202 lines
4.6 KiB
C++
202 lines
4.6 KiB
C++
// Tests for the -*- C++ -*- string classes.
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// Copyright (C) 1994 Free Software Foundation
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// This file is part of the GNU ANSI C++ Library. This library is free
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// software; you can redistribute it and/or modify it under the terms of
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// the GNU General Public License as published by the Free Software
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// Foundation; either version 2, or (at your option) any later version.
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// This library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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// You should have received a copy of the GNU General Public License
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// along with this library; see the file COPYING. If not, write to the Free
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// Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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#include <string>
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#include <algorithm>
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#include <iostream.h>
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#include <stdlib.h>
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#include <assert.h>
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string X = "Hello";
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string Y = "world";
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string N = "123";
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string c;
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const char* s = ",";
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void decltest()
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{
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string x;
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cout << "an empty string:" << x << "\n";
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assert(x == "");
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string y = "Hello";
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cout << "A string initialized to Hello:" << y << "\n";
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assert(y == "Hello");
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if (y[y.length()-1] == 'o')
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y = y + '\n';
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assert(y == "Hello\n");
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y = "Hello";
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string a = y;
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cout << "A string initialized to previous string:" << a << "\n";
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assert(a == "Hello");
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assert(a == y);
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string b (a, 1, 2);
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cout << "A string initialized to (previous string, 1, 2):" << b << "\n";
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assert(b == "el");
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char ch = '@';
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string z (1, ch);
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cout << "A string initialized to @:" << z << "\n";
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assert (z == "@");
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string n ("20");
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cout << "A string initialized to 20:" << n << "\n";
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assert(n == "20");
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int i = atoi(n.c_str ());
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double f = atof(n.c_str ());
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cout << "n = " << n << " atoi(n) = " << i << " atof(n) = " << f << "\n";
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assert(i == 20);
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assert(f == 20);
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int ar[] = { 'H', 'e', 'l', 'l', 'o' };
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string is (ar, ar+sizeof(ar)/sizeof(ar[0]));
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cout << "is = " << is << endl;
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assert (is == "Hello");
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}
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void cattest()
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{
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string x = X;
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string y = Y;
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string z = x + y;
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cout << "z = x + y = " << z << "\n";
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assert(z == "Helloworld");
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x += y;
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cout << "x += y; x = " << x << "\n";
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assert(x == "Helloworld");
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y = Y;
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x = X;
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y.insert (0, x);
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cout << "y.insert (0, x); y = " << y << "\n";
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assert(y == "Helloworld");
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y = Y;
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x = X;
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x = x + y + x;
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cout << "x = x + y + x; x = " << x << "\n";
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assert(x == "HelloworldHello");
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y = Y;
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x = X;
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x = y + x + x;
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cout << "x = y + x + x; x = " << x << "\n";
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assert(x == "worldHelloHello");
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x = X;
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y = Y;
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z = x + s + ' ' + y.substr (y.find ('w'), 1) + y.substr (y.find ('w') + 1) + ".";
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cout << "z = x + s + + y.substr (y.find (w), 1) + y.substr (y.find (w) + 1) + . = " << z << "\n";
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assert(z == "Hello, world.");
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}
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void comparetest()
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{
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string x = X;
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string y = Y;
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string n = N;
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string z = x + y;
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assert(x != y);
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assert(x == "Hello");
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assert(x != z.substr (0, 4));
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assert(x.compare (y) < 0);
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assert(x.compare (z.substr (0, 6)) < 0);
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assert(x.find ("lo") == 3);
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assert(x.find ("l", 2) == 2);
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assert(x.rfind ("l") == 3);
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}
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void substrtest()
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{
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string x = X;
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char ch = x[0];
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cout << "ch = x[0] = " << ch << "\n";
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assert(ch == 'H');
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string z = x.substr (2, 3);
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cout << "z = x.substr (2, 3) = " << z << "\n";
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assert(z == "llo");
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x.replace (2, 2, "r");
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cout << "x.replace (2, 2, r); x = " << x << "\n";
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assert(x == "Hero");
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x = X;
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x.replace (0, 1, 'j');
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cout << "x.replace (0, 1, 'j'); x = " << x << "\n";
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assert(x == "jello");
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int ar[] = { 'H', 'e', 'l', 'l', 'o' };
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x.replace (find (x.begin (), x.end (), 'l'),
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find (x.rbegin (), x.rend (), 'l').base (),
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ar, ar+sizeof(ar)/sizeof(ar[0]));
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cout << "x = " << x << endl;
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assert (x == "jeHelloo");
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}
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void iotest()
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{
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string z;
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cout << "enter a word:";
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cin >> z;
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cout << "word =" << z << " ";
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cout << "length = " << z.length() << "\n";
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}
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void identitytest(string a, string b)
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{
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string x = a;
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string y = b;
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x += b;
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y.insert (0, a);
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assert((a + b) == x);
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assert((a + b) == y);
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assert(x == y);
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assert((a + b + a) == (a + (b + a)));
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x.erase (x.rfind (b));
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assert(x == a);
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y.replace (0, y.rfind (b), b);
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assert(y == (b + b));
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y.replace (y.find (b), b.length (), a);
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assert(y == (a + b));
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}
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int main()
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{
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decltest();
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cattest();
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comparetest();
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substrtest();
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identitytest(X, X);
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identitytest(X, Y);
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identitytest(X+Y+N+X+Y+N, "A string that will be used in identitytest but is otherwise just another useless string.");
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iotest();
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cout << "\nEnd of test\n";
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return 0;
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}
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