feat(agent): collecte SMART via smartctl -j

agent/tests/smart_test.rs

@@ -0,0 +1,45 @@
+use nanometrics_agent::metrics::smart;
+
+const SMART_JSON_OK: &str = r#"{
+  "smart_status": {"passed": true},
+  "temperature": {"current": 34},
+  "ata_smart_attributes": {
+    "table": [
+      {"id": 5,   "name": "Reallocated_Sector_Ct", "raw": {"value": 0},    "value": 200},
+      {"id": 9,   "name": "Power_On_Hours",         "raw": {"value": 4213}, "value": 77},
+      {"id": 177, "name": "Wear_Leveling_Count",    "raw": {"value": 0},    "value": 98}
+    ]
+  }
+}"#;
+
+#[test]
+fn test_parse_smart_json_ok() {
+    let result = smart::parse_json(SMART_JSON_OK).unwrap();
+    assert!(result.passed);
+    assert_eq!(result.temperature, Some(34));
+    assert_eq!(result.reallocated_sectors, Some(0));
+    assert_eq!(result.power_on_hours, Some(4213));
+    assert_eq!(result.wear_level, Some(98));
+}
+
+const SMART_JSON_FAIL: &str = r#"{
+  "smart_status": {"passed": false},
+  "temperature": {"current": 52},
+  "ata_smart_attributes": {
+    "table": [
+      {"id": 5, "name": "Reallocated_Sector_Ct", "raw": {"value": 47}, "value": 150}
+    ]
+  }
+}"#;
+
+#[test]
+fn test_parse_smart_json_fail() {
+    let result = smart::parse_json(SMART_JSON_FAIL).unwrap();
+    assert!(!result.passed);
+    assert_eq!(result.reallocated_sectors, Some(47));
+}
+
+#[test]
+fn test_smart_disponible() {
+    let _ = smart::is_available();
+}