From 9fd2f21c38944c8a605020d6662bb5935c5bbee2 Mon Sep 17 00:00:00 2001
From: Kostis Sagonas <kostis@it.uu.se>
Date: Mon, 3 Mar 2014 01:40:39 +0100
Subject: First part of the basic test suite for the HiPE compiler

---
 lib/hipe/test/basic_SUITE_data/basic_guards.erl | 58 +++++++++++++++++++++++++
 1 file changed, 58 insertions(+)
 create mode 100644 lib/hipe/test/basic_SUITE_data/basic_guards.erl

(limited to 'lib/hipe/test/basic_SUITE_data/basic_guards.erl')

diff --git a/lib/hipe/test/basic_SUITE_data/basic_guards.erl b/lib/hipe/test/basic_SUITE_data/basic_guards.erl
new file mode 100644
index 0000000000..50c0ddd972
--- /dev/null
+++ b/lib/hipe/test/basic_SUITE_data/basic_guards.erl
@@ -0,0 +1,58 @@
+%%% -*- erlang-indent-level: 2 -*-
+%%%-------------------------------------------------------------------
+%%% Author: Kostis Sagonas
+%%%
+%%% Contains tests for correct handling of guards and guard BIFs.
+%%%-------------------------------------------------------------------
+-module(basic_guards).
+
+-export([test/0]).
+
+test() ->
+  ok = guard0(4.2),
+  ok = guard1([foo]),
+  ok = test_guard2(),
+  ok = test_guard3(),
+  ok.
+
+%%--------------------------------------------------------------------
+
+guard0(X) when X /= 0, is_float(X) ->
+  ok.
+
+guard1(X) when is_atom(X) orelse is_float(X) ->
+  error1;
+guard1(X) when is_reference(hd(X)) ->
+  error2;
+guard1(X) when is_integer(hd(X)) ->
+  error3;
+guard1(X) when hd(X) == foo ->
+  ok.
+
+%%--------------------------------------------------------------------
+
+test_guard2() ->
+  ok1 = guard2(true),
+  not_boolean = guard2(42),
+  ok2 = guard2(false),  
+  ok.
+
+guard2(X) when X ->  % gets transformed to:  is_boolean(X), X =:= true
+  ok1;
+guard2(X) when X =:= false ->
+  ok2;
+guard2(_) ->
+  not_boolean.
+
+%%--------------------------------------------------------------------
+
+-define(is_foo(X), (is_atom(X) or (is_tuple(X) and (element(1, X) =:= 'foo')))).
+   
+test_guard3() ->
+  no  = f('foo'),
+  yes = f({'foo', 42}),
+  no  = f(42),
+  ok.
+
+f(X) when ?is_foo(X) -> yes;
+f(_) -> no.
-- 
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