-------------------------------------------------------------------------------
Test set: co.jp.minoriclub.domain.user.signup.SignupServiceTest$test_register
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Tests run: 5, Failures: 2, Errors: 0, Skipped: 0, Time elapsed: 0.147 s <<< FAILURE! -- in co.jp.minoriclub.domain.user.signup.SignupServiceTest$test_register
co.jp.minoriclub.domain.user.signup.SignupServiceTest$test_register.error_registerUser_dueToDuplicateEmail -- Time elapsed: 0.019 s <<< FAILURE!
org.opentest4j.AssertionFailedError: Expected co.jp.minoriclub.core.exception.BusinessException to be thrown, but nothing was thrown.
	at org.junit.jupiter.api.AssertionFailureBuilder.build(AssertionFailureBuilder.java:152)
	at org.junit.jupiter.api.AssertThrows.assertThrows(AssertThrows.java:73)
	at org.junit.jupiter.api.AssertThrows.assertThrows(AssertThrows.java:35)
	at org.junit.jupiter.api.Assertions.assertThrows(Assertions.java:3115)
	at co.jp.minoriclub.domain.user.signup.SignupServiceTest$test_register.error_registerUser_dueToDuplicateEmail(SignupServiceTest.java:82)
	at java.base/java.lang.reflect.Method.invoke(Method.java:580)
	at java.base/java.util.ArrayList.forEach(ArrayList.java:1597)
	at java.base/java.util.ArrayList.forEach(ArrayList.java:1597)
	at java.base/java.util.ArrayList.forEach(ArrayList.java:1597)

co.jp.minoriclub.domain.user.signup.SignupServiceTest$test_register.normal_registerUser -- Time elapsed: 0.016 s <<< FAILURE!
Wanted but not invoked:
usersDao.isEmailTaken(null);
-> at co.jp.minoriclub.model.users.UsersDao.isEmailTaken(UsersDao.java:29)

However, there was exactly 1 interaction with this mock:
usersDao.register(
    co.jp.minoriclub.model.users.User@6ad198c9
);
-> at co.jp.minoriclub.domain.user.signup.SignupService.register(SignupService.java:18)


	at co.jp.minoriclub.model.users.UsersDao.isEmailTaken(UsersDao.java:29)
	at co.jp.minoriclub.domain.user.signup.SignupServiceTest$test_register.normal_registerUser(SignupServiceTest.java:56)
	at java.base/java.lang.reflect.Method.invoke(Method.java:580)
	at java.base/java.util.ArrayList.forEach(ArrayList.java:1597)
	at java.base/java.util.ArrayList.forEach(ArrayList.java:1597)
	at java.base/java.util.ArrayList.forEach(ArrayList.java:1597)