zadania/tieto-cpu-tracker/lib/log/tests/integration/Log.test.c

#include "log/Log.h"

#include <stdio.h>
#include <unistd.h>
#include <assert.h>

#define TAG "TEST"

static const char* LOG_FILE = "/tmp/log-test.log";

static int countLines(const char* filePath) {
  int count = 0;
  int ch;
  FILE* file = fopen(filePath, "r");
  if (file == NULL) {
      return -1;
  }
  while ((ch = fgetc(file)) != EOF) {
      if (ch == '\n') {
          count++;
      }
  }
  fclose(file);
  return count;
}


int main(void)
{
  int lineCount = 0;

  initLogger(LOG_FILE);
  clearLogs();
  
  lineCount = countLines(LOG_FILE);
  assert(lineCount == 0);
  
  writeLog(TAG, "First log message");
  writeLog(TAG, "Second log message");
  writeLog(TAG, "Third log message");
  
  lineCount = countLines(LOG_FILE);
  assert(lineCount == 3);

  writeLog(TAG, "This is %ith line that is %s", 4, "formatted");

  lineCount = countLines(LOG_FILE);
  assert(lineCount == 4);

  closeLogger();

  printf("Log file %s contains %d lines\n", LOG_FILE, lineCount);
  return 0;
}