Working I2C reference testcase on CircuitPython

diff --git a/python/testing/implementation/all/bitbangio.py b/python/testing/implementation/all/bitbangio.py
new file mode 100644 (file)
index 0000000..e5a8d30
--- /dev/null
+++ b/python/testing/implementation/all/bitbangio.py
@@ -0,0 +1,35 @@
+import gc
+from testing import yes_no
+gc.collect()
+from unittest import TestCase
+gc.collect()
+
+class TestBME280Interactive(TestCase):
+
+    def test_read_value(self):
+        import board
+        gc.collect()
+        if not(yes_no("Is BME280 wired to SDA {}".format(board.SCL, board.SDA))):
+            return # test trivially passed
+
+        import board
+        gc.collect()
+        import bitbangio
+        gc.collect()
+        import adafruit_bme280
+        gc.collect()
+        i2c = bitbangio.I2C(board.SCL, board.SDA)
+        bme280 = adafruit_bme280.Adafruit_BME280_I2C(i2c)
+        temperature = bme280.temperature
+        humidity = bme280.humidity
+        pressure = bme280.pressure
+        altitude = bme280.altitude
+        self.assertTrue(type(temperature) is float )
+        self.assertTrue(type(humidity) is float )
+        self.assertTrue(type(pressure) is float )
+        self.assertTrue(type(altitude) is float )
+
+        self.assertTrue( -50 <= temperature <= 50)
+        self.assertTrue( 0 <= humidity <= 100)
+        self.assertTrue( 900 <= pressure <= 1100)
+        self.assertTrue( -1000 <= altitude <= 9,848)