test(maintenance): add policy executor and handler tests

Табличные тесты PolicyExecutor, ConfigProvider reload, memory CRUD политик и 503 для /v1/maintenance/* на memory-бэкенде без PostgreSQL.

Co-authored-by: Cursor <[email protected]>

internal/httpapi/routes_maintenance_test.go

@@ -0,0 +1,46 @@
+package httpapi
+
+import (
+	"net/http"
+	"net/http/httptest"
+	"strings"
+	"testing"
+)
+
+func TestMaintenancePoliciesMemoryBackend503(t *testing.T) {
+	srv, err := New(Options{SeedDemo: true, InsecureDev: true})
+	if err != nil {
+		t.Fatal(err)
+	}
+	defer srv.Close()
+	handler := srv.Handler()
+
+	tests := []struct {
+		method string
+		path   string
+		body   string
+	}{
+		{http.MethodGet, "/v1/maintenance/policies", ""},
+		{http.MethodPost, "/v1/maintenance/policies", `{"name":"x","table_name":"job_audit","schedule":"0 3 * * *"}`},
+		{http.MethodPost, "/v1/maintenance/run", `{"policy_id":"00000000-0000-0000-0000-000000000001"}`},
+		{http.MethodGet, "/v1/maintenance/config-audit", ""},
+	}
+
+	for _, tc := range tests {
+		t.Run(tc.method+" "+tc.path, func(t *testing.T) {
+			var req *http.Request
+			if tc.body != "" {
+				req = httptest.NewRequest(tc.method, tc.path, strings.NewReader(tc.body))
+				req.Header.Set("Content-Type", "application/json")
+			} else {
+				req = httptest.NewRequest(tc.method, tc.path, nil)
+			}
+			req.Header.Set("Authorization", "Bearer dev")
+			rec := httptest.NewRecorder()
+			handler.ServeHTTP(rec, req)
+			if rec.Code != http.StatusServiceUnavailable {
+				t.Fatalf("status=%d body=%s", rec.Code, rec.Body.String())
+			}
+		})
+	}
+}