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// See LICENSE for license details.
package chiselTests
import java.io.File
import org.scalatest._
import org.scalatest.prop._
import org.scalacheck._
import chisel3._
import chisel3.testers._
/** Common utility functions for Chisel unit tests. */
trait ChiselRunners extends Assertions {
def runTester(t: => BasicTester, additionalVResources: Seq[String] = Seq()): Boolean = {
TesterDriver.execute(() => t, additionalVResources)
}
def assertTesterPasses(t: => BasicTester, additionalVResources: Seq[String] = Seq()): Unit = {
assert(runTester(t, additionalVResources))
}
def assertTesterFails(t: => BasicTester, additionalVResources: Seq[String] = Seq()): Unit = {
assert(!runTester(t, additionalVResources))
}
def elaborate(t: => Module): Unit = Driver.elaborate(() => t)
}
/** Spec base class for BDD-style testers. */
class ChiselFlatSpec extends FlatSpec with ChiselRunners with Matchers
/** Spec base class for property-based testers. */
class ChiselPropSpec extends PropSpec with ChiselRunners with PropertyChecks with Matchers {
// Constrain the default number of instances generated for every use of forAll.
implicit override val generatorDrivenConfig =
PropertyCheckConfig(minSuccessful = 8, minSize = 1, maxSize = 4)
// Generator for small positive integers.
val smallPosInts = Gen.choose(1, 4)
// Generator for widths considered "safe".
val safeUIntWidth = Gen.choose(1, 30)
// Generators for integers that fit within "safe" widths.
val safeUInts = Gen.choose(0, (1 << 30))
// Generators for vector sizes.
val vecSizes = Gen.choose(0, 4)
// Generator for string representing an arbitrary integer.
val binaryString = for (i <- Arbitrary.arbitrary[Int]) yield "b" + i.toBinaryString
// Generator for a sequence of Booleans of size n.
def enSequence(n: Int): Gen[List[Boolean]] = Gen.containerOfN[List, Boolean](n, Gen.oneOf(true, false))
// Generator which gives a width w and a list (of size n) of numbers up to w bits.
def safeUIntN(n: Int): Gen[(Int, List[Int])] = for {
w <- smallPosInts
i <- Gen.containerOfN[List, Int](n, Gen.choose(0, (1 << w) - 1))
} yield (w, i)
// Generator which gives a width w and a numbers up to w bits.
val safeUInt = for {
w <- smallPosInts
i <- Gen.choose(0, (1 << w) - 1)
} yield (w, i)
// Generator which gives a width w and a list (of size n) of a pair of numbers up to w bits.
def safeUIntPairN(n: Int): Gen[(Int, List[(Int, Int)])] = for {
w <- smallPosInts
i <- Gen.containerOfN[List, Int](n, Gen.choose(0, (1 << w) - 1))
j <- Gen.containerOfN[List, Int](n, Gen.choose(0, (1 << w) - 1))
} yield (w, i zip j)
// Generator which gives a width w and a pair of numbers up to w bits.
val safeUIntPair = for {
w <- smallPosInts
i <- Gen.choose(0, (1 << w) - 1)
j <- Gen.choose(0, (1 << w) - 1)
} yield (w, i, j)
}
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