/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-â
âvi: set net ft=c ts=2 sts=2 sw=2 fenc=utf-8                                :viâ
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â Copyright 2020 Justine Alexandra Roberts Tunney                              â
â                                                                              â
â Permission to use, copy, modify, and/or distribute this software for         â
â any purpose with or without fee is hereby granted, provided that the         â
â above copyright notice and this permission notice appear in all copies.      â
â                                                                              â
â THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL                â
â WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED                â
â WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE             â
â AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL         â
â DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR        â
â PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER               â
â TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR             â
â PERFORMANCE OF THIS SOFTWARE.                                                â
ââââââââââââââââââââââââââââââââââââââââââââââââââââââââââââââââââââââââââââââ*/
#include "libc/calls/calls.h"
#include "libc/calls/struct/dirent.h"
#include "libc/calls/struct/stat.h"
#include "libc/dce.h"
#include "libc/errno.h"
#include "libc/fmt/fmt.h"
#include "libc/intrin/safemacros.internal.h"
#include "libc/log/check.h"
#include "libc/mem/gc.internal.h"
#include "libc/mem/mem.h"
#include "libc/runtime/internal.h"
#include "libc/runtime/runtime.h"
#include "libc/stdio/stdio.h"
#include "libc/str/str.h"
#include "libc/sysv/consts/dt.h"
#include "libc/testlib/testlib.h"
#include "libc/x/x.h"

uint64_t i;
char *oldpath;
char tmp[PATH_MAX];
char pathbuf[PATH_MAX];
char testlib_enable_tmp_setup_teardown;

void SetUpOnce(void) {
  ASSERT_SYS(0, 0, pledge("stdio rpath wpath cpath fattr", 0));
}

void SetUp(void) {
  static int x;
  mkdir("bin", 0755);
  mkdir("home", 0755);
  oldpath = strdup(nulltoempty(getenv("PATH")));
  CHECK_NE(-1, setenv("PATH", "bin", true));
}

void TearDown(void) {
  CHECK_NE(-1, setenv("PATH", oldpath, true));
  free(oldpath);
}

TEST(commandv, testPathSearch) {
  EXPECT_NE(-1, touch("bin/sh", 0755));
  if (IsWindows()) {
    EXPECT_EQ(NULL, commandv("sh", pathbuf, sizeof(pathbuf)));
    EXPECT_EQ(errno, ENOENT);
  } else {
    EXPECT_STREQ("bin/sh", commandv("sh", pathbuf, sizeof(pathbuf)));
  }
}

TEST(commandv, testPathSearch_appendsComExtension) {
  EXPECT_NE(-1, touch("bin/sh.com", 0755));
  EXPECT_STREQ("bin/sh.com", commandv("sh", pathbuf, sizeof(pathbuf)));
}

TEST(commandv, testSlashes_wontSearchPath_butChecksAccess) {
  EXPECT_NE(-1, touch("home/sh.com", 0755));
  i = __syscount;
  EXPECT_STREQ("home/sh.com",
               commandv("home/sh.com", pathbuf, sizeof(pathbuf)));
#ifdef __x86_64__
  if (!IsWindows()) EXPECT_EQ(i + 2, __syscount);
#endif
}

TEST(commandv, testSlashes_wontSearchPath_butStillAppendsComExtension) {
  EXPECT_NE(-1, touch("home/sh.com", 0755));
  i = __syscount;
  EXPECT_STREQ("home/sh.com", commandv("home/sh", pathbuf, sizeof(pathbuf)));
#ifdef __x86_64__
  if (!IsWindows()) EXPECT_EQ(i + 3, __syscount);
#endif
}

TEST(commandv, testSameDir_doesntHappenByDefaultUnlessItsWindows) {
  EXPECT_NE(-1, touch("bog.com", 0755));
  if (IsWindows()) {
    EXPECT_STREQ("./bog.com", commandv("bog.com", pathbuf, sizeof(pathbuf)));
  } else {
    EXPECT_EQ(NULL, commandv("bog.com", pathbuf, sizeof(pathbuf)));
    EXPECT_EQ(errno, ENOENT);
  }
}

TEST(commandv, testSameDir_willHappenWithColonBlank) {
  CHECK_NE(-1, setenv("PATH", "bin:", true));
  EXPECT_NE(-1, touch("bog.com", 0755));
  if (IsWindows()) {
    EXPECT_STREQ("./bog.com", commandv("bog.com", pathbuf, sizeof(pathbuf)));
  } else {
    EXPECT_STREQ("bog.com", commandv("bog.com", pathbuf, sizeof(pathbuf)));
  }
}

TEST(commandv, testSameDir_willHappenWithColonBlank2) {
  CHECK_NE(-1, setenv("PATH", ":bin", true));
  EXPECT_NE(-1, touch("bog.com", 0755));
  if (IsWindows()) {
    EXPECT_STREQ("./bog.com", commandv("bog.com", pathbuf, sizeof(pathbuf)));
  } else {
    EXPECT_STREQ("bog.com", commandv("bog.com", pathbuf, sizeof(pathbuf)));
  }
}

TEST(commandv, test_DirPaths_wontConsiderDirectoriesExecutable) {
  CHECK_NE(-1, setenv("PATH", ":bin", true));
  EXPECT_NE(-1, mkdir("Cursors", 0755));
  EXPECT_EQ(NULL, commandv("Cursors", pathbuf, sizeof(pathbuf)));
  if (IsWindows()) {
    EXPECT_EQ(errno, ENOENT);
  } else {
    EXPECT_EQ(errno, EACCES);
  }
}

TEST(commandv, test_DirPaths_wontConsiderDirectoriesExecutable2) {
  CHECK_NE(-1, setenv("PATH", ":bin", true));
  EXPECT_NE(-1, mkdir("this_is_a_directory.com", 0755));
  EXPECT_EQ(NULL,
            commandv("this_is_a_directory.com", pathbuf, sizeof(pathbuf)));
  EXPECT_EQ(errno, EACCES);
}
