feat: get exit status

src/docker.rs

@@ -32,6 +32,15 @@ impl Docker {
         child.wait().unwrap();
     }
 
+    pub fn get_exit_status(name: &str) -> isize {
+        let output = Command::new("docker")
+            .args(["inspect", name, "--format={{.State.ExitCode}}"])
+            .output()
+            .expect("unable to exit status");
+        let out = String::from_utf8(output.stdout).unwrap();
+        let out = out.trim();
+        out.parse::<isize>().unwrap()
+    }
     pub fn get_logs(name: &str) -> String {
         let output = Command::new("docker")
             .args(["logs", name])
@@ -60,7 +69,7 @@ mod tests {
     use super::*;
 
     #[test]
-    fn test_docker() {
+    fn test_docker_util() {
         Docker::version();
         let name = format!("test_sleep__{}", get_random(4));
         let mut env = HashMap::new();
@@ -79,6 +88,7 @@ mod tests {
         assert!(logs.contains("running"));
         assert!(logs.contains("FOO=BAR"));
         assert!(logs.contains("BAZ=BOO"));
+        assert_eq!(Docker::get_exit_status(&name), 0);
         Docker::rm_container(&name, true);
     }
 }