--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,9 @@
+2011-09-01  Bruno Haible  <bruno@clisp.org>
+
+	Tests for module 'imaxabs'.
+	* modules/imaxabs-tests: New file.
+	* tests/test-imaxabs.c: New file.
+
 2011-09-01  Bruno Haible  <bruno@clisp.org>
 
 	pthread: Determine $(LIB_PTHREAD) correctly on IRIX 6.5.

new file mode 100644
--- /dev/null
+++ b/modules/imaxabs-tests
@@ -0,0 +1,12 @@
+Files:
+tests/test-imaxabs.c
+tests/signature.h
+tests/macros.h
+
+Depends-on:
+
+configure.ac:
+
+Makefile.am:
+TESTS += test-imaxabs
+check_PROGRAMS += test-imaxabs

new file mode 100644
--- /dev/null
+++ b/tests/test-imaxabs.c
@@ -0,0 +1,43 @@
+/*
+ * Copyright (C) 2011 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 <http://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+#include <inttypes.h>
+
+#include "signature.h"
+SIGNATURE_CHECK (imaxabs, intmax_t, (intmax_t));
+
+#include "macros.h"
+
+int
+main (void)
+{
+  {
+    intmax_t result = imaxabs (0);
+    ASSERT (result == 0);
+  }
+  {
+    intmax_t result = imaxabs (23);
+    ASSERT (result == 23);
+  }
+  {
+    intmax_t result = imaxabs (-23);
+    ASSERT (result == 23);
+  }
+
+  return 0;
+}