439 lines
14 KiB
C++
439 lines
14 KiB
C++
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// Copyright 2015 The Kyua Authors.
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// All rights reserved.
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//
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are
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// met:
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//
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// * Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above copyright
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// notice, this list of conditions and the following disclaimer in the
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// documentation and/or other materials provided with the distribution.
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// * Neither the name of Google Inc. nor the names of its contributors
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// may be used to endorse or promote products derived from this software
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// without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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#include "engine/tap_parser.hpp"
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#include <fstream>
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#include "engine/exceptions.hpp"
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#include "utils/format/macros.hpp"
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#include "utils/noncopyable.hpp"
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#include "utils/optional.ipp"
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#include "utils/sanity.hpp"
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#include "utils/text/exceptions.hpp"
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#include "utils/text/operations.ipp"
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#include "utils/text/regex.hpp"
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namespace fs = utils::fs;
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namespace text = utils::text;
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using utils::optional;
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/// TAP plan representing all tests being skipped.
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const engine::tap_plan engine::all_skipped_plan(1, 0);
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namespace {
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/// Implementation of the TAP parser.
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///
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/// This is a class only to simplify keeping global constant values around (like
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/// prebuilt regular expressions).
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class tap_parser : utils::noncopyable {
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/// Regular expression to match plan lines.
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text::regex _plan_regex;
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/// Regular expression to match a TODO and extract the reason.
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text::regex _todo_regex;
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/// Regular expression to match a SKIP and extract the reason.
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text::regex _skip_regex;
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/// Regular expression to match a single test result.
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text::regex _result_regex;
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/// Checks if a line contains a TAP plan and extracts its data.
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///
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/// \param line The line to try to parse.
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/// \param [in,out] out_plan Used to store the found plan, if any. The same
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/// output variable should be given to all calls to this function so
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/// that duplicate plan entries can be discovered.
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/// \param [out] out_all_skipped_reason Used to store the reason for all
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/// tests being skipped, if any. If this is set to a non-empty value,
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/// then the out_plan is set to 1..0.
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///
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/// \return True if the line matched a plan; false otherwise.
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///
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/// \throw engine::format_error If the input is invalid.
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/// \throw text::error If the input is invalid.
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bool
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try_parse_plan(const std::string& line,
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optional< engine::tap_plan >& out_plan,
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std::string& out_all_skipped_reason)
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{
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const text::regex_matches plan_matches = _plan_regex.match(line);
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if (!plan_matches)
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return false;
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const engine::tap_plan plan(
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text::to_type< std::size_t >(plan_matches.get(1)),
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text::to_type< std::size_t >(plan_matches.get(2)));
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if (out_plan)
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throw engine::format_error(
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F("Found duplicate plan %s..%s (saw %s..%s earlier)") %
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plan.first % plan.second %
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out_plan.get().first % out_plan.get().second);
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std::string all_skipped_reason;
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const text::regex_matches skip_matches = _skip_regex.match(line);
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if (skip_matches) {
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if (plan != engine::all_skipped_plan) {
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throw engine::format_error(F("Skipped plan must be %s..%s") %
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engine::all_skipped_plan.first %
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engine::all_skipped_plan.second);
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}
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all_skipped_reason = skip_matches.get(2);
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if (all_skipped_reason.empty())
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all_skipped_reason = "No reason specified";
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} else {
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if (plan.first > plan.second)
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throw engine::format_error(F("Found reversed plan %s..%s") %
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plan.first % plan.second);
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}
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INV(!out_plan);
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out_plan = plan;
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out_all_skipped_reason = all_skipped_reason;
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POST(out_plan);
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POST(out_all_skipped_reason.empty() ||
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out_plan.get() == engine::all_skipped_plan);
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return true;
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}
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/// Checks if a line contains a TAP test result and extracts its data.
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///
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/// \param line The line to try to parse.
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/// \param [in,out] out_ok_count Accumulator for 'ok' results.
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/// \param [in,out] out_not_ok_count Accumulator for 'not ok' results.
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/// \param [out] out_bailed_out Set to true if the test bailed out.
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///
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/// \return True if the line matched a result; false otherwise.
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///
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/// \throw engine::format_error If the input is invalid.
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/// \throw text::error If the input is invalid.
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bool
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try_parse_result(const std::string& line, std::size_t& out_ok_count,
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std::size_t& out_not_ok_count, bool& out_bailed_out)
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{
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PRE(!out_bailed_out);
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const text::regex_matches result_matches = _result_regex.match(line);
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if (result_matches) {
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if (result_matches.get(1) == "ok") {
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++out_ok_count;
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} else {
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INV(result_matches.get(1) == "not ok");
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if (_todo_regex.match(line) || _skip_regex.match(line)) {
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++out_ok_count;
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} else {
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++out_not_ok_count;
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}
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}
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return true;
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} else {
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if (line.find("Bail out!") == 0) {
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out_bailed_out = true;
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return true;
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} else {
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return false;
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}
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}
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}
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public:
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/// Sets up the TAP parser state.
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tap_parser(void) :
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_plan_regex(text::regex::compile("^([0-9]+)\\.\\.([0-9]+)", 2)),
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_todo_regex(text::regex::compile("TODO[ \t]*(.*)$", 2, true)),
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_skip_regex(text::regex::compile("(SKIP|Skipped:?)[ \t]*(.*)$", 2,
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true)),
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_result_regex(text::regex::compile("^(not ok|ok)[ \t-]+[0-9]*", 1))
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{
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}
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/// Parses an input file containing TAP output.
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///
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/// \param input The stream to read from.
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///
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/// \return The results of the parsing in the form of a tap_summary object.
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///
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/// \throw engine::format_error If there are any syntax errors in the input.
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/// \throw text::error If there are any syntax errors in the input.
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engine::tap_summary
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parse(std::ifstream& input)
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{
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optional< engine::tap_plan > plan;
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std::string all_skipped_reason;
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bool bailed_out = false;
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std::size_t ok_count = 0, not_ok_count = 0;
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std::string line;
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while (!bailed_out && std::getline(input, line)) {
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if (try_parse_result(line, ok_count, not_ok_count, bailed_out))
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continue;
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(void)try_parse_plan(line, plan, all_skipped_reason);
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}
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if (bailed_out) {
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return engine::tap_summary::new_bailed_out();
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} else {
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if (!plan)
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throw engine::format_error(
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"Output did not contain any TAP plan and the program did "
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"not bail out");
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if (plan.get() == engine::all_skipped_plan) {
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return engine::tap_summary::new_all_skipped(all_skipped_reason);
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} else {
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const std::size_t exp_count = plan.get().second -
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plan.get().first + 1;
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const std::size_t actual_count = ok_count + not_ok_count;
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if (exp_count != actual_count) {
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throw engine::format_error(
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"Reported plan differs from actual executed tests");
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}
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return engine::tap_summary::new_results(plan.get(), ok_count,
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not_ok_count);
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}
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}
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}
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};
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} // anonymous namespace
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/// Constructs a TAP summary with the results of parsing a TAP output.
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///
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/// \param bailed_out_ Whether the test program bailed out early or not.
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/// \param plan_ The TAP plan.
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/// \param all_skipped_reason_ The reason for skipping all tests, if any.
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/// \param ok_count_ Number of 'ok' test results.
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/// \param not_ok_count_ Number of 'not ok' test results.
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engine::tap_summary::tap_summary(const bool bailed_out_,
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const tap_plan& plan_,
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const std::string& all_skipped_reason_,
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const std::size_t ok_count_,
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const std::size_t not_ok_count_) :
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_bailed_out(bailed_out_), _plan(plan_),
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_all_skipped_reason(all_skipped_reason_),
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_ok_count(ok_count_), _not_ok_count(not_ok_count_)
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{
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}
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/// Constructs a TAP summary for a bailed out test program.
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///
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/// \return The new tap_summary object.
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engine::tap_summary
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engine::tap_summary::new_bailed_out(void)
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{
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return tap_summary(true, tap_plan(0, 0), "", 0, 0);
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}
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/// Constructs a TAP summary for a test program that skipped all tests.
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///
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/// \param reason Textual reason describing why the tests were skipped.
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///
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/// \return The new tap_summary object.
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engine::tap_summary
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engine::tap_summary::new_all_skipped(const std::string& reason)
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{
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return tap_summary(false, all_skipped_plan, reason, 0, 0);
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}
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/// Constructs a TAP summary for a test program that reported results.
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///
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/// \param plan_ The TAP plan.
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/// \param ok_count_ Total number of 'ok' results.
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/// \param not_ok_count_ Total number of 'not ok' results.
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///
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/// \return The new tap_summary object.
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engine::tap_summary
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engine::tap_summary::new_results(const tap_plan& plan_,
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const std::size_t ok_count_,
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const std::size_t not_ok_count_)
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{
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PRE((plan_.second - plan_.first + 1) == (ok_count_ + not_ok_count_));
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return tap_summary(false, plan_, "", ok_count_, not_ok_count_);
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}
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/// Checks whether the test program bailed out early or not.
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///
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/// \return True if the test program aborted execution before completing.
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bool
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engine::tap_summary::bailed_out(void) const
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{
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return _bailed_out;
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}
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/// Gets the TAP plan of the test program.
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///
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/// \pre bailed_out() must be false.
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///
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/// \return The TAP plan. If 1..0, then all_skipped_reason() will have some
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/// contents.
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const engine::tap_plan&
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engine::tap_summary::plan(void) const
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{
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PRE(!_bailed_out);
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return _plan;
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}
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/// Gets the reason for skipping all the tests, if any.
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///
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/// \pre bailed_out() must be false.
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/// \pre plan() returns 1..0.
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///
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/// \return The reason for skipping all the tests.
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const std::string&
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engine::tap_summary::all_skipped_reason(void) const
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{
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PRE(!_bailed_out);
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PRE(_plan == all_skipped_plan);
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return _all_skipped_reason;
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}
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/// Gets the number of 'ok' test results.
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///
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/// \pre bailed_out() must be false.
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///
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/// \return The number of test results that reported 'ok'.
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std::size_t
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engine::tap_summary::ok_count(void) const
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{
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PRE(!bailed_out());
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PRE(_all_skipped_reason.empty());
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return _ok_count;
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}
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/// Gets the number of 'not ok' test results.
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///
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/// \pre bailed_out() must be false.
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///
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/// \return The number of test results that reported 'not ok'.
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std::size_t
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engine::tap_summary::not_ok_count(void) const
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{
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PRE(!_bailed_out);
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PRE(_all_skipped_reason.empty());
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return _not_ok_count;
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}
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/// Checks two tap_summary objects for equality.
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///
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/// \param other The object to compare this one to.
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///
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/// \return True if the two objects are equal; false otherwise.
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bool
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engine::tap_summary::operator==(const tap_summary& other) const
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{
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return (_bailed_out == other._bailed_out &&
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_plan == other._plan &&
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_all_skipped_reason == other._all_skipped_reason &&
|
||
|
|
_ok_count == other._ok_count &&
|
||
|
|
_not_ok_count == other._not_ok_count);
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
/// Checks two tap_summary objects for inequality.
|
||
|
|
///
|
||
|
|
/// \param other The object to compare this one to.
|
||
|
|
///
|
||
|
|
/// \return True if the two objects are different; false otherwise.
|
||
|
|
bool
|
||
|
|
engine::tap_summary::operator!=(const tap_summary& other) const
|
||
|
|
{
|
||
|
|
return !(*this == other);
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
/// Formats a tap_summary into a stream.
|
||
|
|
///
|
||
|
|
/// \param output The stream into which to inject the object.
|
||
|
|
/// \param summary The summary to format.
|
||
|
|
///
|
||
|
|
/// \return The output stream.
|
||
|
|
std::ostream&
|
||
|
|
engine::operator<<(std::ostream& output, const tap_summary& summary)
|
||
|
|
{
|
||
|
|
output << "tap_summary{";
|
||
|
|
if (summary.bailed_out()) {
|
||
|
|
output << "bailed_out=true";
|
||
|
|
} else {
|
||
|
|
const tap_plan& plan = summary.plan();
|
||
|
|
output << "bailed_out=false"
|
||
|
|
<< ", plan=" << plan.first << ".." << plan.second;
|
||
|
|
if (plan == all_skipped_plan) {
|
||
|
|
output << ", all_skipped_reason=" << summary.all_skipped_reason();
|
||
|
|
} else {
|
||
|
|
output << ", ok_count=" << summary.ok_count()
|
||
|
|
<< ", not_ok_count=" << summary.not_ok_count();
|
||
|
|
}
|
||
|
|
}
|
||
|
|
output << "}";
|
||
|
|
return output;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
/// Parses an input file containing the TAP output of a test program.
|
||
|
|
///
|
||
|
|
/// \param filename Path to the file to parse.
|
||
|
|
///
|
||
|
|
/// \return The parsed data in the form of a tap_summary.
|
||
|
|
///
|
||
|
|
/// \throw load_error If there are any problems parsing the file. Such problems
|
||
|
|
/// should be considered as test program breakage.
|
||
|
|
engine::tap_summary
|
||
|
|
engine::parse_tap_output(const utils::fs::path& filename)
|
||
|
|
{
|
||
|
|
std::ifstream input(filename.str().c_str());
|
||
|
|
if (!input)
|
||
|
|
throw engine::load_error(filename, "Failed to open TAP output file");
|
||
|
|
|
||
|
|
try {
|
||
|
|
return tap_summary(tap_parser().parse(input));
|
||
|
|
} catch (const engine::format_error& e) {
|
||
|
|
throw engine::load_error(filename, e.what());
|
||
|
|
} catch (const text::error& e) {
|
||
|
|
throw engine::load_error(filename, e.what());
|
||
|
|
}
|
||
|
|
}
|