mirror of
https://codeberg.org/forgejo/forgejo.git
synced 2024-12-26 20:27:03 +01:00
74 lines
2 KiB
Go
74 lines
2 KiB
Go
// Copyright 2011 Aaron Jacobs. All Rights Reserved.
|
|
// Author: aaronjjacobs@gmail.com (Aaron Jacobs)
|
|
//
|
|
// Licensed under the Apache License, Version 2.0 (the "License");
|
|
// you may not use this file except in compliance with the License.
|
|
// You may obtain a copy of the License at
|
|
//
|
|
// http://www.apache.org/licenses/LICENSE-2.0
|
|
//
|
|
// Unless required by applicable law or agreed to in writing, software
|
|
// distributed under the License is distributed on an "AS IS" BASIS,
|
|
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
// See the License for the specific language governing permissions and
|
|
// limitations under the License.
|
|
|
|
package oglematchers
|
|
|
|
import (
|
|
"errors"
|
|
"fmt"
|
|
"reflect"
|
|
)
|
|
|
|
// Panics matches zero-arg functions which, when invoked, panic with an error
|
|
// that matches the supplied matcher.
|
|
//
|
|
// NOTE(jacobsa): This matcher cannot detect the case where the function panics
|
|
// using panic(nil), by design of the language. See here for more info:
|
|
//
|
|
// http://goo.gl/9aIQL
|
|
//
|
|
func Panics(m Matcher) Matcher {
|
|
return &panicsMatcher{m}
|
|
}
|
|
|
|
type panicsMatcher struct {
|
|
wrappedMatcher Matcher
|
|
}
|
|
|
|
func (m *panicsMatcher) Description() string {
|
|
return "panics with: " + m.wrappedMatcher.Description()
|
|
}
|
|
|
|
func (m *panicsMatcher) Matches(c interface{}) (err error) {
|
|
// Make sure c is a zero-arg function.
|
|
v := reflect.ValueOf(c)
|
|
if v.Kind() != reflect.Func || v.Type().NumIn() != 0 {
|
|
err = NewFatalError("which is not a zero-arg function")
|
|
return
|
|
}
|
|
|
|
// Call the function and check its panic error.
|
|
defer func() {
|
|
if e := recover(); e != nil {
|
|
err = m.wrappedMatcher.Matches(e)
|
|
|
|
// Set a clearer error message if the matcher said no.
|
|
if err != nil {
|
|
wrappedClause := ""
|
|
if err.Error() != "" {
|
|
wrappedClause = ", " + err.Error()
|
|
}
|
|
|
|
err = errors.New(fmt.Sprintf("which panicked with: %v%s", e, wrappedClause))
|
|
}
|
|
}
|
|
}()
|
|
|
|
v.Call([]reflect.Value{})
|
|
|
|
// If we get here, the function didn't panic.
|
|
err = errors.New("which didn't panic")
|
|
return
|
|
}
|