OVMS3-idf/components/expat/test/test_expat.c

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// Copyright 2018 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 <expat.h>
#include <string.h>
#include "unity.h"
typedef struct {
int depth;
char output[512];
int output_off;
} user_data_t;
static void insert_space(user_data_t *user_data)
{
const char align_str[] = " ";
TEST_ASSERT(sizeof(user_data->output) >= user_data->output_off);
user_data->output[user_data->output_off++] = '\n';
for (int i = 0; i < user_data->depth; i++) {
for (int j = 0; j < strlen(align_str); ++j) {
TEST_ASSERT(sizeof(user_data->output) >= user_data->output_off);
user_data->output[user_data->output_off++] = align_str[j];
}
}
}
static void XMLCALL start_element(void *userData, const XML_Char *name, const XML_Char **atts)
{
user_data_t *user_data = (user_data_t *) userData;
insert_space(user_data);
const int ret = snprintf(user_data->output + user_data->output_off,
sizeof(user_data->output) - user_data->output_off,
"<%s>", name);
TEST_ASSERT_EQUAL(strlen(name) + 2, ret); // 2 are the tag characters: "<>"
user_data->output_off += ret;
++user_data->depth;
}
static void XMLCALL end_element(void *userData, const XML_Char *name)
{
user_data_t *user_data = (user_data_t *) userData;
--user_data->depth;
insert_space(user_data);
int ret = snprintf(user_data->output + user_data->output_off, sizeof(user_data->output) - user_data->output_off,
"</%s>", name);
TEST_ASSERT_EQUAL(strlen(name) + 3, ret); // 3 are the tag characters: "</>"
user_data->output_off += ret;
}
static void data_handler(void *userData, const XML_Char *s, int len)
{
user_data_t *user_data = (user_data_t *) userData;
insert_space(user_data);
// s is not zero-terminated
char tmp_str[len+1];
strlcpy(tmp_str, s, len+1);
int ret = snprintf(user_data->output + user_data->output_off, sizeof(user_data->output) - user_data->output_off,
"%s", tmp_str);
TEST_ASSERT_EQUAL(strlen(tmp_str), ret);
user_data->output_off += ret;
}
TEST_CASE("Expat parses XML", "[expat]")
{
const char test_in[] = "<html><title>Page title</title><body><h>header</h><ol><li>A</li>"\
"<li>B</li><li>C</li></ol></body></html>";
const char test_expected[] = "\n"\
"<html>\n"\
" <title>\n"\
" Page title\n"\
" </title>\n"\
" <body>\n"\
" <h>\n"\
" header\n"\
" </h>\n"\
" <ol>\n"\
" <li>\n"\
" A\n"\
" </li>\n"\
" <li>\n"\
" B\n"\
" </li>\n"\
" <li>\n"\
" C\n"\
" </li>\n"\
" </ol>\n"\
" </body>\n"\
"</html>";
user_data_t user_data = {
.depth = 0,
.output = { '\0' },
.output_off = 0
};
XML_Parser parser = XML_ParserCreate(NULL);
XML_SetUserData(parser, &user_data);
XML_SetElementHandler(parser, start_element, end_element);
XML_SetCharacterDataHandler(parser, data_handler);
TEST_ASSERT_NOT_EQUAL(XML_STATUS_ERROR, XML_Parse(parser, test_in, strlen(test_in), 1));
XML_ParserFree(parser);
TEST_ASSERT_EQUAL(0, user_data.depth); // all closing tags have been found
TEST_ASSERT_EQUAL(strlen(test_expected), strlen(user_data.output));
TEST_ASSERT_EQUAL_STRING(test_expected, user_data.output);
}