def test_imperial_temperature_and_speed_of_sound():
value = Measurement(17, 27, 68, 'imperial', 1)
raw_measurement = value.raw_distance()
speed_of_sound = 331.3 * math.sqrt(1+(value.temperature / 273.15))
assert_equal(value.temperature, 20.0016)
assert type(raw_measurement) == float
assert_equal(speed_of_sound, 343.21555930656075)
def test_different_sample_size():
'''Test to ensure that a user defined sample size works correctly.'''
value = Measurement(TRIG_PIN, ECHO_PIN, 68, 'imperial', 1)
raw_measurement1 = value.raw_distance(sample_size=1)
raw_measurement2 = value.raw_distance(sample_size=4)
raw_measurement3 = value.raw_distance(sample_size=11)
assert type(raw_measurement1) == float
assert type(raw_measurement2) == float
assert type(raw_measurement3) == float
def test_different_sample_size():
'''Test that a user defined sample_size works correctly.'''
value = Measurement(TRIG_PIN, ECHO_PIN, 68, 'imperial', 1)
raw_measurement1 = value.raw_distance(sample_size=1)
raw_measurement2 = value.raw_distance(sample_size=4)
raw_measurement3 = value.raw_distance(sample_size=11)
assert type(raw_measurement1) == float
assert type(raw_measurement2) == float
assert type(raw_measurement3) == float
def test_imperial_temperature_and_speed_of_sound():
'''Test that after Fahrenheit is converted to Celsius that speed of sound is
calculated correctly.'''
value = Measurement(TRIG_PIN, ECHO_PIN, 68, 'imperial', 1)
raw_measurement = value.raw_distance()
speed_of_sound = 331.3 * math.sqrt(1+(value.temperature / 273.15))
assert_equal(value.temperature, 20.0016)
assert type(raw_measurement) == float
assert_equal(speed_of_sound, 343.21555930656075)
def test_metric_measurements():
value = Measurement(17, 27, 20, 'metric', 1)
raw_measurement = 48.80804985408
hole_depth = 72
metric_distance = value.distance_metric(raw_measurement)
metric_depth = value.depth_metric(raw_measurement, hole_depth)
assert_equal(metric_distance, 48.8)
assert_equal(metric_depth, 23.2)
def test_different_sample_wait():
'''Test that a user defined sample_wait time work correctly.'''
value = Measurement(TRIG_PIN, ECHO_PIN, gpio_mode=GPIO_MODE)
raw_measurement1 = value.raw_distance(sample_wait=0.3)
raw_measurement2 = value.raw_distance(sample_wait=0.1)
raw_measurement3 = value.raw_distance(sample_wait=0.03)
raw_measurement4 = value.raw_distance(sample_wait=0.01)
assert type(raw_measurement1) == float
assert type(raw_measurement2) == float
assert type(raw_measurement3) == float
assert type(raw_measurement4) == float
def test_imperial_temperature_and_speed_of_sound():
'''Test that after Fahrenheit is converted to Celsius, that speed of sound is
calculated correctly.'''
value = Measurement(TRIG_PIN, ECHO_PIN, 68, 'imperial')
raw_measurement = value.raw_distance()
speed_of_sound = 331.3 * math.sqrt(1 + (value.temperature / 273.15))
assert_equal(value.temperature, 20.0016)
assert_equal(value.unit, 'imperial')
assert_equal(value.round_to, 1)
assert type(raw_measurement) == float
assert_equal(speed_of_sound, 343.21555930656075)
def test_imperial_measurements():
value = Measurement(17, 27, 68, 'imperial', 1)
raw_measurement = 26.454564846
hole_depth = 25
imperial_distance = value.distance_imperial(raw_measurement)
imperial_depth = value.depth_imperial(raw_measurement, hole_depth)
assert type(imperial_distance) == float
assert_equal(imperial_distance, 10.4)
assert_equal(imperial_depth, 14.6)
def test_different_sample_wait():
'''Test that a user defined sample_wait time work correctly.'''
value = Measurement(TRIG_PIN, ECHO_PIN)
raw_measurement1 = value.raw_distance(sample_wait=0.3)
raw_measurement2 = value.raw_distance(sample_wait=0.1)
raw_measurement3 = value.raw_distance(sample_wait=0.03)
raw_measurement4 = value.raw_distance(sample_wait=0.01)
assert type(raw_measurement1) == float
assert type(raw_measurement2) == float
assert type(raw_measurement3) == float
assert type(raw_measurement4) == float
def test_metric_measurements():
'''Test that a metric measurement is what you would expect with a precise
raw_measurement.'''
value = Measurement(TRIG_PIN, ECHO_PIN, 20, 'metric', 1)
raw_measurement = 48.80804985408
hole_depth = 72
metric_distance = value.distance_metric(raw_measurement)
metric_depth = value.depth_metric(raw_measurement, hole_depth)
assert_equal(metric_distance, 48.8)
assert_equal(metric_depth, 23.2)
def test_imperial_measurements():
'''Test that an imperial measurement is what you would expect with a precise
raw_measurement.'''
value = Measurement(TRIG_PIN, ECHO_PIN, 68, 'imperial')
raw_measurement = 26.454564846
hole_depth = 25
imperial_distance = value.distance_imperial(raw_measurement)
imperial_depth = value.depth_imperial(raw_measurement, hole_depth)
assert type(imperial_distance) == float
assert_equal(imperial_distance, 10.4)
assert_equal(imperial_depth, 14.6)
def test_imperial_measurements():
'''Test that an imperial measurement is what you would expect with a precise
raw_measurement.'''
value = Measurement(TRIG_PIN, ECHO_PIN, 68, 'imperial')
raw_measurement = 26.454564846
hole_depth = 25
imperial_distance = value.distance_imperial(raw_measurement)
imperial_depth = value.depth_imperial(raw_measurement, hole_depth)
assert type(imperial_distance) == float
assert_equal(imperial_distance, 10.4)
assert_equal(imperial_depth, 14.6)
def test_measurement():
"""Test that object is being created properly."""
value = Measurement(TRIG_PIN, ECHO_PIN, 25, "metric", gpio_mode=GPIO_MODE)
value_defaults = Measurement(TRIG_PIN, ECHO_PIN)
assert_equal(isinstance(value, Measurement), True)
assert_equal(value.trig_pin, TRIG_PIN)
assert_equal(value.echo_pin, ECHO_PIN)
assert_equal(value.temperature, 25)
assert_equal(value.unit, "metric")
assert_equal(value_defaults.trig_pin, TRIG_PIN)
assert_equal(value_defaults.echo_pin, ECHO_PIN)
assert_equal(value_defaults.temperature, 20)
assert_equal(value_defaults.unit, "metric")
def test_measurement():
'''Test that object is being created properly.'''
value = Measurement(TRIG_PIN, ECHO_PIN, 25, 'metric', 2)
value_defaults = Measurement(TRIG_PIN, ECHO_PIN)
assert_equal(isinstance(value, Measurement), True)
assert_equal(value.trig_pin, TRIG_PIN)
assert_equal(value.echo_pin, ECHO_PIN)
assert_equal(value.temperature, 25)
assert_equal(value.unit, 'metric')
assert_equal(value.round_to, 2)
assert_equal(value_defaults.trig_pin, TRIG_PIN)
assert_equal(value_defaults.echo_pin, ECHO_PIN)
assert_equal(value_defaults.temperature, 20)
assert_equal(value_defaults.unit, 'metric')
assert_equal(value_defaults.round_to, 1)
def test_raises_exception_no_pulse():
"""Test that SystemError raised if echo pulse not received."""
# Typically this error gets raised with a faulty cable.
# Wrong echo pin simulates that condition"""
wrong_echo_pin = ECHO_PIN - 1
value = Measurement(TRIG_PIN, wrong_echo_pin)
assert_raises(SystemError, value.raw_distance)
def test_metric_measurements():
'''Test that a metric measurement is what you would expect with a precise
raw_measurement.'''
value = Measurement(TRIG_PIN, ECHO_PIN, 20, 'metric', 2)
value_defaults = Measurement(TRIG_PIN, ECHO_PIN)
raw_measurement = 48.80804985408
hole_depth = 72
metric_distance = value.distance_metric(raw_measurement)
metric_depth = value.depth_metric(raw_measurement, hole_depth)
assert_equal(metric_distance, 48.81)
assert_equal(metric_depth, 23.19)
metric_distance = value_defaults.distance_metric(raw_measurement)
metric_depth = value_defaults.depth_metric(raw_measurement, hole_depth)
assert_equal(metric_distance, 48.8)
assert_equal(metric_depth, 23.2)
def test_raises_exception_unit():
"""Test that a ValueError is raised if user passes invalid unit type"""
value = Measurement(TRIG_PIN, ECHO_PIN, unit="Fahrenheit")
assert_raises(ValueError, value.raw_distance)
def metric():
"""metric Measurement object"""
return Measurement(TRIG_PIN, ECHO_PIN, 20, "metric", GPIO_MODE)
def imperial():
"""imperial Measurement object"""
return Measurement(TRIG_PIN, ECHO_PIN, 68, "imperial", GPIO_MODE)
