fix bug in var jsonpath selection

assertions.go

@@ -10,6 +10,7 @@ import (
 	"errors"
 	"fmt"
 	"net/http"
+	"os"
 	"strings"
 
 	"github.com/gdt-dev/core/api"
@@ -397,12 +398,36 @@ func (a *assertions) jsonOK(ctx context.Context) bool {
 	if exp.JSON != nil && a.hasSubject() {
 		var err error
 		var b []byte
-		res, ok := a.r.(*unstructured.Unstructured)
-		if ok {
-			if b, err = json.Marshal(res); err != nil {
-				panic("unable to marshal unstructured.Unstructured")
+		switch a.r.(type) {
+		case *unstructured.Unstructured:
+			res := a.r.(*unstructured.Unstructured)
+			if b, err = json.Marshal(res.Object); err != nil {
+				fmt.Fprintf(
+					os.Stderr,
+					"unable to marshal unstructured.Unstructured: %s\n",
+					err,
+				)
+				return false
+			}
+		case *unstructured.UnstructuredList:
+			res := a.r.(*unstructured.UnstructuredList)
+			a := make([]any, len(res.Items))
+			for x, item := range res.Items {
+				a[x] = item.Object
 			}
+			if b, err = json.Marshal(a); err != nil {
+				fmt.Fprintf(
+					os.Stderr, "unable to marshal []any: %s\n", err,
+				)
+				return false
+			}
+		default:
+			fmt.Fprintf(
+				os.Stderr, "unsupported type %T for JSON assertion\n", a.r,
+			)
+			return false
 		}
+
 		ja := gdtjson.New(exp.JSON, b)
 		if !ja.OK(ctx) {
 			for _, f := range ja.Failures() {

testdata/json.yaml

@@ -25,6 +25,20 @@ tests:
           $.metadata.uid: uuid4
           $.metadata.creationTimestamp: date-time
 
+  - name: deployment-json-assertions-list
+    timeout:
+      after: 20s
+    kube:
+      get:
+        type: deployments
+        labels:
+          app: nginx
+    assert:
+      len: 1
+      json:
+        paths:
+          $[0].spec.replicas: 2
+
   - name: delete-deployment
     kube:
       delete: deployments/nginx

var.go

@@ -54,7 +54,7 @@ func extractFrom(path string, out any) (any, error) {
 	case *unstructured.Unstructured:
 		normalized = out.Object
 	case *unstructured.UnstructuredList:
-		results := make([]map[string]any, len(out.Items))
+		results := make([]any, len(out.Items))
 		for x, item := range out.Items {
 			results[x] = item.Object
 		}