mirror of
https://github.com/ceph/ceph-csi.git
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72 lines
1.9 KiB
Go
72 lines
1.9 KiB
Go
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/*
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Copyright 2020 ceph-csi authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package util
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import (
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"errors"
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"fmt"
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"testing"
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)
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var (
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errFoo = errors.New("foo")
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errBar = errors.New("bar")
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)
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func wrapError(e error) error {
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return fmt.Errorf("w{%w}", e)
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}
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func TestJoinErrors(t *testing.T) {
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assertErrorIs := func(e1, e2 error, ok bool) {
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if errors.Is(e1, e2) != ok {
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t.Errorf("errors.Is(e1, e2) != %v - e1: %#v - e2: %#v", ok, e1, e2)
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}
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}
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assertErrorIs(errFoo, errBar, false)
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assertErrorIs(errFoo, errFoo, true)
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fooBar := JoinErrors(errFoo, errBar)
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assertErrorIs(fooBar, errFoo, true)
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assertErrorIs(fooBar, errBar, true)
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w2Foo := wrapError(wrapError(errFoo))
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w1Bar := wrapError(errBar)
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w1w2Foow1Bar := wrapError(JoinErrors(w2Foo, w1Bar))
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assertErrorIs(w1w2Foow1Bar, errFoo, true)
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assertErrorIs(w1w2Foow1Bar, errBar, true)
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w2X := wrapError(wrapError(errors.New("x")))
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w2FooBar := wrapError(wrapError(fooBar))
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w1w2Xw2FooBar := wrapError(JoinErrors(w2X, w2FooBar))
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assertErrorIs(w1w2Xw2FooBar, errFoo, true)
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assertErrorIs(w1w2Xw2FooBar, errBar, true)
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x := errors.Unwrap(errors.Unwrap(errors.Unwrap(errors.Unwrap(w1w2Xw2FooBar))))
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assertErrorIs(x, fooBar, true)
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x = errors.Unwrap(x)
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assertErrorIs(x, fooBar, false)
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assertErrorIs(x, errFoo, false)
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assertErrorIs(x, errBar, true)
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s1 := "w{w{w{x}}: w{w{foo: bar}}}"
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s2 := w1w2Xw2FooBar.Error()
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if s1 != s2 {
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t.Errorf("%s != %s", s1, s2)
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}
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}
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