//          Copyright Ferdinand Majerech 2011.
// Distributed under the Boost Software License, Version 1.0.
//    (See accompanying file LICENSE_1_0.txt or copy at
//          http://www.boost.org/LICENSE_1_0.txt)

module dyaml.testerrors;


import dyaml.testcommon;


/**
 * Loader error unittest from file stream.
 *
 * Params:  verbose       = Print verbose output?
 *          errorFilename = File name to read from.
 */
void testLoaderError(bool verbose, string errorFilename)
{
    auto file = new File(errorFilename);
    scope(exit){file.close();}

    Node[] nodes;
    try{nodes = Loader(file).loadAll();}
    catch(YAMLException e)
    {
        if(verbose){writeln(typeid(e).toString(), "\n", e);}
        return;
    }
    assert(false, "Expected an exception");
}

/**
 * Loader error unittest from string.
 *
 * Params:  verbose       = Print verbose output?
 *          errorFilename = File name to read from.
 */
void testLoaderErrorString(bool verbose, string errorFilename)
{
    //Load file to a buffer, then pass that to the YAML loader.
    auto file = new File(errorFilename);
    scope(exit){file.close();}
    ubyte[] buffer;
    buffer.length = file.available;
    file.read(buffer);

    try
    {
        auto nodes = Loader(new MemoryStream(buffer)).loadAll();
    }
    catch(YAMLException e)
    {
        if(verbose){writeln(typeid(e).toString(), "\n", e);}
        return;
    }
    assert(false, "Expected an exception");
}

/**
 * Loader error unittest from filename.
 *
 * Params:  verbose       = Print verbose output?
 *          errorFilename = File name to read from.
 */
void testLoaderErrorFilename(bool verbose, string errorFilename)
{
    try{auto nodes = Loader(errorFilename).loadAll();}
    catch(YAMLException e)
    {
        if(verbose){writeln(typeid(e).toString(), "\n", e);}
        return;
    }
    assert(false, "Expected an exception");
}

/**
 * Loader error unittest loading a single document from a file.
 *
 * Params:  verbose       = Print verbose output?
 *          errorFilename = File name to read from.
 */
void testLoaderErrorSingle(bool verbose, string errorFilename)
{
    try{auto nodes = Loader(errorFilename).load();}
    catch(YAMLException e)
    {
        if(verbose){writeln(typeid(e).toString(), "\n", e);}
        return;
    }
    assert(false, "Expected an exception");
}


unittest
{
    writeln("D:YAML Errors unittest");
    run("testLoaderError",         &testLoaderError,         ["loader-error"]);
    run("testLoaderErrorString",   &testLoaderErrorString,   ["loader-error"]);
    run("testLoaderErrorFilename", &testLoaderErrorFilename, ["loader-error"]);
    run("testLoaderErrorSingle",   &testLoaderErrorSingle,   ["single-loader-error"]);
}