Add test for SWITCH_ACCOUNT

app/soapbox/reducers/__tests__/auth-test.js

@@ -5,6 +5,7 @@ import {
   AUTH_LOGGED_IN,
   VERIFY_CREDENTIALS_SUCCESS,
   VERIFY_CREDENTIALS_FAIL,
+  SWITCH_ACCOUNT,
 } from 'soapbox/actions/auth';
 
 describe('auth reducer', () => {
@@ -145,4 +146,12 @@ describe('auth reducer', () => {
       expect(result.get('me')).toEqual('5678');
     });
   });
+
+  describe('SWITCH_ACCOUNT', () => {
+    it('sets the value of `me`', () => {
+      const action = { type: SWITCH_ACCOUNT, accountId: '5678' };
+      const result = reducer(undefined, action);
+      expect(result.get('me')).toEqual('5678');
+    });
+  });
 });