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// See LICENSE for license details.
package firrtlTests
import java.io.{StringWriter,Writer}
import org.scalatest.{FlatSpec, Matchers}
import org.scalatest.junit.JUnitRunner
import firrtl.ir.Circuit
import firrtl.Parser.UseInfo
import firrtl.passes.{Pass, PassExceptions, RemoveEmpty}
import firrtl._
import firrtl.annotations._
import logger._
// An example methodology for testing Firrtl Passes
// Spec class should extend this class
abstract class SimpleTransformSpec extends FlatSpec with FirrtlMatchers with Compiler with LazyLogging {
// Utility function
def squash(c: Circuit): Circuit = RemoveEmpty.run(c)
// Executes the test. Call in tests.
// annotations cannot have default value because scalatest trait Suite has a default value
def execute(input: String, check: String, annotations: Seq[Annotation]): CircuitState = {
val finalState = compileAndEmit(CircuitState(parse(input), ChirrtlForm, annotations))
val actual = RemoveEmpty.run(parse(finalState.getEmittedCircuit.value)).serialize
val expected = parse(check).serialize
logger.debug(actual)
logger.debug(expected)
(actual) should be (expected)
finalState
}
// Executes the test, should throw an error
// No default to be consistent with execute
def failingexecute(input: String, annotations: Seq[Annotation]): Exception = {
intercept[PassExceptions] {
compile(CircuitState(parse(input), ChirrtlForm, annotations), Seq.empty)
}
}
}
class CustomResolveAndCheck(form: CircuitForm) extends SeqTransform {
def inputForm = form
def outputForm = form
def transforms: Seq[Transform] = Seq[Transform](new ResolveAndCheck)
}
trait LowTransformSpec extends SimpleTransformSpec {
def emitter = new LowFirrtlEmitter
def transform: Transform
def transforms: Seq[Transform] = Seq(
new ChirrtlToHighFirrtl(),
new IRToWorkingIR(),
new ResolveAndCheck(),
new HighFirrtlToMiddleFirrtl(),
new MiddleFirrtlToLowFirrtl(),
new CustomResolveAndCheck(LowForm),
transform
)
}
trait MiddleTransformSpec extends SimpleTransformSpec {
def emitter = new MiddleFirrtlEmitter
def transform: Transform
def transforms: Seq[Transform] = Seq(
new ChirrtlToHighFirrtl(),
new IRToWorkingIR(),
new ResolveAndCheck(),
new HighFirrtlToMiddleFirrtl(),
new CustomResolveAndCheck(MidForm),
transform
)
}
trait HighTransformSpec extends SimpleTransformSpec {
def emitter = new HighFirrtlEmitter
def transform: Transform
def transforms = Seq(
new ChirrtlToHighFirrtl(),
new IRToWorkingIR(),
new CustomResolveAndCheck(HighForm),
transform
)
}
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