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513 lines
14 KiB
JavaScript
513 lines
14 KiB
JavaScript
/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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// Test nsIPartialFileInputStream
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// NOTE! These tests often use do_check_true(a == b) rather than
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// do_check_eq(a, b) to avoid outputting characters which confuse
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// the console
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var CC = Components.Constructor;
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const BinaryInputStream = CC("@mozilla.org/binaryinputstream;1",
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"nsIBinaryInputStream",
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"setInputStream");
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const PR_RDONLY = 0x1; // see prio.h
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// We need the profile directory so the test harness will clean up our test
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// files.
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do_get_profile();
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var binary_test_file_name = "data/image.png";
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var text_test_file_name = "test_file_partial_inputstream.js";
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// This is a global variable since if it's passed as an argument stack traces
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// become unreadable.
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var test_file_data;
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function run_test()
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{
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// Binary tests
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let binaryFile = do_get_file(binary_test_file_name);
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let size = binaryFile.fileSize;
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// Want to make sure we're working with a large enough file
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dump("**** binary file size is: " + size + " ****\n");
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do_check_true(size > 65536);
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let binaryStream = new BinaryInputStream(new_file_input_stream(binaryFile));
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test_file_data = "";
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while ((avail = binaryStream.available()) > 0) {
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test_file_data += binaryStream.readBytes(avail);
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}
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do_check_eq(test_file_data.length, size);
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binaryStream.close();
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test_binary_portion(0, 10);
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test_binary_portion(0, 20000);
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test_binary_portion(0, size);
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test_binary_portion(20000, 10);
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test_binary_portion(20000, 20000);
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test_binary_portion(20000, size-20000);
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test_binary_portion(size-10, 10);
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test_binary_portion(size-20000, 20000);
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test_binary_portion(0, 0);
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test_binary_portion(20000, 0);
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test_binary_portion(size-1, 1);
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// Text-file tests
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let textFile = do_get_file(binary_test_file_name);
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size = textFile.fileSize;
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// Want to make sure we're working with a large enough file
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dump("**** text file size is: " + size + " ****\n");
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do_check_true(size > 7000);
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let textStream = new BinaryInputStream(new_file_input_stream(textFile));
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test_file_data = "";
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while ((avail = textStream.available()) > 0)
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test_file_data += textStream.readBytes(avail);
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do_check_eq(test_file_data.length, size);
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textStream.close();
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test_text_portion(0, 100);
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test_text_portion(0, size);
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test_text_portion(5000, 1000);
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test_text_portion(size-10, 10);
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test_text_portion(size-5000, 5000);
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test_text_portion(10, 0);
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test_text_portion(size-1, 1);
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// Test auto-closing files
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// Test behavior when *not* autoclosing
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let tempFile = create_temp_file("01234567890123456789");
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let tempInputStream = new_partial_file_input_stream(tempFile, 5, 10);
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tempInputStream.QueryInterface(Ci.nsILineInputStream);
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do_check_eq(read_line_stream(tempInputStream)[1], "5678901234");
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try {
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// This fails on some platforms
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tempFile.remove(false);
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}
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catch (ex) {
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}
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tempInputStream.QueryInterface(Ci.nsISeekableStream);
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tempInputStream.seek(SET, 1);
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do_check_eq(read_line_stream(tempInputStream)[1], "678901234");
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// Test removing the file when autoclosing
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tempFile = create_temp_file("01234567890123456789");
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tempInputStream = new_partial_file_input_stream(tempFile, 5, 10,
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Ci.nsIFileInputStream.CLOSE_ON_EOF |
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Ci.nsIFileInputStream.REOPEN_ON_REWIND);
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tempInputStream.QueryInterface(Ci.nsILineInputStream);
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do_check_eq(read_line_stream(tempInputStream)[1], "5678901234");
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tempFile.remove(false);
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tempInputStream.QueryInterface(Ci.nsISeekableStream);
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try {
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// The seek should reopen the file, which should fail.
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tempInputStream.seek(SET, 1);
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do_check_true(false);
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}
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catch (ex) {
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}
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// Test editing the file when autoclosing
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tempFile = create_temp_file("01234567890123456789");
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tempInputStream = new_partial_file_input_stream(tempFile, 5, 10,
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Ci.nsIFileInputStream.CLOSE_ON_EOF |
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Ci.nsIFileInputStream.REOPEN_ON_REWIND);
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tempInputStream.QueryInterface(Ci.nsILineInputStream);
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do_check_eq(read_line_stream(tempInputStream)[1], "5678901234");
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let ostream = Cc["@mozilla.org/network/file-output-stream;1"].
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createInstance(Ci.nsIFileOutputStream);
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ostream.init(tempFile, 0x02 | 0x08 | 0x20, // write, create, truncate
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0666, 0);
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let newData = "abcdefghijklmnopqrstuvwxyz";
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ostream.write(newData, newData.length);
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ostream.close();
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tempInputStream.QueryInterface(Ci.nsISeekableStream);
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tempInputStream.seek(SET, 1);
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do_check_eq(read_line_stream(tempInputStream)[1], newData.substr(6,9));
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// Test auto-delete and auto-close together
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tempFile = create_temp_file("01234567890123456789");
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tempInputStream = new_partial_file_input_stream(tempFile, 5, 10,
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Ci.nsIFileInputStream.CLOSE_ON_EOF |
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Ci.nsIFileInputStream.DELETE_ON_CLOSE);
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tempInputStream.QueryInterface(Ci.nsILineInputStream);
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do_check_eq(read_line_stream(tempInputStream)[1], "5678901234");
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do_check_false(tempFile.exists());
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}
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function test_binary_portion(start, length) {
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let subFile = create_temp_file(test_file_data.substr(start, length));
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let streamTests = [
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test_4k_read,
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test_max_read,
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test_seek,
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test_seek_then_read,
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];
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for (var test of streamTests) {
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let fileStream = new_file_input_stream(subFile);
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let partialStream = new_partial_file_input_stream(do_get_file(binary_test_file_name),
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start, length);
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test(fileStream, partialStream, length);
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fileStream.close();
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partialStream.close();
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}
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}
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function test_4k_read(fileStreamA, fileStreamB) {
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fileStreamA.QueryInterface(Ci.nsISeekableStream);
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fileStreamB.QueryInterface(Ci.nsISeekableStream);
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let streamA = new BinaryInputStream(fileStreamA);
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let streamB = new BinaryInputStream(fileStreamB);
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while(1) {
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do_check_eq(fileStreamA.tell(), fileStreamB.tell());
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let availA = streamA.available();
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let availB = streamB.available();
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do_check_eq(availA, availB);
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if (availA == 0)
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return;
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let readSize = availA > 4096 ? 4096 : availA;
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do_check_true(streamA.readBytes(readSize) ==
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streamB.readBytes(readSize));
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}
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}
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function test_max_read(fileStreamA, fileStreamB) {
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fileStreamA.QueryInterface(Ci.nsISeekableStream);
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fileStreamB.QueryInterface(Ci.nsISeekableStream);
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let streamA = new BinaryInputStream(fileStreamA);
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let streamB = new BinaryInputStream(fileStreamB);
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while(1) {
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do_check_eq(fileStreamA.tell(), fileStreamB.tell());
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let availA = streamA.available();
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let availB = streamB.available();
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do_check_eq(availA, availB);
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if (availA == 0)
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return;
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do_check_true(streamA.readBytes(availA) ==
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streamB.readBytes(availB));
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}
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}
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const SET = Ci.nsISeekableStream.NS_SEEK_SET;
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const CUR = Ci.nsISeekableStream.NS_SEEK_CUR;
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const END = Ci.nsISeekableStream.NS_SEEK_END;
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function test_seek(dummy, partialFileStream, size) {
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// We can't test the "real" filestream here as our existing file streams
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// are very broken and allows searching past the end of the file.
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partialFileStream.QueryInterface(Ci.nsISeekableStream);
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var tests = [
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[SET, 0],
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[SET, 5],
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[SET, 1000],
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[SET, size-10],
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[SET, size-5],
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[SET, size-1],
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[SET, size],
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[SET, size+10],
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[SET, 0],
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[CUR, 5],
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[CUR, -5],
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[SET, 5000],
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[CUR, -100],
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[CUR, 200],
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[CUR, -5000],
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[CUR, 5000],
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[CUR, size * 2],
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[SET, 1],
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[CUR, -1],
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[CUR, -1],
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[CUR, -1],
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[CUR, -1],
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[CUR, -1],
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[SET, size-1],
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[CUR, 1],
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[CUR, 1],
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[CUR, 1],
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[CUR, 1],
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[CUR, 1],
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[END, 0],
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[END, -1],
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[END, -5],
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[END, -1000],
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[END, -size+10],
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[END, -size+5],
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[END, -size+1],
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[END, -size],
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[END, -size-10],
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[END, 10],
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[CUR, 10],
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[CUR, 10],
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[CUR, 100],
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[CUR, 1000],
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[END, -1000],
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[CUR, 100],
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[CUR, 900],
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[CUR, 100],
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[CUR, 100],
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];
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let pos = 0;
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for (var test of tests) {
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let didThrow = false;
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try {
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partialFileStream.seek(test[0], test[1]);
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}
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catch (ex) {
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didThrow = true;
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}
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let newPos = test[0] == SET ? test[1] :
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test[0] == CUR ? pos + test[1] :
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size + test[1];
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if (newPos > size || newPos < 0) {
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do_check_true(didThrow);
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}
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else {
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do_check_false(didThrow);
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pos = newPos;
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}
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do_check_eq(partialFileStream.tell(), pos);
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do_check_eq(partialFileStream.available(), size - pos);
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}
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}
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function test_seek_then_read(fileStreamA, fileStreamB, size) {
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// For now we only test seeking inside the file since our existing file
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// streams behave very strange when seeking to past the end of the file.
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if (size < 20000) {
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return;
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}
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fileStreamA.QueryInterface(Ci.nsISeekableStream);
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fileStreamB.QueryInterface(Ci.nsISeekableStream);
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let streamA = new BinaryInputStream(fileStreamA);
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let streamB = new BinaryInputStream(fileStreamB);
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let read = {};
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var tests = [
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[SET, 0],
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[read, 1000],
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[read, 1000],
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[SET, 5],
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[read, 1000],
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[read, 5000],
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[CUR, 100],
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[read, 1000],
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[read, 5000],
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[CUR, -100],
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[read, 1000],
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[CUR, -100],
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[read, 5000],
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[END, -10],
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[read, 10],
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[END, -100],
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[read, 101],
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[CUR, -100],
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[read, 10],
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[SET, 0],
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[read, 20000],
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[read, 1],
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[read, 100],
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];
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for (var test of tests) {
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if (test[0] === read) {
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let didThrowA = false;
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let didThrowB = false;
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let bytesA, bytesB;
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try {
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bytesA = streamA.readBytes(test[1]);
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}
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catch (ex) {
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didThrowA = true;
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}
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try {
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bytesB = streamB.readBytes(test[1]);
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}
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catch (ex) {
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didThrowB = true;
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}
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do_check_eq(didThrowA, didThrowB);
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do_check_true(bytesA == bytesB);
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}
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else {
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fileStreamA.seek(test[0], test[1]);
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fileStreamB.seek(test[0], test[1]);
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}
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do_check_eq(fileStreamA.tell(), fileStreamB.tell());
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do_check_eq(fileStreamA.available(), fileStreamB.available());
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}
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}
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function test_text_portion(start, length) {
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let subFile = create_temp_file(test_file_data.substr(start, length));
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let streamTests = [
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test_readline,
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test_seek_then_readline,
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];
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for (var test of streamTests) {
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let fileStream = new_file_input_stream(subFile)
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.QueryInterface(Ci.nsILineInputStream);
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let partialStream = new_partial_file_input_stream(do_get_file(binary_test_file_name),
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start, length)
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.QueryInterface(Ci.nsILineInputStream);
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test(fileStream, partialStream, length);
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fileStream.close();
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partialStream.close();
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}
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}
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function test_readline(fileStreamA, fileStreamB)
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{
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let moreA = true, moreB;
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while(moreA) {
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let lineA, lineB;
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[moreA, lineA] = read_line_stream(fileStreamA);
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[moreB, lineB] = read_line_stream(fileStreamB);
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do_check_eq(moreA, moreB);
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do_check_true(lineA.value == lineB.value);
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}
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}
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function test_seek_then_readline(fileStreamA, fileStreamB, size) {
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// For now we only test seeking inside the file since our existing file
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// streams behave very strange when seeking to past the end of the file.
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if (size < 100) {
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return;
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}
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fileStreamA.QueryInterface(Ci.nsISeekableStream);
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fileStreamB.QueryInterface(Ci.nsISeekableStream);
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let read = {};
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var tests = [
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[SET, 0],
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[read, 5],
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[read, 5],
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[SET, 5],
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[read, 5],
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[read, 15],
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[CUR, 100],
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[read, 5],
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[read, 15],
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[CUR, -100],
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[read, 5],
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[CUR, -100],
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[read, 25],
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[END, -10],
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[read, 1],
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[END, -50],
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[read, 30],
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[read, 1],
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[read, 1],
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[CUR, -100],
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[read, 1],
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[SET, 0],
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[read, 10000],
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[read, 1],
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[read, 1],
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[SET, 0],
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[read, 1],
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];
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for (var test of tests) {
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if (test[0] === read) {
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for (let i = 0; i < test[1]; ++i) {
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let didThrowA = false;
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let didThrowB = false;
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let lineA, lineB, moreA, moreB;
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try {
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[moreA, lineA] = read_line_stream(fileStreamA);
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}
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catch (ex) {
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didThrowA = true;
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}
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try {
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[moreB, lineB] = read_line_stream(fileStreamB);
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}
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catch (ex) {
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didThrowB = true;
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}
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do_check_eq(didThrowA, didThrowB);
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do_check_eq(moreA, moreB);
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do_check_true(lineA == lineB);
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do_check_eq(fileStreamA.tell(), fileStreamB.tell());
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do_check_eq(fileStreamA.available(), fileStreamB.available());
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if (!moreA)
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break;
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}
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}
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else {
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if (!(test[0] == CUR && (test[1] > fileStreamA.available() ||
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test[1] < -fileStreamA.tell()))) {
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fileStreamA.seek(test[0], test[1]);
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fileStreamB.seek(test[0], test[1]);
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do_check_eq(fileStreamA.tell(), fileStreamB.tell());
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do_check_eq(fileStreamA.available(), fileStreamB.available());
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}
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}
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}
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}
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function read_line_stream(stream) {
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let line = {};
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let more = stream.readLine(line);
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return [more, line.value];
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}
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function new_file_input_stream(file) {
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var stream =
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Cc["@mozilla.org/network/file-input-stream;1"]
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.createInstance(Ci.nsIFileInputStream);
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stream.init(file, PR_RDONLY, 0, 0);
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return stream.QueryInterface(Ci.nsIInputStream);
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}
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function new_partial_file_input_stream(file, start, length, flags) {
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var stream =
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Cc["@mozilla.org/network/partial-file-input-stream;1"]
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.createInstance(Ci.nsIPartialFileInputStream);
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stream.init(file, start, length, PR_RDONLY, 0, flags || 0);
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return stream.QueryInterface(Ci.nsIInputStream);
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}
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function create_temp_file(data) {
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let file = Cc["@mozilla.org/file/directory_service;1"].
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getService(Ci.nsIProperties).
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get("ProfD", Ci.nsIFile);
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file.append("fileinputstream-test-file.tmp");
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file.createUnique(Ci.nsIFile.NORMAL_FILE_TYPE, 0666);
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let ostream = Cc["@mozilla.org/network/file-output-stream;1"].
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createInstance(Ci.nsIFileOutputStream);
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ostream.init(file, 0x02 | 0x08 | 0x20, // write, create, truncate
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0666, 0);
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do_check_eq(ostream.write(data, data.length), data.length);
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ostream.close();
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return file;
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}
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