grouped runtime reads and waits selector modes (#5)

- grouped runtime reads and waits
selector modes
- Fix wait command client timeouts and test failures

tests/support/mod.rs

@@ -21,6 +21,13 @@ pub fn env_lock() -> &'static Mutex<()> {
     LOCK.get_or_init(|| Mutex::new(()))
 }
 
+pub fn env_lock_guard() -> std::sync::MutexGuard<'static, ()> {
+    match env_lock().lock() {
+        Ok(guard) => guard,
+        Err(poisoned) => poisoned.into_inner(),
+    }
+}
+
 pub struct SessionEnvGuard {
     old_session_type: Option<String>,
 }
@@ -218,3 +225,7 @@ pub fn successful_json_response(output: Output) -> Result<serde_json::Value> {
 
     serde_json::from_slice(&output.stdout).context("Failed to parse JSON output from deskctl")
 }
+
+pub fn json_response(output: &Output) -> Result<serde_json::Value> {
+    serde_json::from_slice(&output.stdout).context("Failed to parse JSON output from deskctl")
+}