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// See LICENSE for license details.
package chiselTests
import org.scalatest._
import chisel3._
import chisel3.testers.BasicTester
import chisel3.util._
class FailingAssertTester() extends BasicTester {
assert(Bool(false))
// Wait to come out of reset
val (_, done) = Counter(!reset, 4)
when (done) {
stop()
}
}
class SucceedingAssertTester() extends BasicTester {
assert(Bool(true))
// Wait to come out of reset
val (_, done) = Counter(!reset, 4)
when (done) {
stop()
}
}
class PipelinedResetModule extends Module {
val io = IO(new Bundle { })
val a = Reg(init = UInt(0xbeef))
val b = Reg(init = UInt(0xbeef))
assert(a === b)
}
// This relies on reset being asserted for 3 or more cycles
class PipelinedResetTester extends BasicTester {
val module = Module(new PipelinedResetModule)
module.reset := Reg(next = Reg(next = Reg(next = reset)))
val (_, done) = Counter(!reset, 4)
when (done) {
stop()
}
}
class AssertSpec extends ChiselFlatSpec {
"A failing assertion" should "fail the testbench" in {
assert(!runTester{ new FailingAssertTester })
}
"A succeeding assertion" should "not fail the testbench" in {
assertTesterPasses{ new SucceedingAssertTester }
}
"An assertion" should "not assert until we come out of reset" in {
assertTesterPasses{ new PipelinedResetTester }
}
}
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