libcruft-util/tap.hpp

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/*
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* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
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*
* Copyright 2015-2017 Danny Robson <danny@nerdcruft.net>
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*/
#ifndef CRUFT_UTIL_TAP_HPP
#define CRUFT_UTIL_TAP_HPP
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#include "format.hpp"
#include "maths.hpp"
#include <cmath>
#include <ostream>
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#include <functional>
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namespace util::TAP {
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/// A simple TAP (Test Anything Protocol) test case output
class logger {
public:
enum {
PASS,
FAIL,
SKIP,
TODO
};
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//---------------------------------------------------------------------
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logger ();
logger (std::ostream&);
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~logger ();
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//---------------------------------------------------------------------
template <typename ...Args, size_t N>
void
expect (const bool test, const char (&fmt)[N], Args&&... args)
{
m_output << (test ? "ok " : "not ok ") << ++m_size
<< " - "
<< format::printf (fmt) (std::forward<Args> (args)...) << '\n';
if (!test)
m_status = EXIT_FAILURE;
}
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//---------------------------------------------------------------------
template <typename ...Args, size_t N>
void
expect (const std::function<bool(Args...)> &test, Args&&...args, const char (&fmt)[N])
{
try {
expect (test (std::forward<Args> (args)...), fmt);
} catch (...) {
expect (false, fmt);
}
}
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///////////////////////////////////////////////////////////////////////
template <typename ValueA, typename ValueB, std::size_t N, typename ...Args>
void
expect_mod (ValueA &&a, ValueB &&b, const char (&fmt)[N], Args &&...args)
{
return expect (a % b == 0, fmt, std::forward<Args> (args)...);
}
///////////////////////////////////////////////////////////////////////
template <typename T, typename U, typename ...Args, size_t N>
void
expect_eq (const T &a, const U &b, const char (&fmt)[N], Args&&...args)
{
expect (almost_equal (a, b), fmt, std::forward<Args> (args)...);
}
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//---------------------------------------------------------------------
template <typename T, typename U, typename ...Args, size_t N>
void
expect_neq (const T &a, const U &b, const char (&fmt)[N], Args&&...args)
{
expect (!almost_equal (a, b), fmt, std::forward<Args> (args)...);
}
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///////////////////////////////////////////////////////////////////////
template <typename ValueA, typename ValueB, typename ...Args, size_t N>
void
expect_gt (const ValueA &a, const ValueB &b, const char (&fmt)[N], Args&&...args)
{
expect (a > b, fmt, std::forward<Args> (args)...);
}
//---------------------------------------------------------------------
template <typename T, typename U, typename ...Args, size_t N>
void
expect_ge (const T &a, const U &b, const char (&fmt)[N], Args&&...args)
{
expect (a >= b, fmt, std::forward<Args> (args)...);
}
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//---------------------------------------------------------------------
template <typename T, typename U, typename ...Args, size_t N>
void
expect_lt (const T &a, const U &b, const char (&fmt)[N], Args&&...args)
{
expect (a < b, fmt, std::forward<Args> (args)...);
}
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//---------------------------------------------------------------------
template <typename T, typename U, typename ...Args, size_t N>
void
expect_le (const T &a, const U &b, const char (&fmt)[N], Args&&...args)
{
expect (a <= b, fmt, std::forward<Args> (args)...);
}
///////////////////////////////////////////////////////////////////////
template <typename T, typename ...Args, size_t N>
void
expect_nan (const T &t, const char (&fmt)[N], Args&&...args)
{
expect (std::isnan (t), fmt, std::forward<Args> (args)...);
}
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///////////////////////////////////////////////////////////////////////
template <typename T, typename ...Args, size_t N>
void
expect_nothrow (T &&t, const char (&fmt)[N], Args&&...args)
{
bool success = true;
try {
t ();
} catch (...) {
success = false;
}
expect (success, fmt, std::forward<Args> (args)...);
}
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//---------------------------------------------------------------------
template <typename E, typename T, typename ...Args, size_t N>
void
expect_throw (T &&t, const char (&fmt)[N], Args&&...args)
{
bool success = false;
try {
t ();
} catch (const E&) {
success = true;
} catch (...) {
success = false;
}
expect (success, fmt, std::forward<Args> (args)...);
}
///////////////////////////////////////////////////////////////////////
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template <size_t N, typename ...Args>
void fail (const char (&fmt)[N], Args &&...args)
{
expect (false, fmt, std::forward<Args> (args)...);
}
//---------------------------------------------------------------------
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void skip (const std::string &msg);
void todo (const std::string &msg);
void noop (void);
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///////////////////////////////////////////////////////////////////////
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int status (void) const;
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private:
std::ostream &m_output;
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int m_status;
size_t m_size;
};
}
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#endif