[Units] Add MK⁻¹ unit alias (#4433)

* Add unit alias for Micro Reciprocal Kelvin

Signed-off-by: AndrewFG <[email protected]>

Author: andrewfg

bundles/org.openhab.core/src/main/java/org/openhab/core/library/unit/Units.java

@@ -293,7 +293,9 @@ public final class Units extends CustomUnits {
         SimpleUnitFormat.getInstance().label(MILLIAMPERE_HOUR, "mAh");
         SimpleUnitFormat.getInstance().label(MILLIBAR, "mbar");
         SimpleUnitFormat.getInstance().label(MILLIMETRE_OF_MERCURY, MILLIMETRE_OF_MERCURY.getSymbol());
-        SimpleUnitFormat.getInstance().label(MIRED, "mired");
+        SimpleUnitFormat.getInstance().label(MIRED, "MK⁻¹");
+        SimpleUnitFormat.getInstance().alias(MIRED, "mired");
+        SimpleUnitFormat.getInstance().alias(MIRED, "mirek");
         SimpleUnitFormat.getInstance().label(PARTS_PER_BILLION, "ppb");
         SimpleUnitFormat.getInstance().label(PARTS_PER_MILLION, "ppm");
         SimpleUnitFormat.getInstance().label(PETABYTE, "PB");

bundles/org.openhab.core/src/test/java/org/openhab/core/library/unit/UnitsTest.java

@@ -431,6 +431,17 @@ public void testYearMonthDay() {
         assertThat(converted2.doubleValue(), is(closeTo(12.0, DEFAULT_ERROR)));
     }
 
+    @Test
+    public void testColorTemperatureAliases() {
+        QuantityType<?> value;
+        value = QuantityType.valueOf("20 mired");
+        assertEquals(Units.MIRED, value.getUnit());
+        value = QuantityType.valueOf("20 mirek");
+        assertEquals(Units.MIRED, value.getUnit());
+        value = QuantityType.valueOf("20 MK⁻¹");
+        assertEquals(Units.MIRED, value.getUnit());
+    }
+
     private static class QuantityEquals extends IsEqual<Quantity<?>> {
         private Quantity<?> quantity;