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106 lines
3.9 KiB
Python
106 lines
3.9 KiB
Python
import unittest
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from pmtiles.tile import zxy_to_tileid, tileid_to_zxy, Entry
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from pmtiles.tile import read_varint, write_varint
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from pmtiles.tile import Entry, find_tile
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from pmtiles.tile import serialize_directory, deserialize_directory
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import io
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class TestVarint(unittest.TestCase):
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def test_read_varint(self):
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buf = io.BytesIO(b"\x00\x01\x7f\xe5\x8e\x26")
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self.assertEqual(read_varint(buf), 0)
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self.assertEqual(read_varint(buf), 1)
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self.assertEqual(read_varint(buf), 127)
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self.assertEqual(read_varint(buf), 624485)
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def test_read_varint_eof(self):
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buf = io.BytesIO(b"")
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self.assertRaises(EOFError, read_varint, buf)
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def test_write_varint(self):
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buf = io.BytesIO()
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write_varint(buf, 0)
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write_varint(buf, 1)
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write_varint(buf, 127)
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write_varint(buf, 624485)
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self.assertEqual(buf.getvalue(), b"\x00\x01\x7f\xe5\x8e\x26")
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class TestTileId(unittest.TestCase):
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def test_zxy_to_tileid(self):
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self.assertEqual(zxy_to_tileid(0, 0, 0), 0)
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self.assertEqual(zxy_to_tileid(1, 0, 0), 1)
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self.assertEqual(zxy_to_tileid(1, 0, 1), 2)
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self.assertEqual(zxy_to_tileid(1, 1, 1), 3)
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self.assertEqual(zxy_to_tileid(1, 1, 0), 4)
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self.assertEqual(zxy_to_tileid(2, 0, 0), 5)
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def test_tileid_to_zxy(self):
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self.assertEqual(tileid_to_zxy(0), (0, 0, 0))
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self.assertEqual(tileid_to_zxy(1), (1, 0, 0))
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self.assertEqual(tileid_to_zxy(19078479), (12, 3423, 1763))
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def test_many_tiles(self):
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for z in range(0, 7):
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for x in range(0, 1 << z):
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for y in range(0, 1 << z):
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i = zxy_to_tileid(z, x, y)
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rz, rx, ry = tileid_to_zxy(i)
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self.assertEqual(z, rz)
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self.assertEqual(x, rx)
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self.assertEqual(y, ry)
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class TestFindTile(unittest.TestCase):
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def test_find_tile_missing(self):
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entries = []
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result = find_tile(entries, 0)
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self.assertEqual(result, None)
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def test_find_tile_first(self):
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entries = [Entry(100, 1, 1, 1)]
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result = find_tile(entries, 100)
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self.assertEqual(result.offset, 1)
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self.assertEqual(result.length, 1)
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def test_find_tile_multiple(self):
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entries = [Entry(100, 1, 1, 2)]
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result = find_tile(entries, 101)
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self.assertEqual(result.offset, 1)
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self.assertEqual(result.length, 1)
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entries = [Entry(100, 1, 1, 2), Entry(150, 2, 2, 2)]
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result = find_tile(entries, 151)
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self.assertEqual(result.offset, 2)
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self.assertEqual(result.length, 2)
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entries = [Entry(50, 1, 1, 2), Entry(100, 2, 2, 1), Entry(150, 3, 3, 1)]
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result = find_tile(entries, 51)
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self.assertEqual(result.offset, 1)
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self.assertEqual(result.length, 1)
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def test_find_tile_leaf(self):
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entries = [Entry(100, 1, 1, 0)]
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result = find_tile(entries, 150)
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self.assertEqual(result.offset, 1)
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self.assertEqual(result.length, 1)
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class TestDirectory(unittest.TestCase):
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def test_roundtrip(self):
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entries = [Entry(0, 0, 0, 0), Entry(1, 1, 1, 1), Entry(2, 2, 2, 2)]
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serialized = serialize_directory(entries)
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result = deserialize_directory(serialized)
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self.assertEqual(len(result), 3)
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self.assertEqual(result[0].tile_id, 0)
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self.assertEqual(result[0].offset, 0)
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self.assertEqual(result[0].length, 0)
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self.assertEqual(result[0].run_length, 0)
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self.assertEqual(result[1].tile_id, 1)
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self.assertEqual(result[1].offset, 1)
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self.assertEqual(result[1].length, 1)
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self.assertEqual(result[1].run_length, 1)
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self.assertEqual(result[2].tile_id, 2)
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self.assertEqual(result[2].offset, 2)
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self.assertEqual(result[2].length, 2)
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self.assertEqual(result[2].run_length, 2)
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