72 строки
2.9 KiB
C++
72 строки
2.9 KiB
C++
// Copyright 2016 The Emscripten Authors. All rights reserved.
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// Emscripten is available under two separate licenses, the MIT license and the
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// University of Illinois/NCSA Open Source License. Both these licenses can be
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// found in the LICENSE file.
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#include <string.h>
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#include <stdio.h>
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#include <math.h>
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#include <assert.h>
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#include <stdlib.h>
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#include <time.h>
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#include <emscripten/fetch.h>
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#define TEST_SIZE 512000
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int main()
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{
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// 1. Populate an IndexedDB file entry with custom data bytes in memory.
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emscripten_fetch_attr_t attr;
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emscripten_fetch_attr_init(&attr);
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strcpy(attr.requestMethod, "EM_IDB_STORE");
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attr.attributes = EMSCRIPTEN_FETCH_REPLACE | EMSCRIPTEN_FETCH_SYNCHRONOUS | EMSCRIPTEN_FETCH_PERSIST_FILE;
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uint8_t *data = (uint8_t*)malloc(TEST_SIZE);
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srand(time(NULL));
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for(int i = 0; i < TEST_SIZE; ++i)
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data[i] = (uint8_t)rand() | 0x40;
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attr.requestData = (char *)data;
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attr.requestDataSize = TEST_SIZE;
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emscripten_fetch_t *fetch = emscripten_fetch(&attr, "myfile.dat");
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assert(fetch->status == 200 && "Initial IndexedDB store of myfile.dat should have succeeded");
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emscripten_fetch_close(fetch);
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// 2. Make sure it is there.
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emscripten_fetch_attr_init(&attr);
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strcpy(attr.requestMethod, "GET");
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attr.attributes = EMSCRIPTEN_FETCH_NO_DOWNLOAD | EMSCRIPTEN_FETCH_SYNCHRONOUS | EMSCRIPTEN_FETCH_LOAD_TO_MEMORY;
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fetch = emscripten_fetch(&attr, "myfile.dat");
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assert(fetch->status == 200 && "emscripten_fetch from IndexedDB should have found the file");
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assert(fetch->numBytes == TEST_SIZE);
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assert(fetch->totalBytes == TEST_SIZE);
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assert(fetch->data != 0);
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assert(fetch->data != (char *)data); // We should really have obtained a new copy of the memory.
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assert(!memcmp((char *)data, fetch->data, TEST_SIZE));
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emscripten_fetch_close(fetch);
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// 3. Delete the file from IndexedDB by invoking an Emscripten-specific request "EM_IDB_DELETE".
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emscripten_fetch_attr_init(&attr);
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strcpy(attr.requestMethod, "EM_IDB_DELETE");
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attr.attributes = EMSCRIPTEN_FETCH_SYNCHRONOUS;
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fetch = emscripten_fetch(&attr, "myfile.dat");
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assert(fetch->status == 200 && "Deleting the file from IndexedDB should have succeeded");
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assert(fetch->numBytes == 0);
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assert(fetch->data == 0);
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emscripten_fetch_close(fetch);
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// 4. Now try to get the file again from IndexedDB, and ensure it is no longer available.
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emscripten_fetch_attr_init(&attr);
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strcpy(attr.requestMethod, "GET");
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attr.attributes = EMSCRIPTEN_FETCH_NO_DOWNLOAD | EMSCRIPTEN_FETCH_SYNCHRONOUS | EMSCRIPTEN_FETCH_LOAD_TO_MEMORY;
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fetch = emscripten_fetch(&attr, "myfile.dat");
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assert(fetch->status == 404 && "Attempting to GET the file from IndexedDB again should have failed after the file has been deleted");
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assert(fetch->numBytes == 0);
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assert(fetch->data == 0);
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emscripten_fetch_close(fetch);
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printf("Test succeeded!\n");
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#ifdef REPORT_RESULT
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REPORT_RESULT(0);
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#endif
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}
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