Initial integration of Cmocka (not finished)

test/session/CMakeLists.txt

@@ -0,0 +1,12 @@
+add_executable(session_app
+    session.c
+)
+
+target_link_libraries(session_app
+    cmocka
+    session
+)
+
+target_link_options(session_app PRIVATE -Wl,--wrap=read)
+
+add_test(session_test session_app)

test/session/session.c

@@ -0,0 +1,35 @@
+#include <cmocka.h>
+#include <setjmp.h>
+#include <stdarg.h>
+#include <stddef.h>
+#include <stdio.h>
+#include <stdlib.h>
+
+#include <session.h>
+#include "../../src/main.h"
+
+#define TEST_BUF "Hello world!\n"
+
+int __wrap_read(int fd, void *buf, size_t nbytes) {
+    return sizeof TEST_BUF - 1;
+}
+ 
+void test_session_do_read(void** state) { 
+    session sess = {
+        .buf = TEST_BUF,
+        .buf_used = sizeof TEST_BUF,
+        .sd = 2,
+    };
+    char *str;
+    session_do_read(NULL, &str);
+    assert_memory_equal(str, TEST_BUF, sizeof (TEST_BUF)-1);
+}
+
+int setup(void **state) { return 0; }
+int tear_down(void **state) { return 0; }
+
+int main(int argc, char **argv) {
+  const struct CMUnitTest tests[] = {cmocka_unit_test(test_session_do_read)};
+
+  return cmocka_run_group_tests(tests, setup, tear_down);
+}