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Unified Diff: net/tools/dafsa/make_dafsa_unittest.py

Issue 2784933002: Mitigate spoofing attempt using Latin letters. (Closed)
Patch Set: add similarity check unittests Created 3 years, 8 months ago
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Index: net/tools/dafsa/make_dafsa_unittest.py
diff --git a/net/tools/dafsa/make_dafsa_unittest.py b/net/tools/dafsa/make_dafsa_unittest.py
deleted file mode 100755
index 65a82445122303b27df1819244366d0849643a2d..0000000000000000000000000000000000000000
--- a/net/tools/dafsa/make_dafsa_unittest.py
+++ /dev/null
@@ -1,759 +0,0 @@
-#!/usr/bin/env python
-# Copyright 2014 The Chromium Authors. All rights reserved.
-# Use of this source code is governed by a BSD-style license that can be
-# found in the LICENSE file.
-
-
-import sys
-import unittest
-import make_dafsa
-
-
-class ParseGperfTest(unittest.TestCase):
- def testMalformedKey(self):
- """Tests exception is thrown at bad format."""
- infile1 = [ '%%', '', '%%' ]
- self.assertRaises(make_dafsa.InputError, make_dafsa.parse_gperf, infile1)
-
- infile2 = [ '%%', 'apa,1', '%%' ]
- self.assertRaises(make_dafsa.InputError, make_dafsa.parse_gperf, infile2)
-
- infile3 = [ '%%', 'apa, 1', '%%' ]
- self.assertRaises(make_dafsa.InputError, make_dafsa.parse_gperf, infile3)
-
- def testBadValues(self):
- """Tests exception is thrown when value is out of range."""
- infile1 = [ '%%', 'a, -1', '%%' ]
- self.assertRaises(make_dafsa.InputError, make_dafsa.parse_gperf, infile1)
-
- infile2 = [ '%%', 'a, x', '%%' ]
- self.assertRaises(make_dafsa.InputError, make_dafsa.parse_gperf, infile2)
-
- infile5 = [ '%%', 'a, 12', '%%' ]
- self.assertRaises(make_dafsa.InputError, make_dafsa.parse_gperf, infile5)
-
- def testValues(self):
- """Tests legal values are accepted."""
- infile1 = [ '%%', 'a, 0', '%%' ]
- words1 = [ 'a0' ]
- self.assertEqual(make_dafsa.parse_gperf(infile1), words1)
-
- infile2 = [ '%%', 'a, 1', '%%' ]
- words2 = [ 'a1' ]
- self.assertEqual(make_dafsa.parse_gperf(infile2), words2)
-
- infile3 = [ '%%', 'a, 2', '%%' ]
- words3 = [ 'a2' ]
- self.assertEqual(make_dafsa.parse_gperf(infile3), words3)
-
- infile4 = [ '%%', 'a, 3', '%%' ]
- words4 = [ 'a3' ]
- self.assertEqual(make_dafsa.parse_gperf(infile4), words4)
-
- infile5 = [ '%%', 'a, 4', '%%' ]
- words5 = [ 'a4' ]
- self.assertEqual(make_dafsa.parse_gperf(infile5), words5)
-
- infile6 = [ '%%', 'a, 6', '%%' ]
- words6 = [ 'a6' ]
- self.assertEqual(make_dafsa.parse_gperf(infile6), words6)
-
- def testOneWord(self):
- """Tests a single key can be parsed."""
- infile = [ '%%', 'apa, 1', '%%' ]
- words = [ 'apa1' ]
- self.assertEqual(make_dafsa.parse_gperf(infile), words)
-
- def testTwoWords(self):
- """Tests a sequence of keys can be parsed."""
- infile = [ '%%', 'apa, 1', 'bepa.com, 2', '%%' ]
- words = [ 'apa1', 'bepa.com2' ]
- self.assertEqual(make_dafsa.parse_gperf(infile), words)
-
-
-class ToDafsaTest(unittest.TestCase):
- def testEmptyInput(self):
- """Tests exception is thrown at empty input."""
- words = ()
- self.assertRaises(make_dafsa.InputError, make_dafsa.to_dafsa, words)
-
- def testNonASCII(self):
- """Tests exception is thrown if illegal characters are used."""
- words1 = ( chr(0x1F) + 'a1', )
- self.assertRaises(make_dafsa.InputError, make_dafsa.to_dafsa, words1)
-
- words2 = ( 'a' + chr(0x1F) + '1', )
- self.assertRaises(make_dafsa.InputError, make_dafsa.to_dafsa, words2)
-
- words3 = ( chr(0x80) + 'a1', )
- self.assertRaises(make_dafsa.InputError, make_dafsa.to_dafsa, words3)
-
- words4 = ( 'a' + chr(0x80) + '1', )
- self.assertRaises(make_dafsa.InputError, make_dafsa.to_dafsa, words4)
-
- def testChar(self):
- """Tests a DAFSA can be created from a single character domain name."""
- words = [ 'a0' ]
- node2 = ( chr(0), [ None ] )
- node1 = ( 'a', [ node2 ] )
- source = [ node1 ]
- self.assertEqual(make_dafsa.to_dafsa(words), source)
-
- def testChars(self):
- """Tests a DAFSA can be created from a multi character domain name."""
- words = [ 'ab0' ]
- node3 = ( chr(0), [ None ] )
- node2 = ( 'b', [ node3 ] )
- node1 = ( 'a', [ node2 ] )
- source = [ node1 ]
- self.assertEqual(make_dafsa.to_dafsa(words), source)
-
- def testWords(self):
- """Tests a DAFSA can be created from a sequence of domain names."""
- words = [ 'a0', 'b1' ]
- node4 = ( chr(1), [ None ] )
- node3 = ( 'b', [ node4 ] )
- node2 = ( chr(0), [ None ] )
- node1 = ( 'a', [ node2 ] )
- source = [ node1, node3 ]
- self.assertEqual(make_dafsa.to_dafsa(words), source)
-
-
-class ToWordsTest(unittest.TestCase):
- def testSink(self):
- """Tests the sink is exapnded to a list with an empty string."""
- node1 = None
- words = [ '' ]
- self.assertEqual(make_dafsa.to_words(node1), words)
-
- def testSingleNode(self):
- """Tests a single node is expanded to a list with the label string."""
-
- # 'ab' -> [ 'ab' ]
-
- node1 = ( 'ab', [ None ] )
- words = [ 'ab' ]
- self.assertEqual(make_dafsa.to_words(node1), words)
-
- def testChain(self):
- """Tests a sequence of nodes are preoperly expanded."""
-
- # 'ab' -> 'cd' => [ 'abcd' ]
-
- node2 = ( 'cd', [ None ] )
- node1 = ( 'ab', [ node2 ] )
- words = [ 'abcd' ]
- self.assertEqual(make_dafsa.to_words(node1), words)
-
- def testInnerTerminator(self):
- """Tests a sequence with an inner terminator is expanded to two strings."""
-
- # 'a' -> 'b'
- # \ => [ 'ab', 'a' ]
- # {sink}
-
- node2 = ( 'b', [ None ] )
- node1 = ( 'a', [ node2, None ] )
- words = [ 'ab', 'a' ]
- self.assertEqual(make_dafsa.to_words(node1), words)
-
- def testDiamond(self):
- """Tests a diamond can be expanded to a word list."""
-
- # 'cd'
- # / \
- # 'ab' 'gh'
- # \ /
- # 'ef'
-
- node4 = ( 'gh', [ None ] )
- node3 = ( 'ef', [ node4 ] )
- node2 = ( 'cd', [ node4 ] )
- node1 = ( 'ab', [ node2, node3 ] )
- words = [ 'abcdgh', 'abefgh' ]
- self.assertEqual(make_dafsa.to_words(node1), words)
-
-
-class JoinLabelsTest(unittest.TestCase):
- def testLabel(self):
- """Tests a single label passes unchanged."""
-
- # 'a' => 'a'
-
- node1 = ( 'a', [ None ] )
- source = [ node1 ]
- self.assertEqual(make_dafsa.join_labels(source), source)
-
- def testInnerTerminator(self):
- """Tests a sequence with an inner terminator passes unchanged."""
-
- # 'a' -> 'b' 'a' -> 'b'
- # \ => \
- # {sink} {sink}
-
- node2 = ( 'b', [ None ] )
- node1 = ( 'a', [ node2, None ] )
- source = [ node1 ]
- self.assertEqual(make_dafsa.join_labels(source), source)
-
- def testLabels(self):
- """Tests a sequence of labels can be joined."""
-
- # 'a' -> 'b' => 'ab'
-
- node2 = ( 'b', [ None ] )
- node1 = ( 'a', [ node2 ] )
- source1 = [ node1 ]
- node3 = ( 'ab', [ None ] )
- source2 = [ node3 ]
- self.assertEqual(make_dafsa.join_labels(source1), source2)
-
- def testCompositeLabels(self):
- """Tests a sequence of multi character labels can be joined."""
-
- # 'ab' -> 'cd' => 'abcd'
-
- node2 = ( 'cd', [ None ] )
- node1 = ( 'ab', [ node2 ] )
- source1 = [ node1 ]
- node3 = ( 'abcd', [ None ] )
- source2 = [ node3 ]
- self.assertEqual(make_dafsa.join_labels(source1), source2)
-
- def testAtomicTrie(self):
- """Tests a trie formed DAFSA with atomic labels passes unchanged."""
-
- # 'b' 'b'
- # / /
- # 'a' => 'a'
- # \ \
- # 'c' 'c'
-
- node3 = ( 'c', [ None ] )
- node2 = ( 'b', [ None ] )
- node1 = ( 'a', [ node2, node3 ] )
- source = [ node1 ]
- self.assertEqual(make_dafsa.join_labels(source), source)
-
- def testReverseAtomicTrie(self):
- """Tests a reverse trie formed DAFSA with atomic labels passes unchanged."""
-
- # 'a' 'a'
- # \ \
- # 'c' => 'c'
- # / /
- # 'b' 'b'
-
- node3 = ( 'c', [ None ] )
- node2 = ( 'b', [ node3 ] )
- node1 = ( 'a', [ node3 ] )
- source = [ node1, node2 ]
- self.assertEqual(make_dafsa.join_labels(source), source)
-
- def testChainedTrie(self):
- """Tests a trie formed DAFSA with chained labels can be joined."""
-
- # 'c' -> 'd' 'cd'
- # / /
- # 'a' -> 'b' => 'ab'
- # \ \
- # 'e' -> 'f' 'ef'
-
- node6 = ( 'f', [ None ] )
- node5 = ( 'e', [ node6 ] )
- node4 = ( 'd', [ None ] )
- node3 = ( 'c', [ node4 ] )
- node2 = ( 'b', [ node3, node5 ] )
- node1 = ( 'a', [ node2 ] )
- source1 = [ node1 ]
- node9 = ( 'ef', [ None ] )
- node8 = ( 'cd', [ None ] )
- node7 = ( 'ab', [ node8, node9 ] )
- source2 = [ node7 ]
- self.assertEqual(make_dafsa.join_labels(source1), source2)
-
- def testReverseChainedTrie(self):
- """Tests a reverse trie formed DAFSA with chained labels can be joined."""
-
- # 'a' -> 'b' 'ab'
- # \ \
- # 'e' -> 'f' => 'ef'
- # / /
- # 'c' -> 'd' 'cd'
-
- node6 = ( 'f', [ None ] )
- node5 = ( 'e', [ node6 ] )
- node4 = ( 'd', [ node5 ] )
- node3 = ( 'c', [ node4 ] )
- node2 = ( 'b', [ node5 ] )
- node1 = ( 'a', [ node2 ] )
- source1 = [ node1, node3 ]
- node9 = ( 'ef', [ None ] )
- node8 = ( 'cd', [ node9 ] )
- node7 = ( 'ab', [ node9 ] )
- source2 = [ node7, node8 ]
- self.assertEqual(make_dafsa.join_labels(source1), source2)
-
-
-class JoinSuffixesTest(unittest.TestCase):
- def testSingleLabel(self):
- """Tests a single label passes unchanged."""
-
- # 'a' => 'a'
-
- node1 = ( 'a', [ None ] )
- source = [ node1 ]
- self.assertEqual(make_dafsa.join_suffixes(source), source)
-
- def testInnerTerminator(self):
- """Tests a sequence with an inner terminator passes unchanged."""
-
- # 'a' -> 'b' 'a' -> 'b'
- # \ => \
- # {sink} {sink}
-
- node2 = ( 'b', [ None ] )
- node1 = ( 'a', [ node2, None ] )
- source = [ node1 ]
- self.assertEqual(make_dafsa.join_suffixes(source), source)
-
- def testDistinctTrie(self):
- """Tests a trie formed DAFSA with distinct labels passes unchanged."""
-
- # 'b' 'b'
- # / /
- # 'a' => 'a'
- # \ \
- # 'c' 'c'
-
- node3 = ( 'c', [ None ] )
- node2 = ( 'b', [ None ] )
- node1 = ( 'a', [ node2, node3 ] )
- source = [ node1 ]
- self.assertEqual(make_dafsa.join_suffixes(source), source)
-
- def testReverseDistinctTrie(self):
- """Tests a reverse trie formed DAFSA with distinct labels passes unchanged.
- """
-
- # 'a' 'a'
- # \ \
- # 'c' => 'c'
- # / /
- # 'b' 'b'
-
- node3 = ( 'c', [ None ] )
- node2 = ( 'b', [ node3 ] )
- node1 = ( 'a', [ node3 ] )
- source = [ node1, node2 ]
- self.assertEqual(make_dafsa.join_suffixes(source), source)
-
- def testJoinTwoHeads(self):
- """Tests two heads can be joined even if there is something else between."""
-
- # 'a' ------'a'
- # /
- # 'b' => 'b' /
- # /
- # 'a' ---
- #
- # The picture above should shows that the new version should have just one
- # instance of the node with label 'a'.
-
- node3 = ( 'a', [ None ] )
- node2 = ( 'b', [ None ] )
- node1 = ( 'a', [ None ] )
- source1 = [ node1, node2, node3 ]
- source2 = make_dafsa.join_suffixes(source1)
-
- # Both versions should expand to the same content.
- self.assertEqual(source1, source2)
- # But the new version should have just one instance of 'a'.
- self.assertIs(source2[0], source2[2])
-
- def testJoinTails(self):
- """Tests tails can be joined."""
-
- # 'a' -> 'c' 'a'
- # \
- # => 'c'
- # /
- # 'b' -> 'c' 'b'
-
- node4 = ( 'c', [ None ] )
- node3 = ( 'b', [ node4 ] )
- node2 = ( 'c', [ None ] )
- node1 = ( 'a', [ node2 ] )
- source1 = [ node1, node3 ]
- source2 = make_dafsa.join_suffixes(source1)
-
- # Both versions should expand to the same content.
- self.assertEqual(source1, source2)
- # But the new version should have just one tail.
- self.assertIs(source2[0][1][0], source2[1][1][0])
-
- def testMakeRecursiveTrie(self):
- """Tests recursive suffix join."""
-
- # 'a' -> 'e' -> 'g' 'a'
- # \
- # 'e'
- # / \
- # 'b' -> 'e' -> 'g' 'b' \
- # \
- # => 'g'
- # /
- # 'c' -> 'f' -> 'g' 'c' /
- # \ /
- # 'f'
- # /
- # 'd' -> 'f' -> 'g' 'd'
-
- node7 = ( 'g', [ None ] )
- node6 = ( 'f', [ node7 ] )
- node5 = ( 'e', [ node7 ] )
- node4 = ( 'd', [ node6 ] )
- node3 = ( 'c', [ node6 ] )
- node2 = ( 'b', [ node5 ] )
- node1 = ( 'a', [ node5 ] )
- source1 = [ node1, node2, node3, node4 ]
- source2 = make_dafsa.join_suffixes(source1)
-
- # Both versions should expand to the same content.
- self.assertEqual(source1, source2)
- # But the new version should have just one 'e'.
- self.assertIs(source2[0][1][0], source2[1][1][0])
- # And one 'f'.
- self.assertIs(source2[2][1][0], source2[3][1][0])
- # And one 'g'.
- self.assertIs(source2[0][1][0][1][0], source2[2][1][0][1][0])
-
- def testMakeDiamond(self):
- """Test we can join suffixes of a trie."""
-
- # 'b' -> 'd' 'b'
- # / / \
- # 'a' => 'a' 'd'
- # \ \ /
- # 'c' -> 'd' 'c'
-
- node5 = ( 'd', [ None ] )
- node4 = ( 'c', [ node5 ] )
- node3 = ( 'd', [ None ] )
- node2 = ( 'b', [ node3 ] )
- node1 = ( 'a', [ node2, node4 ] )
- source1 = [ node1 ]
- source2 = make_dafsa.join_suffixes(source1)
-
- # Both versions should expand to the same content.
- self.assertEqual(source1, source2)
- # But the new version should have just one 'd'.
- self.assertIs(source2[0][1][0][1][0], source2[0][1][1][1][0])
-
- def testJoinOneChild(self):
- """Tests that we can join some children but not all."""
-
- # 'c' ----'c'
- # / / /
- # 'a' 'a' /
- # \ \ /
- # 'd' 'd'/
- # => /
- # 'c' /
- # / /
- # 'b' 'b'
- # \ \
- # 'e' 'e'
-
- node6 = ( 'e', [ None ] )
- node5 = ( 'c', [ None ] )
- node4 = ( 'b', [ node5, node6 ] )
- node3 = ( 'd', [ None ] )
- node2 = ( 'c', [ None ] )
- node1 = ( 'a', [ node2, node3 ] )
- source1 = [ node1, node4 ]
- source2 = make_dafsa.join_suffixes(source1)
-
- # Both versions should expand to the same content.
- self.assertEqual(source1, source2)
- # But the new version should have just one 'c'.
- self.assertIs(source2[0][1][0], source2[1][1][0])
-
-
-class ReverseTest(unittest.TestCase):
- def testAtomicLabel(self):
- """Tests an atomic label passes unchanged."""
-
- # 'a' => 'a'
-
- node1 = ( 'a', [ None ] )
- source = [ node1 ]
- self.assertEqual(make_dafsa.reverse(source), source)
-
- def testLabel(self):
- """Tests that labels are reversed."""
-
- # 'ab' => 'ba'
-
- node1 = ( 'ab', [ None ] )
- source1 = [ node1 ]
- node2 = ( 'ba', [ None ] )
- source2 = [ node2 ]
- self.assertEqual(make_dafsa.reverse(source1), source2)
-
- def testChain(self):
- """Tests that edges are reversed."""
-
- # 'a' -> 'b' => 'b' -> 'a'
-
- node2 = ( 'b', [ None ] )
- node1 = ( 'a', [ node2 ] )
- source1 = [ node1 ]
- node4 = ( 'a', [ None ] )
- node3 = ( 'b', [ node4 ] )
- source2 = [ node3 ]
- self.assertEqual(make_dafsa.reverse(source1), source2)
-
- def testInnerTerminator(self):
- """Tests a sequence with an inner terminator can be reversed."""
-
- # 'a' -> 'b' 'b' -> 'a'
- # \ => /
- # {sink} ------
-
- node2 = ( 'b', [ None ] )
- node1 = ( 'a', [ node2, None ] )
- source1 = [ node1 ]
- node4 = ( 'a', [ None ] )
- node3 = ( 'b', [ node4 ] )
- source2 = [ node3, node4 ]
- self.assertEqual(make_dafsa.reverse(source1), source2)
-
- def testAtomicTrie(self):
- """Tests a trie formed DAFSA can be reversed."""
-
- # 'b' 'b'
- # / \
- # 'a' => 'a'
- # \ /
- # 'c' 'c'
-
- node3 = ( 'c', [ None ] )
- node2 = ( 'b', [ None ] )
- node1 = ( 'a', [ node2, node3 ] )
- source1 = [ node1 ]
- node6 = ( 'a', [ None ] )
- node5 = ( 'c', [ node6 ] )
- node4 = ( 'b', [ node6 ] )
- source2 = [ node4, node5 ]
- self.assertEqual(make_dafsa.reverse(source1), source2)
-
- def testReverseAtomicTrie(self):
- """Tests a reverse trie formed DAFSA can be reversed."""
-
- # 'a' 'a'
- # \ /
- # 'c' => 'c'
- # / \
- # 'b' 'b'
-
- node3 = ( 'c', [ None ] )
- node2 = ( 'b', [ node3 ] )
- node1 = ( 'a', [ node3 ] )
- source1 = [ node1, node2 ]
- node6 = ( 'b', [ None ] )
- node5 = ( 'a', [ None ] )
- node4 = ( 'c', [ node5, node6 ] )
- source2 = [ node4 ]
- self.assertEqual(make_dafsa.reverse(source1), source2)
-
- def testDiamond(self):
- """Tests we can reverse both edges and nodes in a diamond."""
-
- # 'cd' 'dc'
- # / \ / \
- # 'ab' 'gh' => 'hg' 'ba'
- # \ / \ /
- # 'ef' 'fe'
-
- node4 = ( 'gh', [ None ] )
- node3 = ( 'ef', [ node4 ] )
- node2 = ( 'cd', [ node4 ] )
- node1 = ( 'ab', [ node2, node3 ] )
- source1 = [ node1 ]
- node8 = ( 'ba', [ None ] )
- node7 = ( 'fe', [ node8 ] )
- node6 = ( 'dc', [ node8 ] )
- node5 = ( 'hg', [ node6, node7 ] )
- source2 = [ node5 ]
- self.assertEqual(make_dafsa.reverse(source1), source2)
-
-
-class TopSortTest(unittest.TestCase):
- def testNode(self):
- """Tests a DAFSA with one node can be sorted."""
-
- # 'a' => [ 'a' ]
-
- node1 = ( 'a', [ None ] )
- source = [ node1 ]
- nodes = [ node1 ]
- self.assertEqual(make_dafsa.top_sort(source), nodes)
-
- def testDiamond(self):
- """Tests nodes in a diamond can be sorted."""
-
- # 'b'
- # / \
- # 'a' 'd'
- # \ /
- # 'c'
-
- node4 = ( 'd', [ None ] )
- node3 = ( 'c', [ node4 ] )
- node2 = ( 'b', [ node4 ] )
- node1 = ( 'a', [ node2, node3 ] )
- source = [ node1 ]
- nodes = make_dafsa.top_sort(source)
- self.assertLess(nodes.index(node1), nodes.index(node2))
- self.assertLess(nodes.index(node2), nodes.index(node4))
- self.assertLess(nodes.index(node3), nodes.index(node4))
-
-
-class EncodePrefixTest(unittest.TestCase):
- def testChar(self):
- """Tests to encode a single character prefix."""
- label = 'a'
- bytes = [ ord('a') ]
- self.assertEqual(make_dafsa.encode_prefix(label), bytes)
-
- def testChars(self):
- """Tests to encode a multi character prefix."""
- label = 'ab'
- bytes = [ ord('b'), ord('a') ]
- self.assertEqual(make_dafsa.encode_prefix(label), bytes)
-
-
-class EncodeLabelTest(unittest.TestCase):
- def testChar(self):
- """Tests to encode a single character label."""
- label = 'a'
- bytes = [ ord('a') + 0x80 ]
- self.assertEqual(make_dafsa.encode_label(label), bytes)
-
- def testChars(self):
- """Tests to encode a multi character label."""
- label = 'ab'
- bytes = [ ord('b') + 0x80, ord('a') ]
- self.assertEqual(make_dafsa.encode_label(label), bytes)
-
-
-class EncodeLinksTest(unittest.TestCase):
- def testEndLabel(self):
- """Tests to encode link to the sink."""
- children = [ None ]
- offsets = {}
- bytes = 0
- output = []
- self.assertEqual(make_dafsa.encode_links(children, offsets, bytes),
- output)
-
- def testOneByteOffset(self):
- """Tests to encode a single one byte offset."""
- node = ( '', [ None ] )
- children = [ node ]
- offsets = { id(node) : 2 }
- bytes = 5
- output = [ 132 ]
- self.assertEqual(make_dafsa.encode_links(children, offsets, bytes),
- output)
-
- def testOneByteOffsets(self):
- """Tests to encode a sequence of one byte offsets."""
- node1 = ( '', [ None ] )
- node2 = ( '', [ None ] )
- children = [ node1, node2 ]
- offsets = { id(node1) : 2, id(node2) : 1 }
- bytes = 5
- output = [ 129, 5 ]
- self.assertEqual(make_dafsa.encode_links(children, offsets, bytes),
- output)
-
- def testTwoBytesOffset(self):
- """Tests to encode a single two byte offset."""
- node = ( '', [ None ] )
- children = [ node ]
- offsets = { id(node) : 2 }
- bytes = 1005
- output = [ 237, 195]
- self.assertEqual(make_dafsa.encode_links(children, offsets, bytes),
- output)
-
- def testTwoBytesOffsets(self):
- """Tests to encode a sequence of two byte offsets."""
- node1 = ( '', [ None ] )
- node2 = ( '', [ None ] )
- node3 = ( '', [ None ] )
- children = [ node1, node2, node3 ]
- offsets = { id(node1) : 1002, id(node2) : 2, id(node3) : 2002 }
- bytes = 3005
- output = [ 232, 195, 232, 67, 241, 67 ]
- self.assertEqual(make_dafsa.encode_links(children, offsets, bytes),
- output)
-
- def testThreeBytesOffset(self):
- """Tests to encode a single three byte offset."""
- node = ( '', [ None ] )
- children = [ node ]
- offsets = { id(node) : 2 }
- bytes = 100005
- output = [ 166, 134, 225 ]
- self.assertEqual(make_dafsa.encode_links(children, offsets, bytes),
- output)
-
- def testThreeBytesOffsets(self):
- """Tests to encode a sequence of three byte offsets."""
- node1 = ( '', [ None ] )
- node2 = ( '', [ None ] )
- node3 = ( '', [ None ] )
- children = [ node1, node2, node3 ]
- offsets = { id(node1) : 100002, id(node2) : 2, id(node3) : 200002 }
- bytes = 300005
- output = [ 160, 134, 225, 160, 134, 97, 172, 134, 97 ]
- self.assertEqual(make_dafsa.encode_links(children, offsets, bytes),
- output)
-
- def testOneTwoThreeBytesOffsets(self):
- """Tests to encode offsets of different sizes."""
- node1 = ( '', [ None ] )
- node2 = ( '', [ None ] )
- node3 = ( '', [ None ] )
- children = [ node1, node2, node3 ]
- offsets = { id(node1) : 10003, id(node2) : 10002, id(node3) : 100002 }
- bytes = 300005
- output = [ 129, 143, 95, 97, 74, 13, 99 ]
- self.assertEqual(make_dafsa.encode_links(children, offsets, bytes),
- output)
-
-
-class ExamplesTest(unittest.TestCase):
- def testExample1(self):
- """Tests Example 1 from make_dafsa.py."""
- infile = [ '%%', 'aa, 1', 'a, 2', '%%' ]
- bytes = [ 0x81, 0xE1, 0x02, 0x81, 0x82, 0x61, 0x81 ]
- outfile = make_dafsa.to_cxx(bytes)
- self.assertEqual(make_dafsa.words_to_cxx(make_dafsa.parse_gperf(infile)),
- outfile)
-
- def testExample2(self):
- """Tests Example 2 from make_dafsa.py."""
- infile = [ '%%', 'aa, 1', 'bbb, 2', 'baa, 1', '%%' ]
- bytes = [ 0x02, 0x83, 0xE2, 0x02, 0x83, 0x61, 0x61, 0x81, 0x62, 0x62,
- 0x82 ]
- outfile = make_dafsa.to_cxx(bytes)
- self.assertEqual(make_dafsa.words_to_cxx(make_dafsa.parse_gperf(infile)),
- outfile)
-
-
-if __name__ == '__main__':
- unittest.main()
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