Is there a way to add a descriptive Assert message in a Boolean ZIO Test

Question

I have a couple of Booleans I want to test, like

assert(g8Exists, equalTo(true)) &&
assert(projectExists, equalTo(true)) &&
assert(testenvExists, equalTo(true)) ...

If one fails, all I get is:

false did not satisfy equalTo(true)

No clue which line failed. Is there a way I can add a descriptive Assert message. For example:

assert(g8Exists, equalTo(true), "g8Exists")

Or preferred:

assertTrue(g8Exists, "g8Exists")

Would result in

false did not satisfy equalTo(true) - g8Exists

Or is there a better way to test Booleans in general?

How about creating an ADT instead of using booleans? – Yuval Itzchakov Jan 03 '20 at 12:38 — Yuval Itzchakov, Jan 03 '20 at 12:38

score 6 · Accepted Answer · answered Jan 03 '20 at 13:56

6

Yes! You can use the label method on Assertion or its symbolic alias ?? for this.

assert(g8Exists, isTrue ?? "g8Exists") &&
assert(projectExists, isTrue ?? "projectExists") &&
assert(testenvExists, isTrue ?? "testenvExists")

Assuming that the first assertion fails you would get a nice error message indicating exactly which assertion failed.

false did not satisfy isTrue()
false did not satisfy (isTrue() ?? "g8Exists")

answered Jan 03 '20 at 13:56

Adam Fraser

@adam-fraser - and as always there is already a nice solution - thanks;) – pme Jan 03 '20 at 14:17

1 Answers1