| 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 errorsas checker. |
| 6 | |
| 7 | package a |
| 8 | |
| 9 | import "errors" |
| 10 | |
| 11 | type myError int |
| 12 | |
| 13 | func (myError) Error() string { return "" } |
| 14 | |
| 15 | func perr() *error { return nil } |
| 16 | |
| 17 | type iface interface { |
| 18 | m() |
| 19 | } |
| 20 | |
| 21 | func two() (error, interface{}) { return nil, nil } |
| 22 | |
| 23 | func _() { |
| 24 | var ( |
| 25 | e error |
| 26 | m myError |
| 27 | i int |
| 28 | f iface |
| 29 | ei interface{} |
| 30 | ) |
| 31 | errors.As(nil, &e) // want `second argument to errors.As should not be \*error` |
| 32 | errors.As(nil, &m) // *T where T implemements error |
| 33 | errors.As(nil, &f) // *interface |
| 34 | errors.As(nil, perr()) // want `second argument to errors.As should not be \*error` |
| 35 | errors.As(nil, ei) // empty interface |
| 36 | |
| 37 | errors.As(nil, nil) // want `second argument to errors.As must be a non-nil pointer to either a type that implements error, or to any interface type` |
| 38 | errors.As(nil, e) // want `second argument to errors.As must be a non-nil pointer to either a type that implements error, or to any interface type` |
| 39 | errors.As(nil, m) // want `second argument to errors.As must be a non-nil pointer to either a type that implements error, or to any interface type` |
| 40 | errors.As(nil, f) // want `second argument to errors.As must be a non-nil pointer to either a type that implements error, or to any interface type` |
| 41 | errors.As(nil, &i) // want `second argument to errors.As must be a non-nil pointer to either a type that implements error, or to any interface type` |
| 42 | errors.As(two()) |
| 43 | } |
| 44 |