259 lines
13 KiB
C++
259 lines
13 KiB
C++
#include "dbc_parser.h"
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#include "dbc_statement_handler.h"
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#include <chrono>
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#include <filesystem>
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#include <fstream>
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#include <iostream>
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#include <stdexcept>
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struct Fixture {
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std::filesystem::path path = std::filesystem::temp_directory_path() /
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("dbc_parser_test_" + std::to_string(std::chrono::steady_clock::now().time_since_epoch().count()) + ".dbc");
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~Fixture() {
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std::error_code error;
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std::filesystem::remove(path, error);
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}
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void Write(const std::string &text) const {
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std::ofstream output(path);
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output << text;
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if (!output)
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throw std::runtime_error("Cannot write test fixture.");
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}
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};
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class CountingHandler : public DbcStatementHandler {
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public:
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inline static int instances = 0;
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inline static int calls = 0;
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CountingHandler() { ++instances; }
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void Handle(const std::string &, DbcParseContext &context) const override {
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++calls;
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context.database.frames.emplace_back();
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}
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};
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std::string SignalLine(const std::string &start, const std::string &length,
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const std::string &order, const std::string &factor,
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const std::string &offset, const std::string &minimum,
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const std::string &maximum) {
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return "SG_ Value : " + start + "|" + length + "@" + order +
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" (" + factor + "," + offset + ") [" + minimum + "|" + maximum + "] \"\" ECU";
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}
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struct TestContext {
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int failures = 0;
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std::size_t count = 0U;
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void Check(bool passed, const std::string &name) {
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++count;
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if (!passed) {
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++failures;
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std::cerr << "FAIL: " << name << '\n';
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}
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}
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void RejectSignal(const Fixture &fixture, const std::string &line, unsigned payload = 8U) {
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fixture.Write("BO_ 1 Frame: " + std::to_string(payload) + " ECU\n\n" + line + "\n");
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try {
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DbcParser().ParseFile(fixture.path.string());
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Check(false, "Reject " + line);
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} catch (const std::runtime_error &error) {
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const std::string prefix = fixture.path.string() + ":3: ";
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Check(std::string(error.what()).find(prefix) == 0U &&
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std::string(error.what()).size() > prefix.size(),
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"Reject " + line);
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}
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}
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};
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int main() {
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Fixture fixture;
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TestContext tests;
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struct ValidCase {
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const char *line;
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std::uint32_t id;
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bool extended;
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unsigned length;
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};
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const ValidCase valid[] = {
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{"BO_ 0 Frame: 0 ECU", 0U, false, 0U},
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{"BO_ 2047 Frame: 8 ECU", 2047U, false, 8U},
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{"BO_ 2048 Frame: 64 ECU", 2048U, true, 64U},
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{"BO_ 536870911 Frame: 255 ECU", 0x1FFFFFFFU, true, 255U},
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{"BO_ 2147483649 Frame: 8 ECU", 1U, true, 8U},
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{"BO_ 2684354559 Frame: 8 ECU", 0x1FFFFFFFU, true, 8U},
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{" BO_\t256\tFrame :\t8\tECU \r", 256U, false, 8U}};
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for (const auto &test: valid) {
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fixture.Write(std::string(test.line) + '\n');
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try {
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const auto database = DbcParser().ParseFile(fixture.path.string());
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tests.Check(database.frames.size() == 1U && database.frames[0].name == "Frame" &&
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database.frames[0].canId == test.id &&
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database.frames[0].isExtended == test.extended &&
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database.frames[0].dlc == test.length &&
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database.frames[0].transmitter == "ECU",
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test.line);
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} catch (const std::exception &error) { tests.Check(false, error.what()); }
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}
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const char *invalid[] = {
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"BO_ invalid", "BO_", "BO_ 1", "BO_ 1 : 8 ECU", "BO_ 1 Frame 8 ECU",
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"BO_ 1 Frame:", "BO_ 1 Frame: 8", "BO_ 1 Frame: 8 ECU extra",
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"BO_ 1 Two Names: 8 ECU", "BO_ -1 Frame: 8 ECU", "BO_ +1 Frame: 8 ECU",
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"BO_ 1x Frame: 8 ECU", "BO_ 0x123 Frame: 8 ECU", "BO_ 1.5 Frame: 8 ECU",
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"BO_ 4294967296 Frame: 8 ECU", "BO_ 999999999999999999999 Frame: 8 ECU",
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"BO_ 536870912 Frame: 8 ECU", "BO_ 1073741824 Frame: 8 ECU",
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"BO_ 2684354560 Frame: 8 ECU", "BO_ 4294967295 Frame: 8 ECU",
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"BO_ 1 Frame: -1 ECU", "BO_ 1 Frame: +8 ECU", "BO_ 1 Frame: 8x ECU",
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"BO_ 1 Frame: 8.5 ECU", "BO_ 1 Frame: 256 ECU",
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"BO_ 1 Frame: 4294967296 ECU", "BO_\tinvalid"};
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for (const auto *line: invalid) {
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fixture.Write(std::string("VERSION \"test\"\n\n") + line + '\n');
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try {
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DbcParser().ParseFile(fixture.path.string());
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tests.Check(false, line);
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} catch (const std::runtime_error &error) {
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const std::string prefix = fixture.path.string() + ":3: ";
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tests.Check(std::string(error.what()).find(prefix) == 0U &&
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std::string(error.what()).size() > prefix.size(),
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line);
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}
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}
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fixture.Write(
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"BO_TX_BU_ 256 : ECU;\nBO_ 256 Frame: 8 ECU\n"
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" SG_ Speed : 0|16@1+ (0.5,1) [0|100] \"rpm\" ECU\n"
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"CM_ BO_ 256 \"Frame comment\";\nCM_ SG_ 256 Speed \"Signal comment\";\n"
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"BO_ 257 Second: 8 ECU\n");
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const auto database = DbcParser().ParseFile(fixture.path.string());
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tests.Check(database.frames.size() == 2U && database.frames[0].signals.size() == 1U &&
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database.frames[0].comment == "Frame comment" &&
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database.frames[0].signals[0].comment == "Signal comment",
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"Integration");
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fixture.Write("\nSG_ Speed : invalid\n");
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try {
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DbcParser().ParseFile(fixture.path.string());
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tests.Check(false, "Signal error location");
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} catch (const std::runtime_error &error) {
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tests.Check(std::string(error.what()).find(fixture.path.string() + ":2: ") == 0U,
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"Signal error location");
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}
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const DbcParser signalParser;
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const std::string ordinary = SignalLine("0", "8", "1+", "1", "0", "0", "255");
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for (const std::string value: {"-1", "+1", "0junk", "0x10", "1.5",
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"4294967296", "999999999999999999999"}) {
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tests.RejectSignal(fixture, SignalLine(value, "8", "1+", "1", "0", "0", "255"));
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tests.RejectSignal(fixture, SignalLine("0", value, "1+", "1", "0", "0", "255"));
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}
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for (const std::string length: {"0", "65"})
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tests.RejectSignal(fixture, SignalLine("0", length, "1+", "1", "0", "0", "255"));
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for (const std::string order: {"2+", "9-", "1", "1x", "1++", "01+"})
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tests.RejectSignal(fixture, SignalLine("0", "8", order, "1", "0", "0", "255"));
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for (const std::string value: {"1junk", "nan", "NaN", "inf", "-inf", "1e999", "1e-999", "0x1p2", "", "1e", "1.2.3"}) {
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tests.RejectSignal(fixture, SignalLine("0", "8", "1+", value, "0", "0", "255"));
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tests.RejectSignal(fixture, SignalLine("0", "8", "1+", "1", value, "0", "255"));
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tests.RejectSignal(fixture, SignalLine("0", "8", "1+", "1", "0", value, "255"));
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tests.RejectSignal(fixture, SignalLine("0", "8", "1+", "1", "0", "0", value));
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}
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tests.RejectSignal(fixture, SignalLine("0", "8", "1+", "1", "0", "2", "1"));
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for (const std::string name: {"", "Two Names", "Value M", "Value m1", "Value m1M"}) {
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std::string line = ordinary;
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line.replace(4U, 5U, name);
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tests.RejectSignal(fixture, line);
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}
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for (const std::string broken: {
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"SG_", "SG_ Value", "SG_ Value : 0|8@1+ (1,0) [0|255] ECU",
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"SG_ Value : 0|8@1+ (1,0) [0|255] \"\"",
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"SG_ Value : 0|8@1+ (1,0) [0|255] \"\" ECU,",
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"SG_ Value : 0|8@1+ (1,0) [0|255] \"\" ECU extra"})
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tests.RejectSignal(fixture, broken);
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tests.RejectSignal(fixture, SignalLine("64", "1", "1+", "1", "0", "0", "1"));
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tests.RejectSignal(fixture, SignalLine("63", "2", "1+", "1", "0", "0", "3"));
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tests.RejectSignal(fixture, SignalLine("56", "2", "0+", "1", "0", "0", "3"));
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tests.RejectSignal(fixture, SignalLine("4294967295", "64", "1+", "1", "0", "0", "1"));
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tests.RejectSignal(fixture, ordinary, 0U);
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for (const char delimiter: {'|', '@', '(', ')', '[', ']', '"'}) {
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std::string line = ordinary;
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line.erase(line.find(delimiter), 1U);
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tests.RejectSignal(fixture, line);
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}
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fixture.Write("BO_ 1 Frame: 8 ECU\n" +
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SignalLine("0", "8", "1+", "0", "0", "0", "0") + "\n" +
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SignalLine("8", "8", "1-", "-1", "0", "-255", "0") + "\n");
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const auto factors = signalParser.ParseFile(fixture.path.string());
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tests.Check(factors.frames[0].signals.size() == 2U &&
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factors.frames[0].signals[0].factor == 0.0 &&
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factors.frames[0].signals[1].factor == -1.0,
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"Zero and negative factors and equal range boundaries");
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struct SignalCase {
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const char *start;
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const char *length;
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const char *order;
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unsigned payload;
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};
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const SignalCase validSignals[] = {
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{"0", "1", "1+", 1U},
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{"7", "1", "0-", 1U},
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{"0", "64", "1+", 8U},
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{"7", "64", "0-", 8U},
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{"63", "1", "1+", 8U},
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{"56", "1", "0+", 8U},
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{"3", "12", "0+", 2U},
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{"2039", "1", "1+", 255U}};
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for (const auto &test: validSignals) {
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fixture.Write("BO_ 1 Frame: " + std::to_string(test.payload) + " ECU\n" +
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SignalLine(test.start, test.length, test.order, ".5e+1", "-2.5E-1", "-1.", "+2e2") + "\n");
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try {
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const auto parsed = signalParser.ParseFile(fixture.path.string());
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const auto &signal = parsed.frames.at(0).signals.at(0);
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tests.Check(signal.startBit == std::stoul(test.start) &&
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signal.length == std::stoul(test.length) &&
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signal.isLittleEndian == (test.order[0] == '1') &&
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signal.isSigned == (test.order[1] == '-') &&
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signal.factor == 5.0 && signal.offset == -0.25 &&
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signal.minimum == -1.0 && signal.maximum == 200.0,
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"Valid signal boundary and numeric metadata");
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} catch (const std::exception &error) { tests.Check(false, error.what()); }
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}
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fixture.Write("BO_ 1 Frame: 8 ECU\n"
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"SG_\tValue\t:\t0 | 8 @1+ ( 1 , 0 ) [ 0 | 255 ] \"rpm\" ECU1,\tECU2\n");
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try {
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const auto parsed = signalParser.ParseFile(fixture.path.string());
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const auto &signal = parsed.frames.at(0).signals.at(0);
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tests.Check(signal.name == "Value" && signal.unit == "rpm" &&
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signal.receivers == std::vector<std::string>({"ECU1", "ECU2"}),
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"Signal tabs, spaces, and receiver list");
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} catch (const std::exception &error) { tests.Check(false, error.what()); }
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DbcDatabase dispatchDatabase;
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DbcParseContext context{dispatchDatabase, nullptr};
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DbcStatementDispatcher dispatcher;
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dispatcher.RegisterType<CountingHandler>("TEST_");
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tests.Check(dispatcher.Dispatch("TEST_ first", context) &&
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dispatcher.Dispatch("TEST_ second", context) &&
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CountingHandler::instances == 1 && CountingHandler::calls == 2 &&
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dispatchDatabase.frames.size() == 2U,
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"Factory dispatch and handler reuse");
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tests.Check(!dispatcher.Dispatch("TEST_OTHER data", context) &&
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!dispatcher.Dispatch("BO_TX_BU_ 1 : ECU;", context) &&
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!dispatcher.Dispatch("VAL_ 1 Speed 0 \"Stopped\";", context) &&
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CountingHandler::calls == 2,
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"Exact and unknown keyword dispatch");
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const DbcParser parser;
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fixture.Write("BO_ 1 First: 8 ECU\n");
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tests.Check(parser.ParseFile(fixture.path.string()).frames.size() == 1U, "First parse");
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fixture.Write("SG_ Speed : invalid\n");
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try {
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parser.ParseFile(fixture.path.string());
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tests.Check(false, "Independent parse context");
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} catch (const std::runtime_error &error) {
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tests.Check(std::string(error.what()).find("Signal found before any frame") !=
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std::string::npos,
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"Independent parse context");
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}
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fixture.Write("BO_ 2 Second: 8 ECU\n");
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const auto recovered = parser.ParseFile(fixture.path.string());
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tests.Check(recovered.frames.size() == 1U && recovered.frames[0].canId == 2U,
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"Fresh parse after error");
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if (tests.failures != 0) return 1;
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std::cout << "All " << tests.count << " parser cases passed.\n";
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return 0;
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}
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