java - 在 JUnit 测试(java)中如何使用 Assertj 库检查数组的数组？

Question

我想使用assertj来检查数组中的数据是否包含其他数组。

accounts: [class AccountResource {
        resourceId: 010001781LV
        bicFi: null
        accountId: null
        name: Livret A Rosalie
        details: LIVRET A
        linkedAccount: null
        usage: PRIV
        cashAccountType: null
        product: LVA
        currency: EUR
        balances: [class BalanceResource {
            name: null
            balanceAmount: class AmountType {
                currency: EUR
                amount: 10000
            }
            balanceType: CLBD
            lastChangeDateTime: null
            referenceDate: 2018-05-31
            lastCommittedTransaction: null
        }, class BalanceResource {
            name: null
            balanceAmount: class AmountType {
                currency: EUR
                amount: 10000
            }
            balanceType: XPCD
            lastChangeDateTime: null
            referenceDate: 2018-05-31
            lastCommittedTransaction: null
        }]
        psuStatus: Account Holder
        links: null
    }

我的 2 个第一个测试用例没问题。我过滤“resourceId=010001781LV”并检查 account.currency=EUR。我过滤“resourceId=010001781LV”并检查 account.balances.size()=2。

assertThat(halAccounts.getAccounts())
        .filteredOn(account -> account.getResourceId().equals("010001781LV"))
        .extracting(account -> account.getCurrency())
        .containsExactly("EUR");
assertThat(halAccounts.getAccounts())
        .filteredOn(account -> account.getResourceId().equals("010001781LV"))
        .extracting(account -> account.getBalances().size())
        .containsExactly(2);

但我想过滤“resourceId=010001781LV”并过滤“balances(foreach).balanceType=CLBD”并检查balanceAmount=10000。

我在其他 lambda 中尝试 lambda 但我需要一些帮助:

assertThat(halAccounts.getAccounts())
    .filteredOn(account -> account.getResourceId().equals("010001781LV"))
    .filteredOn(account -> account.getBalances().forEach(balance -> {
        balance.getBalanceAmount().getAmount().equals("10000");
    }))
    .extracting(balance -> balance.getBalanceAmount().getAmount())
    .contains("1000");

我在第二个 filteredOn 时遇到此错误:

Multiple markers at this line
    - The target type of this expression must be a functional interface
    - The method filteredOn(Condition<? super AccountResource>) in the type AbstractIterableAssert<ListAssert<AccountResource>,List<? 
     extends AccountResource>,AccountResource,ObjectAssert<AccountResource>> is not applicable for the arguments ((<no type> account) -> {})

Answer 1

要点是 filterOn 内的表达式应返回 boolean，而 forEach 返回 void。

帐户 ID 应为“DEF”，所有“A”余额应为“10”。

@Test
void test() {
    Account wrongAcc = new Account("ABC", Collections.emptyList());
    Account goodAcc = new Account("DEF", Arrays.asList(
            new Balance("A", "10"),
            new Balance("A", "10"),
            new Balance("B", "20")
    ));
    Account wrongBalanceAcc = new Account("DEF", Arrays.asList(
            new Balance("A", "10"),
            new Balance("A", "20"),
            new Balance("B", "20")
    ));

    List<Account> accountList = Arrays.asList(wrongAcc, goodAcc, wrongBalanceAcc);

    assertThat(accountList)
            .filteredOn(acc -> acc.getId().equals("DEF"))
            .filteredOn(acc ->
                    acc.getBalances()
                            .stream()
                            .noneMatch(balance -> balance.getType().equals("A") && !balance.getAmount().equals("10"))
            ).containsExactly(goodAcc);
}