add Sense() test

aht20/aht20_test.go

@@ -0,0 +1,36 @@
+package aht20
+
+import (
+	"periph.io/x/conn/v3/i2c"
+	"periph.io/x/conn/v3/i2c/i2ctest"
+	"periph.io/x/conn/v3/physic"
+	"testing"
+)
+
+func TestDev_Sense(t *testing.T) {
+	bus := i2ctest.Playback{
+		Ops: []i2ctest.IO{
+			// Trigger measurement
+			{Addr: deviceAddress, W: argsMeasure},
+			// Read measurement
+			{Addr: deviceAddress, R: []byte{0x18, 0x75, 0x52, 0x05, 0x8E, 0x40, 0x7F}},
+		},
+	}
+	dev := Dev{d: &i2c.Dev{Bus: &bus, Addr: deviceAddress}, opts: DefaultOpts}
+	e := physic.Env{}
+	if err := dev.Sense(&e); err != nil {
+		t.Fatal(err)
+	}
+	if expected := 19445800781*physic.NanoKelvin + physic.ZeroCelsius; e.Temperature != expected {
+		t.Fatalf("temperature %s(%d) != %s(%d)", expected, expected, e.Temperature, e.Temperature)
+	}
+	if expected := 4582824 * physic.TenthMicroRH; e.Humidity != expected {
+		t.Fatalf("humidity %s(%d) != %s(%d)", expected, expected, e.Humidity, e.Humidity)
+	}
+	if expected := 0 * physic.Pascal; e.Pressure != expected {
+		t.Fatalf("pressure %s(%d) != %s(%d)", expected, expected, e.Pressure, e.Pressure)
+	}
+	if err := bus.Close(); err != nil {
+		t.Fatal(err)
+	}
+}