[mqtt] support mired<->Kelvin unit conversion (openhab#13575)

Just have to use the newer toInvertibleUnit method that allows the dimension to change. Signed-off-by: Cody Cutrer <cody@cutrer.us>
psmedley · Feb 23, 2023 · 24c03f2 · 24c03f2
1 parent e09f5e2
commit 24c03f2
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Showing 2 changed files with 9 additions and 1 deletion.
diff --git a/...nding.mqtt.generic/src/main/java/org/openhab/binding/mqtt/generic/values/NumberValue.java b/...nding.mqtt.generic/src/main/java/org/openhab/binding/mqtt/generic/values/NumberValue.java
@@ -130,7 +130,7 @@ private BigDecimal getOldValue() {
     private BigDecimal getQuantityTypeAsDecimal(QuantityType<?> qType) {
         BigDecimal val = qType.toBigDecimal();
         if (!qType.getUnit().isCompatible(Units.ONE)) {
-            QuantityType<?> convertedType = qType.toUnit(unit);
+            QuantityType<?> convertedType = qType.toInvertibleUnit(unit);
             if (convertedType != null) {
                 val = convertedType.toBigDecimal();
             }

diff --git a/...inding.mqtt.generic/src/test/java/org/openhab/binding/mqtt/generic/values/ValueTests.java b/...inding.mqtt.generic/src/test/java/org/openhab/binding/mqtt/generic/values/ValueTests.java
@@ -184,6 +184,14 @@ public void numberUpdate() {
         assertThat(v.getChannelState(), is(new QuantityType<>(20, Units.WATT)));
     }
 
+    @Test
+    public void numberUpdateMireds() {
+        NumberValue v = new NumberValue(null, null, new BigDecimal(10), Units.MIRED);
+
+        v.update(new QuantityType<>(2700, Units.KELVIN));
+        assertThat(v.getMQTTpublishValue("%.0f"), is("370"));
+    }
+
     @Test
     public void numberPercentageUpdate() {
         NumberValue v = new NumberValue(null, null, new BigDecimal(10), Units.PERCENT);