Test cases for SI-5726, SI-5733, SI-6320, SI-6551, SI-6722.

All tickets involving selectDynamic fixed by the prior commit.
It also fixes SI-6663, but that already has a test case.

Author: paulp

test/files/pos/t5726.scala

@@ -0,0 +1,17 @@
+import scala.language.dynamics
+
+class DynamicTest extends Dynamic {
+  def selectDynamic(name: String) = s"value of $name"
+  def updateDynamic(name: String)(value: Any) {
+    println(s"You have just updated property '$name' with value: $value")
+  }
+}
+
+object MyApp extends App {
+  def testing() {
+    val test = new DynamicTest
+    test.firstName = "John"
+  }
+
+  testing()
+}

test/files/pos/t6551.scala

@@ -1,4 +1,4 @@
-import language.dynamics
+import scala.language.dynamics
 
 object Test {
   def main(args: Array[String]) {

test/files/pos/t6722.scala

@@ -0,0 +1,11 @@
+import scala.language.dynamics
+
+class Dyn extends Dynamic {
+  def selectDynamic(s: String): Dyn = new Dyn
+  def get[T]: T = null.asInstanceOf[T]
+}
+
+object Foo {
+  val dyn = new Dyn
+  dyn.foo.bar.baz.get[String]
+}

test/files/run/t5733.check

@@ -0,0 +1,2 @@
+Running ABTest asserts
+Done

test/files/run/t5733.scala

@@ -0,0 +1,53 @@
+import scala.language.dynamics
+
+object A extends Dynamic {
+  var a = "a"
+
+  def selectDynamic(method:String): String = a
+
+  def updateDynamic(method:String)(v:String) { a = v }
+}
+
+class B extends Dynamic {
+  var b = "b"
+
+  def selectDynamic(method:String): String = b
+
+  def updateDynamic(method:String)(v:String) { b = v }
+}
+
+object Test extends App {
+  assert( A.foo == "a" )
+  assert( A.bar == "a" )
+  A.aaa = "aaa"
+  assert( A.bar == "aaa" )
+
+  val b = new B
+  assert( b.foo == "b" )
+  assert( b.bar == "b" )
+  b.bbb = "bbb"
+  assert( b.bar == "bbb" )
+
+  {
+    println("Running ABTest asserts")
+    A.a = "a"
+    (new ABTest).test()
+  }
+
+  println("Done")
+}
+
+class ABTest {
+  def test() {
+    assert( A.foo == "a" )
+    assert( A.bar == "a" )
+    A.aaa = "aaa"
+    assert( A.bar == "aaa" )
+
+    val b = new B
+    assert( b.foo == "b" )
+    assert( b.bar == "b" )
+    b.bbb = "bbb"
+    assert( b.bar == "bbb" )
+  }
+}

test/files/run/t6320.check

@@ -0,0 +1,17 @@
+Type in expressions to have them evaluated.
+Type :help for more information.
+
+scala> 
+
+scala> import scala.language.dynamics
+import scala.language.dynamics
+
+scala> class Dyn(m: Map[String, Any]) extends Dynamic { def selectDynamic[T](s: String): T = m(s).asInstanceOf[T] }
+defined class Dyn
+
+scala> new Dyn(Map("foo" -> 10)).foo[Int]
+res0: Int = 10
+
+scala> 
+
+scala> 

test/files/run/t6320.scala

@@ -0,0 +1,9 @@
+import scala.tools.partest.ReplTest
+
+object Test extends ReplTest {
+  def code = """
+import scala.language.dynamics
+class Dyn(m: Map[String, Any]) extends Dynamic { def selectDynamic[T](s: String): T = m(s).asInstanceOf[T] }
+new Dyn(Map("foo" -> 10)).foo[Int]
+  """
+}