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mirror of https://github.com/rclone/rclone synced 2024-12-27 19:43:48 +01:00
rclone/backend/union/errors_test.go
Nick Craig-Wood 31773ecfbf union: allow errors to be unwrapped for inspection
Before this change the Errors type in the union backend produced
errors which could not be Unwrapped to test their type.

This adds the (go1.20) Unwrap method to the Errors type which allows
errors.Is to work on these errors.

It also adds unit tests for the Errors type and fixes a couple of
minor bugs thrown up in the process.

See: https://forum.rclone.org/t/failed-to-set-modification-time-1-error-pcloud-cant-set-modified-time/38596
2023-06-10 14:39:41 +01:00

95 lines
1.4 KiB
Go

//go:build go1.20
// +build go1.20
package union
import (
"errors"
"testing"
"github.com/stretchr/testify/assert"
)
var (
err1 = errors.New("Error 1")
err2 = errors.New("Error 2")
err3 = errors.New("Error 3")
)
func TestErrorsMap(t *testing.T) {
es := Errors{
nil,
err1,
err2,
}
want := Errors{
err2,
}
got := es.Map(func(e error) error {
if e == err1 {
return nil
}
return e
})
assert.Equal(t, want, got)
}
func TestErrorsFilterNil(t *testing.T) {
es := Errors{
nil,
err1,
nil,
err2,
nil,
}
want := Errors{
err1,
err2,
}
got := es.FilterNil()
assert.Equal(t, want, got)
}
func TestErrorsErr(t *testing.T) {
// Check not all nil case
es := Errors{
nil,
err1,
nil,
err2,
nil,
}
want := Errors{
err1,
err2,
}
got := es.Err()
// Check all nil case
assert.Equal(t, want, got)
es = Errors{
nil,
nil,
nil,
}
assert.Nil(t, es.Err())
}
func TestErrorsError(t *testing.T) {
assert.Equal(t, "no error", Errors{}.Error())
assert.Equal(t, "1 error: Error 1", Errors{err1}.Error())
assert.Equal(t, "1 error: nil error", Errors{nil}.Error())
assert.Equal(t, "2 errors: Error 1; Error 2", Errors{err1, err2}.Error())
}
func TestErrorsUnwrap(t *testing.T) {
es := Errors{
err1,
err2,
}
assert.Equal(t, []error{err1, err2}, es.Unwrap())
assert.True(t, errors.Is(es, err1))
assert.True(t, errors.Is(es, err2))
assert.False(t, errors.Is(es, err3))
}