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std.compress.lzma: tests passing

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This commit is contained in:
Andrew Kelley 2025-08-25 18:47:33 -07:00
parent 58e60697e2
commit 8523cbef0e
2 changed files with 22 additions and 4 deletions
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13
lib/std/compress/lzma.zig
View file

@ -696,6 +696,7 @@ pub const Decompress = struct {
.vtable = &.{
.readVec = readVec,
.stream = stream,
.discard = discard,
},
.seek = 0,
.end = 0,
@ -746,12 +747,22 @@ pub const Decompress = struct {
return readIndirect(r);
}
fn discard(r: *Reader, limit: std.Io.Limit) Reader.Error!usize {
const d: *Decompress = @alignCast(@fieldParentPtr("reader", r));
_ = d;
_ = limit;
@panic("TODO");
}
fn readIndirect(r: *Reader) Reader.Error!usize {
const d: *Decompress = @alignCast(@fieldParentPtr("reader", r));
const gpa = d.gpa;
var allocating = Writer.Allocating.initOwnedSlice(gpa, r.buffer);
allocating.writer.end = r.end;
defer r.end = allocating.writer.end;
defer {
r.buffer = allocating.writer.buffer;
r.end = allocating.writer.end;
}
if (d.decode.state == math.maxInt(usize)) return error.EndOfStream;
d.decode.process(d.input, &allocating, &d.buffer, &d.range_decoder) catch |err| switch (err) {
error.WriteFailed => {

13
lib/std/compress/lzma/test.zig
View file

@ -18,7 +18,14 @@ fn testDecompressEqual(expected: []const u8, compressed: []const u8) !void {
}
fn testDecompressError(expected: anyerror, compressed: []const u8) !void {
return std.testing.expectError(expected, testDecompress(compressed));
const gpa = std.testing.allocator;
var stream: std.Io.Reader = .fixed(compressed);
var decompressor = try lzma.Decompress.initOptions(&stream, gpa, &.{}, .{}, std.math.maxInt(u32));
defer decompressor.deinit();
try std.testing.expectError(error.ReadFailed, decompressor.reader.allocRemaining(gpa, .unlimited));
try std.testing.expectEqual(expected, decompressor.err orelse return error.TestFailed);
}
test "decompress empty world" {
@ -76,14 +83,14 @@ test "known size with end of payload marker" {
test "too big uncompressed size in header" {
try testDecompressError(
error.CorruptInput,
error.DecompressedSizeMismatch,
@embedFile("testdata/bad-too_big_size-with_eopm.lzma"),
);
}
test "too small uncompressed size in header" {
try testDecompressError(
error.CorruptInput,
error.DecompressedSizeMismatch,
@embedFile("testdata/bad-too_small_size-without_eopm-3.lzma"),
);
}