fix(streak): add boundary tests for speed validation (JhaSourav07#573)

* Add boundary tests for streak speed validation

* style: format streak route tests

Author: riddhimagupta2

app/api/streak/route.test.ts

@@ -230,6 +230,28 @@ describe('GET /api/streak', () => {
 
       expect(body).toContain('8s');
     });
+
+    it('accepts the minimum boundary speed "2s"', async () => {
+      const response = await GET(makeRequest({ user: 'octocat', speed: '2s' }));
+      const body = await response.text();
+
+      expect(body).toContain('2s');
+    });
+
+    it('accepts the maximum boundary speed "20s"', async () => {
+      const response = await GET(makeRequest({ user: 'octocat', speed: '20s' }));
+      const body = await response.text();
+
+      expect(body).toContain('20s');
+    });
+
+    it('falls back to 8s when speed is a non-integer decimal like "2.0s"', async () => {
+      const response = await GET(makeRequest({ user: 'octocat', speed: '2.0s' }));
+      const body = await response.text();
+
+      expect(body).toContain('8s');
+      expect(body).not.toContain('2.0s');
+    });
   });
 
   describe('scale parameter', () => {

app/api/streak/route.ts

@@ -119,7 +119,7 @@ export async function GET(request: Request) {
       text: isAutoTheme ? selectedTheme.text : text || selectedTheme.text,
       accent: isAutoTheme ? selectedTheme.accent : accent || selectedTheme.accent,
       radius,
-      speed,
+      speed: speed && /^(?:[2-9]|1\d|20)s$/.test(speed) ? speed : '8s',
       scale,
       font,
       autoTheme: isAutoTheme,