зеркало из https://github.com/mozilla/gecko-dev.git
99 строки
3.2 KiB
JavaScript
99 строки
3.2 KiB
JavaScript
/* Any copyright is dedicated to the Public Domain.
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* http://creativecommons.org/publicdomain/zero/1.0/ */
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"use strict";
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Components.utils.import("resource://gre/modules/osfile.jsm");
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function run_test() {
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do_test_pending();
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run_next_test();
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}
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add_task(function* test_compress_lz4() {
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let path = OS.Path.join(OS.Constants.Path.tmpDir, "compression.lz");
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let length = 1024;
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let array = new Uint8Array(length);
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for (let i = 0; i < array.byteLength; ++i) {
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array[i] = i;
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}
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let arrayAsString = Array.prototype.join.call(array);
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do_print("Writing data with lz4 compression");
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let bytes = yield OS.File.writeAtomic(path, array, { compression: "lz4" });
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do_print("Compressed " + length + " bytes into " + bytes);
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do_print("Reading back with lz4 decompression");
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let decompressed = yield OS.File.read(path, { compression: "lz4" });
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do_print("Decompressed into " + decompressed.byteLength + " bytes");
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do_check_eq(arrayAsString, Array.prototype.join.call(decompressed));
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});
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add_task(function* test_uncompressed() {
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do_print("Writing data without compression");
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let path = OS.Path.join(OS.Constants.Path.tmpDir, "no_compression.tmp");
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let array = new Uint8Array(1024);
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for (let i = 0; i < array.byteLength; ++i) {
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array[i] = i;
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}
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let bytes = yield OS.File.writeAtomic(path, array); // No compression
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let exn;
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// Force decompression, reading should fail
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try {
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yield OS.File.read(path, { compression: "lz4" });
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} catch (ex) {
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exn = ex;
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}
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do_check_true(!!exn);
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// Check the exception message (and that it contains the file name)
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do_check_true(exn.message.indexOf(`Invalid header (no magic number) - Data: ${ path }`) != -1);
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});
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add_task(function* test_no_header() {
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let path = OS.Path.join(OS.Constants.Path.tmpDir, "no_header.tmp");
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let array = new Uint8Array(8).fill(0,0); // Small array with no header
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do_print("Writing data with no header");
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let bytes = yield OS.File.writeAtomic(path, array); // No compression
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let exn;
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// Force decompression, reading should fail
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try {
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yield OS.File.read(path, { compression: "lz4" });
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} catch (ex) {
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exn = ex;
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}
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do_check_true(!!exn);
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// Check the exception message (and that it contains the file name)
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do_check_true(exn.message.indexOf(`Buffer is too short (no header) - Data: ${ path }`) != -1);
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});
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add_task(function* test_invalid_content() {
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let path = OS.Path.join(OS.Constants.Path.tmpDir, "invalid_content.tmp");
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let arr1 = new Uint8Array([109, 111, 122, 76, 122, 52, 48, 0]);
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let arr2 = new Uint8Array(248).fill(1,0);
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let array = new Uint8Array(arr1.length + arr2.length);
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array.set(arr1);
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array.set(arr2, arr1.length);
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do_print("Writing invalid data (with a valid header and only ones after that)");
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let bytes = yield OS.File.writeAtomic(path, array); // No compression
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let exn;
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// Force decompression, reading should fail
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try {
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yield OS.File.read(path, { compression: "lz4" });
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} catch (ex) {
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exn = ex;
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}
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do_check_true(!!exn);
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// Check the exception message (and that it contains the file name)
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do_check_true(exn.message.indexOf(`Invalid content: Decompression stopped at 0 - Data: ${ path }`) != -1);
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});
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add_task(function() {
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do_test_finished();
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});
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