Unwrap network errors (#10934)
Alternative to #10927 Instead of having an upstream fix, do unwrap when checking network errors. 'As' will also work when destination is an interface as checked by the tests.master
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/* |
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* MinIO Cloud Storage, (C) 2020 MinIO, Inc. |
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* |
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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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* |
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* http://www.apache.org/licenses/LICENSE-2.0
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* |
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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 rest |
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import ( |
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"errors" |
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"net" |
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"net/url" |
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"testing" |
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) |
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func TestNetworkError_Unwrap(t *testing.T) { |
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tests := []struct { |
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name string |
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err error |
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target interface{} |
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want bool |
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}{ |
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{ |
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name: "url.Error", |
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err: &url.Error{Op: "PUT", URL: "http://localhost/1234", Err: restError("remote server offline")}, |
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target: &url.Error{}, |
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want: true, |
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}, |
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{ |
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name: "net.Error", |
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err: &url.Error{Op: "PUT", URL: "http://localhost/1234", Err: restError("remote server offline")}, |
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want: true, |
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}, |
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{ |
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name: "net.Error-unmatched", |
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err: errors.New("something"), |
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want: false, |
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}, |
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} |
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for _, tt := range tests { |
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t.Run(tt.name, func(t *testing.T) { |
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// Wrap error
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n := &NetworkError{ |
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Err: tt.err, |
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} |
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if tt.target == nil { |
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var netErrInterface net.Error |
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if errors.As(n, &netErrInterface) != tt.want { |
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t.Errorf("errors.As(n, &tt.target) != tt.want, n: %#v, target: %#v, want:%v, got: %v", n, tt.target, tt.want, !tt.want) |
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} |
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} else { |
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if errors.As(n, &tt.target) != tt.want { |
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t.Errorf("errors.As(n, &tt.target) != tt.want, n: %#v, target: %#v, want:%v, got: %v", n, tt.target, tt.want, !tt.want) |
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} |
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} |
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}) |
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} |
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} |
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