sample test file added

tests/Main.cpp

@@ -0,0 +1,66 @@
+/**
+ * /mnt/z/my_git/blowfish/src/Main.cpp
+ * @file Main.cpp
+ * @author Avinal Kumar
+ * @since March 06, 2021
+ *
+ * Test Program
+ */
+
+#include <iostream>
+
+#include <blowfish/blowfish.h>
+
+std::string from_uint(uint32_t sh) {
+  std::string re("");
+  for (int i = 0; i < 4; i++) {
+    re += (unsigned char)(sh >> i * 8);
+  }
+  return re;
+}
+
+int main(int argc, char const *argv[]) {
+  std::string key("test@pass47");
+  std::string message("My name is Avinal and I am cute");
+  std::string cipher("");
+  int len = message.length();
+  int j = sizeof(uint32_t);
+  int rem =
+      ((len > j * 2) ? (((len / j * 2) + 1) * j * 2 - len) : (j * 2 - len));
+  message.append(rem, '\0');
+  len = message.length();
+  Blowfish blowfish(key);
+  std::cout << "My message is: " << message << std::endl;
+  uint32_t lm, rm;
+  for (size_t i = 0; i < len; i += 8) {
+    lm = 0;
+    rm = 0;
+    lm = *reinterpret_cast<unsigned int *>(
+        const_cast<char *>(message.substr(i, j).c_str()));
+    rm = *reinterpret_cast<unsigned int *>(
+        const_cast<char *>(message.substr(i + 4, j).c_str()));
+    blowfish.encrypt(lm, rm);
+    cipher += from_uint(lm) + from_uint(rm);
+  }
+  std::cout << cipher << std::endl;
+  std::string decipher("");
+  len = cipher.length();
+  std::cout << "length: " << len << std::endl;
+  for (size_t i = 0; i < len; i += 8) {
+    lm = 0;
+    rm = 0;
+    lm = *reinterpret_cast<unsigned int *>(
+        const_cast<char *>(cipher.substr(i, 4).c_str()));
+    rm = *reinterpret_cast<unsigned int *>(
+        const_cast<char *>(cipher.substr(i + 4, 4).c_str()));
+    blowfish.decrypt(lm, rm);
+    decipher += from_uint(lm) + from_uint(rm);
+  }
+
+  std::cout << decipher << std::endl;
+  if (message == decipher) {
+    return 0;
+  } else {
+    return 1;
+  }
+}