fleet/server/match_err.go
2016-09-05 16:03:58 -04:00

65 lines
2.5 KiB
Go

// Copyright (c) 2009 The Go Authors. All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
// * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
package server
import (
"fmt"
"strings"
)
// matchErr is a test helper that verifies that an error is matched with an expected effor
// source:
// https://github.com/golang/go/blob/ffa2bd27a47ef16e4d6a404dd15781ed5ba21e5d/src/net/http/response_test.go#L865
// wantErr can be nil, an error value to match exactly, or type string to
// match a substring.
func matchErr(err error, wantErr interface{}) error {
if err == nil {
if wantErr == nil {
return nil
}
if sub, ok := wantErr.(string); ok {
return fmt.Errorf("unexpected success; want error with substring %q", sub)
}
return fmt.Errorf("unexpected success; want error %v", wantErr)
}
if wantErr == nil {
return fmt.Errorf("%v; want success", err)
}
if sub, ok := wantErr.(string); ok {
if strings.Contains(err.Error(), sub) {
return nil
}
return fmt.Errorf("error = %v; want an error with substring %q", err, sub)
}
if err == wantErr {
return nil
}
return fmt.Errorf("%v; want %v", err, wantErr)
}