From 10d868ce335d1ecbb0a6acb8d4bd804d76edcac9 Mon Sep 17 00:00:00 2001
From: Martin Odersky <odersky@gmail.com>
Date: Thu, 2 Mar 2017 18:14:24 +0100
Subject: More tests

and a typo fixed
---
 tests/pos/t5070.scala | 23 +++++++++++++++++++++++
 tests/pos/t5643.scala | 19 +++++++++++++++++++
 2 files changed, 42 insertions(+)
 create mode 100644 tests/pos/t5643.scala

(limited to 'tests/pos')

diff --git a/tests/pos/t5070.scala b/tests/pos/t5070.scala
index 410afba14..0e5c0ffc0 100644
--- a/tests/pos/t5070.scala
+++ b/tests/pos/t5070.scala
@@ -13,3 +13,26 @@ class Test {
 
   implicitly[a.T](b(a)) // works
 }
+
+
+class ImplicitVsTypeAliasTezt {
+
+    class Monad[m[_]] {
+        type For[a] = _For[m, a]
+        implicit def toFor[a](m: m[a]): For[a] = throw new Error("todo") // lookup fails
+//        implicit def toFor[a](m: m[a]): _For[m, a] = throw new Error("todo") // fine.
+    }
+
+    trait _For[m[_], a] {
+        def map[b](p: a => b): m[b]
+    }
+
+    def useMonad[m[_], a](m: m[a])(implicit i: Monad[m]) = {
+        import i._
+
+        // value map is not a member of type parameter m[a]
+        for {
+            x <- m
+        } yield x.toString
+    }
+}
diff --git a/tests/pos/t5643.scala b/tests/pos/t5643.scala
new file mode 100644
index 000000000..1ce34ba36
--- /dev/null
+++ b/tests/pos/t5643.scala
@@ -0,0 +1,19 @@
+object TupledEvidenceTest {
+
+  abstract class TupledEvidence[M[_], T0] { type T = T0 }
+
+  implicit def witnessTuple2[M[_], T1, T2](implicit ev1: M[T1], ev2: M[T2]):
+    TupledEvidence[M, (T1, T2)] { type T = (T1, T2) } = sys.error("")
+
+  class GetResult[T]
+
+  implicit val getString: GetResult[String] = new GetResult[String]
+
+  implicit def getTuple[T](implicit w: TupledEvidence[GetResult, T]): GetResult[w.T] = sys.error("")
+
+  def f[T : GetResult] = ""
+
+  f[(String,String)](getTuple[(String, String)])
+
+  f[(String,String)]
+}
-- 
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