Long isEqualTo Int with equal value fails assertion

[NavorJames]

I just swapped Google Truth with AssertK and found that equal assertion fails for Long/? and Int. Using equality operator in Kotlin also returns the error Operator '==' cannot be applied to 'Long?' and 'Int'. However, this succeeds with Google Truth and I think it's reasonable since they have equal values.

@Test
fun nullableLongToIntEqualityCheckIsTrue(){
    val actual: Long? = 2 + 2
    val expected: Int = 4
    assertThat(actual).isEqualTo(expected)
}

[rf43]

I think it's reasonable since they have equal values.
They are not equal values.
4L != 4

An Int is a 32-bit signed integer
A Long is a 64-bit signed integer

Kotlin does not do implicit numeric widening. In other words these are not interchangeable.

val i: Int = 4
val l: Long = 4L

You must explicitly convert them using .toLong() or .toInt(). This is to prevent silent precision loss and potential bugs.

I have never used Google Truth and if what you're saying is true, that they pass an equality check, you may consider raising that with them to see what they say and whether it would potentially be a bug on their end.

@nishtahir I believe we can close this as not an issue.