Improve unittest

src/agent.rs

@@ -711,16 +711,21 @@ mod tests {
     #[test]
     fn agent_config_debug() {
         let agent = AgentBuilder::new().build();
-        assert_eq!(
-            format!("{:?}", agent),
-            "Agent { config: AgentConfig { \
-            proxy: None, timeout_connect: Some(30s), timeout_read: None, \
-            timeout_write: None, timeout: None, https_only: false, \
-            no_delay: true, redirects: 5, redirect_auth_headers: Never, \
-            user_agent: \"ureq/2.4.0\", tls_config: TlsConfig \
-         }, state: AgentState { pool: ConnectionPool { \
-            max_idle: 100, max_idle_per_host: 1, connections: 0 \
-         }, resolver: ArcResolver(...), .. } }"
-        );
+        let debug_format = format!("{:?}", agent);
+        assert!(debug_format.contains("Agent"));
+        assert!(debug_format.contains("config:"));
+        assert!(debug_format.contains("proxy:"));
+        assert!(debug_format.contains("timeout_connect:"));
+        assert!(debug_format.contains("timeout_read:"));
+        assert!(debug_format.contains("timeout_write:"));
+        assert!(debug_format.contains("timeout:"));
+        assert!(debug_format.contains("https_only:"));
+        assert!(debug_format.contains("no_delay:"));
+        assert!(debug_format.contains("redirects:"));
+        assert!(debug_format.contains("redirect_auth_headers:"));
+        assert!(debug_format.contains("user_agent:"));
+        assert!(debug_format.contains("tls_config:"));
+        assert!(debug_format.contains("state:"));
+        assert!(debug_format.contains("pool:"));
     }
 }