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      1 /*
      2  * Copyright (C) 2019 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 #include <errno.h>
     18 #include <stdio.h>
     19 #include <string.h>
     20 
     21 /* The main purpose of this test is to ensure this C header compiles in C, so
     22  * that no C++ features inadvertently leak into the C ABI. */
     23 #include "art_api/dex_file_external.h"
     24 
     25 static const char gtest_output_arg[] = "--gtest_output=xml:";
     26 static const char gtest_output_xml[] = "\
     27 <?xml version=\"1.0\"?>\n\
     28 <testsuites tests=\"0\" failures=\"0\" disabled=\"0\" errors=\"0\" name=\"AllTests\">";
     29 
     30 /* Writes a dummy gtest xml report to the given path. */
     31 static int write_gtest_output_xml(char* gtest_output_path) {
     32   FILE* output_fd = fopen(gtest_output_path, "w");
     33   if (output_fd == NULL) {
     34     fprintf(stderr, "Failed to open %s: %s\n", gtest_output_path, strerror(errno));
     35     return 1;
     36   }
     37   if (fprintf(output_fd, gtest_output_xml) != sizeof(gtest_output_xml) - 1) {
     38     fprintf(stderr, "Failed to write %s: %s\n", gtest_output_path, strerror(errno));
     39     fclose(output_fd);
     40     return 1;
     41   }
     42   if (fclose(output_fd) != 0) {
     43     fprintf(stderr, "Failed to close %s: %s\n", gtest_output_path, strerror(errno));
     44     return 1;
     45   }
     46   return 0;
     47 }
     48 
     49 int main(int argc, char** argv) {
     50   if (argc >= 2 && strncmp(argv[1], gtest_output_arg, sizeof(gtest_output_arg) - 1) == 0) {
     51     /* The ART gtest framework expects all tests to understand --gtest_output. */
     52     return write_gtest_output_xml(argv[1] + sizeof(gtest_output_arg) - 1);
     53   }
     54   return 0;
     55 }
     56