Add hhea tests

Lib/fontTools/ttLib/tables/_h_h_e_a_test.py

@@ -0,0 +1,160 @@
+from __future__ import absolute_import, unicode_literals
+from fontTools.misc.py23 import *
+from fontTools.misc.loggingTools import CapturingLogHandler
+from fontTools.misc.testTools import parseXML, getXML
+from fontTools.misc.textTools import deHexStr
+from fontTools.ttLib import TTFont, newTable
+from fontTools.misc.fixedTools import log
+import unittest
+
+HHEA_DATA = deHexStr(
+    '0001 0000 '  # 1.0   version
+    '02EE '       # 750   ascent
+    'FF06 '       # -250  descent
+    '00C8 '       # 200   lineGap
+    '03E8 '       # 1000  advanceWidthMax
+    'FFE7 '       # -25   minLeftSideBearing
+    'FFEC '       # -20   minRightSideBearing
+    '03D1 '       # 977   xMaxExtent
+    '0000 '       # 0     caretSlopeRise
+    '0001 '       # 1     caretSlopeRun
+    '0010 '       # 16    caretOffset
+    '0000 '       # 0     reserved0
+    '0000 '       # 0     reserved1
+    '0000 '       # 0     reserved2
+    '0000 '       # 0     reserved3
+    '0000 '       # 0     metricDataFormat
+    '002A '       # 42    numberOfHMetrics
+)
+
+HHEA_AS_DICT = {
+    'tableTag': 'hhea',
+    'tableVersion': 0x00010000,
+    'ascent': 750,
+    'descent': -250,
+    'lineGap': 200,
+    'advanceWidthMax': 1000,
+    'minLeftSideBearing': -25,
+    'minRightSideBearing': -20,
+    'xMaxExtent': 977,
+    'caretSlopeRise': 0,
+    'caretSlopeRun': 1,
+    'caretOffset': 16,
+    'reserved0': 0,
+    'reserved1': 0,
+    'reserved2': 0,
+    'reserved3': 0,
+    'metricDataFormat': 0,
+    'numberOfHMetrics': 42,
+}
+
+HHEA_XML = (
+    '<tableVersion value="0x00010000"/>'
+    '<ascent value="750"/>'
+    '<descent value="-250"/>'
+    '<lineGap value="200"/>'
+    '<advanceWidthMax value="1000"/>'
+    '<minLeftSideBearing value="-25"/>'
+    '<minRightSideBearing value="-20"/>'
+    '<xMaxExtent value="977"/>'
+    '<caretSlopeRise value="0"/>'
+    '<caretSlopeRun value="1"/>'
+    '<caretOffset value="16"/>'
+    '<reserved0 value="0"/>'
+    '<reserved1 value="0"/>'
+    '<reserved2 value="0"/>'
+    '<reserved3 value="0"/>'
+    '<metricDataFormat value="0"/>'
+    '<numberOfHMetrics value="42"/>'
+)
+
+HHEA_XML_VERSION_AS_FLOAT = HHEA_XML.replace(
+    '<tableVersion value="0x00010000"/>',
+    '<tableVersion value="1.0"/>'
+)
+
+
+class HheaCompileOrToXMLTest(unittest.TestCase):
+
+    def setUp(self):
+        hhea = newTable('hhea')
+        hhea.tableVersion = 0x00010000
+        hhea.ascent = 750
+        hhea.descent = -250
+        hhea.lineGap = 200
+        hhea.advanceWidthMax = 1000
+        hhea.minLeftSideBearing = -25
+        hhea.minRightSideBearing = -20
+        hhea.xMaxExtent = 977
+        hhea.caretSlopeRise = 0
+        hhea.caretSlopeRun = 1
+        hhea.caretOffset = 16
+        hhea.metricDataFormat = 0
+        hhea.numberOfHMetrics = 42
+        hhea.reserved0 = hhea.reserved1 = hhea.reserved2 = hhea.reserved3 = 0
+        self.font = TTFont(sfntVersion='OTTO')
+        self.font['hhea'] = hhea
+
+    def test_compile(self):
+        hhea = self.font['hhea']
+        hhea.tableVersion = 0x00010000
+        self.assertEqual(HHEA_DATA, hhea.compile(self.font))
+
+    def test_compile_version_10_as_float(self):
+        hhea = self.font['hhea']
+        hhea.tableVersion = 1.0
+        with CapturingLogHandler(log, "WARNING") as captor:
+            self.assertEqual(HHEA_DATA, hhea.compile(self.font))
+        self.assertTrue(
+            len([r for r in captor.records
+                 if "Table version value is a float" in r.msg]) == 1)
+
+    def test_toXML(self):
+        hhea = self.font['hhea']
+        self.font['hhea'].tableVersion = 0x00010000
+        self.assertEqual(getXML(hhea.toXML), HHEA_XML)
+
+    def test_toXML_version_as_float(self):
+        hhea = self.font['hhea']
+        hhea.tableVersion = 1.0
+        with CapturingLogHandler(log, "WARNING") as captor:
+            self.assertEqual(getXML(hhea.toXML), HHEA_XML)
+        self.assertTrue(
+            len([r for r in captor.records
+                 if "Table version value is a float" in r.msg]) == 1)
+
+
+class HheaDecompileOrFromXMLTest(unittest.TestCase):
+
+    def setUp(self):
+        hhea = newTable('hhea')
+        self.font = TTFont(sfntVersion='OTTO')
+        self.font['hhea'] = hhea
+
+    def test_decompile(self):
+        hhea = self.font['hhea']
+        hhea.decompile(HHEA_DATA, self.font)
+        for key in hhea.__dict__:
+            self.assertEqual(getattr(hhea, key), HHEA_AS_DICT[key])
+
+    def test_fromXML(self):
+        hhea = self.font['hhea']
+        for name, attrs, content in parseXML(HHEA_XML):
+            hhea.fromXML(name, attrs, content, self.font)
+        for key in hhea.__dict__:
+            self.assertEqual(getattr(hhea, key), HHEA_AS_DICT[key])
+
+    def test_fromXML_version_as_float(self):
+        hhea = self.font['hhea']
+        with CapturingLogHandler(log, "WARNING") as captor:
+            for name, attrs, content in parseXML(HHEA_XML_VERSION_AS_FLOAT):
+                hhea.fromXML(name, attrs, content, self.font)
+        self.assertTrue(
+            len([r for r in captor.records
+                 if "Table version value is a float" in r.msg]) == 1)
+        for key in hhea.__dict__:
+            self.assertEqual(getattr(hhea, key), HHEA_AS_DICT[key])
+
+
+if __name__ == "__main__":
+    unittest.main()