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class NullableBooleansTest { | |
enum class Result { OK, NOT } | |
private fun testNullableBooleanWhen( | |
nullableBoolean: Boolean?, | |
check: (Boolean?) -> Boolean, | |
resulting: Result | |
) { | |
val result = if (check(nullableBoolean)) { | |
Result.OK | |
} else { | |
Result.NOT | |
} | |
assertEquals(resulting, result) | |
} | |
@Test fun forEqualsTrue() { | |
val check: (Boolean?) -> Boolean = { nb -> nb == true } | |
testNullableBooleanWhen(true, check, Result.OK) | |
testNullableBooleanWhen(false, check, Result.NOT) | |
testNullableBooleanWhen(null, check, Result.NOT) | |
} | |
@Test fun forEqualsFalse() { | |
val check: (Boolean?) -> Boolean = { nb -> nb == false } | |
testNullableBooleanWhen(false, check, Result.OK) | |
testNullableBooleanWhen(true, check, Result.NOT) | |
testNullableBooleanWhen(null, check, Result.NOT) | |
} | |
@Test fun forNotEqualsTrue() { | |
val check: (Boolean?) -> Boolean = { nb -> nb != true } | |
testNullableBooleanWhen(false, check, Result.OK) | |
testNullableBooleanWhen(null, check, Result.OK) | |
testNullableBooleanWhen(true, check, Result.NOT) | |
} | |
@Test fun forNotEqualsFalse() { | |
val check: (Boolean?) -> Boolean = { nb -> nb != false } | |
testNullableBooleanWhen(true, check, Result.OK) | |
testNullableBooleanWhen(null, check, Result.OK) | |
testNullableBooleanWhen(false, check, Result.NOT) | |
} | |
@Test fun forEqualsNull() { | |
val check: (Boolean?) -> Boolean = { nb -> nb == null } | |
testNullableBooleanWhen(null, check, Result.OK) | |
testNullableBooleanWhen(false, check, Result.NOT) | |
testNullableBooleanWhen(true, check, Result.NOT) | |
} | |
@Test fun forNotEqualsNull() { | |
val check: (Boolean?) -> Boolean = { nb -> nb != null } | |
testNullableBooleanWhen(false, check, Result.OK) | |
testNullableBooleanWhen(true, check, Result.OK) | |
testNullableBooleanWhen(null, check, Result.NOT) | |
} | |
} |
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