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// See LICENSE for license details.
package Chisel.testers
import Chisel._
import internal._
import internal.Builder.pushCommand
import internal.firrtl._
class BasicTester extends Module {
// The testbench has no IOs, rather it should communicate using printf, assert, and stop.
val io = new Bundle()
def popCount(n: Long): Int = n.toBinaryString.count(_=='1')
/** Ends the test reporting success.
*
* Does not fire when in reset (defined as the encapsulating Module's
* reset). If your definition of reset is not the encapsulating Module's
* reset, you will need to gate this externally.
*/
def stop() {
when (!reset) {
pushCommand(Stop(Node(clock), 0))
}
}
/** The finish method provides a hook that subclasses of BasicTester can use to
* alter a circuit after their constructor has been called.
* For example, a specialized tester subclassing BasicTester could override finish in order to
* add flow control logic for a decoupled io port of a device under test
*/
def finish(): Unit = {}
}
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