fix tests

Author: vananiev

src/main/java/org/spacious_team/broker/report_parser/api/SecurityTransaction.java

@@ -39,7 +39,7 @@
 @EqualsAndHashCode(callSuper = true, cacheStrategy = LAZY)
 public class SecurityTransaction extends AbstractTransaction {
     @EqualsAndHashCode.Exclude
-    private final @Nullable BigDecimal accruedInterest; // НКД, в валюте бумаги. Если задано, то поле currency обязательно
+    private final @Nullable BigDecimal accruedInterest; // НКД, в валюте бумаги. Если задано, то поле valueCurrency обязательно
 
     @Override
     public List<TransactionCashFlow> getTransactionCashFlows() {

src/test/java/org/spacious_team/broker/report_parser/api/SecurityTransactionTest.java

@@ -84,7 +84,7 @@ void getTransactionCashFlows_accruedInterestIsZero() {
     void getTransactionCashFlows_accruedInterestIsNull() {
         SecurityTransaction tr = this.tr.toBuilder()
                 .accruedInterest(null)
-                .valueCurrency(null)
+                // can't set "valueCurrency(null)", "valueCurrency" is used by not null "value" field
                 .build();
         expectedCashFlows(tr,
                 getValueCashFlow(tr),
@@ -105,7 +105,7 @@ void getTransactionCashFlows_valueIsZero() {
     void getTransactionCashFlows_valueIsNull() {
         SecurityTransaction tr = this.tr.toBuilder()
                 .value(null)
-                .valueCurrency(null)
+                // can't set "valueCurrency(null)", "valueCurrency" is used by not null "accruedInterest" field
                 .build();
         expectedCashFlows(tr,
                 getAccruedInterestCashFlow(tr),