test-funcs.c

// A test driver program to automate some testing of the shell
#include "c_shell.h"
#include <assert.h>

int main(){
    // Test create_argv
    char **argv = NULL;
    char *toks[]  = {"echo", "Hi", "I", "am", "a", "long", "command", NULL};
    int n = create_argv(&argv, toks);
    assert(n == 7);
    for(int i = 0; *(argv + i) != NULL; i++){
        assert(strcmp(argv[i], toks[i]) == 0);
    }
    // test with redirection
    char *toks_2[] = {"echo", "Hello", ">", "test.txt", NULL};
    n = create_argv(&argv, toks_2);
    assert(n == 2);  // argv is only up to redirection
    for(int i = 0; *(argv + i) != NULL; i++){
        assert(strcmp(argv[i], toks_2[i]) == 0);
    }
    // test with piping
    char *toks_3[] = {"cat", "test.txt", "|", "grep", "Hello"};
    n = create_argv(&argv, toks_3);
    assert(n == 2);
    for(int i = 0; *(argv + i) != NULL; i++){
        assert(strcmp(argv[i], toks_3[i]) == 0);
    }
    puts("'create_argv' pass");

    // Test is_builtin
    assert(is_builtin("cd") == CD);
    assert(is_builtin("dir") == B_DIR);
    assert(is_builtin("environ") == ENV);
    assert(is_builtin("clr") == CLR);
    assert(is_builtin("echo") == ECHO);
    assert(is_builtin("help") == HELP);
    assert(is_builtin("pause") == PAUSE);
    assert(is_builtin("exit") == EXIT);

    puts("'is_builtin' pass");

    // Test fullpath
    char buffer[256];
    char *pwd = "/home";
    char *filename = "test.txt";
    fullpath(buffer, pwd, filename, 256);
    assert(strcmp(buffer, "/home/test.txt") == 0);

    puts("'fullpath' pass");

    puts("");
    // Test parse
    char cmd_string[100] = "echo Hello, World | grep [A-Z] | cat > output.txt & ls -l | grep m";
    printf("Testing 'parse' with:\n%s\n", cmd_string);
    queue *cmd_queue = init_queue();
    n = parse(cmd_string, cmd_queue);
    assert(n == 5); // check that the right number of commands were parsed
    print_queue(cmd_queue); // visually verify that the data structure is created properly
    return 0;
}