#include <assert.h>

#include <stdbool.h>

#include <string.h>

#include <stdio.h>

static void test_input() {

char line[11];

assert( getLine( line, 10 ) == 1 && "GetLine encountered an error" );

assert( strcmp( line, "echo test" ) == 0 && "Input should have been 'Test'" );

}

static void test_parse() {

char line[30];

char *words[10];

strcpy( line, "testing\t\t parse |\tfunction\t \t" );

assert( parse( 10, 10, line, words ) == 1 && "Parse seems to have failed" );

assert( strcmp( words[0], "testing" ) == 0 );

assert( strcmp( words[1], "parse" ) == 0 );

assert( strcmp( words[2], "|" ) == 0 );

assert( strcmp( words[3], "function" ) == 0 );

strcpy( line, "testingLongWord" );

assert( parse( 10, 10, line, words ) == 0 && "Should have failed because of long word." );

strcpy( line, "0 1 2 3 4 5 6 7 8 9 10" );

assert( parse( 10, 10, line, words ) == 0 && "Should have failed because of long word." );

}

static void test_getPath() {

char testCommand[30];

char path[50];

strcpy( testCommand, "echo" );

assert( getPath( testCommand, path ) == 0 && "Should have found the path for echo." );

assert( strcmp( path, "/bin/echo" ) == 0 );

strcpy( testCommand, "grep" );

assert( getPath( testCommand, path ) == 0 && "Should have found the path for grep." );

assert( strcmp( path, "/bin/grep" ) == 0 );

strcpy( testCommand, "vim" );

assert( getPath( testCommand, path ) == 0 && "Should have found the path for vim." );

assert( strcmp( path, "/usr/bin/vim" ) == 0 );

strcpy( testCommand, "./prog1_test" );

assert( getPath( testCommand, path ) == 0 && "Should have found the current program!" );

assert( strcmp( path, "./prog1_test" ) == 0 );

strcpy( testCommand, "badCommand" );

assert( getPath( testCommand, path ) == -1 && "Should not have found this nonsense." );

assert( strcmp( path, "" ) == 0 );

}

static void test_forkAndRun() {

int fd[2];

int fdNext[2];

int pid;

char *words[10];

fd[0] = 0;

fd[1] = 1;

pipe( fdNext );

swap( &fd[1], &fdNext[1] );

words[0] = "echo";

words[1] = "hello\n\n\n";

words[2] = NULL;

pid = forkAndRun( words, fd );

assert( pid != 0 && "Should have returned a PID." );

fd[0] = fdNext[0];

fd[1] = fdNext[1];

words[0] = "wc";

words[1] = "-l";

words[2] = NULL;

pid = forkAndRun( words, fd );

assert( pid != 0 && "Should have returned a PID." );

wait( &pid );

}

static void test_execute() {

char *words[10];

words[0] = "echo";

words[1] = "Hello World";

words[2] = NULL;

assert( execute( words ) == 0 && "Should have executed echo properly." );

words[0] = "grep";

words[1] = "int";

words[2] = "shell.c";

words[3] = "|";

words[4] = "wc";

words[5] = "-l";

words[6] = NULL;

assert( execute( words ) == 0 && "Should have executed echo properly." );

}

int main( void ) {

test_input();

test_parse();

test_getPath();

test_forkAndRun();

test_execute();

return 0;

}