cpp-dice-roller/test/io_test.cxx

//
//  io_test.cxx
//  dice-td
//
//  Created by Sam Jaffe on 1/16/21.
//  Copyright © 2021 Sam Jaffe. All rights reserved.
//

#include <sstream>

#include "xcode_gtest_helper.h"

#include "dice-roll/die.h"
#include "dice-roll/roll.h"

using testing::Eq;

TEST(DiceIOTest, StringFormIsExplicit) {
  std::stringstream ss;
  ss << dice::from_string("2{2d6-d4+5}");
  EXPECT_THAT(ss.str(), Eq("2{2d6-1d4+5}"));
}

TEST(DiceIOTest, AllModifiersComeAtTheEnd) {
  std::stringstream ss;
  ss << dice::from_string("2d6-4-1d6+5");
  EXPECT_THAT(ss.str(), Eq("2d6-1d6-4+5"));
}

TEST(DiceIOTest, StringFormDoesNotPreserveWhitespace) {
  std::stringstream ss;
  ss << dice::from_string("2 { d 4 + 5 }");
  EXPECT_THAT(ss.str(), Eq("2{1d4+5}"));
}

TEST(DiceIOTest, CanReadDirectlyFromStream) {
  std::stringstream in("2d6-4-1d6+5"), out;
  dice::dice d;
  in >> d;
  out << d;
  EXPECT_THAT(out.str(), Eq("2d6-1d6-4+5"));
}

TEST(DiceIOTest, PrintsOutDCMarker) {
  std::string const tokens[] = {"<", "<=", ">", ">="};
  for (auto & tok : tokens) {
    std::stringstream ss;
    ss << dice::from_string("1d20" + tok + "10");
    EXPECT_THAT(ss.str(), "1d20" + tok + "10");
  }
}

TEST(RollIOTest, CanPrint0dN) {
  dice::dice_roll roll{{{}}};
  std::stringstream ss;
  ss << roll;
  EXPECT_THAT(ss.str(), Eq("0"));
}

TEST(RollIOTest, Prints1dNAsRollNumber) {
  dice::dice_roll roll{{{dice::sign::ZERO, {3}}}};
  std::stringstream ss;
  ss << roll;
  EXPECT_THAT(ss.str(), Eq("3"));
}

TEST(RollIOTest, PrintsNdMAsList) {
  dice::dice_roll roll{{{dice::sign::ZERO, {3, 2, 4}}}};
  std::stringstream ss;
  ss << roll;
  EXPECT_THAT(ss.str(), Eq("[ 3, 2, 4 ]"));
}

TEST(RollIOTest, PrintsModifiersAfterList) {
  dice::dice_roll roll{{{dice::sign::ZERO, {3, 2, 4}}},
                       {{dice::sign::PLUS, 2}}};
  std::stringstream ss;
  ss << roll;
  EXPECT_THAT(ss.str(), Eq("[ 3, 2, 4 ]+2"));
}