Add failing test case for contextual parameters

Author: zeptometer

tests/run-macros/i17105/Macro_1.scala

@@ -7,6 +7,8 @@ def testExprImpl(body: Expr[Any])(using Quotes): Expr[String] =
       '{ $a((z: String) => s"[1st case] ${z}") }
     case '{ def g(y: String)(z: String) = "placeholder" + y; $a(g): String } =>
       '{ $a((z1: String) => (z2: String) =>  s"[2nd case] ${z1}, ${z2}") }
+    case '{ def g(using s: String) = "placeholder"; $a(g) } =>
+      '{ $a((s: String) => s"[3rd case] ${s}") }
     case _ => Expr("not matched")
 
 // TODO issue-17105: Clean this up if not neccessary

tests/run-macros/i17105/Test_2.scala

@@ -3,3 +3,5 @@
   println("case curried: " + testExpr { def f(x: String)(y: String) = "placeholder" + x; f("arg1")("arg2") + " outside" })
   def outer() = " outer-method"
   println("case methods from outer scope: " + testExpr { def f(x: String) = "placeholder" + x; f("arg1") + outer() })
+  given String = "given"
+  println("case contextual params: " + testExpr { def f(using t: String) = "placeholder"; f + " outside" })