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package chiselTests
import Chisel._
import org.scalatest._
import org.scalatest.prop._
import Chisel.testers.BasicTester
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 = new Bundle {
val e = new Bool(INPUT)
val in = new Complex(UInt(width = w), UInt(width = w)).asInput
val out = new Complex(UInt(width = w), UInt(width = w)).asOutput
}
when (io.e) {
val tmp = Wire(new Complex(UInt(width = w), UInt(width = w)))
tmp := io.in
io.out.re := tmp.re
io.out.im := tmp.im
} .otherwise {
io.out.re := UInt(0)
io.out.im := UInt(0)
}
}
class ComplexAssignSpec extends ChiselPropSpec {
class ComplexAssignTester(enList: List[Boolean], re: Int, im: Int) extends BasicTester {
val (cnt, wrap) = Counter(Bool(true), enList.size)
val dut = Module(new ComplexAssign(32))
dut.io.in.re := UInt(re)
dut.io.in.im := UInt(im)
dut.io.e := Vec(enList.map(Bool(_)))(cnt)
val re_correct = dut.io.out.re === Mux(dut.io.e, dut.io.in.re, UInt(0))
val im_correct = dut.io.out.im === Mux(dut.io.e, dut.io.in.im, UInt(0))
when(!re_correct || !im_correct) {
io.done := Bool(true); io.error := cnt
} .elsewhen(wrap) { io.done := Bool(true) }
}
property("All complex assignments should return the correct result") {
forAll(enSequence(4), safeUInts, safeUInts) { (en: List[Boolean], re: Int, im: Int) =>
assert(execute{ new ComplexAssignTester(en, re, im) })
}
}
}
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