| 1 | // Copyright 2019 The Go Authors. All rights reserved. |
|---|---|
| 2 | // Use of this source code is governed by a BSD-style |
| 3 | // license that can be found in the LICENSE file. |
| 4 | |
| 5 | // This file contains tests for the deepequalerrors checker. |
| 6 | |
| 7 | package a |
| 8 | |
| 9 | import ( |
| 10 | "io" |
| 11 | "os" |
| 12 | "reflect" |
| 13 | ) |
| 14 | |
| 15 | type myError int |
| 16 | |
| 17 | func (myError) Error() string { return "" } |
| 18 | |
| 19 | func bad() error { return nil } |
| 20 | |
| 21 | type s1 struct { |
| 22 | s2 *s2 |
| 23 | i int |
| 24 | } |
| 25 | |
| 26 | type myError2 error |
| 27 | |
| 28 | type s2 struct { |
| 29 | s1 *s1 |
| 30 | errs []*myError2 |
| 31 | } |
| 32 | |
| 33 | func hasError() { |
| 34 | var e error |
| 35 | var m myError2 |
| 36 | reflect.DeepEqual(bad(), e) // want `avoid using reflect.DeepEqual with errors` |
| 37 | reflect.DeepEqual(io.EOF, io.EOF) // want `avoid using reflect.DeepEqual with errors` |
| 38 | reflect.DeepEqual(e, &e) // want `avoid using reflect.DeepEqual with errors` |
| 39 | reflect.DeepEqual(e, m) // want `avoid using reflect.DeepEqual with errors` |
| 40 | reflect.DeepEqual(e, s1{}) // want `avoid using reflect.DeepEqual with errors` |
| 41 | reflect.DeepEqual(e, [1]error{}) // want `avoid using reflect.DeepEqual with errors` |
| 42 | reflect.DeepEqual(e, map[error]int{}) // want `avoid using reflect.DeepEqual with errors` |
| 43 | reflect.DeepEqual(e, map[int]error{}) // want `avoid using reflect.DeepEqual with errors` |
| 44 | // We catch the next not because *os.PathError implements error, but because it contains |
| 45 | // a field Err of type error. |
| 46 | reflect.DeepEqual(&os.PathError{}, io.EOF) // want `avoid using reflect.DeepEqual with errors` |
| 47 | |
| 48 | } |
| 49 | |
| 50 | func notHasError() { |
| 51 | reflect.ValueOf(4) // not reflect.DeepEqual |
| 52 | reflect.DeepEqual(3, 4) // not errors |
| 53 | reflect.DeepEqual(5, io.EOF) // only one error |
| 54 | reflect.DeepEqual(myError(1), io.EOF) // not types that implement error |
| 55 | } |
| 56 |
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