def test_func_parse_descriptor_log():
f = Curve.parse_descriptor({'$log': 10})
assert f.y(0) == approx(math.log(10), abs=0.01)
f = Curve.parse_descriptor({'$log': {'@args': [10], 'base': 10}})
assert f.y(0) == 1
f = Curve.parse_descriptor({'$log2': 16})
assert f.y(0) == 4
def test_func_parse_descriptor_add():
f = Curve.parse_descriptor({'$add': [1, 2]})
assert f.y(0) == 3
f = Curve.parse_descriptor({'$add': [1, 2, 3]})
assert f.y(0) == 6
f = Curve.parse_descriptor({'$add': [1]})
assert f.y(0) == 1
def test_first():
funcs = [[(0, None), (1, 12), (2, None)], [(0, 1), (1, 1), (2, 1)]]
first = Curve.first(funcs)
assert first(-1) is None
assert first(0) == 1
assert first(1) == 12
assert first(2) == 1
assert first(3) is None
funcs = [[(0, None), (1, 12), (2, None)], 1]
first = Curve.first(funcs)
assert first(-1) == 1
assert first(0) == 1
assert first(1) == 12
assert first(2) == 1
assert first(3) == 1
first = Curve.first([
Generic(lambda x: 1, domain=Interval(0, 2)),
Generic(lambda x: 2, domain=Interval.gte(1))
])
assert first(-1) is None
assert first(0) == 1
assert first(1) == 1
assert first(2) == 1
assert first(2.1) == 2
assert first(3) == 2
assert first.sample_points(Interval(0, 3), min_step=1) == [(0, 1), (1, 1),
(2, 1), (3, 2)]
def test_func_parse_descriptor_log_decorator():
f = Curve.parse_descriptor({'@log2': {'$add': [16, 16]}})
assert f.y(0) == 256
v = Curve.parse_descriptor({'@log10': 10}, fragment=True)
assert v == 10
v = Curve.parse_descriptor({'@log': 10}, fragment=True)
assert v == approx(10, abs=0.01)
def test_min_max():
funcs = [2, Line(const=0, slope=1)]
minf = Curve.min(funcs)
maxf = Curve.max(funcs)
assert minf(0) == 0
assert minf(1) == 1
assert minf(2) == 2
assert minf(3) == 2
assert minf(4) == 2
assert maxf(0) == 2
assert maxf(1) == 2
assert maxf(2) == 2
assert maxf(3) == 3
assert maxf(4) == 4
def test_func_parse_descriptor_chain_with_decorator():
f = Curve.parse_descriptor({'@log': {'$constant': 16}, '$max': 10})
assert f.y(0) == approx(16, abs=0.01)
f = Curve.parse_descriptor({'@log': {'$constant': 16}, '$max': [10]})
assert f.y(0) == approx(16, abs=0.01)
# 2 ^ (10 + 2) = 4096
f = Curve.parse_descriptor({
'@log10': {
'$constant': 10
},
'@log2': {
'$add': 4
}
})
assert f.y(0) == approx(4096, abs=0.01)
def test_max():
f = Curve.max([Points([(0, -1), (1, 0), (2, 1)]), 0])
assert f.domain == Interval.closed(0, 2)
assert f.y(-1) is None
assert f.y(0) == 0
assert f.y(1) == 0
assert f.y(2) == 1
assert f.y(3) is None
f = Curve.max([0, Points([(0, -1), (1, 0), (2, 1)])])
assert f.domain == Interval.closed(0, 2)
assert f.y(-1) is None
assert f.y(0) == 0
assert f.y(1) == 0
assert f.y(2) == 1
assert f.y(3) is None
def test_func_parse_descriptor_line():
f = Curve.parse_descriptor(
{'$line': {
'points': [[100.0, 1000.0], [200.0, 2000.0]]
}})
assert f.y(100) == 1000.0
assert f.y(200) == 2000.0
assert f.y(300) == 3000.0
def test_func_parse_descriptor_chain():
f = Curve.parse_descriptor({'$constant': 16, '$log': {'base': 2}})
assert f.y(0) == 4
def test_func_parse_descriptor_log2():
f = Curve.parse_descriptor({'$log2': 16})
assert f.y(0) == 4
def test_func_parse_descriptor_raised():
f = Curve.parse_descriptor({'$raised': {'@args': [4], 'base': 2}})
assert f.y(0) == 16
def test_func_parse_descriptor_constant():
f = Curve.parse_descriptor({'$constant': 10})
assert f.y(0) == 10
def test_func_parse_descriptor_args_decorator():
f = Curve.parse_descriptor({'$add': {'@args': [10, 20]}})
assert f.y(0) == 30
def test_func_parse_descriptor_min():
f = Curve.parse_descriptor({'$min': [1, 2, 3, -1]})
assert f.y(0) == -1
def test_func_parse_descriptor_chain_with_instance_method():
f = Curve.parse_descriptor({'$constant': -16, '$abs': []})
assert f.y(0) == 16
def test_func_parse_descriptor_chain_with_class_method():
f = Curve.parse_descriptor({'$constant': 16, '$max': [10]})
assert f.y(0) == 16
def test_func_parse_descriptor_fragment_date_decorator():
date = Curve.parse_descriptor({'@date': '2020-02-12 01:23+1200'},
fragment=True)
assert date == 1581427380
def test_func_update():
begin_update_count = 0
begin_update_interval = None
def begin_update(domain):
nonlocal begin_update_count
nonlocal begin_update_interval
begin_update_count += 1
begin_update_interval = domain
end_update_count = 0
end_update_interval = None
def end_update(domain):
nonlocal end_update_count
nonlocal end_update_interval
end_update_count += 1
end_update_interval = domain
f = Curve()
t = f.add_observer(domain=(0, 2), begin=begin_update, end=end_update)
f.begin_update(Interval(1, 3))
assert begin_update_count == 1
assert end_update_count == 0
assert begin_update_interval.start == 1
assert begin_update_interval.end == 3
f.end_update(Interval(1, 3))
assert begin_update_count == 1
assert end_update_count == 1
assert end_update_interval.start == 1
assert end_update_interval.end == 3
f.begin_update(Interval(3, 4))
assert begin_update_count == 1
assert end_update_count == 1
f.end_update(Interval(3, 4))
assert begin_update_count == 1
assert end_update_count == 1
f.remove_observer(t)
f.begin_update(Interval(1, 3))
assert begin_update_count == 1
assert end_update_count == 1
f.end_update(Interval(1, 3))
assert begin_update_count == 1
assert end_update_count == 1
def test_update_with_obj_autoremove():
begin_update_count = 0
def begin_update(domain):
nonlocal begin_update_count
begin_update_count += 1
end_update_count = 0
def end_update(domain):
nonlocal end_update_count
end_update_count += 1
f = Curve()
# Add and remove observer using object
obj = T()
f.add_observer(obj, begin=begin_update, end=end_update, autoremove=True)
f.begin_update(Interval(1, 3))
assert begin_update_count == 1
f.end_update(Interval(1, 3))
assert end_update_count == 1
obj = None
f.begin_update(Interval(1, 3))
assert begin_update_count == 1
f.end_update(Interval(1, 3))
assert end_update_count == 1
