Use origin in validateFalse's own test

Kubernetes-commit: 4c0c2d21ea6fb2baf18619ac51e50f26e16d4545

Author: thockin

pkg/api/validate/testing.go

@@ -30,6 +30,6 @@ func FixedResult[T any](_ context.Context, op operation.Operation, fldPath *fiel
 		return nil
 	}
 	return field.ErrorList{
-		field.Invalid(fldPath, value, "forced failure: "+arg),
+		field.Invalid(fldPath, value, "forced failure: "+arg).WithOrigin("validateFalse"),
 	}
 }

pkg/api/validate/testing_test.go

@@ -121,6 +121,7 @@ func TestFixedResult(t *testing.T) {
 		pass:  true,
 	}}
 
+	matcher := field.ErrorMatcher{}.ByOrigin().ByDetailExact()
 	for i, tc := range cases {
 		result := FixedResult(context.Background(), operation.Operation{}, field.NewPath("fldpath"), tc.value, nil, tc.pass, "detail string")
 		if len(result) != 0 && tc.pass {
@@ -136,9 +137,10 @@ func TestFixedResult(t *testing.T) {
 				t.Errorf("case %d: unexepected multi-error: %v", i, fmtErrs(result))
 				continue
 			}
-			if want, got := "forced failure: detail string", result[0].Detail; got != want {
-				t.Errorf("case %d: wrong error, expected: %q, got: %q", i, want, got)
+			wantErrorList := field.ErrorList{
+				field.Invalid(field.NewPath("fldpath"), tc.value, "forced failure: detail string").WithOrigin("validateFalse"),
 			}
+			matcher.Test(t, wantErrorList, result)
 		}
 	}
 }