def test_gas_initialization():
with pytest.raises(TypeError):
# pylint: disable=no-value-for-parameter
balloon.Gas()
g = balloon.Gas('air')
assert g.species == 'air'
assert g.temperature == balloon.STANDARD_TEMPERATURE_K
assert g.pressure == balloon.STANDARD_PRESSURE_Pa
assert g.mass == 0
assert g.molar_mass == 0.02897
def test_balloon_burst_threshold():
g = balloon.Gas('air', mass=1)
b = balloon.Balloon('HAB-3000', lift_gas=g)
# override volume
b.match_conditions(100, .001)
assert b.burst_threshold_exceeded == True
b.match_conditions(.001, 1000)
assert b.burst_threshold_exceeded == False
def test_balloon_with_gas():
g = balloon.Gas('air', mass=1)
b = balloon.Balloon('HAB-3000', lift_gas=g)
assert b.volume == g.volume
def test_balloon_initialization():
b = balloon.Balloon('HAB-3000')
assert b.name == 'HAB-3000'
assert type(b.lift_gas) == type(balloon.Gas('air'))
assert b.mass == 3.0
def test_gas_match_conditions():
g = balloon.Gas('air', mass=0)
g.match_conditions(1, 100)
assert g.temperature == 1
assert g.pressure == 100
def test_gas_match_ambient():
atmosphere = 'conditions at 100m altitude'
g = balloon.Gas('air', mass=0)
g.match_ambient(atmosphere)
assert g.temperature == np.array([287.50001023])
assert g.pressure == np.array([100129.45645595])
def test_gas_mass():
g = balloon.Gas('air', mass=1)
assert g.volume == 0.38806961845979154
assert g.density == 2.5768572246621555
def test_gas_massless():
g = balloon.Gas('air', mass=0)
assert g.volume == 0
assert g.density == 2.5768572246621555