ah_msg_test.cc

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/*
                          Aleph_w
 
  Data structures & Algorithms
  version 2.0.0b
  https://github.com/lrleon/Aleph-w
 
  This file is part of Aleph-w library
 
  Copyright (c) 2002-2026 Leandro Rabindranath Leon
 
  Permission is hereby granted, free of charge, to any person obtaining a copy
  of this software and associated documentation files (the "Software"), to deal
  in the Software without restriction, including without limitation the rights
  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  copies of the Software, and to permit persons to whom the Software is
  furnished to do so, subject to the following conditions:
 
  The above copyright notice and this permission notice shall be included in all
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  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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*/
 
 
#include <gtest/gtest.h>
 
#include <ah-msg.H>
 
#include <string>
 
namespace
{
 
struct NonStreamable
{
  int value;
};
 
} // namespace
 
TEST(AhMsgTest, BuildStringConcatenatesArguments)
{
  const std::string msg = Aleph::build_string("Value=", 42, ", flag=", true);
  EXPECT_EQ(msg, "Value=42, flag=1");
 
  const std::string alias = Aleph::build_error_msg("[", msg, "]");
  EXPECT_EQ(alias, "[Value=42, flag=1]");
}
 
TEST(AhMsgTest, BuildStringSupportsMovableTypes)
{
  std::string dynamic = "dynamic";
  const std::string msg = Aleph::build_string("copy-", dynamic, "-move-", std::string("temp"));
 
  EXPECT_EQ(msg, "copy-dynamic-move-temp");
  EXPECT_EQ(dynamic, "dynamic"); // ensure lvalue untouched
}
 
TEST(AhMsgTest, BuildStringRejectsNonStreamableAtCompileTime)
{
  static_assert(!Aleph::detail::is_stream_insertable<NonStreamable>::value,
                "NonStreamable should not be considered stream insertable");
  static_assert(!Aleph::detail::are_stream_insertable_v<NonStreamable>,
                "Variadic helper must reject NonStreamable");
}