notification: webhook channel

internal/notification/webhook_test.go

@@ -0,0 +1,83 @@
+package notification
+
+import (
+	"context"
+	"encoding/json"
+	"net/http"
+	"net/http/httptest"
+	"testing"
+	"time"
+)
+
+func TestWebhookSendsCorrectPayloadAndHeaders(t *testing.T) {
+	t.Parallel()
+	var got webhookBody
+	var auth, custom string
+	srv := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		auth = r.Header.Get("Authorization")
+		custom = r.Header.Get("X-Test")
+		_ = json.NewDecoder(r.Body).Decode(&got)
+		w.WriteHeader(http.StatusOK)
+	}))
+	defer srv.Close()
+
+	ch := NewWebhookChannel(WebhookConfig{
+		URL: srv.URL, BearerToken: "tok-123",
+		HeaderName: "X-Test", HeaderValue: "yes",
+	})
+	code, _, err := ch.Send(context.Background(), Payload{
+		Event: EventRaised, AlertID: "01K",
+		Severity: "warning", Kind: "backup_failed",
+		HostID: "h1", HostName: "alfa-01",
+		Message:  "Backup failed",
+		RaisedAt: time.Date(2026, 5, 4, 15, 42, 1, 0, time.UTC),
+		Link:     "https://rm.example/alerts/01K",
+	})
+	if err != nil {
+		t.Fatalf("send: %v", err)
+	}
+	if code != 200 {
+		t.Errorf("status: %d", code)
+	}
+	if got.Event != "alert.raised" || got.Kind != "backup_failed" || got.Message != "Backup failed" {
+		t.Errorf("body: %+v", got)
+	}
+	if auth != "Bearer tok-123" {
+		t.Errorf("auth: %q", auth)
+	}
+	if custom != "yes" {
+		t.Errorf("custom header: %q", custom)
+	}
+}
+
+func TestWebhookReturnsErrorOn4xx(t *testing.T) {
+	t.Parallel()
+	srv := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, _ *http.Request) {
+		w.WriteHeader(http.StatusUnauthorized)
+	}))
+	defer srv.Close()
+	ch := NewWebhookChannel(WebhookConfig{URL: srv.URL})
+	code, _, err := ch.Send(context.Background(), Payload{Event: EventRaised})
+	if err == nil {
+		t.Fatal("expected error for 401")
+	}
+	if code != 401 {
+		t.Errorf("code: %d", code)
+	}
+}
+
+func TestWebhookRespectsCtxTimeout(t *testing.T) {
+	t.Parallel()
+	srv := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, _ *http.Request) {
+		time.Sleep(2 * time.Second)
+		w.WriteHeader(200)
+	}))
+	defer srv.Close()
+	ch := NewWebhookChannel(WebhookConfig{URL: srv.URL})
+	ctx, cancel := context.WithTimeout(context.Background(), 200*time.Millisecond)
+	defer cancel()
+	_, _, err := ch.Send(ctx, Payload{Event: EventRaised})
+	if err == nil {
+		t.Fatal("expected timeout error")
+	}
+}