test(common): can 테스트 helper를 추가한다

app/src/main/java/kr/co/vividnext/sodalive/common/SharedPreferenceManager.kt

@@ -92,6 +92,28 @@ object SharedPreferenceManager {
         }
     }
 
+    @VisibleForTesting(otherwise = VisibleForTesting.NONE)
+    fun resetCanForTest() {
+        ensureInitialized()
+        runBlocking {
+            dataStore.edit { preferences ->
+                removeByName(preferences, Constants.PREF_CAN)
+            }
+        }
+        preferenceState.update { state -> state - Constants.PREF_CAN }
+    }
+
+    @VisibleForTesting(otherwise = VisibleForTesting.NONE)
+    fun setCanForTest(value: Int) {
+        ensureInitialized()
+        runBlocking {
+            dataStore.edit { preferences ->
+                preferences[intPreferencesKey(Constants.PREF_CAN)] = value
+            }
+        }
+        preferenceState.update { state -> state + (Constants.PREF_CAN to value) }
+    }
+
     fun clear() {
         ensureInitialized()