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vaultmesh-observability/tests/smoketest.rs

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+//! Smoke test for the observability exporter HTTP server
+
+use std::net::SocketAddr;
+use std::sync::Arc;
+use tokio::time::{sleep, Duration};
+use vaultmesh_observability::ObservabilityEngine;
+
+#[tokio::test]
+async fn test_metrics_endpoint_returns_200() {
+    let engine = Arc::new(ObservabilityEngine::new());
+    let addr: SocketAddr = "127.0.0.1:19108".parse().unwrap();
+
+    // Prometheus only outputs metrics after they've been observed
+    engine.observe_emitted("test", 0.01);
+    engine.set_anchor_age(1700000000.0);
+
+    engine.clone().serve(&addr).await.expect("serve failed");
+
+    // Give the server time to start
+    sleep(Duration::from_millis(100)).await;
+
+    // Request /metrics
+    let resp = reqwest::get("http://127.0.0.1:19108/metrics")
+        .await
+        .expect("request failed");
+
+    assert!(resp.status().is_success(), "Expected 200 OK");
+
+    let body = resp.text().await.expect("body read failed");
+    assert!(
+        body.contains("vaultmesh_receipts_total"),
+        "Expected vaultmesh_receipts_total metric"
+    );
+    assert!(
+        body.contains("vaultmesh_anchor_age_seconds"),
+        "Expected vaultmesh_anchor_age_seconds metric"
+    );
+}
+
+#[tokio::test]
+async fn test_health_endpoint() {
+    let engine = Arc::new(ObservabilityEngine::new());
+    let addr: SocketAddr = "127.0.0.1:19109".parse().unwrap();
+
+    engine.clone().serve(&addr).await.expect("serve failed");
+    sleep(Duration::from_millis(100)).await;
+
+    let resp = reqwest::get("http://127.0.0.1:19109/health")
+        .await
+        .expect("request failed");
+
+    assert!(resp.status().is_success());
+    let body = resp.text().await.unwrap();
+    assert_eq!(body, "ok");
+}
+
+#[tokio::test]
+async fn test_metrics_after_observations() {
+    let engine = Arc::new(ObservabilityEngine::new());
+    let addr: SocketAddr = "127.0.0.1:19110".parse().unwrap();
+
+    // Record some metrics before starting server
+    engine.observe_emitted("guardian", 0.05);
+    engine.observe_emitted("treasury", 0.02);
+    engine.observe_failed("mesh", "timeout");
+    engine.set_anchor_age(1700000000.0);
+
+    engine.clone().serve(&addr).await.expect("serve failed");
+    sleep(Duration::from_millis(100)).await;
+
+    let resp = reqwest::get("http://127.0.0.1:19110/metrics")
+        .await
+        .expect("request failed");
+    let body = resp.text().await.unwrap();
+
+    // Check that our recorded metrics appear
+    assert!(body.contains("guardian"), "Expected guardian label");
+    assert!(body.contains("treasury"), "Expected treasury label");
+    assert!(body.contains("mesh"), "Expected mesh label");
+    assert!(body.contains("timeout"), "Expected timeout reason");
+    assert!(
+        body.contains("1.7e+09") || body.contains("1700000000"),
+        "Expected anchor age value"
+    );
+}