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#include "logging.hh"
#include "nixexpr.hh"
#include "util.hh"

#include <gtest/gtest.h>

namespace nix {

    /* ----------------------------------------------------------------------------
     * logEI
     * --------------------------------------------------------------------------*/

    TEST(logEI, catpuresBasicProperties) {

        MakeError(TestError, Error);
        ErrorInfo::programName = std::optional("error-unit-test");

        try {
            throw TestError("an error for testing purposes");
        } catch (Error &e) {
            testing::internal::CaptureStderr();
            logger->logEI(e.info());
            auto str = testing::internal::GetCapturedStderr();

            ASSERT_STREQ(str.c_str(),"\x1B[31;1merror:\x1B[0m\x1B[34;1m --- TestError --- error-unit-test\x1B[0m\nan error for testing purposes\n");
        }
    }

    TEST(logEI, appendingHintsToPreviousError) {

        MakeError(TestError, Error);
        ErrorInfo::programName = std::optional("error-unit-test");

        try {
            auto e = Error("initial error");
            throw TestError(e.info());
        } catch (Error &e) {
            ErrorInfo ei = e.info();
            ei.hint = hintfmt("%s; subsequent error message.", normaltxt(e.info().hint ? e.info().hint->str() : ""));

            testing::internal::CaptureStderr();
            logger->logEI(ei);
            auto str = testing::internal::GetCapturedStderr();

            ASSERT_STREQ(str.c_str(), "\x1B[31;1merror:\x1B[0m\x1B[34;1m --- TestError --- error-unit-test\x1B[0m\n\x1B[33;1m\x1B[0minitial error\x1B[0m; subsequent error message.\n");
        }

    }

    TEST(logEI, picksUpSysErrorExitCode) {

        MakeError(TestError, Error);
        ErrorInfo::programName = std::optional("error-unit-test");

        try {
            auto x = readFile(-1);
        }
        catch (SysError &e) {
            testing::internal::CaptureStderr();
            logError(e.info());
            auto str = testing::internal::GetCapturedStderr();

            ASSERT_STREQ(str.c_str(), "\x1B[31;1merror:\x1B[0m\x1B[34;1m --- SysError --- error-unit-test\x1B[0m\n\x1B[33;1m\x1B[0mstatting file\x1B[0m: \x1B[33;1mBad file descriptor\x1B[0m\n");

        }
    }

    TEST(logEI, loggingErrorOnInfoLevel) {
        testing::internal::CaptureStderr();

        logger->logEI({ .level = lvlInfo,
                .name = "Info name",
                .description = "Info description",
                });

        auto str = testing::internal::GetCapturedStderr();
        ASSERT_STREQ(str.c_str(), "\x1B[32;1minfo:\x1B[0m\x1B[34;1m --- Info name --- error-unit-test\x1B[0m\nInfo description\n");
    }

    TEST(logEI, loggingErrorOnTalkativeLevel) {
        verbosity = lvlTalkative;

        testing::internal::CaptureStderr();

        logger->logEI({ .level = lvlTalkative,
                        .name = "Talkative name",
                        .description = "Talkative description",
                        });

        auto str = testing::internal::GetCapturedStderr();
        ASSERT_STREQ(str.c_str(), "\x1B[32;1mtalk:\x1B[0m\x1B[34;1m --- Talkative name --- error-unit-test\x1B[0m\nTalkative description\n");
    }

    TEST(logEI, loggingErrorOnChattyLevel) {
        verbosity = lvlChatty;

        testing::internal::CaptureStderr();

        logger->logEI({ .level = lvlChatty,
                        .name = "Chatty name",
                        .description = "Talkative description",
                        });

        auto str = testing::internal::GetCapturedStderr();
        ASSERT_STREQ(str.c_str(), "\x1B[32;1mchat:\x1B[0m\x1B[34;1m --- Chatty name --- error-unit-test\x1B[0m\nTalkative description\n");
    }

    TEST(logEI, loggingErrorOnDebugLevel) {
        verbosity = lvlDebug;

        testing::internal::CaptureStderr();

        logger->logEI({ .level = lvlDebug,
                        .name = "Debug name",
                        .description = "Debug description",
                        });

        auto str = testing::internal::GetCapturedStderr();
        ASSERT_STREQ(str.c_str(), "\x1B[33;1mdebug:\x1B[0m\x1B[34;1m --- Debug name --- error-unit-test\x1B[0m\nDebug description\n");
    }

    TEST(logEI, loggingErrorOnVomitLevel) {
        verbosity = lvlVomit;

        testing::internal::CaptureStderr();

        logger->logEI({ .level = lvlVomit,
                        .name = "Vomit name",
                        .description = "Vomit description",
                        });

        auto str = testing::internal::GetCapturedStderr();
        ASSERT_STREQ(str.c_str(), "\x1B[32;1mvomit:\x1B[0m\x1B[34;1m --- Vomit name --- error-unit-test\x1B[0m\nVomit description\n");
    }

    /* ----------------------------------------------------------------------------
     * logError
     * --------------------------------------------------------------------------*/


    TEST(logError, logErrorWithoutHintOrCode) {
        testing::internal::CaptureStderr();

        logError({
                .name = "name",
                .description = "error description",
                });

        auto str = testing::internal::GetCapturedStderr();
        ASSERT_STREQ(str.c_str(), "\x1B[31;1merror:\x1B[0m\x1B[34;1m --- name --- error-unit-test\x1B[0m\nerror description\n");
    }

    TEST(logError, logErrorWithPreviousAndNextLinesOfCode) {
        SymbolTable testTable;
        auto problem_file = testTable.create("myfile.nix");

        testing::internal::CaptureStderr();

        logError({
                .name = "error name",
                .description = "error with code lines",
                .hint = hintfmt("this hint has %1% templated %2%!!",
                        "yellow",
                        "values"),
                .nixCode = NixCode {
                .errPos = Pos(problem_file, 40, 13),
                .prevLineOfCode = "previous line of code",
                .errLineOfCode = "this is the problem line of code",
                .nextLineOfCode = "next line of code",
                }});


        auto str = testing::internal::GetCapturedStderr();
        ASSERT_STREQ(str.c_str(), "\x1B[31;1merror:\x1B[0m\x1B[34;1m --- error name --- error-unit-test\x1B[0m\nin file: \x1B[34;1mmyfile.nix (40:13)\x1B[0m\n\nerror with code lines\n\n    39| previous line of code\n    40| this is the problem line of code\n      |             \x1B[31;1m^\x1B[0m\n    41| next line of code\n\nthis hint has \x1B[33;1myellow\x1B[0m templated \x1B[33;1mvalues\x1B[0m!!\n");
    }

    TEST(logError, logErrorWithoutLinesOfCode) {
        SymbolTable testTable;
        auto problem_file = testTable.create("myfile.nix");
        testing::internal::CaptureStderr();

        logError({
                .name = "error name",
                .description = "error without any code lines.",
                .hint = hintfmt("this hint has %1% templated %2%!!",
                        "yellow",
                        "values"),
                .nixCode = NixCode {
                .errPos = Pos(problem_file, 40, 13)
                }});

        auto str = testing::internal::GetCapturedStderr();
        ASSERT_STREQ(str.c_str(), "\x1B[31;1merror:\x1B[0m\x1B[34;1m --- error name --- error-unit-test\x1B[0m\nin file: \x1B[34;1mmyfile.nix (40:13)\x1B[0m\n\nerror without any code lines.\n\nthis hint has \x1B[33;1myellow\x1B[0m templated \x1B[33;1mvalues\x1B[0m!!\n");
    }

    TEST(logError, logErrorWithOnlyHintAndName) {
        SymbolTable testTable;
        auto problem_file = testTable.create("myfile.nix");
        testing::internal::CaptureStderr();

        logError({
                .name = "error name",
                .hint = hintfmt("hint %1%", "only"),
                .nixCode = NixCode {
                .errPos = Pos(problem_file, 40, 13)
                }});

        auto str = testing::internal::GetCapturedStderr();
        ASSERT_STREQ(str.c_str(), "\x1B[31;1merror:\x1B[0m\x1B[34;1m --- error name --- error-unit-test\x1B[0m\nin file: \x1B[34;1mmyfile.nix (40:13)\x1B[0m\n\nhint \x1B[33;1monly\x1B[0m\n");

    }

    /* ----------------------------------------------------------------------------
     * logWarning
     * --------------------------------------------------------------------------*/

    TEST(logWarning, logWarningWithNameDescriptionAndHint) {
        testing::internal::CaptureStderr();

        logWarning({
            .name = "name",
            .description = "error description",
            .hint = hintfmt("there was a %1%", "warning"),
        });

        auto str = testing::internal::GetCapturedStderr();
        ASSERT_STREQ(str.c_str(), "\x1B[33;1mwarning:\x1B[0m\x1B[34;1m --- name --- error-unit-test\x1B[0m\nerror description\n\nthere was a \x1B[33;1mwarning\x1B[0m\n");
    }

    TEST(logWarning, logWarningWithFileLineNumAndCode) {

        SymbolTable testTable;
        auto problem_file = testTable.create("myfile.nix");

        testing::internal::CaptureStderr();

        logWarning({
                .name = "warning name",
                .description = "warning description",
                .hint = hintfmt("this hint has %1% templated %2%!!",
                        "yellow",
                        "values"),
                .nixCode = NixCode {
                .errPos = Pos(problem_file, 40, 13),
                .prevLineOfCode = std::nullopt,
                .errLineOfCode = "this is the problem line of code",
                .nextLineOfCode = std::nullopt
                }});


        auto str = testing::internal::GetCapturedStderr();
        ASSERT_STREQ(str.c_str(), "\x1B[33;1mwarning:\x1B[0m\x1B[34;1m --- warning name --- error-unit-test\x1B[0m\nin file: \x1B[34;1mmyfile.nix (40:13)\x1B[0m\n\nwarning description\n\n    40| this is the problem line of code\n      |             \x1B[31;1m^\x1B[0m\n\nthis hint has \x1B[33;1myellow\x1B[0m templated \x1B[33;1mvalues\x1B[0m!!\n");
    }

}