def testScanSingleHit(self):
data = b"foobarbaz"
chunk = streaming.Chunk(offset=0, data=data)
spans = list(chunk.Scan(conditions.LiteralMatcher(b"bar")))
self.assertLen(spans, 1)
self.assertEqual(spans[0], self.Span(begin=3, end=6))
def testScanWithOverlapOverlapping(self):
data = b"oooooo"
chunk = streaming.Chunk(offset=0, data=data, overlap=3)
spans = list(chunk.Scan(conditions.LiteralMatcher(b"oo")))
self.assertLen(spans, 2)
self.assertEqual(spans[0], self.Span(begin=2, end=4))
self.assertEqual(spans[1], self.Span(begin=4, end=6))
def testScanWithOverlap(self):
data = b"foofoobarfoofoo"
chunk = streaming.Chunk(offset=0, data=data, overlap=8)
spans = list(chunk.Scan(conditions.LiteralMatcher(b"foo")))
self.assertLen(spans, 2)
self.assertEqual(spans[0], self.Span(begin=9, end=12))
self.assertEqual(spans[1], self.Span(begin=12, end=15))
def testScanOverlappedHits(self):
data = b"xoxoxoxo"
chunk = streaming.Chunk(offset=0, data=data)
spans = list(chunk.Scan(conditions.LiteralMatcher(b"xoxo")))
self.assertLen(spans, 2)
self.assertEqual(spans[0], self.Span(begin=0, end=4))
self.assertEqual(spans[1], self.Span(begin=4, end=8))
def testScanMultiHit(self):
data = b"foobarfoo"
chunk = streaming.Chunk(offset=0, data=data)
spans = list(chunk.Scan(conditions.LiteralMatcher(b"foo")))
self.assertLen(spans, 2)
self.assertEqual(spans[0], self.Span(begin=0, end=3))
self.assertEqual(spans[1], self.Span(begin=6, end=9))
def testNoMatchLiteral(self):
matcher = conditions.LiteralMatcher(b"norf")
span = matcher.Match(b"quux", 0)
self.assertFalse(span)
span = matcher.Match(b"norf", 2)
self.assertFalse(span)
span = matcher.Match(b"quuxnorf", 5)
self.assertFalse(span)
def testMatchLiteral(self):
matcher = conditions.LiteralMatcher(b"bar")
span = matcher.Match(b"foobarbaz", 0)
self.assertTrue(span)
self.assertEqual(span.begin, 3)
self.assertEqual(span.end, 6)
span = matcher.Match(b"barbarbar", 0)
self.assertTrue(span)
self.assertEqual(span.begin, 0)
self.assertEqual(span.end, 3)
span = matcher.Match(b"barbarbar", 4)
self.assertTrue(span)
self.assertEqual(span.begin, 6)
self.assertEqual(span.end, 9)