#413 Write fault monitor test for rm46.

hil/tests/rm46.cpp

@@ -0,0 +1,73 @@
+/*
+@brief Fault monitor test for rm46. Test verifies that the rm46 can run continuously for at least 60 seconds without
+resetting. Reads timestamp of log at the beginning of test, waits for 90 seconds, then checks logs to ensure system
+remained operational during the time period. Test passes if RM46 produces logs covering the full time window and fails
+if there is a crash or reset during the period.
+
+@note Please test with code where there is a segfault, and where there is stable code. Ensure test fails for segfault
+and passes for main.
+*/
+// local library imports
+/* TODO: include a log reader or direct communicate with rm46 ? */
+
+// external library imports
+#include <gtest/gtest.h>
+
+// standard library imports
+#include <chrono>
+#include <thread>
+#include <iostream>
+#include <unistd.h>
+#include <fstream>
+#include <string>
+
+#define MIN_LOGS_AQUIRED 2
+#define LOG_FILE "foo.txt" /* some log file*/
+#define DELAY_PERIOD_SECONDS 90
+
+/**
+ * TODO: Implement this function
+ * @brief Parses rm46 log line for timestamp using regex.
+ *
+ * @param line - line to parse.
+ * @return Returns the timestamp in seconds.
+ */
+unsigned int parseTimeStamp(std::string line) {
+  // some regex stuff
+  unsigned int timeStampSeconds = 69;
+  return timeStampSeconds;
+}
+
+TEST(/*FaultMonitorTask, rm46_logs*/) {
+  std::ifstream read;
+  read.open(LOG_FILE);
+  ASSERT_TRUE(read.is_open()); /* log must open */
+
+  std::string line;
+  std::getline(read, line);
+  ASSERT_FALSE(line.empty()); /* log must be non-empty */
+
+  // TO DO: Implement a parse time function from logs
+  unsigned int initialTime = parseTimeStamp(line); /* some time */
+
+  read.close();
+
+  std::this_thread::sleep_for(std::chrono::seconds(DELAY_PERIOD_SECONDS)); /* make current thread sleep for 90s */
+
+  read.open(LOG_FILE);
+  ASSERT_TRUE(read.is_open());
+
+  bool passed{false};
+  while (std::getline(read, line)) {
+    unsigned int finalTime = parseTimeStamp(line);
+    if (finalTime - initialTime >= 60) {
+      passed = true;
+      break;
+    }
+    // automatically terminates if we reach the end.
+  };
+
+  EXPECT_TRUE(passed);
+
+  read.close();
+}