Add tests, correct units

projects/hazdev-ng-geoserve-output/src/lib/distance-azimuth.pipe.spec.ts

@@ -3,10 +3,10 @@ import { DistanceAzimuthPipe } from './distance-azimuth.pipe';
 describe('DistanceAzimuthPipe', () => {
   let pipe;
   let place;
+  let referencePlace;
 
   beforeEach(() => {
     pipe = new DistanceAzimuthPipe();
-
     place = {
       admin1_code: 'NM',
       admin1_name: 'New Mexico',
@@ -22,6 +22,10 @@ describe('DistanceAzimuthPipe', () => {
       name: 'Vegas Junction',
       population: 0
     };
+    referencePlace = {
+      latitude: 39,
+      longitude: -105
+    };
   });
 
   describe('compassWinds', () => {
@@ -38,4 +42,15 @@ describe('DistanceAzimuthPipe', () => {
       expect(pipe.compassWinds(522.7)).toEqual('SSE');
     });
   });
+
+  describe('transform', () => {
+    it('should accept a place', () => {
+      expect(pipe.transform(place)).toEqual('2.7 km (1.7 mi) SSE');
+    });
+    it('should accept a referencePlace', () => {
+      expect(pipe.transform(place, referencePlace)).toEqual(
+        '447.3 km (277.9 mi) N'
+      );
+    });
+  });
 });

projects/hazdev-ng-geoserve-output/src/lib/distance-azimuth.ts

@@ -3,7 +3,9 @@ import * as calculator from 'azimuth';
 import { Place } from './place';
 
 export interface DistanceAzimuth {
+  // decimal degrees
   azimuth: number;
+  // kilometers
   distance: number;
 }
 
@@ -28,7 +30,7 @@ export function getDistanceAzimuth(
       }
     );
     azimuth = distAz.azimuth;
-    distance = distAz.distance;
+    distance = distAz.distance / 1000; // meters to kilometers
   }
 
   return {