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deflate: Update fuzzed test cases and add InvalidTree test cases

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This commit is contained in:
Ryan Liptak 2021-10-02 03:38:03 -07:00
parent 933fd5110d
commit 36f1f4f9fe
1 changed files with 15 additions and 1 deletions
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16
lib/std/compress/deflate.zig
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@ -702,8 +702,22 @@ test "empty distance alphabet" {
test "inflateStream fuzzing" {
// see https://github.com/ziglang/zig/issues/9842
try std.testing.expectError(error.EndOfStream, testInflate("\x950000"));
try std.testing.expectError(error.EndOfStream, testInflate("\x95\x90=o\xc20\x10\x86\xf30"));
try std.testing.expectError(error.OutOfCodes, testInflate("\x950\x00\x0000000"));
// Huffman.construct errors
// lencode
try std.testing.expectError(error.InvalidTree, testInflate("\x950000"));
try std.testing.expectError(error.InvalidTree, testInflate("\x05000"));
// hlen
try std.testing.expectError(error.InvalidTree, testInflate("\x05\xea\x01\t\x00\x00\x00\x01\x00\\\xbf.\t\x00"));
// hdist
try std.testing.expectError(error.InvalidTree, testInflate("\x05\xe0\x01A\x00\x00\x00\x00\x10\\\xbf."));
// Huffman.construct -> error.IncompleteSet returns that shouldn't give error.InvalidTree
// (like the "empty distance alphabet" test but for ndist instead of nlen)
try std.testing.expectError(error.EndOfStream, testInflate("\x05\xe0\x01\t\x00\x00\x00\x00\x10\\\xbf\xce"));
try testInflate("\x15\xe0\x01\t\x00\x00\x00\x00\x10\\\xbf.0");
}
fn testInflate(data: []const u8) !void {