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| 1 // Copyright 2009 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 package exception | |
| 6 | |
| 7 import "testing" | |
| 8 | |
| 9 func TestNoException(t *testing.T) { | |
| 10 e := Try(func(throw Handler) {}) | |
| 11 if e != nil { | |
| 12 t.Fatalf("no exception expected, found: %v", e) | |
| 13 } | |
| 14 } | |
| 15 | |
| 16 | |
| 17 func TestNilException(t *testing.T) { | |
| 18 e := Try(func(throw Handler) { throw(nil) }) | |
| 19 if e == nil { | |
| 20 t.Fatalf("exception expected", e) | |
| 21 } | |
| 22 if e.Value != nil { | |
| 23 t.Fatalf("nil exception expected, found: %v", e) | |
| 24 } | |
| 25 } | |
| 26 | |
| 27 | |
| 28 func TestTry(t *testing.T) { | |
| 29 s := 0 | |
| 30 for i := 1; i <= 10; i++ { | |
| 31 e := Try(func(throw Handler) { | |
| 32 if i%3 == 0 { | |
| 33 throw(i) | |
| 34 panic("throw returned") | |
| 35 } | |
| 36 }) | |
| 37 if e != nil { | |
| 38 s += e.Value.(int) | |
| 39 } | |
| 40 } | |
| 41 result := 3 + 6 + 9 | |
| 42 if s != result { | |
| 43 t.Fatalf("expected: %d, found: %d", result, s) | |
| 44 } | |
| 45 } | |
| 46 | |
| 47 | |
| 48 func TestCatch(t *testing.T) { | |
| 49 s := 0 | |
| 50 for i := 1; i <= 10; i++ { | |
| 51 Try(func(throw Handler) { | |
| 52 if i%3 == 0 { | |
| 53 throw(i) | |
| 54 } | |
| 55 }).Catch(func(x interface{}) { s += x.(int) }) | |
| 56 } | |
| 57 result := 3 + 6 + 9 | |
| 58 if s != result { | |
| 59 t.Fatalf("expected: %d, found: %d", result, s) | |
| 60 } | |
| 61 } | |
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