refactor: make number input immutable (#545)

Co-authored-by: Leyla Jähnig <[email protected]>

1 files changed, 18 insertions, 9 deletions

diff --git a/test/datatype.spec.ts b/test/datatype.spec.ts
index bee280d7..35ac512f 100644
--- a/test/datatype.spec.ts
+++ b/test/datatype.spec.ts
@@ -445,18 +445,27 @@ describe('datatype', () => {
           }
         });
 
-        it('should not modify the input object', () => {
-          const min = 1;
-          const max = 2;
-          const opts = {
-            min: min,
-            max: max,
+        it('should not mutate the input object', () => {
+          const initalMin = 1;
+          const initalPrecision = 1;
+          const initalOtherProperty = 'hello darkness my old friend';
+          const input: {
+            min?: number;
+            max?: number;
+            precision?: number;
+            otherProperty: string;
+          } = {
+            min: initalMin,
+            precision: initalPrecision,
+            otherProperty: initalOtherProperty,
           };
 
-          faker.datatype.number(opts);
+          faker.datatype.number(input);
 
-          expect(opts.min).toBe(min);
-          expect(opts.max).toBe(max);
+          expect(input.min).toBe(initalMin);
+          expect(input.precision).toBe(initalPrecision);
+          expect(input.max).toBe(undefined);
+          expect(input.otherProperty).toBe(initalOtherProperty);
         });
       });