fix: deterministic results for address.nearbyGPSCoordinate (#737)

2 files changed, 21 insertions, 1 deletions

diff --git a/src/address.ts b/src/address.ts
index 264b0281..a6f54cca 100644
--- a/src/address.ts
+++ b/src/address.ts
@@ -538,7 +538,13 @@ export class Address {
     // This approach will likely result in a higher density of points near the center.
     const randomCoord = coordinateWithOffset(
       coordinate,
-      degreesToRadians(Math.random() * 360.0),
+      degreesToRadians(
+        this.faker.datatype.number({
+          min: 0,
+          max: 360,
+          precision: 1e-4,
+        })
+      ),
       radius,
       isMetric
     );
diff --git a/test/address.spec.ts b/test/address.spec.ts
index 5929f462..1b987761 100644
--- a/test/address.spec.ts
+++ b/test/address.spec.ts
@@ -29,6 +29,7 @@ const seededRuns = [
       cardinalDirection: 'East',
       cardinalDirectionAbbr: 'E',
       timeZone: 'Europe/Amsterdam',
+      nearbyGpsCoordinates: ['-0.0394', '0.0396'],
     },
   },
   {
@@ -58,6 +59,7 @@ const seededRuns = [
       cardinalDirection: 'East',
       cardinalDirectionAbbr: 'E',
       timeZone: 'Africa/Casablanca',
+      nearbyGpsCoordinates: ['-0.0042', '0.0557'],
     },
   },
   {
@@ -87,6 +89,7 @@ const seededRuns = [
       cardinalDirection: 'West',
       cardinalDirectionAbbr: 'W',
       timeZone: 'Asia/Magadan',
+      nearbyGpsCoordinates: ['0.0503', '-0.0242'],
     },
   },
 ];
@@ -333,6 +336,17 @@ describe('address', () => {
           expect(timeZone).toEqual(expectations.timeZone);
         });
       });
+
+      describe('nearbyGPSCoordinate()', () => {
+        it('returns expected coordinates', () => {
+          faker.seed(seed);
+
+          // this input is required for all expected results for this function
+          const coordsInput: [number, number] = [0, 0];
+          const coords = faker.address.nearbyGPSCoordinate(coordsInput);
+          expect(coords).toEqual(expectations.nearbyGpsCoordinates);
+        });
+      });
     });
   }