Fix field path in error message for HTTPRoute path validation (#587)

Bug was introduced in 52fab05

Author: pleshakov

internal/state/graph/httproute.go

@@ -524,12 +524,12 @@ func validatePathMatch(
 	}
 
 	if *path.Type != v1beta1.PathMatchPathPrefix {
-		valErr := field.NotSupported(fieldPath, *path.Type, []string{string(v1beta1.PathMatchPathPrefix)})
+		valErr := field.NotSupported(fieldPath.Child("type"), *path.Type, []string{string(v1beta1.PathMatchPathPrefix)})
 		allErrs = append(allErrs, valErr)
 	}
 
 	if err := validator.ValidatePathInPrefixMatch(*path.Value); err != nil {
-		valErr := field.Invalid(fieldPath, *path.Value, err.Error())
+		valErr := field.Invalid(fieldPath.Child("value"), *path.Value, err.Error())
 		allErrs = append(allErrs, valErr)
 	}
 

internal/state/graph/httproute_test.go

@@ -520,7 +520,7 @@ func TestBuildRoute(t *testing.T) {
 				},
 				Conditions: []conditions.Condition{
 					conditions.NewRouteUnsupportedValue(
-						`All rules are invalid: spec.rules[0].matches[0].path: Invalid value: "/invalid": invalid path`,
+						`All rules are invalid: spec.rules[0].matches[0].path.value: Invalid value: "/invalid": invalid path`,
 					),
 				},
 				Rules: []Rule{
@@ -581,7 +581,7 @@ func TestBuildRoute(t *testing.T) {
 				Conditions: []conditions.Condition{
 					conditions.NewTODO(
 						`Some rules are invalid: ` +
-							`[spec.rules[0].matches[0].path: Invalid value: "/invalid": invalid path, ` +
+							`[spec.rules[0].matches[0].path.value: Invalid value: "/invalid": invalid path, ` +
 							`spec.rules[1].filters[0].requestRedirect.hostname: Invalid value: ` +
 							`"invalid.example.com": invalid hostname]`,
 					),