ErrorPriorityTest.java

package com.example.bip39.api;

import static org.junit.jupiter.api.Assertions.assertEquals;
import static org.junit.jupiter.api.Assertions.assertThrows;

import com.example.bip39.error.Bip39ErrorCode;
import com.example.bip39.error.Bip39Exception;
import org.junit.jupiter.api.Test;

class ErrorPriorityTest {

  private static final String INVALID_WORD_COUNT_WITH_UNKNOWN_WORD =
      "abandon abandon abandon abandon abandon abandon abandon abandon abandon abandon" + " typo";

  private static final String WORD_NOT_IN_LIST_WITH_VALID_WORD_COUNT =
      "abandon abandon abandon abandon abandon abandon abandon abandon abandon abandon"
          + " abandon typo";

  @Test
  void validateMnemonicPrioritizesFormatBeforeAnyDeeperChecks() {
    DefaultBip39Service service = new DefaultBip39Service();

    assertEquals(
        Bip39ErrorCode.ERR_INVALID_MNEMONIC_FORMAT,
        service.validateMnemonic("abandon	abandon typo").errorCode());
  }

  @Test
  void validateMnemonicPrioritizesWordCountBeforeWordListChecks() {
    DefaultBip39Service service = new DefaultBip39Service();

    assertEquals(
        Bip39ErrorCode.ERR_INVALID_WORD_COUNT,
        service.validateMnemonic(INVALID_WORD_COUNT_WITH_UNKNOWN_WORD).errorCode());
  }

  @Test
  void validateMnemonicPrioritizesWordListBeforeChecksumMismatch() {
    DefaultBip39Service service = new DefaultBip39Service();

    assertEquals(
        Bip39ErrorCode.ERR_WORD_NOT_IN_LIST,
        service.validateMnemonic(WORD_NOT_IN_LIST_WITH_VALID_WORD_COUNT).errorCode());
  }

  @Test
  void mnemonicToEntropyUsesSamePriorityOrder() {
    DefaultBip39Service service = new DefaultBip39Service();

    Bip39Exception invalidWordCount =
        assertThrows(
            Bip39Exception.class,
            () -> service.mnemonicToEntropy(INVALID_WORD_COUNT_WITH_UNKNOWN_WORD));
    assertEquals(Bip39ErrorCode.ERR_INVALID_WORD_COUNT, invalidWordCount.getErrorCode());

    Bip39Exception wordNotInList =
        assertThrows(
            Bip39Exception.class,
            () -> service.mnemonicToEntropy(WORD_NOT_IN_LIST_WITH_VALID_WORD_COUNT));
    assertEquals(Bip39ErrorCode.ERR_WORD_NOT_IN_LIST, wordNotInList.getErrorCode());
  }
}