1# Created: 12.03.2011, 2018 rewritten for pytest
2# Copyright (C) 2011-2019, Manfred Moitzi
3# License: MIT License
4import pytest
5from ezdxf.tools.handle import HandleGenerator
6
7
8def test_next():
9    handles = HandleGenerator('100')
10    assert '100' == handles.next()
11
12
13def test_next_function():
14    handles = HandleGenerator('100')
15    assert '100' == next(handles)
16
17
18def test_seed():
19    handles = HandleGenerator('200')
20    handles.next()
21    assert '201' == str(handles)
22
23
24def test_returns_not_zero():
25    handles = HandleGenerator('0')
26    assert handles.next() != '0'
27
28
29def test_returns_not_negative():
30    handles = HandleGenerator('-2')
31    assert int(handles.next(), 16) > 0
32
33
34def test_reset():
35    handles = HandleGenerator('200')
36    handles.reset('300')
37    assert '300' == str(handles)
38
39
40def test_init_and_reset_rejects_invalid_ints():
41    with pytest.raises(ValueError):
42        HandleGenerator('XXXX')
43    handles = HandleGenerator()
44    with pytest.raises(ValueError):
45        handles.reset('xyz')
46
47