1 files changed, 92 insertions, 0 deletions
diff --git a/test/disabled/run/forvaleq.scala b/test/disabled/run/forvaleq.scala
new file mode 100644
index 0000000000..1e4fd33dbc
--- /dev/null
+++ b/test/disabled/run/forvaleq.scala
@@ -0,0 +1,92 @@
+// test "foo = expr" clauses in for comprehensions
+// $Id$
+
+import scala.collection.immutable.Queue
+import scala.{List=>L}
+
+object Test {
+  // redefine some symbols to make it extra hard
+  class List
+  class Tuple2
+  def List[A](as: A*) = 5
+
+  def firstDigit(x: Int): Int =
+    x match {
+    case 0 => 0
+    case _ if (x<0) => firstDigit(-x)
+    case _ if (x<10) => x
+    case _ => firstDigit(x / 10)
+  }
+
+
+  {
+    // a basic test case
+
+    val input = L.range(0,20)
+    val oddFirstTimesTwo =
+      for {x <- input
+           xf = firstDigit(x)
+           if xf % 2 == 1}
+        yield x*2
+    println(oddFirstTimesTwo)
+  }
+
+  {
+    // a test case with patterns
+
+    val input = L.range(0, 20)
+    val oddFirstTimesTwo =
+      for {x <- input
+           xf = firstDigit(x)
+           yf = x - firstDigit(x) / 10
+           (a, b) = (xf - yf, xf + yf)
+           if xf % 2 == 1}
+        yield a + b
+    println(oddFirstTimesTwo)
+  }
+
+  {
+    // make sure it works on non-Ls
+
+ //   val input: Queue = Queue.Empty[int].incl(L.range(0,20))
+    val input = L.range(0, 20).elements
+    val oddFirstTimesTwo =
+      for {x <- input
+          xf = firstDigit(x)
+          if xf % 2 == 1}
+        yield x*2
+    println(oddFirstTimesTwo.toList)
+  }
+
+  {
+    // yield the computed value
+
+    val input = L.range(0,20)
+    val oddFirstTimesTwo =
+      for {x <- input
+          xf = firstDigit(x)
+          if xf % 2 == 1}
+        yield xf*2
+    println(oddFirstTimesTwo)
+  }
+
+  {
+    // make sure the function is only called once
+    var count: Int = 0
+
+    def fdct(x: Int) = {
+      count += 1
+      firstDigit(x)
+    }
+
+    val input = L.range(0,20)
+    for {x <- input
+         xf = fdct(x)
+         if xf % 2 == 1}
+      yield xf
+
+    println("called " + count + " times")
+  }
+
+  def main(args: Array[String]) {}
+}