Arquivos de base para o POST em: http://www.sysincloud.it/testes-unitarios-na-linguagem-c

README

Arquivos usados no texto em:

    http://www.sysincloud.it/testes-unitarios-na-linguagem-c 

LICENSE

The MIT License (MIT)

Copyright (c) 2016 Paulo Henrique Rodrigues Pinheiro <paulo@sysincloud.it>

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.

Makefile

# The MIT License (MIT)
#
# Copyright (c) 2016 Paulo Henrique Rodrigues Pinheiro <paulo@sysincloud.it>
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in all
# copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
# SOFTWARE.


CC=cc
FLAGS=-Wall -ansi -pedantic

natural.o: natural.c
	$(CC) -c $^ $(FLAGS) -o $@

teste: teste.c natural.o
	$(CC) $^ $(FLAGS) -o $@

.PHONY: all clean

all: teste
	./teste

clean:
	rm -f natural.o teste

minunit.h

 #ifndef __minunit_h__
 #define __minunit_h__
 
 /*
 You may use the code in this tech note for any purpose, 
 with the understanding that it comes with NO WARRANTY. 
 
 From http://www.jera.com/techinfo/jtns/jtn002.html
 */
 
 #define mu_assert(message, test) do { if (!(test)) return message; } while (0)
 #define mu_run_test(test) do { char *message = test(); tests_run++; \
                                if (message) return message; } while (0)
 extern int tests_run;
 
 #endif

natural.c

/*
 * Copyright (c) 2016 Paulo Henrique Rodrigues Pinheiro <paulo@sysincloud.it>
 * 
 * Permission is hereby granted, free of charge, to any person obtaining a copy of
 * this software and associated documentation files (the "Software"), to deal in
 * the Software without restriction, including without limitation the rights to
 * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
 * of the Software, and to permit persons to whom the Software is furnished to do
 * so, subject to the following conditions:
 * 
 * The above copyright notice and this permission notice shall be included in all
 * copies or substantial portions of the Software.
 * 
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */

#include "natural.h"

/* usaremos -1 como indicador de erro */


int N_subtracao(int a, int b) {
    /* Só queremos números naturais como parâmetro. */
    if(a<0 || b<0) {
        return -1;
    }

    /* Só podemos retornar um número natural como resultado. */
    if(a<b) {
        return -1;
    }

    /* sem medo */
    return a-b;
}

natural.h

/*
 * Copyright (c) 2016 Paulo Henrique Rodrigues Pinheiro <paulo@sysincloud.it>
 * 
 * Permission is hereby granted, free of charge, to any person obtaining a copy of
 * this software and associated documentation files (the "Software"), to deal in
 * the Software without restriction, including without limitation the rights to
 * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
 * of the Software, and to permit persons to whom the Software is furnished to do
 * so, subject to the following conditions:
 * 
 * The above copyright notice and this permission notice shall be included in all
 * copies or substantial portions of the Software.
 * 
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */


#ifndef __N_H__
#define __N_H__


/* protótipo da função */
int N_subtracao(int, int);

#endif

teste.c

/*
 * Copyright (c) 2016 Paulo Henrique Rodrigues Pinheiro <paulo@sysincloud.it>
 * 
 * Permission is hereby granted, free of charge, to any person obtaining a copy of
 * this software and associated documentation files (the "Software"), to deal in
 * the Software without restriction, including without limitation the rights to
 * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
 * of the Software, and to permit persons to whom the Software is furnished to do
 * so, subject to the following conditions:
 * 
 * The above copyright notice and this permission notice shall be included in all
 * copies or substantial portions of the Software.
 * 
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */


#include <stdio.h>   /* puts/printf */
#include <stdlib.h>  /* EXIT_* */

#include "minunit.h"
#include "natural.h"

/* declarado no cabeçalho minunit e definido aqui */
int tests_run = 0;

static char *testa_parametros(void) {
    puts("=> testa_parametros") ;

    mu_assert("Primeiro parâmetro inválido.", -1==N_subtracao( -1,  10));
    mu_assert("Segundo parâmetro inválido.",  -1==N_subtracao( 10,  -1));
    mu_assert("Os dois parâmetros inválidos", -1==N_subtracao(-10, -20));

    return 0;
}

static char *testa_resultado_nao_N(void) {
    puts("=> testa_resultado_nao_N");

    mu_assert("Resultado negativo.", -1==N_subtracao(10, 20));

    return 0;
}

static char *testa_resultados_validos(void) {
    puts("=> testa_resultados_validos");

    mu_assert("0-0",    0==N_subtracao( 0,  0));
    mu_assert("10-0",  10==N_subtracao(10,  0));
    mu_assert("10-10",  0==N_subtracao(10, 10));
    mu_assert("20-10", 10==N_subtracao(20, 10));

    return 0;
}

static char *testes(void) {
    mu_run_test(testa_parametros);
    mu_run_test(testa_resultado_nao_N);
    mu_run_test(testa_resultados_validos);

    return 0;
}

int main(void) {
    char *saida;

    saida = testes();

    if(0!=saida) {
        puts(saida);
        return EXIT_FAILURE;
    }

    puts("TESTES EXECUTADOS COM SUCESSO");
    printf("Testes executados: %d\n", tests_run);

    return EXIT_SUCCESS;
}