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std.Io.Reader: update OneByteReader usage to std.testing.Reader

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This commit is contained in:
Andrew Kelley
2025-07-16 23:02:39 -07:00
parent b7d7446fbb
commit 86699acbb9
2 changed files with 11 additions and 29 deletions
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10
lib/std/testing.zig
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@@ -1207,12 +1207,14 @@ pub inline fn fuzz(
return @import("root").fuzz(context, testOne, options);
}
/// A `std.io.Reader` that writes a predetermined list of buffers during `stream`.
/// A `std.Io.Reader` that writes a predetermined list of buffers during `stream`.
pub const Reader = struct {
calls: []const Call,
interface: std.io.Reader,
interface: std.Io.Reader,
next_call_index: usize,
next_offset: usize,
/// Further reduces how many bytes are written in each `stream` call.
artificial_limit: std.Io.Limit = .unlimited,
pub const Call = struct {
buffer: []const u8,
@@ -1232,11 +1234,11 @@ pub const Reader = struct {
};
}
fn stream(io_r: *std.io.Reader, w: *std.io.Writer, limit: std.io.Limit) std.io.Reader.StreamError!usize {
fn stream(io_r: *std.Io.Reader, w: *std.Io.Writer, limit: std.Io.Limit) std.Io.Reader.StreamError!usize {
const r: *Reader = @alignCast(@fieldParentPtr("interface", io_r));
if (r.calls.len - r.next_call_index == 0) return error.EndOfStream;
const call = r.calls[r.next_call_index];
const buffer = limit.sliceConst(call.buffer[r.next_offset..]);
const buffer = r.artificial_limit.sliceConst(limit.sliceConst(call.buffer[r.next_offset..]));
const n = try w.write(buffer);
r.next_offset += n;
if (call.buffer.len - r.next_offset == 0) {