### Question:
KinClient { public boolean hasAccount() { return getAccountCount() != 0; } KinClient(@NonNull Context context, @NonNull ServiceProvider provider, @NonNull String storeKey);  KinClient(@NonNull Context context, @NonNull ServiceProvider provider); @VisibleForTesting  KinClient(ServiceProvider serviceProvider, KeyStore keyStore, TransactionSender transactionSender,
        AccountActivator accountActivator, AccountInfoRetriever accountInfoRetriever,
        BlockchainEventsCreator blockchainEventsCreator, BackupRestore backupRestore); @NonNull KinAccount addAccount(); @NonNull KinAccount importAccount(@NonNull String exportedJson, @NonNull String passphrase); KinAccount getAccount(int index); boolean hasAccount(); @SuppressWarnings("WeakerAccess") int getAccountCount(); void deleteAccount(int index); @SuppressWarnings("WeakerAccess") void clearAllAccounts(); ServiceProvider getServiceProvider();  }### Answer:
@Test public void hasAccount_EmptyKeyStore_False() throws Exception { assertFalse(kinClient.hasAccount()); }
@Test public void hasAccount_ExistingAccount_True() throws Exception { createKeyStoreWithRandomAccount(); assertTrue(kinClient.hasAccount()); }
@Test public void hasAccount_ExistingMultipleAccounts_True() throws Exception { KeyPair account1 = createRandomAccount(); KeyPair account2 = createRandomAccount(); fakeKeyStore = new FakeKeyStore(Arrays.asList(account1, account2)); kinClient = createNewKinClient(); assertTrue(kinClient.hasAccount()); }