1 files changed, 31 insertions, 0 deletions
diff --git a/test/string.spec.ts b/test/string.spec.ts
index c9f82593..1ad429ca 100644
--- a/test/string.spec.ts
+++ b/test/string.spec.ts
@@ -98,6 +98,12 @@ describe('string', () => {
 
     t.itRepeated('uuid', 5);
 
+    t.describe('nanoid', (t) => {
+      t.itRepeated('noArgs', 5)
+        .it('with length parameter', 30)
+        .it('with length range', { min: 13, max: 37 });
+    });
+
     t.describe('special', (t) => {
       t.it('noArgs')
         .itRepeated('with length parameter', 5, 5)
@@ -657,6 +663,31 @@ describe('string', () => {
         });
       });
 
+      describe(`nanoid`, () => {
+        it('generates a valid Nano ID', () => {
+          const id = faker.string.nanoid();
+          const regex = /^[0-9a-zA-Z_-]+$/;
+          expect(id).toMatch(regex);
+        });
+
+        it('should have a default length of 21', () => {
+          const id = faker.string.nanoid();
+          expect(id).toHaveLength(21);
+        });
+
+        it('should return an empty string when length is negative', () => {
+          const id = faker.string.nanoid(-1);
+          expect(id).toBe('');
+        });
+
+        it('should return string with a length within a given range', () => {
+          const actual = faker.string.nanoid({ min: 13, max: 37 });
+
+          expect(actual.length).toBeGreaterThanOrEqual(13);
+          expect(actual.length).toBeLessThanOrEqual(37);
+        });
+      });
+
       describe('special', () => {
         it('should return a value of type string with default length of 1', () => {
           const actual = faker.string.special();