More tests

Models/Denomination.ts

@@ -60,7 +60,27 @@ export class Denomination {
         )
     }
 
-    public canonicalValue(value: string, actAsDefault?: boolean) {
+    /**
+     * Create a representation of the given value
+     * @param value: the value from OSM
+     * @param actAsDefault: if set and the value can be parsed as number, will be parsed and trimmed
+     * 
+     * const unit = new Denomination({
+     *               canonicalDenomination: "m",
+     *               alternativeDenomination: ["meter"],
+     *               'default': true,
+     *               human: {
+     *                   en: "meter"
+     *               }
+     *           }, "test")
+     *  unit.canonicalValue("42m") // =>"42 m"
+     * unit.canonicalValue("42") // =>"42 m"
+     * unit.canonicalValue("42 m") // =>"42 m"
+     * unit.canonicalValue("42 meter") // =>"42 m"
+     * 
+     * 
+     */
+    public canonicalValue(value: string, actAsDefault?: boolean) : string {
         if (value === undefined) {
             return undefined;
         }