src/test/scala/chiselTests/DecoupledSpec.scala


1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20

// SPDX-License-Identifier: Apache-2.0

package chiselTests

import chisel3._
import chisel3.stage.ChiselStage
import chisel3.util.Decoupled

class DecoupledSpec extends ChiselFlatSpec {
  "Decoupled() and Decoupled.empty" should "give DecoupledIO with empty payloads" in {
    ChiselStage.elaborate(new Module {
      val io = IO(new Bundle {
        val in = Flipped(Decoupled())
        val out = Decoupled.empty
      })
      io.out <> io.in
      assert(io.asUInt.widthOption.get === 4)
    })
  }
}