python-3.6.zip added from Github

README.cosmo contains the necessary links.

third_party/python/Lib/test/test_normalization.py

@@ -0,0 +1,108 @@
+from test.support import open_urlresource
+import unittest
+
+from http.client import HTTPException
+import sys
+from unicodedata import normalize, unidata_version
+
+TESTDATAFILE = "NormalizationTest.txt"
+TESTDATAURL = "http://www.pythontest.net/unicode/" + unidata_version + "/" + TESTDATAFILE
+
+def check_version(testfile):
+    hdr = testfile.readline()
+    return unidata_version in hdr
+
+class RangeError(Exception):
+    pass
+
+def NFC(str):
+    return normalize("NFC", str)
+
+def NFKC(str):
+    return normalize("NFKC", str)
+
+def NFD(str):
+    return normalize("NFD", str)
+
+def NFKD(str):
+    return normalize("NFKD", str)
+
+def unistr(data):
+    data = [int(x, 16) for x in data.split(" ")]
+    for x in data:
+        if x > sys.maxunicode:
+            raise RangeError
+    return "".join([chr(x) for x in data])
+
+class NormalizationTest(unittest.TestCase):
+    def test_main(self):
+        # Hit the exception early
+        try:
+            testdata = open_urlresource(TESTDATAURL, encoding="utf-8",
+                                        check=check_version)
+        except PermissionError:
+            self.skipTest(f"Permission error when downloading {TESTDATAURL} "
+                          f"into the test data directory")
+        except (OSError, HTTPException):
+            self.fail(f"Could not retrieve {TESTDATAURL}")
+
+        with testdata:
+            self.run_normalization_tests(testdata)
+
+    def run_normalization_tests(self, testdata):
+        part = None
+        part1_data = {}
+
+        for line in testdata:
+            if '#' in line:
+                line = line.split('#')[0]
+            line = line.strip()
+            if not line:
+                continue
+            if line.startswith("@Part"):
+                part = line.split()[0]
+                continue
+            try:
+                c1,c2,c3,c4,c5 = [unistr(x) for x in line.split(';')[:-1]]
+            except RangeError:
+                # Skip unsupported characters;
+                # try at least adding c1 if we are in part1
+                if part == "@Part1":
+                    try:
+                        c1 = unistr(line.split(';')[0])
+                    except RangeError:
+                        pass
+                    else:
+                        part1_data[c1] = 1
+                continue
+
+            # Perform tests
+            self.assertTrue(c2 ==  NFC(c1) ==  NFC(c2) ==  NFC(c3), line)
+            self.assertTrue(c4 ==  NFC(c4) ==  NFC(c5), line)
+            self.assertTrue(c3 ==  NFD(c1) ==  NFD(c2) ==  NFD(c3), line)
+            self.assertTrue(c5 ==  NFD(c4) ==  NFD(c5), line)
+            self.assertTrue(c4 == NFKC(c1) == NFKC(c2) == \
+                            NFKC(c3) == NFKC(c4) == NFKC(c5),
+                            line)
+            self.assertTrue(c5 == NFKD(c1) == NFKD(c2) == \
+                            NFKD(c3) == NFKD(c4) == NFKD(c5),
+                            line)
+
+            # Record part 1 data
+            if part == "@Part1":
+                part1_data[c1] = 1
+
+        # Perform tests for all other data
+        for c in range(sys.maxunicode+1):
+            X = chr(c)
+            if X in part1_data:
+                continue
+            self.assertTrue(X == NFC(X) == NFD(X) == NFKC(X) == NFKD(X), c)
+
+    def test_bug_834676(self):
+        # Check for bug 834676
+        normalize('NFC', '\ud55c\uae00')
+
+
+if __name__ == "__main__":
+    unittest.main()