Zig 0.17.0-dev (Split by item)

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testOne

main.testOne

fn testOne(context: void, smith: *std.testing.Smith) !void

File

lib/init/src/main.zig:46

Code

fn testOne(context: void, smith: *std.testing.Smith) !void {
    _ = context;
    // Try passing `--fuzz` to `zig build test` and see if it manages to fail this test case!

    const gpa = std.testing.allocator;
    var list: std.ArrayList(u8) = .empty;
    defer list.deinit(gpa);
    while (!smith.eos()) switch (smith.value(enum { add_data, dup_data })) {
        .add_data => {
            const slice = try list.addManyAsSlice(gpa, smith.value(u4));
            smith.bytes(slice);
        },
        .dup_data => {
            if (list.items.len == 0) continue;
            if (list.items.len > std.math.maxInt(u32)) return error.SkipZigTest;
            const len = smith.valueRangeAtMost(u32, 1, @min(32, list.items.len));
            const off = smith.valueRangeAtMost(u32, 0, @intCast(list.items.len - len));
            try list.appendSlice(gpa, list.items[off..][0..len]);
            try std.testing.expectEqualSlices(
                u8,
                list.items[off..][0..len],
                list.items[list.items.len - len ..],
            );
        },
    };
}