Scalatest matching options - scala

Question

I have this simple test:
test("transform /home into Array(/home)") {
val path = "/home"
val expected: Option[Array[String]] = Some(Array("/home"))
val actual: Option[Array[String]] = luceneService.buildCategoryTree(path)
actual shouldEqual expected
}
And I get this failure:
Some(Array("/home")) did not equal Some(Array("/home"))
How can this be?
As I understand it the docs state that I should be able to use options in tests
If I change the test to
actual.get shouldEqual expected.get
it passes

Answer 1

In the sclatest docs
there is a section that says:
You can work with options using ScalaTest's equality, empty, defined,
and contain syntax. For example, if you wish to check whether an
option is None, you can write any of:
so with your test (sorry I do not have de lucerne object), I also think that is some thing wrong when using arrays
Unfortunately, the current implementation is not able to "properly"
understand Array equality if arrays are within another container such
as Set[Array[Int]]. For example, I would have expected the following
test to pass instead of throwing a TestFailedException:
import org.scalatest._
class SetSuite extends FunSuite with Matchers {
test("transform /home into Array(/home)") {
val path = "/home"
val expected: Option[Array[String]] = Some(Array("/home"))
val actual: Option[Array[String]] = Some(Array(path))
actual shouldEqual expected
}
}
[info] SetSuite:
[info] - transform /home into Array(/home) *** FAILED ***
[info] Some(Array("/home")) did not equal Some(Array("/home")) (TestScalaTest.scala:9)
[info] Run completed in 335 milliseconds.
[info] Total number of tests run: 1
[info] Suites: completed 1, aborted 0
[info] Tests: succeeded 0, failed 1, canceled 0, ignored 0, pending 0
[info] *** 1 TEST FAILED ***
[error] Failed tests:
[error] SetSuite
[error] (test:test) sbt.TestsFailedException: Tests unsuccessful
[error] Total time: 11 s, completed Mar 17, 2016 12:26:25 AM
so for testing let's use
import org.scalatest._
class SetSuite extends FunSuite with Matchers {
test("transform /home into Array(/home)") {
val path = "/home"
val expected: Option[Array[String]] = Some(Array("/home"))
val actual: Option[Array[String]] = Some(Array(path))
actual should contain (Array("/home"))
}
}
[info] SetSuite:
[info] - transform /home into Array(/home)
[info] Run completed in 201 milliseconds.
[info] Total number of tests run: 1
[info] Suites: completed 1, aborted 0
[info] Tests: succeeded 1, failed 0, canceled 0, ignored 0, pending 0
[info] All tests passed.
[success] Total time: 2 s, completed Mar 17, 2016 12:33:01 AM

Answer 2

Looks like there is a bug with the matchers.
Using Seq instead of Array works:
val expected = Some(Seq("/home"))
val actual = luceneService.buildCategoryTree(path).map(_.toSeq)
actual shouldEqual expected

Answer 3

This is scalatest's issue with arrays. Same test works just fine if you convert arrays to say vectors or lists