1 files changed, 100 insertions, 0 deletions
diff --git a/third_party/rust/minidump-writer/tests/common/mod.rs b/third_party/rust/minidump-writer/tests/common/mod.rs
new file mode 100644
index 0000000000..bbb6abf35c
--- /dev/null
+++ b/third_party/rust/minidump-writer/tests/common/mod.rs
@@ -0,0 +1,100 @@
+use std::error;
+use std::io::{BufRead, BufReader, Write};
+use std::process::{Child, Command, Stdio};
+use std::result;
+
+#[allow(unused)]
+type Error = Box<dyn error::Error + std::marker::Send + std::marker::Sync>;
+#[allow(unused)]
+pub type Result<T> = result::Result<T, Error>;
+
+#[allow(unused)]
+pub fn spawn_child(command: &str, args: &[&str]) {
+    let mut cmd_object = Command::new("cargo");
+    let mut cmd_ref = cmd_object
+        .env("RUST_BACKTRACE", "1")
+        .arg("run")
+        .arg("-q")
+        .arg("--bin")
+        .arg("test")
+        .arg("--")
+        .arg(command);
+    for arg in args {
+        cmd_ref = cmd_ref.arg(arg);
+    }
+    let child = cmd_ref.output().expect("failed to execute child");
+
+    println!("Child output:");
+    std::io::stdout().write_all(&child.stdout).unwrap();
+    std::io::stdout().write_all(&child.stderr).unwrap();
+    assert_eq!(child.status.code().expect("No return value"), 0);
+}
+
+fn start_child_and_wait_for_threads_helper(cmd: &str, num: usize) -> Child {
+    let mut child = Command::new("cargo")
+        .env("RUST_BACKTRACE", "1")
+        .arg("run")
+        .arg("-q")
+        .arg("--bin")
+        .arg("test")
+        .arg("--")
+        .arg(cmd)
+        .arg(format!("{}", num))
+        .stdout(Stdio::piped())
+        .spawn()
+        .expect("failed to execute child");
+
+    wait_for_threads(&mut child, num);
+    child
+}
+
+#[allow(unused)]
+pub fn start_child_and_wait_for_threads(num: usize) -> Child {
+    start_child_and_wait_for_threads_helper("spawn_and_wait", num)
+}
+
+#[allow(unused)]
+pub fn start_child_and_wait_for_named_threads(num: usize) -> Child {
+    start_child_and_wait_for_threads_helper("spawn_name_wait", num)
+}
+
+#[allow(unused)]
+pub fn start_child_and_wait_for_create_files(num: usize) -> Child {
+    start_child_and_wait_for_threads_helper("create_files_wait", num)
+}
+
+#[allow(unused)]
+pub fn wait_for_threads(child: &mut Child, num: usize) {
+    let mut f = BufReader::new(child.stdout.as_mut().expect("Can't open stdout"));
+    let mut lines = 0;
+    while lines < num {
+        let mut buf = String::new();
+        match f.read_line(&mut buf) {
+            Ok(_) => {
+                if buf == "1\n" {
+                    lines += 1;
+                }
+            }
+            Err(e) => {
+                std::panic::panic_any(e);
+            }
+        }
+    }
+}
+
+#[allow(unused)]
+pub fn start_child_and_return(args: &[&str]) -> Child {
+    let mut child = Command::new("cargo")
+        .env("RUST_BACKTRACE", "1")
+        .arg("run")
+        .arg("-q")
+        .arg("--bin")
+        .arg("test")
+        .arg("--")
+        .args(args)
+        .stdout(Stdio::piped())
+        .spawn()
+        .expect("failed to execute child");
+
+    child
+}