ci(tests): add test framework (#1603)

tests/utils.cpp

@@ -0,0 +1,21 @@
+/**
+ * @file utils.cpp
+ * @brief Utility functions
+ */
+
+#include "utils.h"
+
+/**
+ * @brief Set an environment variable.
+ * @param name Name of the environment variable
+ * @param value Value of the environment variable
+ * @return 0 on success, non-zero error code on failure
+ */
+int
+setEnv(const std::string &name, const std::string &value) {
+#ifdef _WIN32
+  return _putenv_s(name.c_str(), value.c_str());
+#else
+  return setenv(name.c_str(), value.c_str(), 1);
+#endif
+}