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Add assertions to assertThrows #358

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Merged
djspiewak merged 2 commits into from
Oct 29, 2022
+14 −20
Merged

Add assertions to assertThrows #358

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d73116f
Add assertions to assertThrows
custommonkey Sep 21, 2022
19b72fb
Update AssertingSyntax.scala
custommonkey Sep 21, 2022
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34 changes: 14 additions & 20 deletions scalatest/shared/src/main/scala/cats/effect/testing/scalatest/AssertingSyntax.scala
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Original file line number Diff line number Diff line change
Expand Up @@ -50,8 +50,15 @@ trait AssertingSyntax {
* Asserts that the `F[A]` fails with an exception of type `E`.
*/
def assertThrows[E <: Throwable](implicit F: Sync[F], ct: reflect.ClassTag[E]): F[Assertion] =
assertThrowsError[E](_ => succeed)

/**
* Asserts that the `F[A]` fails with an exception of type `E` and an expected error.
*/
def assertThrowsError[E <: Throwable](test: E => Assertion)(implicit F: Sync[F], ct: reflect.ClassTag[E]): F[Assertion] =
self.attempt.flatMap {
case Left(_: E) => F.pure(Succeeded: Assertion)
case Left(e: E) =>
F.delay(test(e))
case Left(t) =>
F.delay(
fail(
Expand All @@ -68,25 +75,12 @@ trait AssertingSyntax {
* Asserts that the `F[A]` fails with an exception of type `E` and an expected error message.
*/
def assertThrowsWithMessage[E <: Throwable](expectedMessage: String)(implicit F: Sync[F], ct: reflect.ClassTag[E]): F[Assertion] =
self.attempt.flatMap {
case Left(e: E) =>
if (e.getMessage == expectedMessage)
F.pure(Succeeded: Assertion)
else
F.delay(
fail(
s"Expected exception to have message '$expectedMessage' but got: ${e.getMessage}"
)
)
case Left(t) =>
F.delay(
fail(
s"Expected an exception of type ${ct.runtimeClass.getName} but got an exception: $t"
)
)
case Right(a) =>
F.delay(
fail(s"Expected an exception of type ${ct.runtimeClass.getName} but got a result: $a")
assertThrowsError[E] { e =>
if (e.getMessage == expectedMessage)
succeed
else
fail(
s"Expected exception to have message '$expectedMessage' but got: ${e.getMessage}"
)
}

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