src/streamblock.nim
index 10639ed..49c3dcd 100644
--- a/src/streamblock.nim
+++ b/src/streamblock.nim
@@ -38,8 +38,8 @@ proc readSerialised*(bitReader: BitReader): StreamBlock =
   result.last = bitReader.readBool()
   result.kind = bitReader.readBits(2, uint8).BlockKind
   case result.kind:
-    of uncompressed: result.rawBlock = rawblock.readRaw(bitReader)
-    of lzss: result.lzssBlock = lzssblock.readRaw(bitReader)
+    of uncompressed: result.rawBlock = rawblock.readSerialised(bitReader)
+    of lzss: result.lzssBlock = lzssblock.readSerialised(bitReader)
     else: raise newException(ValueError, "unhandled block type")
 
 proc writeSerialisedTo*(streamBlock: StreamBlock, bitWriter: BitWriter) =
diff --git a/tests/tstreamblock.nim b/tests/tstreamblock.nim
new file mode 100644
index 0000000..f1be559
--- /dev/null
+++ b/tests/tstreamblock.nim
@@ -0,0 +1,66 @@
+# gzip-like LZSS compressor
+# Copyright (C) 2018  Pacien TRAN-GIRARD
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as
+# published by the Free Software Foundation, either version 3 of the
+# License, or (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Affero General Public License for more details.
+#
+# You should have received a copy of the GNU Affero General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+import unittest, streams
+import bitreader, bitwriter, streamblock
+
+suite "streamblock":
+  test "serialise":
+    let rawStream = newStringStream()
+    defer: rawStream.close()
+    rawStream.write(0xFEDC_BA98_7654_3210'u64)
+    rawStream.setPosition(0)
+    let rawBitReader = rawStream.bitReader()
+    let streamBlock = readRaw(rawBitReader, uncompressed)
+
+    let outputStream = newStringStream()
+    defer: outputStream.close()
+    let outputBitWriter = outputStream.bitWriter()
+    streamBlock.writeSerialisedTo(outputBitWriter)
+    outputBitWriter.flush()
+
+    outputStream.setPosition(0)
+    let produceReader = outputStream.bitReader()
+    check produceReader.readBool() == true # last block flag
+    check produceReader.readBits(2, uint8) == 0x00'u8 # block kind
+    check produceReader.readBits(16, uint16) == 64 # raw block length
+    check produceReader.readSeq(64, uint8) == (64, @[0x10'u8, 0x32, 0x54, 0x76, 0x98, 0xBA, 0xDC, 0xFE]) # raw block content
+    discard produceReader.readBits(8 - 2 - 1, uint8)
+    check produceReader.atEnd()
+
+  test "deserialise":
+    let serialisedStream = newStringStream()
+    defer: serialisedStream.close()
+    let serialisedBitWriter = serialisedStream.bitWriter()
+    serialisedBitWriter.writeBool(true)
+    serialisedBitWriter.writeBits(2, 0x00'u8)
+    serialisedBitWriter.writeBits(16, 64'u16)
+    serialisedBitWriter.writeBits(64, 0xFEDC_BA98_7654_3210'u64)
+    serialisedBitWriter.flush()
+
+    serialisedStream.setPosition(0)
+    let serialisedBitReader = serialisedStream.bitReader()
+    let streamBlock = readSerialised(serialisedBitReader)
+
+    let outputStream = newStringStream()
+    defer: outputStream.close()
+    let outputBitWriter = outputStream.bitWriter()
+    streamBlock.writeRawTo(outputBitWriter)
+    outputBitWriter.flush()
+
+    outputStream.setPosition(0)
+    check outputStream.readUint64 == 0xFEDC_BA98_7654_3210'u64
+    check outputStream.atEnd()
-- 
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