add configuration system for ESP Sensors project

tests/test_dht22_sensor.py

@@ -3,27 +3,54 @@ Tests for the DHT22 sensor module.
 """
 import pytest
 from src.esp_sensors.dht22 import DHT22Sensor
+from src.esp_sensors.config import get_sensor_config
 
 
 def test_dht22_sensor_initialization():
     """Test that a DHT22 sensor can be initialized with valid parameters."""
-    sensor = DHT22Sensor("test_sensor", 5, 30, "C")
+    # Test direct parameter initialization
+    sensor = DHT22Sensor(name="test_sensor", pin=5, interval=30, unit="C")
     assert sensor.name == "test_sensor"
     assert sensor.pin == 5
     assert sensor.interval == 30
     assert sensor.unit == "C"
     assert sensor._last_humidity is None
 
+    # Test initialization with custom config
+    test_config = {
+        "sensors": {
+            "dht22": {
+                "name": "config_sensor",
+                "pin": 6,
+                "interval": 40,
+                "temperature": {
+                    "name": "Config Temperature",
+                    "unit": "F"
+                },
+                "humidity": {
+                    "name": "Config Humidity"
+                }
+            }
+        }
+    }
+
+    config_sensor = DHT22Sensor(config=test_config)
+    assert config_sensor.name == "config_sensor"
+    assert config_sensor.pin == 6
+    assert config_sensor.interval == 40
+    assert config_sensor.unit == "F"
+    assert config_sensor._last_humidity is None
+
 
 def test_dht22_sensor_invalid_unit():
     """Test that initializing with an invalid unit raises a ValueError."""
     with pytest.raises(ValueError):
-        DHT22Sensor("test_sensor", 5, 30, "K")
+        DHT22Sensor(name="test_sensor", pin=5, interval=30, unit="K")
 
 
 def test_dht22_sensor_read_temperature():
     """Test that reading temperature from the sensor returns a float value."""
-    sensor = DHT22Sensor("test_sensor", 5)
+    sensor = DHT22Sensor(name="test_sensor", pin=5)
     reading = sensor.read()
     assert isinstance(reading, float)
     # For Celsius, the reading should be between 15.0 and 30.0
@@ -32,7 +59,7 @@ def test_dht22_sensor_read_temperature():
 
 def test_dht22_sensor_read_humidity():
     """Test that reading humidity from the sensor returns a float value."""
-    sensor = DHT22Sensor("test_sensor", 5)
+    sensor = DHT22Sensor(name="test_sensor", pin=5)
     humidity = sensor.read_humidity()
     assert isinstance(humidity, float)
     # Humidity should be between 30.0% and 90.0%
@@ -41,7 +68,7 @@ def test_dht22_sensor_read_humidity():
 
 def test_dht22_sensor_fahrenheit():
     """Test that a sensor initialized with Fahrenheit returns appropriate values."""
-    sensor = DHT22Sensor("test_sensor", 5, unit="F")
+    sensor = DHT22Sensor(name="test_sensor", pin=5, unit="F")
     reading = sensor.read()
     assert isinstance(reading, float)
     # For Fahrenheit, the reading should be between 59.0 and 86.0
@@ -51,13 +78,13 @@ def test_dht22_sensor_fahrenheit():
 def test_dht22_temperature_conversion():
     """Test temperature conversion methods."""
     # Test Celsius to Fahrenheit
-    c_sensor = DHT22Sensor("celsius_sensor", 5, unit="C")
+    c_sensor = DHT22Sensor(name="celsius_sensor", pin=5, unit="C")
     c_sensor._last_reading = 20.0  # Manually set for testing
     f_value = c_sensor.to_fahrenheit()
     assert f_value == 68.0  # 20°C = 68°F
 
     # Test Fahrenheit to Celsius
-    f_sensor = DHT22Sensor("fahrenheit_sensor", 5, unit="F")
+    f_sensor = DHT22Sensor(name="fahrenheit_sensor", pin=5, unit="F")
     f_sensor._last_reading = 68.0  # Manually set for testing
     c_value = f_sensor.to_celsius()
     assert c_value == 20.0  # 68°F = 20°C
@@ -65,7 +92,7 @@ def test_dht22_temperature_conversion():
 
 def test_dht22_metadata():
     """Test that metadata includes the temperature unit, humidity, and type."""
-    sensor = DHT22Sensor("test_sensor", 5, unit="C")
+    sensor = DHT22Sensor(name="test_sensor", pin=5, unit="C")
     metadata = sensor.get_metadata()
     assert metadata["name"] == "test_sensor"
     assert metadata["pin"] == 5
@@ -83,18 +110,18 @@ def test_dht22_metadata():
 
 def test_dht22_read_updates_both_values():
     """Test that reading temperature also updates humidity."""
-    sensor = DHT22Sensor("test_sensor", 5)
+    sensor = DHT22Sensor(name="test_sensor", pin=5)
     assert sensor._last_humidity is None
-    
+
     # Reading temperature should also update humidity
     sensor.read()
     assert sensor._last_humidity is not None
-    
+
     # Reset humidity to test read_humidity
     old_temp = sensor._last_reading
     sensor._last_humidity = None
-    
+
     # Reading humidity should not change temperature
     humidity = sensor.read_humidity()
     assert sensor._last_reading == old_temp
-    assert humidity is not None
+    assert humidity is not None