1 files changed, 18 insertions, 0 deletions
diff --git a/test/dl/test_func.rb b/test/dl/test_func.rb
index 5503f350c8..3900af3d5f 100644
--- a/test/dl/test_func.rb
+++ b/test/dl/test_func.rb
@@ -15,6 +15,24 @@ module DL
       assert_equal cfunc.to_i, f.to_i
     end
 
+    def test_random
+      f = Function.new(CFunc.new(@libc['srand'], TYPE_VOID, 'srand'),
+                       [-TYPE_LONG])
+      assert_nil f.call(10)
+    end
+
+    def test_sinf
+      f = Function.new(CFunc.new(@libm['sinf'], TYPE_FLOAT, 'sinf'),
+                       [TYPE_FLOAT])
+      assert_in_delta 1.0, f.call(90 * Math::PI / 180), 0.0001
+    end
+
+    def test_sin
+      f = Function.new(CFunc.new(@libm['sin'], TYPE_DOUBLE, 'sin'),
+                       [TYPE_DOUBLE])
+      assert_in_delta 1.0, f.call(90 * Math::PI / 180), 0.0001
+    end
+
     def test_strcpy()
       f = Function.new(CFunc.new(@libc['strcpy'], TYPE_VOIDP, 'strcpy'),
                        [TYPE_VOIDP, TYPE_VOIDP])