def test_format_time():
assert '0 hr, 0 min, 1 sec' == ViewHelper.format_time(1)
assert '0 hr, 0 min, 59 sec' == ViewHelper.format_time(59.4)
assert '0 hr, 1 min, 0 sec' == ViewHelper.format_time(59.9)
assert '0 hr, 1 min, 0 sec' == ViewHelper.format_time(60)
assert '0 hr, 59 min, 59 sec' == ViewHelper.format_time(3599.4)
assert '1 hr, 0 min, 0 sec' == ViewHelper.format_time(3599.9)
assert '1 hr, 0 min, 0 sec' == ViewHelper.format_time(3600)
assert '1 hr, 5 min, 0 sec' == ViewHelper.format_time(3900)
assert '17 hr, 46 min, 39 sec' == ViewHelper.format_time(9999999999)
def test_format_distance():
assert '0.01 cm' == ViewHelper.format_distance(0.01)
assert '1.00 cm' == ViewHelper.format_distance(1)
assert '99.99 cm' == ViewHelper.format_distance(99.987)
assert '1.00 m' == ViewHelper.format_distance(99.999)
assert '1.00 m' == ViewHelper.format_distance(100)
assert '999.99 m' == ViewHelper.format_distance(99998.99)
assert '1.00 km' == ViewHelper.format_distance(99999.99)
assert '1.00 km' == ViewHelper.format_distance(100000)
assert '1.99 km' == ViewHelper.format_distance(199000)
def test_limit_1000_series_2000():
series = range(0, 2000)
assert ViewHelper.limit_1000(series) == series[:999]
def test_limit_1000_series_empty():
assert ViewHelper.limit_1000([]) == []
def test_limit_1000_series_none():
assert ViewHelper.limit_1000(None) == []
def test_format_time_none():
assert None == ViewHelper.format_distance('')