// Copyright 2022 Google LLC. All Rights Reserved. This file and proprietary
// source code may only be used and distributed under the Widevine License
// Agreement.

#include "string_format.h"

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

#include <string>

namespace wvutil {

TEST(StringFormatTest, SignedInteger) {
  constexpr char kFormat[] = "Version %d";
  constexpr char kResult[] = "Version -123";
  std::string result;
  EXPECT_TRUE(FormatString(&result, kFormat, -123));
  EXPECT_EQ(result, kResult);
}

TEST(StringFormatTest, UnsignedInteger) {
  constexpr char kFormat[] = "Version %u";
  constexpr char kResult[] = "Version 27";
  std::string result;
  EXPECT_TRUE(FormatString(&result, kFormat, 27));
  EXPECT_EQ(result, kResult);
}

TEST(StringFormatTest, HexInteger) {
  constexpr char kFormat[] = "Version %X";
  constexpr char kResult[] = "Version FF";
  std::string result;
  EXPECT_TRUE(FormatString(&result, kFormat, 0xFF));
  EXPECT_EQ(result, kResult);
}

TEST(StringFormatTest, Strings) {
  constexpr char kFormat[] = "Hello, %s.";
  constexpr char kResult[] = "Hello, DRM.";
  std::string result;
  EXPECT_TRUE(FormatString(&result, kFormat, "DRM"));
  EXPECT_EQ(result, kResult);
}

TEST(StringFormatTest, Nothing) {
  constexpr char kString[] = "No format fields.";
  std::string result;
  EXPECT_TRUE(FormatString(&result, kString));
  EXPECT_EQ(result, kString);
}

TEST(StringFormatTest, NullOutput) {
  constexpr char kString[] = "This will never be referenced.";
  EXPECT_FALSE(FormatString(nullptr, kString));
}

TEST(StringFormatTest, NullFormat) {
  std::string result;
  EXPECT_FALSE(FormatString(&result, nullptr));
  EXPECT_TRUE(result.empty());
}

}  // namespace wvutil