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73 lines
2.4 KiB
Rust
73 lines
2.4 KiB
Rust
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//@ run-pass
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//@ only-windows
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//@ needs-subprocess
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//@ no-prefer-dynamic
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// Test Windows std::process::Command search path semantics when setting PATH on the child process.
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// NOTE: The exact semantics here are (possibly) subject to change.
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use std::process::Command;
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use std::{env, fs, path};
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fn main() {
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if env::args().skip(1).any(|s| s == "--child") {
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child();
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} else if env::args().skip(1).any(|s| s == "--parent") {
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parent();
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} else {
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setup();
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}
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}
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// Set up the directories so that there are three app dirs:
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// app: Where the parent app is run from
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// parent: In the parent's PATH env var
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// child: In the child's PATH env var
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fn setup() {
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let exe = env::current_exe().unwrap();
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fs::create_dir_all("app").unwrap();
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fs::copy(&exe, "app/myapp.exe").unwrap();
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fs::create_dir_all("parent").unwrap();
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fs::copy(&exe, "parent/myapp.exe").unwrap();
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fs::create_dir_all("child").unwrap();
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fs::copy(&exe, "child/myapp.exe").unwrap();
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let parent_path = path::absolute("parent").unwrap();
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let status =
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Command::new("./app/myapp.exe").env("PATH", parent_path).arg("--parent").status().unwrap();
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// print the status in case of abnormal exit
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dbg!(status);
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assert!(status.success());
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}
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// The child simply prints the name of its parent directory.
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fn child() {
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let exe = env::current_exe().unwrap();
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let parent = exe.parent().unwrap().file_name().unwrap();
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println!("{}", parent.display());
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}
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fn parent() {
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let exe = env::current_exe().unwrap();
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let name = exe.file_name().unwrap();
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// By default, the application dir will be search first for the exe
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let output = Command::new(&name).arg("--child").output().unwrap();
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assert_eq!(output.stdout, b"app\n");
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// Setting an environment variable should not change the above.
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let output = Command::new(&name).arg("--child").env("a", "b").output().unwrap();
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assert_eq!(output.stdout, b"app\n");
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// Setting a child path means that path will be searched first.
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let child_path = path::absolute("child").unwrap();
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let output = Command::new(&name).arg("--child").env("PATH", child_path).output().unwrap();
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assert_eq!(output.stdout, b"child\n");
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// Setting a child path that does not contain the exe (currently) means
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// we fallback to searching the app dir.
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let output = Command::new(&name).arg("--child").env("PATH", "").output().unwrap();
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assert_eq!(output.stdout, b"app\n");
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}
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