diff --git a/Makefile.am b/Makefile.am
index f65517f..591fd16 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -1,17 +1,20 @@
-include $(top_srcdir)/build-aux/glib-tap.mk
-
 AM_CFLAGS = # CFLAGS applicable to all executables (products)
+AM_CPPFLAGS = -I$(top_srcdir)/src # so that tests also find header files
 
-# Convenience library so that it can be resued 
+# Convenience library so that it can be resued
 # between my_executable and the tests
 noinst_LIBRARIES = libcommon.a
 libcommon_a_SOURCES = src/common.h src/common.c
 # src/common.h appear in SOURCES to that it gets copied to
 # distribution tgz.
 
-# The main product 
-bin_PROGRAMS = myexecutable # make all will generate ./my_executable 
+# The main product
+bin_PROGRAMS = myexecutable # make all will generate ./my_executable
+
+#include .c and .h in SOURCES so that both appear in dist
 myexecutable_SOURCES = \
+											 src/add.c \
+											 src/add.h \
                        src/main.c
 myexecutable_CFLAGS = $(AM_CFLAGS) #--std=c11 # CFLAGS applicable to myexecutable_SOURCES
 myexecutable_LDADD = libcommon.a
@@ -21,17 +24,11 @@ myexecutable_LDADD = libcommon.a
 # Tests
 # 'check' comes from 'make check'
 
-test_programs = testsuite
+check_PROGRAMS =  add.ctaptest
+TESTS = add.ctaptest
+
+add_ctaptest_SOURCES = tests/add.c src/add.c src/add.h
+add_ctaptest_CPPFLAGS = $(AM_CPPFLAGS) # so that tests find the header files
 
-testsuite_SOURCES = tests/test.c
-
-# In this case the testsuite (test.c) requires glib2.0
-# for the g_test_* test harness. glib2.0 requires specific
-# CFLAGS and -l options that are retrieved from pkg-config (configure.ac)
-# DEPS_CFLAGS and DEPS_LIBS are filled by PKG_CHECK_MODULES (configure.ac)
-
-testsuite_CPPFLAGS = -I$(top_srcdir)/src
-testsuite_CFLAGS = $(AM_CFLAGS) $(GLIB_CFLAGS) # DEPS_* are filled by PKG_CHECK_MODULES 
-testsuite_LDADD = $(GLIB_LIBS) libcommon.a    # in configure.ac
 
 
diff --git a/configure.ac b/configure.ac
index 0d41a4c..a8e415b 100644
--- a/configure.ac
+++ b/configure.ac
@@ -4,7 +4,6 @@
 AC_PREREQ([2.69])
 AC_INIT([FULL-PACKAGE-NAME], [VERSION], [BUG-REPORT-ADDRESS])
 AC_CONFIG_AUX_DIR([build-aux])
-AM_PATH_GLIB_2_0
 AM_INIT_AUTOMAKE([foreign subdir-objects]) # Does not require NEWS, COPYING, AUTHORS, ChangeLog or README
 
 # silent make https://autotools.io/automake/silent.html
@@ -14,7 +13,7 @@ AM_SILENT_RULES([yes]) # less verbose make output
 # AM_SILENT_RULES() # use make -s to get silent output
 
 AC_CONFIG_SRCDIR([src/main.c])
-AC_CONFIG_HEADERS([config.h])
+AC_CONFIG_HEADERS([config.h]) # use config.h instead of passing -D in the command line
 AC_CONFIG_MACRO_DIR([build])
 
 AC_LANG([C]) # Use C not C++
@@ -80,7 +79,6 @@ Are you sure that you want to have myfeature disabled? You will lose this and th
 fi
 
 AC_CONFIG_FILES([Makefile])
-GLIB_TESTS
 AC_REQUIRE_AUX_FILE([tap-driver.sh])
 AC_REQUIRE_AUX_FILE([tap-test])
 AC_OUTPUT
diff --git a/src/add.c b/src/add.c
new file mode 100644
index 0000000..f9049d6
--- /dev/null
+++ b/src/add.c
@@ -0,0 +1,5 @@
+#include "add.h"
+
+int add(int a, int b) {
+  return a + b;
+}
diff --git a/src/add.h b/src/add.h
new file mode 100644
index 0000000..085b06e
--- /dev/null
+++ b/src/add.h
@@ -0,0 +1,6 @@
+#ifndef ADD_H
+#define ADD_H
+
+int add(int a,int b);
+
+#endif /* ADD_H */
diff --git a/tests/add.c b/tests/add.c
new file mode 100644
index 0000000..8a774e4
--- /dev/null
+++ b/tests/add.c
@@ -0,0 +1,30 @@
+#include "minunit.h"
+#include "add.h"
+#include <stdlib.h> /* exit() */
+#include <stdio.h> /* perror(), printf(), fprintf() */
+
+
+int tests_run=0;
+
+char * add_test() {
+  mu_assert("add(1,2) must produce 3", add(1,2) == 4);
+  return 0;
+}
+
+char * all_tests() {
+  mu_run_test(add_test);
+  return 0;
+}
+
+int main(int argc, char *argv[])
+{
+  char *result = all_tests();
+  if (result) {
+    printf("FAILURE\n");
+    exit(1);
+  }
+  printf("ALL TESTS PASSED");
+
+
+  return 0;
+}
diff --git a/tests/minunit.h b/tests/minunit.h
new file mode 100644
index 0000000..40a61db
--- /dev/null
+++ b/tests/minunit.h
@@ -0,0 +1,8 @@
+#ifndef MINUNIT_H
+#define MINUNIT_H
+
+extern int tests_run;
+#define mu_assert(message,test) do { if (!(test)) return message; } while (0)
+#define mu_run_test(test) do { char *result = test(); tests_run++; if (result) return result; } while (0)
+
+#endif /* MINUNIT_H */