From c23943b41de55de9af249a3b231558ad23fc8087 Mon Sep 17 00:00:00 2001
From: Henry Cook
Date: Fri, 14 Aug 2015 01:51:39 -0700
Subject: Add Vec tests. Do a better job of generating widths.

---
 src/test/scala/chiselTests/BitwiseOps.scala | 36 ++++++++------------------
 src/test/scala/chiselTests/ChiselSpec.scala | 11 +++++++-
 src/test/scala/chiselTests/Vec.scala        | 39 +++++++++++++++++++++++++++++
 3 files changed, 59 insertions(+), 27 deletions(-)
 create mode 100644 src/test/scala/chiselTests/Vec.scala

(limited to 'src/test')

diff --git a/src/test/scala/chiselTests/BitwiseOps.scala b/src/test/scala/chiselTests/BitwiseOps.scala
index 5a1f1de8..1d668ebd 100644
--- a/src/test/scala/chiselTests/BitwiseOps.scala
+++ b/src/test/scala/chiselTests/BitwiseOps.scala
@@ -35,38 +35,22 @@ import org.scalatest._
 import org.scalatest.prop._
 import Chisel.testers.BasicTester
 
-class BitwiseOps(w: Int) extends Module {
-  val io = new Bundle {
-    val a = Bits(INPUT, w)
-    val b = Bits(INPUT, w)
-    val not = Bits(OUTPUT, w)
-    val and = Bits(OUTPUT, w)
-    val or  = Bits(OUTPUT, w)
-    val xor = Bits(OUTPUT, w)
-  }
-  io.not := ~io.a
-  io.and := io.a & io.b
-  io.or := io.a | io.b
-  io.xor := io.a ^ io.b
-}
-
 class BitwiseOpsSpec extends ChiselPropSpec {
 
-  class BitwiseOpsTester(w: Int, a: Int, b: Int) extends BasicTester {
-    val mask = (1 << w) - 1
-    val dut = Module(new BitwiseOps(w))
+  class BitwiseOpsTester(w: Int, _a: Int, _b: Int) extends BasicTester {
     io.done := Bool(true)
-    dut.io.a := UInt(a) 
-    dut.io.b := UInt(b)
-    when(dut.io.not != UInt(mask & ~a)) { io.error := UInt(1) }
-    when(dut.io.and != UInt(mask & (a & b))) { io.error := UInt(2) }
-    when(dut.io.or  != UInt(mask & (a | b))) { io.error := UInt(3) }
-    when(dut.io.xor != UInt(mask & (a ^ b))) { io.error := UInt(4) }
+    val mask = (1 << w) - 1
+    val a = UInt(_a) 
+    val b = UInt(_b)
+    when(~a != UInt(mask & ~_a)) { io.error := UInt(1) }
+    when((a & b) != UInt(mask & (_a & _b))) { io.error := UInt(2) }
+    when((a | b)  != UInt(mask & (_a | _b))) { io.error := UInt(3) }
+    when((a ^ b) != UInt(mask & (_a ^ _b))) { io.error := UInt(4) }
   }
 
   property("All bit-wise ops should return the correct result") {
-    forAll(safeUInts, safeUInts) { (a: Int, b: Int) =>
-      assert(execute{ new BitwiseOpsTester(32, a, b) }) 
+    forAll(safeUIntPair) { case(w: Int, a: Int, b: Int) =>
+      assert(execute{ new BitwiseOpsTester(w, a, b) }) 
     }
   }
 }
diff --git a/src/test/scala/chiselTests/ChiselSpec.scala b/src/test/scala/chiselTests/ChiselSpec.scala
index 3485b398..3d98d0a2 100644
--- a/src/test/scala/chiselTests/ChiselSpec.scala
+++ b/src/test/scala/chiselTests/ChiselSpec.scala
@@ -41,7 +41,7 @@ class ChiselPropSpec extends PropSpec with PropertyChecks {
   def popCount(n: Long) = n.toBinaryString.count(_=='1')
 
   val smallPosInts = Gen.choose(1, 7)
-  val safeUIntWidth = Gen.choose(1, 31) 
+  val safeUIntWidth = Gen.choose(1, 30) 
   val safeUInts = Gen.choose(0, (1 << 30))
   val vecSizes = Gen.choose(0, 4)
   val binaryString = for(i <- Arbitrary.arbitrary[Int]) yield "b" + i.toBinaryString
@@ -51,10 +51,19 @@ class ChiselPropSpec extends PropSpec with PropertyChecks {
     w <- smallPosInts
     i <- Gen.containerOfN[List,Int](n, Gen.choose(0, (1 << w) - 1))
   } yield (w, i)
+  val safeUInt = for {
+    w <- smallPosInts
+    i <- Gen.choose(0, (1 << w) - 1)
+  } yield (w, i)
 
   def safeUIntPairN(n: Int) = for {
     w <- smallPosInts
     i <- Gen.containerOfN[List,Int](n, Gen.choose(0, (1 << w) - 1))
     j <- Gen.containerOfN[List,Int](n, Gen.choose(0, (1 << w) - 1))
   } yield (w, i zip j)
+  val safeUIntPair= for {
+    w <- smallPosInts
+    i <- Gen.choose(0, (1 << w) - 1)
+    j <- Gen.choose(0, (1 << w) - 1)
+  } yield (w, i, j)
 }
diff --git a/src/test/scala/chiselTests/Vec.scala b/src/test/scala/chiselTests/Vec.scala
new file mode 100644
index 00000000..47e4af2c
--- /dev/null
+++ b/src/test/scala/chiselTests/Vec.scala
@@ -0,0 +1,39 @@
+package chiselTests
+
+import Chisel._
+import org.scalatest._
+import org.scalatest.prop._
+import Chisel.testers.BasicTester
+
+class VecSpec extends ChiselPropSpec {
+
+  class ValueTester(w: Int, values: List[Int]) extends BasicTester {
+    io.done := Bool(true)
+    val v = Vec(values.map(UInt(_, width = w)))
+    io.error := v.zip(values).map { case(a,b) => 
+      a != UInt(b)
+    }.foldLeft(UInt(0))(_##_)
+  }
+
+  property("Vecs should be assignable") {
+    forAll(safeUIntN(8)) { case(w: Int, v: List[Int]) =>
+      assert(execute{ new ValueTester(w, v) })
+    }
+  }
+
+  class TabulateTester(w: Int, n: Int) extends BasicTester {
+    io.done := Bool(true)
+    val v = Vec(Range(0, n).map(i => UInt(i * 2)))
+    val x = Vec(Array.tabulate(n){ i => UInt(i * 2) })
+    val u = Vec.tabulate(n)(i => UInt(i*2))
+    when(v.toBits != x.toBits) { io.error := UInt(1) }
+    when(v.toBits != u.toBits) { io.error := UInt(2) }
+    when(x.toBits != u.toBits) { io.error := UInt(3) }
+  }
+
+  property("Vecs should tabulate correctly") {
+    forAll(smallPosInts) { (n: Int) =>
+      assert(execute{ new TabulateTester(n) })
+    }
+  }
+}
-- 
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