2 files changed, 52 insertions, 0 deletions
diff --git a/tests/process.rs b/tests/process.rs
new file mode 100644
index 0000000000..2281a9d990
--- /dev/null
+++ b/tests/process.rs
@@ -0,0 +1,36 @@
+extern crate talpid_core;
+
+mod util;
+
+use talpid_core::process::OpenVpnBuilder;
+
+#[cfg(target_os = "linux")]
+#[test]
+fn check_test_environment() {
+    use std::env;
+    let test_threads = env::var("RUST_TEST_THREADS");
+    if !test_threads.is_ok() || test_threads.unwrap() != "1" {
+        panic!("Tests must be run with environment variable RUST_TEST_THREADS=1");
+    }
+}
+
+#[cfg(target_os = "linux")]
+#[test]
+fn openvpn_builder_starts_correct_process() {
+    let mut child = OpenVpnBuilder::new("echo").spawn().unwrap();
+    let args = util::read_args_for_proc(child.id());
+
+    assert_eq!(vec!["echo"], args);
+    child.kill().unwrap();
+}
+
+#[cfg(target_os = "linux")]
+#[test]
+fn openvpn_builder_passes_config() {
+    let config_path = "/path/to/config".to_owned();
+    let mut child = OpenVpnBuilder::new("echo").config(&config_path).spawn().unwrap();
+    let args = util::read_args_for_proc(child.id());
+
+    assert!(args.contains(&config_path));
+    child.kill().unwrap();
+}
diff --git a/tests/util.rs b/tests/util.rs
new file mode 100644
index 0000000000..8fe87e5783
--- /dev/null
+++ b/tests/util.rs
@@ -0,0 +1,16 @@
+use std::fs::File;
+use std::io::Read;
+use std::path::Path;
+
+pub fn read_file<P: AsRef<Path>>(path: P) -> String {
+    let mut string = String::new();
+    let mut f = File::open(path).unwrap();
+    f.read_to_string(&mut string).unwrap();
+    string
+}
+
+#[cfg(target_os = "linux")]
+pub fn read_args_for_proc(pid: u32) -> Vec<String> {
+    let cmdline = read_file(format!("/proc/{}/cmdline", pid));
+    cmdline.split_terminator('\0').map(String::from).collect()
+}