bdf5209f68
It's common in many concurrent engines to have a situation where we collect errors on shutdown. Errors can either because a context closed, or because some engine error happened. The latter, can also cause the former, leading to a list of returned errors. In these scenarios, we want to filter out all the secondary context errors, unless that's all that's there. This provides a helper function to do so.
320 lines
8.3 KiB
Go
320 lines
8.3 KiB
Go
// Mgmt
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// Copyright (C) James Shubin and the project contributors
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// Written by James Shubin <james@shubin.ca> and the project contributors
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//
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with this program. If not, see <https://www.gnu.org/licenses/>.
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//
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// Additional permission under GNU GPL version 3 section 7
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//
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// If you modify this program, or any covered work, by linking or combining it
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// with embedded mcl code and modules (and that the embedded mcl code and
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// modules which link with this program, contain a copy of their source code in
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// the authoritative form) containing parts covered by the terms of any other
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// license, the licensors of this program grant you additional permission to
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// convey the resulting work. Furthermore, the licensors of this program grant
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// the original author, James Shubin, additional permission to update this
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// additional permission if he deems it necessary to achieve the goals of this
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// additional permission.
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//go:build !root
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package errwrap
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import (
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"context"
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"errors"
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"fmt"
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"testing"
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)
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func TestWrapfErr1(t *testing.T) {
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if err := Wrapf(nil, "whatever: %d", 42); err != nil {
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t.Errorf("expected nil result")
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}
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}
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func TestWrapfErr2(t *testing.T) {
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reterr := fmt.Errorf("reterr")
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if err := Wrapf(reterr, "whatever: %d", 42); err == nil {
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t.Errorf("expected err")
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}
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}
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func TestWrapfErr3(t *testing.T) {
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reterr := fmt.Errorf("reterr")
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if err := Wrapf(reterr, "whatever: %d", 42); !errors.Is(err, reterr) {
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t.Errorf("expected matching err")
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}
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}
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func TestAppendErr1(t *testing.T) {
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if err := Append(nil, nil); err != nil {
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t.Errorf("expected nil result")
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}
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}
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func TestAppendErr2(t *testing.T) {
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reterr := fmt.Errorf("reterr")
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if err := Append(reterr, nil); err != reterr {
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t.Errorf("expected reterr")
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}
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}
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func TestAppendErr3(t *testing.T) {
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err := fmt.Errorf("err")
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if reterr := Append(nil, err); reterr != err {
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t.Errorf("expected err")
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}
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}
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func TestJoinErr1(t *testing.T) {
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if reterr := Join(nil); reterr != nil {
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t.Errorf("expected nil result")
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}
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}
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func TestJoinErr2(t *testing.T) {
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if reterr := Join([]error{}); reterr != nil {
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t.Errorf("expected nil result")
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}
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}
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func TestJoinErr3(t *testing.T) {
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err := fmt.Errorf("err")
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if reterr := Join([]error{err}); reterr != err {
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t.Errorf("expected err")
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}
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}
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func TestJoinErr4(t *testing.T) {
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err := fmt.Errorf("err")
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if reterr := Join([]error{err, nil}); reterr != err {
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t.Errorf("expected err")
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}
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}
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func TestJoinErr5(t *testing.T) {
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err := fmt.Errorf("err")
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if reterr := Join([]error{nil, err}); reterr != err {
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t.Errorf("expected err")
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}
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}
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func TestJoinErr6(t *testing.T) {
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err1 := fmt.Errorf("err1")
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err2 := fmt.Errorf("err2")
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if reterr := Join([]error{err1, err2}); reterr.Error() != Append(err1, err2).Error() {
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t.Errorf("expected err")
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}
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}
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func TestJoinErr7(t *testing.T) {
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err1 := fmt.Errorf("err1")
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err2 := fmt.Errorf("err2")
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err3 := fmt.Errorf("err3")
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if reterr := Join([]error{err1, err2, err3}); reterr.Error() != Append(err1, Append(err2, err3)).Error() {
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t.Errorf("expected err")
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}
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if reterr := Join([]error{err1, err2, err3}); reterr.Error() != Append(Append(err1, err2), err3).Error() {
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t.Errorf("expected err")
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}
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}
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func TestJoinErr8(t *testing.T) {
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err1 := fmt.Errorf("err1")
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var err2 error // nil
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err3 := fmt.Errorf("err3")
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if reterr := Join([]error{err1, err2, err3}); reterr.Error() != Append(err1, Append(err2, err3)).Error() {
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t.Errorf("expected err")
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}
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if reterr := Join([]error{err1, err2, err3}); reterr.Error() != Append(Append(err1, err2), err3).Error() {
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t.Errorf("expected err")
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}
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}
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func TestJoinErr9(t *testing.T) {
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var err1 error // nil
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var err2 error // nil
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err3 := fmt.Errorf("err3")
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if reterr := Join([]error{err1, err2, err3}); reterr.Error() != Append(err1, Append(err2, err3)).Error() {
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t.Errorf("expected err")
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}
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if reterr := Join([]error{err1, err2, err3}); reterr.Error() != Append(Append(err1, err2), err3).Error() {
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t.Errorf("expected err")
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}
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}
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func TestJoinErr10(t *testing.T) {
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var err1 error // nil
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var err2 error // nil
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var err3 error // nil
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if reterr := Join([]error{err1, err2, err3}); reterr != nil {
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t.Errorf("expected nil result")
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}
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}
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func TestWithoutContext1(t *testing.T) {
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if reterr := WithoutContext(nil); reterr != nil {
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t.Errorf("expected nil result")
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}
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}
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func TestWithoutContext2(t *testing.T) {
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err := fmt.Errorf("err")
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if reterr := WithoutContext(err); reterr != err {
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t.Errorf("expected err")
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}
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}
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func TestWithoutContext3(t *testing.T) {
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err := context.Canceled
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if reterr := WithoutContext(err); reterr != err {
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t.Errorf("expected err")
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}
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}
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func TestWithoutContext4(t *testing.T) {
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err1 := fmt.Errorf("err")
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err2 := context.Canceled
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err := Append(err1, err2)
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if reterr := WithoutContext(err); reterr != err1 {
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t.Errorf("expected err")
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}
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}
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func TestWithoutContext5(t *testing.T) {
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err1 := context.Canceled
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err2 := fmt.Errorf("err")
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err := Append(err1, err2)
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if reterr := WithoutContext(err); reterr != err2 {
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t.Errorf("expected err")
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}
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}
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func TestWithoutContext6(t *testing.T) {
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err1 := context.Canceled
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err2 := context.Canceled
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err := Append(err1, err2)
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if reterr := WithoutContext(err); reterr != err1 {
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t.Errorf("expected err")
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}
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if reterr := WithoutContext(err); reterr != err2 {
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t.Errorf("expected err")
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}
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}
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func TestWithoutContext7(t *testing.T) {
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err1 := fmt.Errorf("err1")
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err2 := fmt.Errorf("err2")
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err := Append(err1, err2)
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if reterr := WithoutContext(err); reterr.Error() != err.Error() {
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t.Errorf("expected err")
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}
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}
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func TestWithoutContext8(t *testing.T) {
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err1 := fmt.Errorf("err1")
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err2 := fmt.Errorf("err2")
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err3 := fmt.Errorf("err3")
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err := Join([]error{err1, err2, err3})
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if reterr := WithoutContext(err); reterr.Error() != err.Error() {
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t.Errorf("expected err")
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}
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}
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func TestWithoutContext9(t *testing.T) {
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err1 := context.Canceled
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err2 := fmt.Errorf("err2")
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err3 := fmt.Errorf("err3")
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err := Join([]error{err1, err2, err3})
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exp := Join([]error{nil, err2, err3})
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if reterr := WithoutContext(err); reterr.Error() != exp.Error() {
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t.Errorf("expected err")
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}
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}
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func TestWithoutContext10(t *testing.T) {
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err1 := fmt.Errorf("err1")
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err2 := context.Canceled
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err3 := fmt.Errorf("err3")
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err := Join([]error{err1, err2, err3})
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exp := Join([]error{err1, nil, err3})
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if reterr := WithoutContext(err); reterr.Error() != exp.Error() {
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t.Errorf("expected err")
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}
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}
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func TestWithoutContext11(t *testing.T) {
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err1 := fmt.Errorf("err1")
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err2 := fmt.Errorf("err2")
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err3 := context.Canceled
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err := Join([]error{err1, err2, err3})
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exp := Join([]error{err1, err2, nil})
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if reterr := WithoutContext(err); reterr.Error() != exp.Error() {
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t.Errorf("expected err")
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}
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}
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func TestWithoutContext12(t *testing.T) {
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err1 := fmt.Errorf("err1")
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err2 := context.Canceled
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err3 := context.Canceled
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err := Join([]error{err1, err2, err3})
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if reterr := WithoutContext(err); reterr != err1 {
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t.Errorf("expected err")
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}
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}
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func TestWithoutContext13(t *testing.T) {
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err1 := context.Canceled
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err2 := fmt.Errorf("err2")
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err3 := context.Canceled
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err := Join([]error{err1, err2, err3})
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if reterr := WithoutContext(err); reterr != err2 {
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t.Errorf("expected err")
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}
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}
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func TestWithoutContext14(t *testing.T) {
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err1 := context.Canceled
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err2 := context.Canceled
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err3 := fmt.Errorf("err3")
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err := Join([]error{err1, err2, err3})
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if reterr := WithoutContext(err); reterr != err3 {
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t.Errorf("expected err")
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}
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}
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func TestWithoutContext15(t *testing.T) {
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err1 := context.Canceled
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err2 := context.Canceled
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err3 := context.Canceled
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err := Join([]error{err1, err2, err3})
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if reterr := WithoutContext(err); reterr != context.Canceled {
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t.Errorf("expected err")
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}
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}
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func TestString1(t *testing.T) {
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var err error
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if String(err) != "" {
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t.Errorf("expected empty result")
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}
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msg := "this is an error"
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if err := fmt.Errorf(msg); String(err) != msg {
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t.Errorf("expected different result")
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}
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}
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