File: test_operators.cpp

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#include <wibble/config.h>
#include <wibble/operators.h>
using namespace std;
using namespace wibble::operators;

#include <wibble/tests/tut-wibble.h>

namespace tut {

struct operators_shar {};
TESTGRP( operators );

static set<int> mkset(int i1)
{
	set<int> a; a.insert(i1); return a;
}
static set<int> mkset(int i1, int i2)
{
	set<int> a; a.insert(i1); a.insert(i2); return a;
}
static set<int> mkset(int i1, int i2, int i3)
{
	set<int> a; a.insert(i1); a.insert(i2); a.insert(i3); return a;
}
static set<int> mkset(int i1, int i2, int i3, int i4)
{
	set<int> a; a.insert(i1); a.insert(i2); a.insert(i3); a.insert(i4); return a;
}

template<> template<>
void to::test< 1 >() {
    set< int > a = mkset(4, 5);
	set< int > b = mkset(5);
    set< int > c = a & b;
    ensure_equals( c.size(), 1u );
    ensure( c.find( 4 ) == c.end() );
    ensure( c.find( 5 ) != c.end() );
    c = a | b;
    ensure_equals( c.size(), 2u );
    ensure( c.find( 4 ) != c.end() );
    ensure( c.find( 5 ) != c.end() );
    c = a - b;
    ensure_equals( c.size(), 1u );
    ensure( c.find( 4 ) != c.end() );
    ensure( c.find( 5 ) == c.end() );
}

template<> template<>
void to::test< 2 >() {
    set< int > a = mkset(4, 3);
	set< int > b = mkset(5);
    b |= 3;
    ensure_equals( b.size(), 2u );
    ensure( b.find( 2 ) == b.end() );
    ensure( b.find( 3 ) != b.end() );
    ensure( b.find( 4 ) == b.end() );
    ensure( b.find( 5 ) != b.end() );
    b |= a;
    ensure_equals( b.size(), 3u );
    ensure( b.find( 3 ) != b.end() );
    ensure( b.find( 4 ) != b.end() );
    ensure( b.find( 5 ) != b.end() );
    b &= a;
    ensure_equals( b.size(), 2u );
    ensure( b.find( 3 ) != b.end() );
    ensure( b.find( 4 ) != b.end() );
    ensure( b.find( 5 ) == b.end() );
    b.insert( b.begin(), 2 );
    b -= a;
    ensure_equals( b.size(), 1u );
    ensure( b.find( 2 ) != b.end() );
    ensure( b.find( 3 ) == b.end() );
    ensure( b.find( 4 ) == b.end() );
}

template<> template<>
void to::test< 3 >() {
    set< int > a;

    a = a | wibble::Empty<int>();
    ensure_equals( a.size(), 0u );

    a = a | wibble::Singleton<int>(1);
    ensure_equals( a.size(), 1u );
    ensure( a.find( 1 ) != a.end() );

    a = a - wibble::Empty<int>();
    ensure_equals( a.size(), 1u );
    ensure( a.find( 1 ) != a.end() );

    a = a - wibble::Singleton<int>(1);
    ensure_equals( a.size(), 0u );
    ensure( a.find( 1 ) == a.end() );

    a |= wibble::Empty<int>();
    ensure_equals( a.size(), 0u );

    a |= wibble::Singleton<int>(1);
    ensure_equals( a.size(), 1u );
    ensure( a.find( 1 ) != a.end() );

    a -= wibble::Empty<int>();
    ensure_equals( a.size(), 1u );
    ensure( a.find( 1 ) != a.end() );

    a -= wibble::Singleton<int>(1);
    ensure_equals( a.size(), 0u );
    ensure( a.find( 1 ) == a.end() );
}

template<> template<>
void to::test< 4 >() {
    set< int > a, b;
    ensure( a <= b );
    ensure( b <= a );
}

template<> template<>
void to::test< 5 >() {
	// Catches a past bug of in-place intersection that would delete too many
	// items if the second set had items not present in the first
	set<int> a = mkset(2);
	set<int> b = mkset(1, 2);
	set<int> c = mkset(2);

	set<int> d = a & b;
	ensure(c == d);

	d = a;
	d &= b;
	ensure(c == d);
}



}

// vim:set ts=4 sw=4: