1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/netwerk/test/unit/test_localstreams.js Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,83 @@
1.4 +// Tests bug 304414
1.5 +
1.6 +const PR_RDONLY = 0x1; // see prio.h
1.7 +
1.8 +// Does some sanity checks on the stream and returns the number of bytes read
1.9 +// when the checks passed.
1.10 +function test_stream(stream) {
1.11 + // This test only handles blocking streams; that's desired for file streams
1.12 + // anyway.
1.13 + do_check_eq(stream.isNonBlocking(), false);
1.14 +
1.15 + // Check that the stream is not buffered
1.16 + do_check_eq(Components.classes["@mozilla.org/io-util;1"]
1.17 + .getService(Components.interfaces.nsIIOUtil)
1.18 + .inputStreamIsBuffered(stream),
1.19 + false);
1.20 +
1.21 + // Wrap it in a binary stream (to avoid wrong results that
1.22 + // scriptablestream would produce with binary content)
1.23 + var binstream = Components.classes['@mozilla.org/binaryinputstream;1']
1.24 + .createInstance(Components.interfaces.nsIBinaryInputStream);
1.25 + binstream.setInputStream(stream);
1.26 +
1.27 + var numread = 0;
1.28 + for (;;) {
1.29 + do_check_eq(stream.available(), binstream.available());
1.30 + var avail = stream.available();
1.31 + do_check_neq(avail, -1);
1.32 +
1.33 + // PR_UINT32_MAX and PR_INT32_MAX; the files we're testing with aren't that
1.34 + // large.
1.35 + do_check_neq(avail, Math.pow(2, 32) - 1);
1.36 + do_check_neq(avail, Math.pow(2, 31) - 1);
1.37 +
1.38 + if (!avail) {
1.39 + // For blocking streams, available() only returns 0 on EOF
1.40 + // Make sure that there is really no data left
1.41 + var could_read = false;
1.42 + try {
1.43 + binstream.readByteArray(1);
1.44 + could_read = true;
1.45 + } catch (e) {
1.46 + // We expect the exception, so do nothing here
1.47 + }
1.48 + if (could_read)
1.49 + do_throw("Data readable when available indicated EOF!");
1.50 + return numread;
1.51 + }
1.52 +
1.53 + dump("Trying to read " + avail + " bytes\n");
1.54 + // Note: Verification that this does return as much bytes as we asked for is
1.55 + // done in the binarystream implementation
1.56 + var data = binstream.readByteArray(avail);
1.57 +
1.58 + numread += avail;
1.59 + }
1.60 + return numread;
1.61 +}
1.62 +
1.63 +function stream_for_file(file) {
1.64 + var str = Components.classes["@mozilla.org/network/file-input-stream;1"]
1.65 + .createInstance(Components.interfaces.nsIFileInputStream);
1.66 + str.init(file, PR_RDONLY, 0, 0);
1.67 + return str;
1.68 +}
1.69 +
1.70 +function stream_from_channel(file) {
1.71 + var ios = Components.classes["@mozilla.org/network/io-service;1"]
1.72 + .getService(Components.interfaces.nsIIOService);
1.73 + var uri = ios.newFileURI(file);
1.74 + return ios.newChannelFromURI(uri).open();
1.75 +}
1.76 +
1.77 +function run_test() {
1.78 + // Get a file and a directory in order to do some testing
1.79 + var file = do_get_file("../unit/data/test_readline6.txt");
1.80 + var len = file.fileSize;
1.81 + do_check_eq(test_stream(stream_for_file(file)), len);
1.82 + do_check_eq(test_stream(stream_from_channel(file)), len);
1.83 + var dir = file.parent;
1.84 + test_stream(stream_from_channel(dir)); // Can't do size checking
1.85 +}
1.86 +
