Avoid warning in test

warning: this clause cannot match because a previous clause at line 8 always matches

Author: sabiwara

lib/elixir/test/elixir/kernel/with_test.exs

@@ -5,7 +5,6 @@ defmodule Kernel.WithTest do
 
   test "basic with" do
     assert with({:ok, res} <- ok(41), do: res) == 41
-    assert with(res <- four(), do: res + 10) == 14
   end
 
   test "matching with" do
@@ -14,6 +13,12 @@ defmodule Kernel.WithTest do
     assert with({:ok, _} = res <- ok(42), do: elem(res, 1)) == 42
   end
 
+  test "always matching clause in with" do
+    # using eval to avoid "clause cannot match" warning
+    assert {14, []} =
+             Code.eval_quoted(quote do: with(res <- 2 * 2, do: res + 10))
+  end
+
   test "with guards" do
     assert with(x when x < 2 <- four(), do: :ok) == 4
     assert with(x when x > 2 <- four(), do: :ok) == :ok