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// See LICENSE for license details.
package chiselTests
import chisel3._
import chisel3.testers.BasicTester
import chisel3.util._
import org.scalacheck.Shrink
class Complex[T <: Data](val re: T, val im: T) extends Bundle {
override def cloneType: this.type =
new Complex(re.cloneType, im.cloneType).asInstanceOf[this.type]
}
class ComplexAssign(w: Int) extends Module {
val io = IO(new Bundle {
val e = Input(Bool())
val in = Input(new Complex(UInt(w.W), UInt(w.W)))
val out = Output(new Complex(UInt(w.W), UInt(w.W)))
})
when (io.e) {
val tmp = Wire(new Complex(UInt(w.W), UInt(w.W)))
tmp := io.in
io.out.re := tmp.re
io.out.im := tmp.im
} .otherwise {
io.out.re := 0.U
io.out.im := 0.U
}
}
class ComplexAssignTester(enList: List[Boolean], re: Int, im: Int) extends BasicTester {
val (cnt, wrap) = Counter(true.B, enList.size)
val dut = Module(new ComplexAssign(32))
dut.io.in.re := re.asUInt
dut.io.in.im := im.asUInt
dut.io.e := VecInit(enList.map(_.asBool))(cnt)
val re_correct = dut.io.out.re === Mux(dut.io.e, dut.io.in.re, 0.U)
val im_correct = dut.io.out.im === Mux(dut.io.e, dut.io.in.im, 0.U)
assert(re_correct && im_correct)
when(wrap) {
stop()
}
}
class ComplexAssignSpec extends ChiselPropSpec {
property("All complex assignments should return the correct result") {
// Disable shrinking on error.
implicit val noShrinkListVal = Shrink[List[Boolean]](_ => Stream.empty)
implicit val noShrinkInt = Shrink[Int](_ => Stream.empty)
forAll(enSequence(2), safeUInts, safeUInts) { (en: List[Boolean], re: Int, im: Int) =>
assertTesterPasses{ new ComplexAssignTester(en, re, im) }
}
}
}
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