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| Original file line number | Diff line number | Diff line change |
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@@ -13,3 +13,5 @@ TAGS | |
| project/metals.sbt | ||
| .metals/ | ||
| .bloop/ | ||
| .bsp/ | ||
| project/project/ | ||
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166 changes: 166 additions & 0 deletions
166
macros/src/test/scala/spire/macros/CheckedScalaCheckSuite.scala
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,166 @@ | ||
| package spire | ||
| package macros | ||
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| import org.scalacheck.Arbitrary | ||
| import org.scalacheck.Prop._ | ||
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| class CheckedScalaCheckSuite extends munit.ScalaCheckSuite { | ||
| import Checked.checked | ||
| import Arbitrary.arbitrary | ||
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| case class NotZero[A](value: A) | ||
| implicit def arbNotZeroLong = Arbitrary(arbitrary[Long] filter (_ != 0L) map (NotZero(_))) | ||
| implicit def arbNotZeroInt = Arbitrary(arbitrary[Int] filter (_ != 0L) map (NotZero(_))) | ||
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| def checkForLongOverflow(value: BigInt, check: => Long): Unit = { | ||
| if (value.isValidLong) { | ||
| assertEquals(check, value.toLong) | ||
| } else { | ||
| intercept[ArithmeticException] { check } | ||
| } | ||
| } | ||
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| def checkForIntOverflow(value: BigInt, check: => Int): Unit = { | ||
| if (value.isValidInt) { | ||
| assertEquals(check, value.toInt) | ||
| } else { | ||
| intercept[ArithmeticException] { check } | ||
| } | ||
| } | ||
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| test("Negate of Int.MinValue overflows") { | ||
| val x = Int.MinValue | ||
| intercept[ArithmeticException] { checked(-x) } | ||
| } | ||
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| property("Int negate overflow throws arithmetic exception") { | ||
| forAll { (x: Int) => | ||
| checkForIntOverflow(-BigInt(x), checked(-x)) | ||
| } | ||
| } | ||
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| property("Int addition overflow throws arithmetic exception") { | ||
| forAll { (x: Int, y: Int) => | ||
| checkForIntOverflow(BigInt(x) + BigInt(y), checked(x + y)) | ||
| } | ||
| } | ||
|
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| property("Int subtraction overflow throws arithmetic exception") { | ||
| forAll { (x: Int, y: Int) => | ||
| checkForIntOverflow(BigInt(x) - BigInt(y), checked(x - y)) | ||
| } | ||
| } | ||
|
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| property("Int multiplication overflow throws arithmetic exception") { | ||
| forAll { (x: Int, y: Int) => | ||
| checkForIntOverflow(BigInt(x) * BigInt(y), checked(x * y)) | ||
| } | ||
| } | ||
|
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| property("Int division overflow throws arithmetic exception") { | ||
| forAll { (x: Int, y: NotZero[Int]) => | ||
| checkForIntOverflow(BigInt(x) / BigInt(y.value), checked(x / y.value)) | ||
| } | ||
| } | ||
|
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| def distSq(x: Long, y: Long): BigInt = BigInt(x) * BigInt(x) + BigInt(y) * BigInt(y) | ||
|
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| property("Int euclidean square distance overflow throws arithmetic exception") { | ||
| forAll { (x: Int, y: Int) => | ||
| checkForIntOverflow(distSq(x, y), checked(x * x + y * y)) | ||
| } | ||
| } | ||
|
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| test("Negate of Long.MinValue overflows") { | ||
| val x = Long.MinValue | ||
| intercept[ArithmeticException] { checked(-x) } | ||
| } | ||
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| property("Long negate overflow throws arithmetic exception") { | ||
| forAll { (x: Long) => | ||
| checkForLongOverflow(-BigInt(x), checked(-x)) | ||
| } | ||
| } | ||
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| property("Long addition overflow throws arithmetic exception") { | ||
| forAll { (x: Long, y: Long) => | ||
| checkForLongOverflow(BigInt(x) + BigInt(y), checked(x + y)) | ||
| } | ||
| } | ||
|
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| property("Long subtraction overflow throws arithmetic exception") { | ||
| forAll { (x: Long, y: Long) => | ||
| checkForLongOverflow(BigInt(x) - BigInt(y), checked(x - y)) | ||
| } | ||
| } | ||
|
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| property("Long multiplication overflow throws arithmetic exception") { | ||
| forAll { (x: Long, y: Long) => | ||
| checkForLongOverflow(BigInt(x) * BigInt(y), checked(x * y)) | ||
| } | ||
| } | ||
|
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| property("Long division overflow throws arithmetic exception") { | ||
| forAll { (x: Long, y: NotZero[Long]) => | ||
| checkForLongOverflow(BigInt(x) / BigInt(y.value), checked(x / y.value)) | ||
| } | ||
| } | ||
|
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| property("Long euclidean square distance overflow throws arithmetic exception") { | ||
| forAll { (x: Long, y: Long) => | ||
| checkForLongOverflow(distSq(x, y), checked(x * x + y * y)) | ||
| } | ||
| } | ||
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| test("Int upgrades to Long for overflow checks when mixed in binary op") { | ||
| assertEquals(Checked.option { | ||
| val x = 2L | ||
| val y = Int.MaxValue | ||
| x + y | ||
| }, Some(Int.MaxValue.toLong + 2)) | ||
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| assertEquals(Checked.option { | ||
| val x = 2L | ||
| val y = Int.MaxValue | ||
| y + x | ||
| }, Some(Int.MaxValue.toLong + 2)) | ||
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| intercept[ArithmeticException] (checked { | ||
| val x = Long.MaxValue | ||
| val y = 2 | ||
| x * y | ||
| }) | ||
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| intercept[ArithmeticException] (checked { | ||
| val x = Long.MaxValue | ||
| val y = 2 | ||
| y * x | ||
| }) | ||
| } | ||
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| test("Byte and Short upgrade to Int when mixed") { | ||
| intercept[ArithmeticException] (checked { | ||
| val x = Int.MaxValue | ||
| val y = (2: Byte) | ||
| x * y | ||
| }) | ||
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| intercept[ArithmeticException] (checked { | ||
| val x = Int.MaxValue | ||
| val y = (2: Byte) | ||
| y * x | ||
| }) | ||
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| intercept[ArithmeticException] (checked { | ||
| val x = Int.MaxValue | ||
| val y = (2: Short) | ||
| x * y | ||
| }) | ||
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| intercept[ArithmeticException] (checked { | ||
| val x = Int.MaxValue | ||
| val y = (2: Short) | ||
| y * x | ||
| }) | ||
| } | ||
| } |
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