1const std = @import("std");
 2const builtin = @import("builtin");
 3
 4pub fn build(b: *std.Build) void {
 5    const test_step = b.step("test", "Test it");
 6    b.default_step = test_step;
 7
 8    const optimize: std.builtin.OptimizeMode = .Debug;
 9    const target = b.graph.host;
10
11    if (builtin.os.tag == .wasi) return;
12
13    const child = b.addExecutable(.{
14        .name = "child",
15        .root_module = b.createModule(.{
16            .root_source_file = b.path("child.zig"),
17            .optimize = optimize,
18            .target = target,
19        }),
20    });
21
22    const main = b.addExecutable(.{
23        .name = "main",
24        .root_module = b.createModule(.{
25            .root_source_file = b.path("main.zig"),
26            .optimize = optimize,
27            .target = target,
28        }),
29    });
30    const run = b.addRunArtifact(main);
31    run.addArtifactArg(child);
32    run.expectExitCode(0);
33
34    // Use a temporary directory within the cache as the CWD to test
35    // spawning the child using a path that contains a leading `..` component.
36    const run_relative = b.addRunArtifact(main);
37    run_relative.addArtifactArg(child);
38    const write_tmp_dir = b.addWriteFiles();
39    const tmp_cwd = write_tmp_dir.getDirectory();
40    run_relative.addDirectoryArg(tmp_cwd);
41    run_relative.setCwd(tmp_cwd);
42    run_relative.expectExitCode(0);
43
44    test_step.dependOn(&run.step);
45    test_step.dependOn(&run_relative.step);
46}