access: Add tests.

* tests/test-access.c: New file.
* modules/access-tests: New file.

3 files changed, 97 insertions, 0 deletions

diff --git a/ChangeLog b/ChangeLog
index b85c3ddea6..394dcd51bc 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,9 @@
 2019-09-15  Bruno Haible  <bruno@clisp.org>
 
+	access: Add tests.
+	* tests/test-access.c: New file.
+	* modules/access-tests: New file.
+
 	access: New module.
 	* lib/unistd.in.h (access): New declaration.
 	* lib/access.c: New file.
diff --git a/modules/access-tests b/modules/access-tests
new file mode 100644
index 0000000000..082aeb58b1
--- /dev/null
+++ b/modules/access-tests
@@ -0,0 +1,13 @@
+Files:
+tests/test-access.c
+tests/signature.h
+tests/macros.h
+
+Depends-on:
+creat
+
+configure.ac:
+
+Makefile.am:
+TESTS += test-access
+check_PROGRAMS += test-access
diff --git a/tests/test-access.c b/tests/test-access.c
new file mode 100644
index 0000000000..7af7f9a239
--- /dev/null
+++ b/tests/test-access.c
@@ -0,0 +1,80 @@
+/* Tests of access.
+   Copyright (C) 2019 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+#include <unistd.h>
+
+#include "signature.h"
+SIGNATURE_CHECK (access, int, (const char *, int));
+
+#include <errno.h>
+#include <fcntl.h>
+#include <sys/stat.h>
+#include "macros.h"
+
+#define BASE "test-access.t"
+
+int
+main ()
+{
+  /* Remove anything from prior partial run.  */
+  unlink (BASE "f");
+  unlink (BASE "f1");
+  unlink (BASE "f2");
+
+  {
+    errno = 0;
+    ASSERT (access (BASE "f", R_OK) == -1);
+    ASSERT (errno == ENOENT);
+
+    errno = 0;
+    ASSERT (access (BASE "f", W_OK) == -1);
+    ASSERT (errno == ENOENT);
+
+    errno = 0;
+    ASSERT (access (BASE "f", X_OK) == -1);
+    ASSERT (errno == ENOENT);
+  }
+  {
+    ASSERT (close (creat (BASE "f1", 0700)) == 0);
+
+    ASSERT (access (BASE "f1", R_OK) == 0);
+    ASSERT (access (BASE "f1", W_OK) == 0);
+    ASSERT (access (BASE "f1", X_OK) == 0);
+  }
+  {
+    ASSERT (close (creat (BASE "f2", 0600)) == 0);
+    ASSERT (chmod (BASE "f2", 0400) == 0);
+
+    ASSERT (access (BASE "f2", R_OK) == 0);
+
+    errno = 0;
+    ASSERT (access (BASE "f2", W_OK) == -1);
+    ASSERT (errno == EACCES);
+
+#if defined _WIN32 && !defined __CYGWIN__
+    /* X_OK works like R_OK.  */
+    ASSERT (access (BASE "f2", X_OK) == 0);
+#else
+    errno = 0;
+    ASSERT (access (BASE "f2", X_OK) == -1);
+    ASSERT (errno == EACCES);
+#endif
+  }
+
+  return 0;
+}