[3] | 1 | import interval_index_file |
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| 2 | from interval_index_file import Indexes |
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| 3 | from tempfile import mktemp |
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| 4 | import random |
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| 5 | |
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| 6 | def test_offsets(): |
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| 7 | assert interval_index_file.offsets_for_max_size( 512*1024*1024 - 1 ) == [ 512 + 64 + 8 + 1, 64 + 8 + 1, 8 + 1, 1, 0 ] |
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| 8 | |
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| 9 | def test_interval_index_file(): |
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| 10 | ix = Indexes() |
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| 11 | chrs = [] |
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| 12 | for i in range( 5 ): |
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| 13 | intervals = [] |
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| 14 | name = "seq%d" % i |
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| 15 | max = random.randint( 0, interval_index_file.MAX ) |
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| 16 | # print name, "size", max |
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| 17 | for i in range( 500 ): |
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| 18 | start = random.randint( 0, max ) |
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| 19 | end = random.randint( 0, max ) |
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| 20 | if end < start: |
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| 21 | end, start = start, end |
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| 22 | ix.add( name, start, end, i, max=interval_index_file.MAX ) |
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| 23 | intervals.append( ( start, end, i ) ) |
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| 24 | chrs.append( intervals ) |
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| 25 | fname = mktemp() |
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| 26 | f = open( fname, "w" ) |
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| 27 | ix.write( f ) |
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| 28 | f.close() |
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| 29 | del ix |
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| 30 | |
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| 31 | ix = Indexes( fname ) |
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| 32 | for i in range( 5 ): |
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| 33 | intervals = chrs[i] |
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| 34 | name = "seq%d" % i |
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| 35 | for i in range( 100 ): |
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| 36 | start = random.randint( 0, max ) |
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| 37 | end = random.randint( 0, max ) |
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| 38 | if end < start: |
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| 39 | end, start = start, end |
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| 40 | query_intervals = set() |
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| 41 | for ( s, e, i ) in intervals: |
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| 42 | if e > start and s < end: |
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| 43 | query_intervals.add( ( s, e, i ) ) |
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| 44 | result = ix.find( name, start, end ) |
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| 45 | for inter in result: |
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| 46 | assert inter in query_intervals |
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