Test core functions of OTTableReader and OTTableWriter

Lib/fontTools/ttLib/tables/otBase.py

@@ -130,6 +130,7 @@ class OTTableReader(object):
 
 	def advance(self, count):
 		self.pos += count
+
 	def seek(self, pos):
 		self.pos = pos
 

Lib/fontTools/ttLib/tables/otBase_test.py

@@ -0,0 +1,73 @@
+from __future__ import print_function, division, absolute_import
+from fontTools.misc.py23 import *
+from fontTools.misc.textTools import deHexStr
+from fontTools.ttLib.tables.otBase import OTTableReader, OTTableWriter
+import unittest
+
+
+class OTTableReaderTest(unittest.TestCase):
+    def test_readShort(self):
+        reader = OTTableReader(deHexStr("CA FE"))
+        self.assertEqual(reader.readShort(), -13570)
+        self.assertEqual(reader.pos, 2)
+
+    def test_readLong(self):
+        reader = OTTableReader(deHexStr("CA FE BE EF"))
+        self.assertEqual(reader.readLong(), -889274641)
+        self.assertEqual(reader.pos, 4)
+
+    def test_readUShort(self):
+        reader = OTTableReader(deHexStr("CA FE"))
+        self.assertEqual(reader.readUShort(), 0xCAFE)
+        self.assertEqual(reader.pos, 2)
+
+    def test_readUInt24(self):
+        reader = OTTableReader(deHexStr("C3 13 37"))
+        self.assertEqual(reader.readUInt24(), 0xC31337)
+        self.assertEqual(reader.pos, 3)
+
+    def test_readULong(self):
+        reader = OTTableReader(deHexStr("CA FE BE EF"))
+        self.assertEqual(reader.readULong(), 0xCAFEBEEF)
+        self.assertEqual(reader.pos, 4)
+
+    def test_readTag(self):
+        reader = OTTableReader(deHexStr("46 6F 6F 64"))
+        self.assertEqual(reader.readTag(), "Food")
+        self.assertEqual(reader.pos, 4)
+
+    def test_readData(self):
+        reader = OTTableReader(deHexStr("48 65 6C 6C 6F"))
+        self.assertEqual(reader.readData(5), b"Hello")
+        self.assertEqual(reader.pos, 5)
+
+
+class OTTableWriterTest(unittest.TestCase):
+    def test_writeShort(self):
+        writer = OTTableWriter(globalState={})
+        writer.writeShort(-12345)
+        self.assertEqual(writer.getData(), deHexStr("CF C7"))
+
+    def test_writeLong(self):
+        writer = OTTableWriter(globalState={})
+        writer.writeLong(-12345678)
+        self.assertEqual(writer.getData(), deHexStr("FF 43 9E B2"))
+
+    def test_writeUShort(self):
+        writer = OTTableWriter(globalState={})
+        writer.writeUShort(0xBEEF)
+        self.assertEqual(writer.getData(), deHexStr("BE EF"))
+
+    def test_writeUInt24(self):
+        writer = OTTableWriter(globalState={})
+        writer.writeUInt24(0xBEEF77)
+        self.assertEqual(writer.getData(), deHexStr("BE EF 77"))
+
+    def test_writeULong(self):
+        writer = OTTableWriter(globalState={})
+        writer.writeULong(0xBEEFCAFE)
+        self.assertEqual(writer.getData(), deHexStr("BE EF CA FE"))
+
+
+if __name__ == "__main__":
+    unittest.main()