1const std = @import("std");
2const Io = std.Io;
3
4const _NAME = @import(".NAME");
5
6pub fn main(init: std.process.Init) !void {
7 // Prints to stderr, unbuffered, ignoring potential errors.
8 std.debug.print("All your {s} are belong to us.\n", .{"codebase"});
9
10 // This is appropriate for anything that lives as long as the process.
11 const arena: std.mem.Allocator = init.arena.allocator();
12
13 // Accessing command line arguments:
14 const args = try init.minimal.args.toSlice(arena);
15 for (args) |arg| {
16 std.log.info("arg: {s}", .{arg});
17 }
18
19 // In order to do I/O operations need an `Io` instance.
20 const io = init.io;
21
22 // Stdout is for the actual output of your application, for example if you
23 // are implementing gzip, then only the compressed bytes should be sent to
24 // stdout, not any debugging messages.
25 var stdout_buffer: [1024]u8 = undefined;
26 var stdout_file_writer: Io.File.Writer = .init(.stdout(), io, &stdout_buffer);
27 const stdout_writer = &stdout_file_writer.interface;
28
29 try _NAME.printAnotherMessage(stdout_writer);
30
31 try stdout_writer.flush(); // Don't forget to flush!
32}
33
34test "simple test" {
35 const gpa = std.testing.allocator;
36 var list: std.ArrayList(i32) = .empty;
37 defer list.deinit(gpa); // Try commenting this out and see if zig detects the memory leak!
38 try list.append(gpa, 42);
39 try std.testing.expectEqual(@as(i32, 42), list.pop());
40}
41
42test "fuzz example" {
43 try std.testing.fuzz({}, testOne, .{});
44}
45
46fn testOne(context: void, smith: *std.testing.Smith) !void {
47 _ = context;
48 // Try command `zig build test --fuzz -Doptimize=ReleaseFast` to see if it manages to fail this test case!
49
50 const gpa = std.testing.allocator;
51 var list: std.ArrayList(u8) = .empty;
52 defer list.deinit(gpa);
53 while (!smith.eos()) switch (smith.value(enum { add_data, dup_data })) {
54 .add_data => {
55 const slice = try list.addManyAsSlice(gpa, smith.value(u4));
56 smith.bytes(slice);
57 },
58 .dup_data => {
59 if (list.items.len == 0) continue;
60 if (list.items.len > std.math.maxInt(u32)) return error.SkipZigTest;
61 const len = smith.valueRangeAtMost(u32, 1, @min(32, list.items.len));
62 const off = smith.valueRangeAtMost(u32, 0, @intCast(list.items.len - len));
63 try list.appendSlice(gpa, list.items[off..][0..len]);
64 try std.testing.expectEqualSlices(
65 u8,
66 list.items[off..][0..len],
67 list.items[list.items.len - len ..],
68 );
69 },
70 };
71}