From cc02243fbe8b7290265e1bdf540e4c2f256df199 Mon Sep 17 00:00:00 2001
From: liu fengyun <liufengyunchina@gmail.com>
Date: Thu, 21 Jul 2016 10:45:14 +0200
Subject: add test set for exhaustivity and redundancy check

---
 tests/patmat/gadt.scala | 58 +++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 58 insertions(+)
 create mode 100644 tests/patmat/gadt.scala

(limited to 'tests/patmat/gadt.scala')

diff --git a/tests/patmat/gadt.scala b/tests/patmat/gadt.scala
new file mode 100644
index 000000000..0541ed61f
--- /dev/null
+++ b/tests/patmat/gadt.scala
@@ -0,0 +1,58 @@
+object Test {
+  sealed trait Expr[T]
+  case class IntLit(i: Int) extends Expr[Int]
+  case class BooleanLit(b: Boolean) extends Expr[Boolean]
+  case class Sum(l: Expr[Int], r: Expr[Int]) extends Expr[Int]
+  case class Or(l: Expr[Boolean], r: Expr[Boolean]) extends Expr[Boolean]
+
+  def foo1a(x: Expr[Int]) = x match {
+    case _: IntLit => true
+    case _: Sum => true
+  }
+
+  def foo1b(x: Expr[Int]) = x match {
+    case _: Sum => true
+  }
+
+  def foo2a(x: Expr[Boolean]) = x match {
+    case _: BooleanLit => true
+    case _: Or => true
+  }
+
+  def foo2b(x: Expr[Boolean]) = x match {
+    case _: BooleanLit => true
+  }
+
+  def foo3a(x: Expr[Boolean]) = x match {
+    case _: BooleanLit => true
+    case _: Or => true
+    // case _: Sum => true
+  }
+
+  def foo3b(x: Expr[Int]) = x match {
+    case _: IntLit => true
+    case _: Sum => true
+    // case _: Or => true
+  }
+
+  def foo4a(x: Expr[_]) = x match {
+    case _: IntLit => true
+    case _: Sum => true
+    case _: BooleanLit => true
+    case _: Or => true
+  }
+
+  def foo4b(x: Expr[_]) = x match {
+    case _: Sum => true
+    case _: Or => true
+  }
+
+  def foo5a[T <: Int](x: Expr[T]) = x match {
+    case _: IntLit => true
+    case _: Sum => true
+  }
+
+  def foo5b[T <: Int](x: Expr[T]) = x match {
+    case _: IntLit => true
+  }
+}
-- 
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