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//
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// notice, this list of conditions and the following disclaimer.
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// copyright notice, this list of conditions and the following disclaimer
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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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//
// This file tests EXPECT_EQ works when used with type that has overloaded &
// operator.

#include <gtest/gtest.h>
#include <string>

class string_ref;

/**
 * This is a synthetic pointer to a fixed size string.
 */
class string_ptr {
 public:
  string_ptr(const char *data, size_t size) : data_(data), size_(size) {}

  string_ptr &operator++() noexcept {
    data_ += size_;
    return *this;
  }

  string_ref operator*() const noexcept;

 private:
  const char *data_;
  size_t size_;
};

/**
 * This is a synthetic reference of a fixed size string.
 */
class string_ref {
 public:
  string_ref(const char *data, size_t size) : data_(data), size_(size) {}

  string_ptr operator&() const noexcept { return {data_, size_}; }

  bool operator==(const char *s) const noexcept {
    if (size_ > 0 && data_[size_ - 1] != 0) {
      return std::string(data_, size_) == std::string(s);
    } else {
      return std::string(data_) == std::string(s);
    }
  }

 private:
  const char *data_;
  size_t size_;
};

string_ref string_ptr::operator*() const noexcept { return {data_, size_}; }

TEST(string_ref, compare) {
  const char *s = "alex\0davidjohn\0";
  string_ptr ptr(s, 5);
  EXPECT_EQ(*ptr, "alex");
  EXPECT_TRUE(*ptr == "alex");
  ++ptr;
  EXPECT_EQ(*ptr, "david");
  EXPECT_TRUE(*ptr == "david");
  ++ptr;
  EXPECT_EQ(*ptr, "john");
}