// main driver sample to test substring functionality.

#include <cassert>
#include <iostream>
#include "substring.h"

int main()
{
    //\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//
    // Test basic substring functionality
    //\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//
    std::string str( "abc" );
    substring sub( str );

    assert( sub.str() == "abc" );
    assert( sub.begin() == 0 );
    assert( sub.end() == 3 );
    assert( sub.end() == sub.size() );

    sub.begin( 1 ); // reposition absolute offsets
    sub.end( 2 );
    assert( sub.str() == "b" );

    sub.replace( "HELLO" );
    assert( sub.str() == "HELLO" );
    assert( str == "aHELLOc" );
    assert( sub.begin() == 1 );
    assert( sub.end() == 6 );
    assert( sub.size() == 5 );

    sub.clear();
    assert( sub.str() == "" );
    assert( str == "ac" );
    assert( sub.begin() == 1 );
    assert( sub.end() == 1 );
    assert( sub.size() == 0 );

    sub.insert( "XYZ", sub.begin() );
    assert( str == "aXYZc" );

    sub.expand();
    assert( str == "aXYZc" );
    assert( sub.begin() == 0 );
    assert( sub.end() == str.size() );

    size_t result = sub.search( "YZc", sub.end() );
    assert( result == std::string::npos );

    result = sub.search( "YZc", sub.begin() );
    assert( result == 2 );
    assert( sub.begin() == 2 );
    assert( sub.end() == str.size() );
    assert( sub.size() == 3 );

    sub.fill( '?' );
    assert( sub.begin() == 2 );
    assert( sub.end() == str.size() );
    assert( sub.equals_to( "???" ) );
    assert( str == "aX???" );

    sub.expand();
    sub.toupper();
    assert( sub.equals_to( "AX???" ) );
    assert( str == "AX???" );

    sub.tolower();
    assert( sub.equals_to( "ax???" ) );
    assert( str == "ax???" );

    substring sub2 = sub; // invokes copy constructor
    result = sub2.search( "x?", sub.begin() );
    assert( sub2.equals_to( "x?" ) );
    assert( sub.equals_to( "ax???" ) );

    sub2.merge( sub );
    assert( sub2.equals_to( "ax???" ) );
    assert( sub.equals_to( sub2 ) );

    //\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//
    // Parsing tests
    //\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//
    str = "ABC123abc ";
    sub.expand();
    if ( sub.parse().isalpha().isdigit().isalnum().isspace().isempty().succeeded() ) {
        sub.match().replace( "xyz" );
        assert( str == "xyz" );
    } else {
        sub.unparse(); // restore the original substring
    }

    return 0;
}