esp-idf/components/vfs/test/test_vfs_paths.c

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// Copyright 2015-2017 Espressif Systems (Shanghai) PTE LTD
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#include <stdbool.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include <sys/fcntl.h>
#include <sys/dirent.h>
#include "esp_vfs.h"
#include "unity.h"
#include "esp_log.h"
/* Dummy VFS implementation to check if VFS is called or not with expected path
*/
typedef struct {
const char* match_path;
bool called;
} dummy_vfs_t;
static int dummy_open(void* ctx, const char * path, int flags, int mode)
{
dummy_vfs_t* dummy = (dummy_vfs_t*) ctx;
dummy->called = true;
if (strcmp(dummy->match_path, path) == 0) {
return 1;
}
errno = ENOENT;
return -1;
}
static int dummy_close(void* ctx, int fd)
{
dummy_vfs_t* dummy = (dummy_vfs_t*) ctx;
dummy->called = true;
if (fd == 1) {
return 0;
}
errno = EBADF;
return -1;
}
static DIR* dummy_opendir(void* ctx, const char* path)
{
dummy_vfs_t* dummy = (dummy_vfs_t*) ctx;
dummy->called = true;
if (strcmp(dummy->match_path, path) == 0) {
DIR* result = calloc(1, sizeof(DIR));
TEST_ASSERT_NOT_NULL(result);
return result;
}
errno = ENOENT;
return NULL;
}
static int dummy_closedir(void* ctx, DIR* pdir)
{
dummy_vfs_t* dummy = (dummy_vfs_t*) ctx;
dummy->called = true;
free(pdir);
return 0;
}
/* Initializer for this dummy VFS implementation
*/
#define DUMMY_VFS() { \
.flags = ESP_VFS_FLAG_CONTEXT_PTR, \
.open_p = dummy_open, \
.close_p = dummy_close, \
.opendir_p = dummy_opendir, \
.closedir_p = dummy_closedir \
}
/* Helper functions to test VFS behavior
*/
static void test_open(dummy_vfs_t* instance, const char* path,
bool should_be_called, bool should_be_opened, int line)
{
const int flags = O_CREAT | O_TRUNC | O_RDWR;
instance->called = false;
int fd = esp_vfs_open(__getreent(), path, flags, 0);
UNITY_TEST_ASSERT_EQUAL_INT(should_be_called, instance->called, line,
"should_be_called check failed");
if (should_be_called) {
if (should_be_opened) {
UNITY_TEST_ASSERT(fd >= 0, line, "should be opened");
} else {
UNITY_TEST_ASSERT(fd < 0, line, "should not be opened");
}
}
esp_vfs_close(__getreent(), fd);
}
static void test_opendir(dummy_vfs_t* instance, const char* path,
bool should_be_called, bool should_be_opened, int line)
{
instance->called = false;
DIR* dir = opendir(path);
UNITY_TEST_ASSERT_EQUAL_INT(should_be_called, instance->called, line,
"should_be_called check failed");
if (should_be_called) {
if (should_be_opened) {
UNITY_TEST_ASSERT(dir != NULL, line, "should be opened");
} else {
UNITY_TEST_ASSERT(dir == 0, line, "should not be opened");
}
}
if (dir) {
closedir(dir);
}
}
/* Helper macros which forward line number to assertion macros inside test_open
* and test_opendir
*/
#define test_opened(instance, path) test_open(instance, path, true, true, __LINE__)
#define test_not_opened(instance, path) test_open(instance, path, true, false, __LINE__)
#define test_not_called(instance, path) test_open(instance, path, false, false, __LINE__)
#define test_dir_opened(instance, path) test_opendir(instance, path, true, true, __LINE__)
#define test_dir_not_opened(instance, path) test_opendir(instance, path, true, false, __LINE__)
#define test_dir_not_called(instance, path) test_opendir(instance, path, false, false, __LINE__)
TEST_CASE("vfs parses paths correctly", "[vfs]")
{
dummy_vfs_t inst_foo = {
.match_path = "",
.called = false
};
esp_vfs_t desc_foo = DUMMY_VFS();
TEST_ESP_OK( esp_vfs_register("/foo", &desc_foo, &inst_foo) );
dummy_vfs_t inst_foo1 = {
.match_path = "",
.called = false
};
esp_vfs_t desc_foo1 = DUMMY_VFS();
TEST_ESP_OK( esp_vfs_register("/foo1", &desc_foo1, &inst_foo1) );
inst_foo.match_path = "/file";
test_opened(&inst_foo, "/foo/file");
test_not_opened(&inst_foo, "/foo/file1");
test_not_called(&inst_foo, "/foo1/file");
test_not_called(&inst_foo, "/foo1");
test_not_opened(&inst_foo, "/foo");
inst_foo.match_path = "/junk";
test_dir_opened(&inst_foo, "/foo/junk");
inst_foo.match_path = "/";
test_dir_opened(&inst_foo, "/foo/");
test_dir_opened(&inst_foo, "/foo");
test_dir_not_called(&inst_foo1, "/foo");
test_dir_not_opened(&inst_foo, "/foo/1");
test_dir_not_called(&inst_foo, "/foo1");
inst_foo1.match_path = "/file1";
test_not_called(&inst_foo1, "/foo/file1");
test_opened(&inst_foo1, "/foo1/file1");
test_not_opened(&inst_foo1, "/foo1/file");
// Test nested VFS entries
dummy_vfs_t inst_foobar = {
.match_path = "",
.called = false
};
esp_vfs_t desc_foobar = DUMMY_VFS();
TEST_ESP_OK( esp_vfs_register("/foo/bar", &desc_foobar, &inst_foobar) );
dummy_vfs_t inst_toplevel = {
.match_path = "",
.called = false
};
esp_vfs_t desc_toplevel = DUMMY_VFS();
TEST_ESP_OK( esp_vfs_register("", &desc_toplevel, &inst_toplevel) );
inst_foo.match_path = "/bar/file";
inst_foobar.match_path = "/file";
test_not_called(&inst_foo, "/foo/bar/file");
test_opened(&inst_foobar, "/foo/bar/file");
test_dir_not_called(&inst_foo, "/foo/bar/file");
test_dir_opened(&inst_foobar, "/foo/bar/file");
inst_toplevel.match_path = "/tmp/foo";
test_opened(&inst_toplevel, "/tmp/foo");
inst_toplevel.match_path = "foo";
test_opened(&inst_toplevel, "foo");
TEST_ESP_OK( esp_vfs_unregister("/foo") );
TEST_ESP_OK( esp_vfs_unregister("/foo1") );
TEST_ESP_OK( esp_vfs_unregister("/foo/bar") );
TEST_ESP_OK( esp_vfs_unregister("") );
}
TEST_CASE("vfs unregisters correct nested mount point", "[vfs]")
{
dummy_vfs_t inst_foobar = {
.match_path = "/file",
.called = false
};
esp_vfs_t desc_foobar = DUMMY_VFS();
TEST_ESP_OK( esp_vfs_register("/foo/bar", &desc_foobar, &inst_foobar) );
dummy_vfs_t inst_foo = {
.match_path = "/bar/file",
.called = false
};
esp_vfs_t desc_foo = DUMMY_VFS();
TEST_ESP_OK( esp_vfs_register("/foo", &desc_foo, &inst_foo) );
/* basic operation */
test_opened(&inst_foobar, "/foo/bar/file");
test_not_called(&inst_foo, "/foo/bar/file");
/* this should not match anything */
TEST_ESP_ERR(ESP_ERR_INVALID_STATE, esp_vfs_unregister("/foo/b"));
/* unregister "/foo" and check that we haven't unregistered "/foo/bar" */
TEST_ESP_OK( esp_vfs_unregister("/foo") );
test_not_called(&inst_foo, "/foo/bar/file");
test_opened(&inst_foobar, "/foo/bar/file");
/* repeat the above, with the reverse order of registration */
TEST_ESP_OK( esp_vfs_unregister("/foo/bar") );
TEST_ESP_OK( esp_vfs_register("/foo", &desc_foo, &inst_foo) );
TEST_ESP_OK( esp_vfs_register("/foo/bar", &desc_foobar, &inst_foobar) );
test_opened(&inst_foobar, "/foo/bar/file");
test_not_called(&inst_foo, "/foo/bar/file");
TEST_ESP_OK( esp_vfs_unregister("/foo") );
test_not_called(&inst_foo, "/foo/bar/file");
test_opened(&inst_foobar, "/foo/bar/file");
TEST_ESP_OK( esp_vfs_unregister("/foo/bar") );
}
void test_vfs_register(const char* prefix, bool expect_success, int line)
{
dummy_vfs_t inst;
esp_vfs_t desc = DUMMY_VFS();
esp_err_t err = esp_vfs_register(prefix, &desc, &inst);
if (expect_success) {
UNITY_TEST_ASSERT_EQUAL_INT(ESP_OK, err, line, "esp_vfs_register should succeed");
} else {
UNITY_TEST_ASSERT_EQUAL_INT(ESP_ERR_INVALID_ARG,
err, line, "esp_vfs_register should fail");
}
if (err == ESP_OK) {
TEST_ESP_OK( esp_vfs_unregister(prefix) );
}
}
#define test_register_ok(prefix) test_vfs_register(prefix, true, __LINE__)
#define test_register_fail(prefix) test_vfs_register(prefix, false, __LINE__)
TEST_CASE("vfs checks mount point path", "[vfs]")
{
test_register_ok("");
test_register_fail("/");
test_register_fail("a");
test_register_fail("aa");
test_register_fail("aaa");
test_register_ok("/a");
test_register_ok("/aa");
test_register_ok("/aaa/bbb");
test_register_fail("/aaa/");
test_register_fail("/aaa/bbb/");
test_register_ok("/23456789012345");
test_register_fail("/234567890123456");
}