Add varint and varlong tests

tests/mcp/test_datautils.py

@@ -0,0 +1,31 @@
+from spock.mcp import datautils
+from spock.utils import BoundBuffer
+
+
+def test_unpack_varint():
+    largebuff = BoundBuffer(b'\x80\x94\xeb\xdc\x03')
+    smallbuff = BoundBuffer(b'\x14')
+    assert datautils.unpack_varint(smallbuff) == 20
+    assert datautils.unpack_varint(largebuff) == 1000000000
+
+
+def test_pack_varint():
+    assert datautils.pack_varint(20) == b'\x14'
+    assert datautils.pack_varint(1000000000) == b'\x80\x94\xeb\xdc\x03'
+    assert datautils.pack_varint(-10000000000) is None
+    assert datautils.pack_varint(10000000000) is None
+
+
+def test_unpack_varlong():
+    largebuff = BoundBuffer(b'\x80\xc8\xaf\xa0%')
+    smallbuff = BoundBuffer(b'\x14')
+    assert datautils.unpack_varlong(smallbuff) == 20
+    assert datautils.unpack_varlong(largebuff) == 10000000000
+pass
+
+
+def test_pack_varlong():
+    assert datautils.pack_varlong(20) == b'\x14'
+    assert datautils.pack_varlong(10000000000) == b'\x80\xc8\xaf\xa0%'
+    assert datautils.pack_varlong(10000000000000000000) is None
+    assert datautils.pack_varlong(-10000000000000000000) is None