// Copyright 2016 The Emscripten Authors. All rights reserved. // Emscripten is available under two separate licenses, the MIT license and the // University of Illinois/NCSA Open Source License. Both these licenses can be // found in the LICENSE file. #include #include #include #include #include int main() { // 1. Populate file to IndexedDB by a GET. emscripten_fetch_attr_t attr; emscripten_fetch_attr_init(&attr); strcpy(attr.requestMethod, "GET"); attr.attributes = EMSCRIPTEN_FETCH_REPLACE | EMSCRIPTEN_FETCH_SYNCHRONOUS | EMSCRIPTEN_FETCH_PERSIST_FILE; emscripten_fetch_t *fetch = emscripten_fetch(&attr, "gears.png"); assert(fetch->status == 200 && "Initial XHR GET of gears.png should have succeeded"); emscripten_fetch_close(fetch); // 2. Make sure it is there. emscripten_fetch_attr_init(&attr); strcpy(attr.requestMethod, "GET"); attr.attributes = EMSCRIPTEN_FETCH_NO_DOWNLOAD | EMSCRIPTEN_FETCH_SYNCHRONOUS | EMSCRIPTEN_FETCH_LOAD_TO_MEMORY; fetch = emscripten_fetch(&attr, "gears.png"); assert(fetch->status == 200 && "emscripten_fetch from IndexedDB should have found the file"); assert(fetch->numBytes > 0); assert(fetch->data != 0); emscripten_fetch_close(fetch); // 3. Delete the file from IndexedDB by invoking an Emscripten-specific request "EM_IDB_DELETE". emscripten_fetch_attr_init(&attr); strcpy(attr.requestMethod, "EM_IDB_DELETE"); attr.attributes = EMSCRIPTEN_FETCH_SYNCHRONOUS; fetch = emscripten_fetch(&attr, "gears.png"); assert(fetch->status == 200 && "Deleting the file from IndexedDB should have succeeded"); assert(fetch->numBytes == 0); assert(fetch->data == 0); emscripten_fetch_close(fetch); // 4. Now try to get the file again from IndexedDB, and ensure it is no longer available. emscripten_fetch_attr_init(&attr); strcpy(attr.requestMethod, "GET"); attr.attributes = EMSCRIPTEN_FETCH_NO_DOWNLOAD | EMSCRIPTEN_FETCH_SYNCHRONOUS | EMSCRIPTEN_FETCH_LOAD_TO_MEMORY; fetch = emscripten_fetch(&attr, "gears.png"); assert(fetch->status == 404 && "Attempting to GET the file from IndexedDB again should have failed after the file has been deleted"); assert(fetch->numBytes == 0); assert(fetch->data == 0); emscripten_fetch_close(fetch); printf("Test succeeded!\n"); return 0; }