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https://github.com/cmur2/python-bme280.git
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module: add pytest for unit and snapshot testing with travis-ci
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.gitignore
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.gitignore
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.cache/
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env/
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__pycache__/
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*.pyc
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.travis.yml
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.travis.yml
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---
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sudo: false
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language: python
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python:
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- "2.7"
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- "3.6"
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matrix:
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fast_finish: true
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allow_failures:
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- python: "3.6"
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script:
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- pytest
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# python-bme280
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[![Build Status](https://travis-ci.org/cmur2/python-bme280.svg?branch=master)](https://travis-ci.org/cmur2/python-bme280)
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A Python library for accessing the [BME280 combined humidity and pressure](https://ae-bst.resource.bosch.com/media/_tech/media/datasheets/BST-BME280_DS001-11.pdf) from Bosch via `python-smbus` using the I2C interface.
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Default settings are suitable for Raspberry Pi 2 and 3 and was successfully tested using a [breakout](https://github.com/watterott/BME280-Breakout).
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from bme280 import Bme280
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#from bme280 import HO_SKIPPED, HO_1, HO_2, HO_4, HO_8, HO_16, PO_SKIPPED, PO_1, PO_2, PO_4, PO_8, PO_16, TO_SKIPPED, TO_1, TO_2, TO_4, TO_8, TO_16
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#from bme280 import MODE_SLEEP, MODE_FORCED, MODE_NORMAL
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from bme280 import HO_SKIPPED, HO_1, HO_2, HO_4, HO_8, HO_16, PO_SKIPPED, PO_1, PO_2, PO_4, PO_8, PO_16, TO_SKIPPED, TO_1, TO_2, TO_4, TO_8, TO_16
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from bme280 import MODE_SLEEP, MODE_FORCED, MODE_NORMAL
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from bme280 import TSTANDBY_0_5, TSTANDBY_62_5, TSTANDBY_125, TSTANDBY_250, TSTANDBY_500, TSTANDBY_1000, TSTANDBY_10, TSTANDBY_20
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from bme280 import FILTER_OFF, FILTER_2, FILTER_4, FILTER_8, FILTER_16
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pytest.ini
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pytest.ini
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[pytest]
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norecursedirs = env* .*
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requirements.txt
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requirements.txt
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mock==2.0.0
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pytest==3.0.6
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snapshottest==0.5.0
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tests/__init__.py
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tests/__init__.py
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tests/bme280_test.py
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tests/bme280_test.py
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# import unittest
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import sys
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import time
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import mock
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import snapshottest
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# Note: prepare globally mocked modules first and then load our module
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MOCKED_SMBUS_MODULE = mock.Mock()
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sys.modules['smbus'] = MOCKED_SMBUS_MODULE
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time.sleep = lambda s: None
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import bme280
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# inspired by https://github.com/adafruit/Adafruit_Python_GPIO/blob/master/Adafruit_GPIO/I2C.py
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class MockSMBus(object):
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def __init__(self, initial_read=None):
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self._log = []
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self.initial_read = initial_read or {}
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def read_byte(self, addr):
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val = self.initial_read.get(addr).pop(0)
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self._log.append(('r', addr, val))
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return val
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def write_byte(self, addr, val):
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self._log.append(('w', addr, val))
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def read_byte_data(self, addr, cmd):
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val = self.initial_read.get(addr).pop(0)
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self._log.append(('w', addr, cmd))
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self._log.append(('r', addr, val))
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return val
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def write_byte_data(self, addr, cmd, val):
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self._log.append(('w', addr, cmd))
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self._log.append(('w', addr, val))
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def setup_mockbus(**kwargs):
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mockbus = MockSMBus(**kwargs)
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MOCKED_SMBUS_MODULE.SMBus.return_value = mockbus
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return mockbus
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def calibration_read():
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return [0x00] * (24+1+7)
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class TestBme280(snapshottest.TestCase):
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def test_setup(self):
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mockbus = setup_mockbus(initial_read={
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0x76: calibration_read()
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})
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bme = bme280.Bme280()
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MOCKED_SMBUS_MODULE.SMBus.assert_called_with(1)
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self.assertIsNotNone(bme)
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self.assertMatchSnapshot(mockbus._log)
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def test_chip_id(self):
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mockbus = setup_mockbus(initial_read={
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0x76: calibration_read() + [0x23]
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})
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bme = bme280.Bme280()
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self.assertEqual(bme.get_chip_id(), 0x23)
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self.assertMatchSnapshot(mockbus._log)
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def test_reset(self):
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mockbus = setup_mockbus(initial_read={
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0x76: calibration_read()
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})
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bme = bme280.Bme280()
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bme.reset()
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self.assertMatchSnapshot(mockbus._log)
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def test_status(self):
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mockbus = setup_mockbus(initial_read={
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0x76: calibration_read() + [0x08, 0x00, 0x01, 0x00]
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})
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bme = bme280.Bme280()
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self.assertTrue(bme.is_status_measuring())
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self.assertFalse(bme.is_status_measuring())
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self.assertTrue(bme.is_status_image_register_updating())
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self.assertFalse(bme.is_status_image_register_updating())
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self.assertMatchSnapshot(mockbus._log)
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def test_oversampling(self):
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mockbus = setup_mockbus(initial_read={
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0x76: calibration_read()
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})
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bme = bme280.Bme280()
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self.assertEqual(bme.get_humidity_oversampling(), bme280.HO_1)
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bme.set_humidity_oversampling(bme280.HO_16)
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self.assertEqual(bme.get_humidity_oversampling(), bme280.HO_16)
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self.assertEqual(bme.get_temperature_oversampling(), bme280.TO_1)
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bme.set_temperature_oversampling(bme280.TO_16)
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self.assertEqual(bme.get_temperature_oversampling(), bme280.TO_16)
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self.assertEqual(bme.get_pressure_oversampling(), bme280.PO_1)
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bme.set_pressure_oversampling(bme280.PO_16)
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self.assertEqual(bme.get_pressure_oversampling(), bme280.PO_16)
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self.assertMatchSnapshot(mockbus._log)
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def test_mode(self):
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mockbus = setup_mockbus(initial_read={
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0x76: calibration_read()
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})
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bme = bme280.Bme280()
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self.assertEqual(bme.get_mode(), bme280.MODE_SLEEP)
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bme.set_mode(bme280.MODE_FORCED)
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self.assertEqual(bme.get_mode(), bme280.MODE_FORCED)
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self.assertMatchSnapshot(mockbus._log)
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def test_config(self):
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mockbus = setup_mockbus(initial_read={
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0x76: calibration_read()
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})
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bme = bme280.Bme280()
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self.assertEqual(bme.get_tstandy(), bme280.TSTANDBY_1000)
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bme.set_tstandy(bme280.TSTANDBY_20)
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self.assertEqual(bme.get_tstandy(), bme280.TSTANDBY_20)
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self.assertEqual(bme.get_filter(), bme280.FILTER_OFF)
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bme.set_filter(bme280.FILTER_16)
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self.assertEqual(bme.get_filter(), bme280.FILTER_16)
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self.assertMatchSnapshot(mockbus._log)
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def test_data(self):
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mockbus = setup_mockbus(initial_read={
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0x76: calibration_read() + [0x00] * 8
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})
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bme = bme280.Bme280()
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bme.set_mode(bme280.MODE_FORCED)
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t, p, h = bme.get_data()
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# self.assertEqual(t, 0x00)
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self.assertMatchSnapshot(mockbus._log)
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0
tests/snapshots/__init__.py
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0
tests/snapshots/__init__.py
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3052
tests/snapshots/snap_bme280_test.py
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3052
tests/snapshots/snap_bme280_test.py
Normal file
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