libffi: add test

1 files changed, 61 insertions, 1 deletions

diff --git a/Library/Formula/libffi.rb b/Library/Formula/libffi.rb
index c82ff9304..fa8564830 100644
--- a/Library/Formula/libffi.rb
+++ b/Library/Formula/libffi.rb
@@ -12,7 +12,67 @@ class Libffi < Formula
 
   def install
     ENV.universal_binary
-    system "./configure", "--prefix=#{prefix}", "--disable-debug", "--disable-dependency-tracking"
+    system "./configure", "--disable-debug", "--disable-dependency-tracking",
+                          "--prefix=#{prefix}"
     system "make install"
   end
+
+  test do
+    (testpath/'closure.c').write <<-TEST_SCRIPT.undent
+     #include <stdio.h>
+     #include <ffi.h>
+
+     /* Acts like puts with the file given at time of enclosure. */
+     void puts_binding(ffi_cif *cif, unsigned int *ret, void* args[],
+                       FILE *stream)
+     {
+       *ret = fputs(*(char **)args[0], stream);
+     }
+
+     int main()
+     {
+       ffi_cif cif;
+       ffi_type *args[1];
+       ffi_closure *closure;
+
+       int (*bound_puts)(char *);
+       int rc;
+
+       /* Allocate closure and bound_puts */
+       closure = ffi_closure_alloc(sizeof(ffi_closure), &bound_puts);
+
+       if (closure)
+         {
+           /* Initialize the argument info vectors */
+           args[0] = &ffi_type_pointer;
+
+           /* Initialize the cif */
+           if (ffi_prep_cif(&cif, FFI_DEFAULT_ABI, 1,
+                            &ffi_type_uint, args) == FFI_OK)
+             {
+               /* Initialize the closure, setting stream to stdout */
+               if (ffi_prep_closure_loc(closure, &cif, puts_binding,
+                                        stdout, bound_puts) == FFI_OK)
+                 {
+                   rc = bound_puts("Hello World!");
+                   /* rc now holds the result of the call to fputs */
+                 }
+             }
+         }
+
+       /* Deallocate both closure, and bound_puts */
+       ffi_closure_free(closure);
+
+       return 0;
+     }
+    TEST_SCRIPT
+
+    cellar = `brew --prefix libffi`.chomp
+    ENV['PKG_CONFIG_PATH'] = "#{cellar}/lib/pkgconfig/"
+    flags = *`pkg-config --cflags --libs libffi`.split
+    flags += ENV.cflags.split
+    ohai flags
+    system ENV.cc, "-o", "closure", "closure.c", *flags
+    system "./closure"
+  end
 end