ex29 extra credit

lcthw-remnants-2/ex29/tests/ex29_tests.c

@@ -0,0 +1,48 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include "dbg.h"
+#include <dlfcn.h>
+
+typedef int (*lib_function)(const char *data, int count);
+
+int test_ex29(char *lib_file, char *func_to_run, char *data)
+{
+  int rc = 0;
+
+  void *lib = dlopen(lib_file, RTLD_NOW);
+  check(lib != NULL, "Failed to open the library %s: %s", lib_file, dlerror());
+
+  lib_function func = dlsym(lib, func_to_run);
+  check(func != NULL, "Did not find %s function in the library %s: %s", func_to_run, lib_file, dlerror());
+
+  rc = func(data, (int)strlen(data));
+  check(rc == 0, "Function %s return %d for data: %s", func_to_run, rc, data);
+
+  rc = dlclose(lib);
+  check(rc == 0, "Failed to close %s", lib_file);
+
+  return 0;
+
+error:
+  return 1;
+}
+
+int main()
+{
+  char *dllib = getenv("EX29_DLLIB");
+  if(dllib == NULL) {
+    dllib = "build/libex29.so";
+  }
+
+  check(test_ex29(dllib, "print_a_message", "hello there") == 0, "print failed");
+  check(test_ex29(dllib, "uppercase", "hello there") == 0, "uppercase failed");
+  check(test_ex29(dllib, "lowercase", "HELLO tHeRe") == 0, "lowercase failed");
+  check(test_ex29(dllib, "fail_on_purpose", "i fail") == 1, "fail failed to fail");
+  check(test_ex29(dllib, "fail_on_purpose", "") == 1, "fail failed to fail");
+  check(test_ex29(dllib, "adfasfasdf", "asdfadff") == 1, "adfasfasdf failed to fail");
+  check(test_ex29("libex.so", "adfasfasdf", "asdfadff") == 1, "libex failed to fail");
+
+  return 0;
+error:
+  return 1;
+}

lcthw-remnants-2/ex29/tests/runtests.sh

@@ -0,0 +1,19 @@
+echo "Running unit tests:"
+
+for i in tests/*_tests
+do
+  if test -f $i
+  then
+    if $VALGRIND ./$i 2>> tests/tests.log
+    then
+      echo $i PASS
+    else
+      echo "ERROR in test $i: here's tests/tests.log"
+      echo "------"
+      tail tests/tests.log
+      exit 1
+    fi
+  fi
+done
+
+echo ""