// Copyright 2017-2020 Martin Moene

//

// https://github.com/martinmoene/string-view-lite

//

// Distributed under the Boost Software License, Version 1.0.

// (See accompanying file LICENSE.txt or copy at http://www.boost.org/LICENSE_1_0.txt)

#include "string-view-main.t.hpp"

#include <vector>

#ifndef nssv_CONFIG_CONFIRMS_COMPILATION_ERRORS

# define nssv_CONFIG_CONFIRMS_COMPILATION_ERRORS 0

#endif

namespace {

using namespace nonstd;

template< class T >

T * data( std::vector<T> & v )

{

#if nssv_CPP11_OR_GREATER

return v.data();

#else

return &v[0];

#endif

}

typedef string_view::size_type size_type;

// 24.4.2.1 Construction and assignment:

CASE( "string_view: Allows to default construct an empty string_view" )

{

string_view sv;

// use parenthesis with data() to prevent lest from using sv.data() as C-string:

EXPECT( sv.size() == size_type( 0 ) );

EXPECT( (sv.data() == nssv_nullptr) );

}

CASE( "string_view: Allows to construct from pointer and size" )

{

string_view sv( "hello world", 5 );

EXPECT( sv.size() == size_type( 5 ) );

EXPECT( *(sv.data() + 0) == 'h' );

EXPECT( *(sv.data() + 4) == 'o' );

}

CASE( "string_view: Allows to construct from C-string" )

{

string_view sv( "hello world" );

EXPECT( sv.size() == size_type( 11 ) );

EXPECT( *(sv.data() + 0) == 'h' );

EXPECT( *(sv.data() + 10) == 'd' );

}

CASE( "string_view: Allows to copy-construct from empty string_view" )

{

string_view sv1;

string_view sv2( sv1 );

// use parenthesis with data() to prevent lest from using sv.data() as C-string:

EXPECT( sv2.size() == size_type( 0 ) );

EXPECT( (sv2.data() == nssv_nullptr) );

}

CASE( "string_view: Allows to copy-construct from non-empty string_view" )

{

string_view sv1( "hello world", 5 );

string_view sv2( sv1 );

EXPECT( sv2.size() == sv1.size() );

EXPECT( (sv2.data() == sv1.data()) );

EXPECT( *(sv2.data() + 0) == 'h' );

EXPECT( *(sv2.data() + 4) == 'o' );

}

CASE( "string_view: Disallows to copy-construct from nullptr (C++11)" )

{

#if nssv_CONFIG_CONFIRMS_COMPILATION_ERRORS

#if nssv_HAVE_NULLPTR

string_view sv( nullptr );

EXPECT( true );

#else

EXPECT( !!"nullptr not available (no C++11)." );

#endif

#else

EXPECT( !!"Compile-time verification not enabled (nssv_CONFIG_CONFIRMS_COMPILATION_ERRORS: 0)." );

#endif

}

// Assignment:

CASE( "string_view: Disallows to copy-assign from nullptr (C++11)" )

{

#if nssv_CONFIG_CONFIRMS_COMPILATION_ERRORS

#if nssv_HAVE_NULLPTR

string_view sv;

sv = nullptr;

EXPECT( true );

#else

EXPECT( !!"nullptr not available (no C++11)." );

#endif

#else

EXPECT( !!"Compile-time verification not enabled (nssv_CONFIG_CONFIRMS_COMPILATION_ERRORS: 0)." );

#endif

}

CASE( "string_view: Allows to copy-assign from empty string_view" )

{

string_view sv1;

string_view sv2;

sv2 = sv1;

// use parenthesis with data() to prevent lest from using sv.data() as C-string:

EXPECT( sv2.size() == size_type( 0 ) );

EXPECT( (sv2.data() == nssv_nullptr) );

}

CASE( "string_view: Allows to copy-assign from non-empty string_view" )

{

string_view sv1( "hello world", 5 );

string_view sv2;

sv2 = sv1;

// use parenthesis with data() to prevent lest from using sv.data() as C-string:

EXPECT( sv2.size() == sv1.size() );

EXPECT( (sv2.data() == sv1.data()) );

EXPECT( *(sv2.data() + 0) == 'h' );

EXPECT( *(sv2.data() + 4) == 'o' );

}

// 24.4.2.2 Iterator support:

CASE( "string_view: Allows forward iteration" )

{

char hello[] = "hello";

string_view sv( hello );

for ( string_view::iterator pos = sv.begin(); pos != sv.end(); ++pos )

{

typedef std::iterator_traits< string_view::iterator >::difference_type difference_type;

difference_type i = std::distance( sv.begin(), pos );

EXPECT( *pos == *(sv.data() + i) );

}

}

CASE( "string_view: Allows const forward iteration" )

{

char hello[] = "hello";

string_view sv( hello );

for ( string_view::const_iterator pos = sv.begin(); pos != sv.end(); ++pos )

{

typedef std::iterator_traits< string_view::const_iterator >::difference_type difference_type;

difference_type i = std::distance( sv.cbegin(), pos );

EXPECT( *pos == *(sv.data() + i) );

}

}

CASE( "string_view: Allows reverse iteration" )

{

char hello[] = "hello";

string_view sv( hello );

for ( string_view::reverse_iterator pos = sv.rbegin(); pos != sv.rend(); ++pos )

{

typedef std::iterator_traits< string_view::reverse_iterator >::difference_type difference_type;

difference_type dist = std::distance( sv.rbegin(), pos );

EXPECT( *pos == *(sv.data() + sv.size() - 1 - dist) );

}

}

CASE( "string_view: Allows const reverse iteration" )

{

char hello[] = "hello";

string_view sv( hello );

for ( string_view::const_reverse_iterator pos = sv.crbegin(); pos != sv.crend(); ++pos )

{

typedef std::iterator_traits< string_view::const_reverse_iterator >::difference_type difference_type;

difference_type dist = std::distance( sv.crbegin(), pos );

EXPECT( *pos == *(sv.data() + sv.size() - 1 - dist) );

}

}

// 24.4.2.3 Capacity:

CASE( "string_view: Allows to obtain the size of the view via size()" )

{

char hello[] = "hello";

string_view sv( hello );

EXPECT( sv.size() == std::char_traits<char>::length(hello) );

}

CASE( "string_view: Allows to obtain the size of the view via length()" )

{

char hello[] = "hello";

string_view sv( hello );

EXPECT( sv.length() == std::char_traits<char>::length(hello) );

}

CASE( "string_view: Allows to obtain the maximum size a view can be via max_size()" )

{

// "large"

EXPECT( string_view().max_size() >= (std::numeric_limits< string_view::size_type >::max)() / 10 );

}

CASE( "string_view: Allows to check for an empty string_view via empty()" )

{

string_view sve;

string_view svne("hello");

EXPECT( sve.size() == size_type( 0 ) );

EXPECT( sve.empty() );

EXPECT_NOT( svne.empty() );

}

// 24.4.2.4 Element access:

CASE( "string_view: Allows to observe an element via array indexing" )

{

// Requires: index < sv.size()

char hello[] = "hello";

string_view sv( hello );

for ( size_type i = 0; i < sv.size(); ++i )

{

EXPECT( sv[i] == hello[i] );

}

}

CASE( "string_view: Allows to observe an element via at()" )

{

char hello[] = "hello";

string_view sv( hello );

for ( size_type i = 0; i < sv.size(); ++i )

{

EXPECT( sv.at(i) == hello[i] );

}

}

CASE( "string_view: Throws at observing an element via at() with an index of size() or larger" )

{

string_view sv("hello");

EXPECT_THROWS( sv.at( sv.size() ) );

EXPECT_NO_THROW( sv.at( sv.size() - 1 ) );

}

CASE( "string_view: Allows to observe elements via data()" )

{

char hello[] = "hello";

string_view sv( hello );

EXPECT( *sv.data() == *sv.begin() );

for ( size_type i = 0; i < sv.size(); ++i )

{

EXPECT( sv.data()[i] == hello[i] );

}

}

CASE( "string_view: Yields nullptr (or NULL) with data() for an empty string_view" )

{

string_view sv;

// use parenthesis with data() to prevent lest from using sv.data() as C-string:

EXPECT( (sv.data() == nssv_nullptr) );

}

// 24.4.2.5 Modifiers:

CASE( "string_view: Allows to remove a prefix of n elements" )

{

char hello[] = "hello world";

string_view sv( hello );

sv.remove_prefix( 6 );

EXPECT( sv.size() == size_type( 5 ) );

EXPECT( std::equal( sv.begin(), sv.end(), hello + 6) );

}

CASE( "string_view: Allows to remove a suffix of n elements" )

{

char hello[] = "hello world";

string_view sv( hello );

sv.remove_suffix( 6 );

EXPECT( sv.size() == size_type( 5 ) );

EXPECT( std::equal( sv.begin(), sv.end(), hello ) );

}

CASE( "string_view: Allows to swap with other string_view" )

{

char hello[] = "hello";

char world[] = "world";

string_view sv1( hello );

string_view sv2( world );

sv1.swap( sv2 );

EXPECT( std::equal( sv1.begin(), sv1.end(), world ) );

EXPECT( std::equal( sv2.begin(), sv2.end(), hello ) );

}

// 24.4.2.6 String operations:

CASE( "string_view: Allows to copy a substring of length n, starting at position pos (default: 0) via copy()" )

{

char hello[] = "hello world";

string_view sv( hello );

{

std::vector<string_view::value_type> vec( sv.size() );

sv.copy( data(vec), vec.size() );

EXPECT( std::equal( vec.begin(), vec.end(), hello ) );

}{

std::size_t offset = 3u; std::size_t length = 4u;

std::vector<string_view::value_type> vec( length );

sv.copy( data(vec), length, offset );

EXPECT( std::equal( vec.begin(), vec.end(), hello + offset ) );

}

}

CASE( "string_view: Throws if requested position of copy() exceeds string_view's size()" )

{

string_view sv("hello world");

std::vector<string_view::value_type> vec( sv.size() );

EXPECT_THROWS( sv.copy( data(vec), sv.size() - 4, sv.size() + 1 ) );

EXPECT_NO_THROW( sv.copy( data(vec), sv.size() - 4, sv.size() + 0 ) );

}

CASE( "string_view: Allow to obtain a sub string, starting at position pos (default: 0) and of length n (default full), via substr()" )

{

char hello[] = "hello world";

string_view sv( hello );

{

#if nssv_USES_STD_STRING_VIEW && defined(__GNUC__)

EXPECT( !!"std::string_view::substr(), with default pos, count is not available with GNU C" );

#else

EXPECT( std::equal( sv.begin(), sv.end(), sv.substr().begin() ) );

#endif

}{

string_view subv = sv.substr( 6 );

EXPECT( std::equal( subv.begin(), subv.end(), hello + 6 ) );

}{

string_view subv = sv.substr( 3, 4 );

EXPECT( std::equal( subv.begin(), subv.end(), hello + 3 ) );

}

}

CASE( "string_view: Throws if requested position of substr() exceeds string_view's size()" )

{

string_view sv("hello world");

EXPECT_THROWS( sv.substr( sv.size() + 1 ) );

EXPECT_NO_THROW( sv.substr( sv.size() + 0 ) );

}

CASE( "string_view: Allows to lexically compare to another string_view via compare(), (1)" )

{

char hello[] = "hello";

char world[] = "world";

EXPECT( string_view( hello ).compare( string_view( hello ) ) == 0 );

EXPECT( string_view( hello ).compare( string_view( world ) ) < 0 );

EXPECT( string_view( world ).compare( string_view( hello ) ) > 0 );

char hello_sp[] = "hello ";

EXPECT( string_view( hello ).compare( string_view( hello_sp ) ) < 0 );

EXPECT( string_view( hello_sp ).compare( string_view( hello ) ) > 0 );

}

CASE( "string_view: Allows to compare empty string_views as equal via compare(), (1)" )

{

EXPECT( string_view().compare( string_view() ) == 0 );

}

CASE( "string_view: Allows to constexpr-compare string_views via compare(), (1) (C++14)" )

{

#if nssv_HAVE_CONSTEXPR_14

static_assert( string_view( "hello" ).compare( string_view( "hello" ) ) == 0, "" );

static_assert( string_view( "hello" ).compare( string_view( "world" ) ) < 0, "" );

static_assert( string_view( "world" ).compare( string_view( "hello" ) ) > 0, "" );

#else

EXPECT( !!"C++14 constexpr is not available (no C++14)" );

#endif

}

CASE( "string_view: Allows to compare a sub string to another string_view via compare(), (2)" )

{

string_view sv1("hello world");

string_view sv2("world");

EXPECT( sv1.compare ( 0, sv1.length(), sv1 ) == 0 );

EXPECT( sv1.compare ( 6, 5, sv2 ) == 0 );

EXPECT( sv1.compare ( 0, 5, sv2 ) < 0 );

EXPECT( sv2.compare ( 0, 5, sv1 ) > 0 );

}

CASE( "string_view: Allows to compare a sub string to another string_view sub string via compare(), (3)" )

{

string_view sv1("hello world");

EXPECT( sv1.compare ( 0, sv1.length(), sv1 ) == 0 );

EXPECT( sv1.compare ( 6, 5, sv1, 6, 5 ) == 0 );

EXPECT( sv1.compare ( 0, 5, sv1, 6, 5 ) < 0 );

EXPECT( sv1.compare ( 6, 5, sv1, 0, 5 ) > 0 );

}

CASE( "string_view: Allows to compare to a C-string via compare(), (4)" )

{

char hello[] = "hello";

char world[] = "world";

EXPECT( string_view( hello ).compare( hello ) == 0 );

EXPECT( string_view( hello ).compare( world ) < 0 );

EXPECT( string_view( world ).compare( hello ) > 0 );

}

CASE( "string_view: Allows to compare a sub string to a C-string via compare(), (5)" )

{

char hello[] = "hello world";

char world[] = "world";

EXPECT( string_view( hello ).compare( 6, 5, world ) == 0 );

EXPECT( string_view( hello ).compare( world ) < 0 );

EXPECT( string_view( world ).compare( hello ) > 0 );

}

CASE( "string_view: Allows to compare a sub string to a C-string prefix via compare(), (6)" )

{

char hello[] = "hello world";

char world[] = "world";

EXPECT( string_view( hello ).compare( 6, 5, world, 5 ) == 0 );

EXPECT( string_view( hello ).compare( 0, 5, world, 5 ) < 0 );

EXPECT( string_view( hello ).compare( 6, 5, hello, 5 ) > 0 );

}

// 24.4.2.7 Searching:

#if nssv_HAVE_STARTS_WITH

CASE( "string_view: Allows to check for a prefix string_view via starts_with(), (1)" )

{

char hello[] = "hello world";

EXPECT( string_view( hello ).starts_with( string_view( hello ) ) );

EXPECT( string_view( hello ).starts_with( string_view("hello") ) );

EXPECT_NOT( string_view( hello ).starts_with( string_view("world") ) );

}

CASE( "string_view: Allows to check for a prefix character via starts_with(), (2)" )

{

char hello[] = "hello world";

EXPECT( string_view( hello ).starts_with( 'h' ) );

EXPECT_NOT( string_view( hello ).starts_with( 'e' ) );

}

CASE( "string_view: Allows to check for a prefix C-string via starts_with(), (3)" )

{

char hello[] = "hello world";

EXPECT( string_view( hello ).starts_with( hello ) );

EXPECT( string_view( hello ).starts_with("hello") );

EXPECT_NOT( string_view( hello ).starts_with("world") );

}

#endif // nssv_HAVE_STARTS_WITH

#if nssv_HAVE_ENDS_WITH

CASE( "string_view: Allows to check for a suffix string_view via ends_with(), (1)" )

{

char hello[] = "hello world";

EXPECT( string_view( hello ).ends_with( string_view( hello ) ) );

EXPECT( string_view( hello ).ends_with( string_view("world") ) );

EXPECT_NOT( string_view( hello ).ends_with( string_view("hello") ) );

}

CASE( "string_view: Allows to check for a suffix character via ends_with(), (2)" )

{

char hello[] = "hello world";

EXPECT( string_view( hello ).ends_with( 'd' ) );

EXPECT_NOT( string_view( hello ).ends_with( 'l' ) );

}

CASE( "string_view: Allows to check for a suffix C-string via ends_with(), (3)" )

{

char hello[] = "hello world";

EXPECT( string_view( hello ).ends_with( hello ) );

EXPECT( string_view( hello ).ends_with("world") );

EXPECT_NOT( string_view( hello ).ends_with("hello") );

}

#endif // nssv_HAVE_ENDS_WITH

CASE( "string_view: Allows to search for a string_view substring, starting at position pos (default: 0) via find(), (1)" )

{

char hello[] = "hello world";

string_view sv( hello );

EXPECT( sv.find( sv ) == size_type( 0 ) );

EXPECT( sv.find( sv, 1 ) == string_view::npos );

EXPECT( sv.find( string_view("world" ) ) == size_type( 6 ) );

EXPECT( sv.find( string_view("world" ), 6 ) == size_type( 6 ) );

EXPECT( sv.find( string_view("world" ), 7 ) == string_view::npos );

}

CASE( "string_view: Allows to search for a character, starting at position pos (default: 0) via find(), (2)" )

{

char hello[] = "hello world";

string_view sv( hello );

EXPECT( sv.find('h' ) == size_type( 0 ) );

EXPECT( sv.find('h', 1 ) == string_view::npos );

EXPECT( sv.find('w' ) == size_type( 6 ) );

EXPECT( sv.find('w', 6 ) == size_type( 6 ) );

EXPECT( sv.find('w', 7 ) == string_view::npos );

}

CASE( "string_view: Allows to search for a C-string substring, starting at position pos and of length n via find(), (3)" )

{

char hello[] = "hello world";

string_view sv( hello );

EXPECT( sv.find( hello , 0, sv.size() ) == size_type( 0 ) );

EXPECT( sv.find( hello , 1, sv.size() ) == string_view::npos );

EXPECT( sv.find("world", 0, 5 ) == size_type( 6 ) );

EXPECT( sv.find("world", 6, 5 ) == size_type( 6 ) );

EXPECT( sv.find("world", 7, 4 ) == string_view::npos );

EXPECT( sv.find("world", 3, 0 ) == size_type( 3 ) );

}

CASE( "string_view: Allows to search for a C-string substring, starting at position pos (default: 0) via find(), (4)" )

{

char hello[] = "hello world";

string_view sv( hello );

EXPECT( sv.find( hello ) == size_type( 0 ) );

EXPECT( sv.find( hello , 1 ) == string_view::npos );

EXPECT( sv.find("world" ) == size_type( 6 ) );

EXPECT( sv.find("world", 6 ) == size_type( 6 ) );

EXPECT( sv.find("world", 7 ) == string_view::npos );

}

CASE( "string_view: Allows to search backwards for a string_view substring, starting at position pos (default: npos) via rfind(), (1)" )

{

char hello[] = "hello world";

string_view sv( hello );

EXPECT( sv.rfind( sv ) == size_type( 0 ) );

EXPECT( sv.rfind( sv, 3 ) == size_type( 0 ) );

EXPECT( sv.rfind( string_view( ) ) == size_type(11 ) );

EXPECT( sv.rfind( string_view("world" ) ) == size_type( 6 ) );

EXPECT( sv.rfind( string_view("world" ), 6 ) == size_type( 6 ) );

EXPECT( sv.rfind( string_view("world" ), 5 ) == string_view::npos );

EXPECT( sv.rfind( string_view("hello world, a longer text" ) ) == string_view::npos );

}

CASE( "string_view: Allows to search backwards for a character, starting at position pos (default: npos) via rfind(), (2)" )

{

char hello[] = "hello world";

string_view sv( hello );

EXPECT( sv.rfind('h' ) == size_type( 0 ) );

EXPECT( sv.rfind('e' ) == size_type( 1 ) );

EXPECT( sv.rfind('e', 0 ) == string_view::npos );

EXPECT( sv.rfind('w' ) == size_type( 6 ) );

EXPECT( sv.rfind('w', 6 ) == size_type( 6 ) );

EXPECT( sv.rfind('w', 5 ) == string_view::npos );

}

CASE( "string_view: Allows to search backwards for a C-string substring, starting at position pos and of length n via rfind(), (3)" )

{

char hello[] = "hello world";

string_view sv( hello );

EXPECT( sv.rfind( hello ) == size_type( 0 ) );

EXPECT( sv.rfind( hello , 0, 5 ) == size_type( 0 ) );

EXPECT( sv.rfind( hello , 1, 5 ) == size_type( 0 ) );

EXPECT( sv.rfind("world", 10, 5 ) == size_type( 6 ) );

EXPECT( sv.rfind("world", 6, 5 ) == size_type( 6 ) );

EXPECT( sv.rfind("world", 5, 5 ) == string_view::npos );

}

CASE( "string_view: Allows to search backwards for a C-string substring, starting at position pos (default: 0) via rfind(), (4)" )

{

char hello[] = "hello world";

string_view sv( hello );

EXPECT( sv.rfind( hello ) == size_type( 0 ) );

EXPECT( sv.rfind( hello , 3 ) == size_type( 0 ) );

EXPECT( sv.rfind("world" ) == size_type( 6 ) );

EXPECT( sv.rfind("world", 6 ) == size_type( 6 ) );

EXPECT( sv.rfind("world", 5 ) == string_view::npos );

}

CASE( "string_view: Allows to search for the first occurrence of any of the characters specified in a string view, starting at position pos (default: 0) via find_first_of(), (1)" )

{

char hello[] = "hello world";

string_view sv( hello );

EXPECT( sv.find_first_of( sv ) == size_type( 0 ) );

EXPECT( sv.find_first_of( sv, 3 ) == size_type( 3 ) );

EXPECT( sv.find_first_of( string_view("xwo" ) ) == size_type( 4 ) );

EXPECT( sv.find_first_of( string_view("wdx" ), 6 ) == size_type( 6 ) );

EXPECT( sv.find_first_of( string_view("wxy" ), 7 ) == string_view::npos );

}

CASE( "string_view: Allows to search for a character, starting at position pos (default: 0) via find_first_of(), (2)" )

{

char hello[] = "hello world";

string_view sv( hello );

EXPECT( sv.find_first_of('h' ) == size_type( 0 ) );

EXPECT( sv.find_first_of('h', 1 ) == string_view::npos );

EXPECT( sv.find_first_of('w' ) == size_type( 6 ) );

EXPECT( sv.find_first_of('w', 6 ) == size_type( 6 ) );

EXPECT( sv.find_first_of('w', 7 ) == string_view::npos );

}

CASE( "string_view: Allows to search for the first occurrence of any of the characters specified in a C-string, starting at position pos and of length n via find_first_of(), (3)" )

{

char hello[] = "hello world";

string_view sv( hello );

EXPECT( sv.find_first_of( hello , 0, sv.size() ) == size_type( 0 ) );

EXPECT( sv.find_first_of( hello , 1, sv.size() ) == size_type( 1 ) );

EXPECT( sv.find_first_of( "xwy", 0, 3 ) == size_type( 6 ) );

EXPECT( sv.find_first_of( "xwy", 6, 3 ) == size_type( 6 ) );

EXPECT( sv.find_first_of( "xwy", 7, 3 ) == string_view::npos );

EXPECT( sv.find_first_of( "xyw", 0, 2 ) == string_view::npos );

}

CASE( "string_view: Allows to search for the first occurrence of any of the characters specified in a C-string, starting at position pos via find_first_of(), (4)" )

{

char hello[] = "hello world";

string_view sv( hello );

EXPECT( sv.find_first_of( hello , 0 ) == size_type( 0 ) );

EXPECT( sv.find_first_of( hello , 1 ) == size_type( 1 ) );

EXPECT( sv.find_first_of( "xwy", 0 ) == size_type( 6 ) );

EXPECT( sv.find_first_of( "xwy", 6 ) == size_type( 6 ) );

EXPECT( sv.find_first_of( "xwy", 7 ) == string_view::npos );

}

CASE( "string_view: Allows to search backwards for the last occurrence of any of the characters specified in a string view, starting at position pos (default: npos) via find_last_of(), (1)" )

{

char hello[] = "hello world";

char empty[] = "";

string_view sv( hello );

string_view sve( empty );

EXPECT( sv.find_last_of( sv ) == size_type( 10 ) );

EXPECT( sv.find_last_of( sv, 3 ) == size_type( 3 ) );

EXPECT( sv.find_last_of( string_view("xwo" ) ) == size_type( 7 ) );

EXPECT( sv.find_last_of( string_view("wdx" ), 6 ) == size_type( 6 ) );

EXPECT( sv.find_last_of( string_view("wxy" ), 7 ) == size_type( 6 ) );

EXPECT( sve.find_last_of( string_view("x") ) == string_view::npos ); // issue 20 (endless loop)

}

CASE( "string_view: Allows to search backwards for a character, starting at position pos (default: 0) via find_last_of(), (2)" )

{

char hello[] = "hello world";

string_view sv( hello );

EXPECT( sv.find_last_of('h' ) == size_type( 0 ) );

EXPECT( sv.find_last_of('l', 1 ) == string_view::npos );

EXPECT( sv.find_last_of('w' ) == size_type( 6 ) );

EXPECT( sv.find_last_of('w', 6 ) == size_type( 6 ) );

EXPECT( sv.find_last_of('w', 5 ) == string_view::npos );

}

CASE( "string_view: Allows to search backwards for the first occurrence of any of the characters specified in a C-string, starting at position pos and of length n via find_last_of(), (3)" )

{

char hello[] = "hello world";

string_view sv( hello );

EXPECT( sv.find_last_of( hello , 0, sv.size() ) == size_type( 0 ) );

EXPECT( sv.find_last_of( hello , 1, sv.size() ) == size_type( 1 ) );

EXPECT( sv.find_last_of("xwy", 10, 3 ) == size_type( 6 ) );

EXPECT( sv.find_last_of("xwy", 6, 3 ) == size_type( 6 ) );

EXPECT( sv.find_last_of("xwy", 5, 3 ) == string_view::npos );

EXPECT( sv.find_last_of("xyw", 10, 2 ) == string_view::npos );

}

CASE( "string_view: Allows to search backwards for the first occurrence of any of the characters specified in a C-string, starting at position pos via find_last_of(), (4)" )

{

char hello[] = "hello world";

string_view sv( hello );

EXPECT( sv.find_last_of( hello , 0 ) == size_type( 0 ) );

EXPECT( sv.find_last_of( hello , 1 ) == size_type( 1 ) );

EXPECT( sv.find_last_of( "xwy", 10 ) == size_type( 6 ) );

EXPECT( sv.find_last_of( "xwy", 6 ) == size_type( 6 ) );

EXPECT( sv.find_last_of( "xwy", 5 ) == string_view::npos );

}

CASE( "string_view: Allows to search for the first character not specified in a string view, starting at position pos (default: 0) via find_first_not_of(), (1)" )

{

char hello[] = "hello world";

string_view sv( hello );

EXPECT( sv.find_first_not_of( sv ) == string_view::npos );

EXPECT( sv.find_first_not_of( sv, 3 ) == string_view::npos );

EXPECT( sv.find_first_not_of( string_view("helo " ) ) == size_type( 6 ) );

EXPECT( sv.find_first_not_of( string_view("helo " ), 6 ) == size_type( 6 ) );

EXPECT( sv.find_first_not_of( string_view("helo " ), 7 ) == size_type( 8 ) );

EXPECT( sv.find_first_not_of( string_view("helo wr" ) ) == size_type( 10 ) );

}

CASE( "string_view: Allows to search for the first character not equal to the specified character, starting at position pos (default: 0) via find_first_not_of(), (2)" )

{

char hello[] = "hello world";

string_view sv( hello );

EXPECT( sv.find_first_not_of('h' ) == size_type( 1 ) );

EXPECT( sv.find_first_not_of('h', 1 ) == size_type( 1 ) );

EXPECT( sv.find_first_not_of('w' ) == size_type( 0 ) );

EXPECT( sv.find_first_not_of('w', 6 ) == size_type( 7 ) );

EXPECT( sv.find_first_not_of('d', 10 ) == string_view::npos );

}

CASE( "string_view: Allows to search for the first character not equal to any of the characters specified in a C-string, starting at position pos and of length n via find_first_not_of(), (3)" )

{

char hello[] = "hello world";

string_view sv( hello );

EXPECT( sv.find_first_not_of( hello, 0, sv.size() ) == string_view::npos );

EXPECT( sv.find_first_not_of( hello, 3, sv.size() ) == string_view::npos );

EXPECT( sv.find_first_not_of( "helo " , 0, 5 ) == size_type( 6 ) );

EXPECT( sv.find_first_not_of( "helo " , 6, 5 ) == size_type( 6 ) );

EXPECT( sv.find_first_not_of( "helo " , 7, 5 ) == size_type( 8 ) );

EXPECT( sv.find_first_not_of( "helo wr", 0, 7 ) == size_type( 10 ) );

EXPECT( sv.find_first_not_of( "he" , 0, 1 ) == size_type( 1 ) );

}

CASE( "string_view: Allows to search for the first character not equal to any of the characters specified in a C-string, starting at position pos via find_first_not_of(), (4)" )

{

char hello[] = "hello world";

string_view sv( hello );

EXPECT( sv.find_first_not_of( hello , 0 ) == string_view::npos );

EXPECT( sv.find_first_not_of( hello , 3 ) == string_view::npos );

EXPECT( sv.find_first_not_of( "helo " , 0 ) == size_type( 6 ) );

EXPECT( sv.find_first_not_of( "helo " , 6 ) == size_type( 6 ) );

EXPECT( sv.find_first_not_of( "helo " , 7 ) == size_type( 8 ) );

EXPECT( sv.find_first_not_of( "helo wr", 0 ) == size_type( 10 ) );

}

CASE( "string_view: Allows to search backwards for the first character not specified in a string view, starting at position pos (default: npos) via find_last_not_of(), (1)" )

{

char hello[] = "hello world";

char empty[] = "";

string_view sv( hello );

string_view sve( empty );

EXPECT( sv.find_last_not_of( sv ) == string_view::npos );

EXPECT( sv.find_last_not_of( sv, 3 ) == string_view::npos );

EXPECT( sv.find_last_not_of( string_view("world " ) ) == size_type( 1 ) );

EXPECT( sv.find_last_not_of( string_view("heo " ), 4 ) == size_type( 3 ) );

EXPECT( sv.find_last_not_of( string_view("heo " ), 3 ) == size_type( 3 ) );

EXPECT( sv.find_last_not_of( string_view("heo " ), 2 ) == size_type( 2 ) );

EXPECT( sv.find_last_not_of( string_view("x" ) ) == size_type( 10 ) );

EXPECT( sve.find_last_not_of( string_view("x") ) == string_view::npos ); // issue 20 (endless loop)

}

CASE( "string_view: Allows to search backwards for the first character not equal to the specified character, starting at position pos (default: npos) via find_last_not_of(), (2)" )

{

char hello[] = "hello world";

string_view sv( hello );

EXPECT( sv.find_last_not_of('d' ) == size_type( 9 ) );

EXPECT( sv.find_last_not_of('d', 10 ) == size_type( 9 ) );

EXPECT( sv.find_last_not_of('d', 9 ) == size_type( 9 ) );

EXPECT( sv.find_last_not_of('d', 8 ) == size_type( 8 ) );

EXPECT( sv.find_last_not_of('d', 0 ) == size_type( 0 ) );

}

CASE( "string_view: Allows to search backwards for the first character not equal to any of the characters specified in a C-string, starting at position pos and of length n via find_last_not_of(), (3)" )

{

char hello[] = "hello world";

string_view sv( hello );

EXPECT( sv.find_last_not_of( hello, 0, sv.size() ) == string_view::npos );

EXPECT( sv.find_last_not_of( hello, 3, sv.size() ) == string_view::npos );

EXPECT( sv.find_last_not_of( "world ", 10, 6 ) == size_type( 1 ) );

EXPECT( sv.find_last_not_of( "heo " , 4, 4 ) == size_type( 3 ) );

EXPECT( sv.find_last_not_of( "heo " , 3, 4 ) == size_type( 3 ) );

EXPECT( sv.find_last_not_of( "heo " , 2, 4 ) == size_type( 2 ) );

EXPECT( sv.find_last_not_of( "x" ) == size_type( 10 ) );

}

CASE( "string_view: Allows to search backwards for the first character not equal to any of the characters specified in a C-string, starting at position pos via find_last_not_of(), (4)" )

{

char hello[] = "hello world";

string_view sv( hello );

EXPECT( sv.find_last_not_of( hello , 0 ) == string_view::npos );

EXPECT( sv.find_last_not_of( hello , 3 ) == string_view::npos );

EXPECT( sv.find_last_not_of( "world ", 10 ) == size_type( 1 ) );

EXPECT( sv.find_last_not_of( "heo " , 4 ) == size_type( 3 ) );

EXPECT( sv.find_last_not_of( "heo " , 3 ) == size_type( 3 ) );

EXPECT( sv.find_last_not_of( "heo " , 2 ) == size_type( 2 ) );

EXPECT( sv.find_last_not_of( "x" ) == size_type( 10 ) );

}

CASE( "string_view: Allows to create a string_view, wstring_view, u16string_view, u32string_view via literal \"sv\"" )

{

#if nssv_CONFIG_STD_SV_OPERATOR

#if nssv_STD_SV_OR( nssv_HAVE_STD_DEFINED_LITERALS )

using namespace nonstd::literals::string_view_literals;

string_view sv1 = "abc"sv;

wstring_view sv2 = L"abc"sv;

EXPECT( sv1.size() == size_type( 3 ) );

EXPECT( sv2.size() == size_type( 3 ) );

#if nssv_HAVE_WCHAR16_T

u16string_view sv3 = u"abc"sv;

EXPECT( sv3.size() == size_type( 3 ) );

#endif

#if nssv_HAVE_WCHAR32_T

u32string_view sv4 = U"abc"sv;

EXPECT( sv4.size() == size_type( 3 ) );

#endif

#else

EXPECT( !!"Literal operator 'sv' for string_view not available (no C++11)." );

#endif

#else

EXPECT( !!"Literal operator 'sv' for string_view not available (nssv_CONFIG_STD_SV_OPERATOR=0)." );

#endif

}

CASE( "string_view: Allows to create a string_view via literal \"sv\", using namespace nonstd::literals::string_view_literals" )

{

#if nssv_CONFIG_STD_SV_OPERATOR

#if nssv_STD_SV_OR( nssv_HAVE_STD_DEFINED_LITERALS )

using namespace nonstd::literals::string_view_literals;

string_view sv1 = "abc\0\0def";

string_view sv2 = "abc\0\0def"sv;

EXPECT( sv1.size() == size_type( 3 ) );

EXPECT( sv2.size() == size_type( 8 ) );

#else

EXPECT( !!"Literal operator 'sv' for string_view not available (no C++11)." );

#endif

#else

EXPECT( !!"Literal operator 'sv' for string_view not available (nssv_CONFIG_STD_SV_OPERATOR=0)." );

#endif

}

CASE( "string_view: Allows to create a string_view via literal \"sv\", using namespace nonstd::string_view_literals" )

{

#if nssv_CONFIG_STD_SV_OPERATOR

#if nssv_STD_SV_OR( nssv_HAVE_STD_DEFINED_LITERALS )

#if nssv_STD_SV_OR( nssv_HAVE_INLINE_NAMESPACE )

using namespace nonstd::string_view_literals;

string_view sv1 = "abc\0\0def";

string_view sv2 = "abc\0\0def"sv;

EXPECT( sv1.size() == size_type( 3 ) );

EXPECT( sv2.size() == size_type( 8 ) );

#else

EXPECT( !!"Inline namespaces for literal operator 'sv' for string_view not available (no C++11)." );

#endif

#else

EXPECT( !!"Literal operator 'sv' for string_view not available (no C++11)." );

#endif

#else

EXPECT( !!"Literal operator 'sv' for string_view not available (nssv_CONFIG_STD_SV_OPERATOR=0)." );

#endif

}

CASE( "string_view: Allows to create a string_view via literal \"sv\", using namespace nonstd::literals" )

{

#if nssv_CONFIG_STD_SV_OPERATOR

#if nssv_STD_SV_OR( nssv_HAVE_STD_DEFINED_LITERALS )

#if nssv_STD_SV_OR( nssv_HAVE_INLINE_NAMESPACE )

using namespace nonstd::literals;

string_view sv1 = "abc\0\0def";

string_view sv2 = "abc\0\0def"sv;

EXPECT( sv1.size() == size_type( 3 ) );

EXPECT( sv2.size() == size_type( 8 ) );

#else

EXPECT( !!"Inline namespaces for literal operator 'sv' for string_view not available (no C++11)." );

#endif

#else

EXPECT( !!"Literal operator 'sv' for string_view not available (no C++11)." );

#endif

#else

EXPECT( !!"Literal operator 'sv' for string_view not available (nssv_CONFIG_STD_SV_OPERATOR=0)." );

#endif

}

CASE( "string_view: Allows to create a string_view, wstring_view, u16string_view, u32string_view via literal \"_sv\"" )

{

#if nssv_CONFIG_USR_SV_OPERATOR

#if nssv_STD_SV_OR( nssv_HAVE_USER_DEFINED_LITERALS )

using namespace nonstd::literals::string_view_literals;

string_view sv1 = "abc"_sv;

wstring_view sv2 = L"abc"_sv;

EXPECT( sv1.size() == size_type( 3 ) );

EXPECT( sv2.size() == size_type( 3 ) );

#if nssv_HAVE_WCHAR16_T

u16string_view sv3 = u"abc"_sv;

EXPECT( sv3.size() == size_type( 3 ) );

#endif

#if nssv_HAVE_WCHAR32_T

u32string_view sv4 = U"abc"_sv;

EXPECT( sv4.size() == size_type( 3 ) );

#endif

#else

EXPECT( !!"Literal operator '_sv' for string_view not available (no C++11)." );

#endif

#else

EXPECT( !!"Literal operator '_sv' for string_view not available (nssv_CONFIG_USR_SV_OPERATOR=0)." );

#endif

}

CASE( "string_view: Allows to create a string_view via literal \"_sv\", using namespace nonstd::literals::string_view_literals" )

{

#if nssv_CONFIG_USR_SV_OPERATOR

#if nssv_STD_SV_OR( nssv_HAVE_USER_DEFINED_LITERALS )

using namespace nonstd::literals::string_view_literals;

string_view sv1 = "abc\0\0def";

string_view sv2 = "abc\0\0def"_sv;

EXPECT( sv1.size() == size_type( 3 ) );

EXPECT( sv2.size() == size_type( 8 ) );

#else

EXPECT( !!"Literal operator '_sv' for string_view not available (no C++11)." );

#endif

#else

EXPECT( !!"Literal operator '_sv' for string_view not available (nssv_CONFIG_USR_SV_OPERATOR=0)." );

#endif

}

CASE( "string_view: Allows to create a string_view via literal \"_sv\", using namespace nonstd::string_view_literals" )

{

#if nssv_CONFIG_USR_SV_OPERATOR

#if nssv_STD_SV_OR( nssv_HAVE_USER_DEFINED_LITERALS )

#if nssv_STD_SV_OR( nssv_HAVE_INLINE_NAMESPACE )

using namespace nonstd::string_view_literals;

string_view sv1 = "abc\0\0def";

string_view sv2 = "abc\0\0def"_sv;