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Implement a less brain-rot version of dropUnusedMap
The new implementation doesn't require an `AvocADO` instance to work
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,190 @@ | ||
| package avocado.tests | ||
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| import avocado.* | ||
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| class DropMapTest extends munit.FunSuite { | ||
| class myOptionPackage(doOnMap: => Unit) { | ||
| sealed trait MyOption[+A] { | ||
| def map[B](f: A => B): MyOption[B] = this match { | ||
| case MySome(a) => | ||
| doOnMap | ||
| MySome(f(a)) | ||
| case MyNone => MyNone | ||
| } | ||
| def flatMap[B](f: A => MyOption[B]): MyOption[B] = this match { | ||
| case MySome(a) => f(a) | ||
| case MyNone => MyNone | ||
| } | ||
| def zip[B](that: MyOption[B]): MyOption[(A, B)] = (this, that) match { | ||
| case (MySome(a), MySome(b)) => MySome((a, b)) | ||
| case _ => MyNone | ||
| } | ||
| def value: Option[A] = this match { | ||
| case MySome(a) => Some(a) | ||
| case MyNone => None | ||
| } | ||
| } | ||
| case class MySome[A](a: A) extends MyOption[A] | ||
| case object MyNone extends MyOption[Nothing] | ||
| } | ||
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| test("don't drop map in a simple case") { | ||
| val (resOrg, mapUnusedResOrg) = { | ||
| var mapUsed = 0 | ||
| val myOption = new myOptionPackage({ mapUsed = mapUsed + 1 }) | ||
| import myOption.* | ||
| (for { | ||
| a <- MySome(1) | ||
| b <- MySome(2) | ||
| } yield a + b | ||
| ).value -> mapUsed | ||
| } | ||
| val (res, mapUnusedRes) = { | ||
| var mapUsed = 0 | ||
| val myOption = new myOptionPackage({ mapUsed = mapUsed + 1 }) | ||
| import myOption.* | ||
| dropUnusedMap( | ||
| for { | ||
| a <- MySome(1) | ||
| b <- MySome(2) | ||
| } yield a + b | ||
| ).value -> mapUsed | ||
| } | ||
| assertEquals(res, resOrg) | ||
| assert(mapUnusedRes == mapUnusedResOrg) | ||
| } | ||
|
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| test("drop map with same var ref as result") { | ||
| val (resOrg, mapUnusedResOrg) = { | ||
| var mapUsed = 0 | ||
| val myOption = new myOptionPackage({ mapUsed = mapUsed + 1 }) | ||
| import myOption.* | ||
| (for { | ||
| a <- MySome(1) | ||
| b <- MySome(a) | ||
| } yield b | ||
| ).value -> mapUsed | ||
| } | ||
| val (res, mapUnusedRes) = { | ||
| var mapUsed = 0 | ||
| val myOption = new myOptionPackage({ mapUsed = mapUsed + 1 }) | ||
| import myOption.* | ||
| dropUnusedMap( | ||
| for { | ||
| a <- MySome(1) | ||
| b <- MySome(a) | ||
| } yield b | ||
| ).value -> mapUsed | ||
| } | ||
| assertEquals(res, resOrg) | ||
| assert(mapUnusedRes < mapUnusedResOrg) | ||
| } | ||
|
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||
| test("drop map with unit result and wildcard last pattern") { | ||
| val (resOrg, mapUnusedResOrg) = { | ||
| var mapUsed = 0 | ||
| val myOption = new myOptionPackage({ mapUsed = mapUsed + 1 }) | ||
| import myOption.* | ||
| (for { | ||
| a <- MySome(1) | ||
| _ <- MySome(()) | ||
| } yield () | ||
| ).value -> mapUsed | ||
| } | ||
| val (res, mapUnusedRes) = { | ||
| var mapUsed = 0 | ||
| val myOption = new myOptionPackage({ mapUsed = mapUsed + 1 }) | ||
| import myOption.* | ||
| dropUnusedMap( | ||
| for { | ||
| a <- MySome(1) | ||
| _ <- MySome(()) | ||
| } yield () | ||
| ).value -> mapUsed | ||
| } | ||
| assertEquals(res, resOrg) | ||
| assert(mapUnusedRes < mapUnusedResOrg) | ||
| } | ||
|
|
||
| test("drop map with unit result and named last pattern") { | ||
| val (resOrg, mapUnusedResOrg) = { | ||
| var mapUsed = 0 | ||
| val myOption = new myOptionPackage({ mapUsed = mapUsed + 1 }) | ||
| import myOption.* | ||
| (for { | ||
| a <- MySome(1) | ||
| b <- MySome(()) | ||
| } yield () | ||
| ).value -> mapUsed | ||
| } | ||
| val (res, mapUnusedRes) = { | ||
| var mapUsed = 0 | ||
| val myOption = new myOptionPackage({ mapUsed = mapUsed + 1 }) | ||
| import myOption.* | ||
| dropUnusedMap( | ||
| for { | ||
| a <- MySome(1) | ||
| b <- MySome(()) | ||
| } yield () | ||
| ).value -> mapUsed | ||
| } | ||
| assertEquals(res, resOrg) | ||
| assert(mapUnusedRes < mapUnusedResOrg) | ||
| } | ||
|
|
||
| test("drop map with unit result and wildcard last pattern with alias in the middle") { | ||
| val (resOrg, mapUnusedResOrg) = { | ||
| var mapUsed = 0 | ||
| val myOption = new myOptionPackage({ mapUsed = mapUsed + 1 }) | ||
| import myOption.* | ||
| (for { | ||
| a <- MySome(1) | ||
| b = a | ||
| _ <- MySome(()) | ||
| } yield () | ||
| ).value -> mapUsed | ||
| } | ||
| val (res, mapUnusedRes) = { | ||
| var mapUsed = 0 | ||
| val myOption = new myOptionPackage({ mapUsed = mapUsed + 1 }) | ||
| import myOption.* | ||
| dropUnusedMap( | ||
| for { | ||
| a <- MySome(1) | ||
| b = a | ||
| _ <- MySome(()) | ||
| } yield () | ||
| ).value -> mapUsed | ||
| } | ||
| assertEquals(res, resOrg) | ||
| assert(mapUnusedRes < mapUnusedResOrg) | ||
| } | ||
|
|
||
| test("drop map with unit result and named last pattern with alias in the middle") { | ||
| val (resOrg, mapUnusedResOrg) = { | ||
| var mapUsed = 0 | ||
| val myOption = new myOptionPackage({ mapUsed = mapUsed + 1 }) | ||
| import myOption.* | ||
| (for { | ||
| a <- MySome(1) | ||
| b = a | ||
| c <- MySome(()) | ||
| } yield () | ||
| ).value -> mapUsed | ||
| } | ||
| val (res, mapUnusedRes) = { | ||
| var mapUsed = 0 | ||
| val myOption = new myOptionPackage({ mapUsed = mapUsed + 1 }) | ||
| import myOption.* | ||
| dropUnusedMap( | ||
| for { | ||
| a <- MySome(1) | ||
| b = a | ||
| c <- MySome(()) | ||
| } yield () | ||
| ).value -> mapUsed | ||
| } | ||
| assertEquals(res, resOrg) | ||
| assert(mapUnusedRes < mapUnusedResOrg) | ||
| } | ||
| } |