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| 1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. |
| 2 // Use of this source code is governed by a BSD-style license that can be |
| 3 // found in the LICENSE file. |
| 4 |
| 5 #ifndef MEDIA_BASE_GMOCK_CALLBACK_SUPPORT_H_ |
| 6 #define MEDIA_BASE_GMOCK_CALLBACK_SUPPORT_H_ |
| 7 |
| 8 #include "testing/gmock/include/gmock/gmock.h" |
| 9 |
| 10 namespace media { |
| 11 |
| 12 // Matchers for base::Callback and base::Closure. |
| 13 |
| 14 MATCHER(IsNullCallback, "a null callback") { |
| 15 return (arg.is_null()); |
| 16 } |
| 17 |
| 18 MATCHER(IsNotNullCallback, "a non-null callback") { |
| 19 return (!arg.is_null()); |
| 20 } |
| 21 |
| 22 // The RunClosure<N>() action invokes Run() method on the N-th (0-based) |
| 23 // argument of the mock function. |
| 24 |
| 25 ACTION_TEMPLATE(RunClosure, |
| 26 HAS_1_TEMPLATE_PARAMS(int, k), |
| 27 AND_0_VALUE_PARAMS()) { |
| 28 ::std::tr1::get<k>(args).Run(); |
| 29 } |
| 30 |
| 31 // Various overloads for RunCallback<N>(). |
| 32 // |
| 33 // The RunCallback<N>(p1, p2, ..., p_k) action invokes Run() method on the N-th |
| 34 // (0-based) argument of the mock function, with arguments p1, p2, ..., p_k. |
| 35 // |
| 36 // Notes: |
| 37 // |
| 38 // 1. The arguments are passed by value by default. If you need to |
| 39 // pass an argument by reference, wrap it inside ByRef(). For example, |
| 40 // |
| 41 // RunCallback<1>(5, string("Hello"), ByRef(foo)) |
| 42 // |
| 43 // passes 5 and string("Hello") by value, and passes foo by reference. |
| 44 // |
| 45 // 2. If the callback takes an argument by reference but ByRef() is |
| 46 // not used, it will receive the reference to a copy of the value, |
| 47 // instead of the original value. For example, when the 0-th |
| 48 // argument of the callback takes a const string&, the action |
| 49 // |
| 50 // RunCallback<0>(string("Hello")) |
| 51 // |
| 52 // makes a copy of the temporary string("Hello") object and passes a |
| 53 // reference of the copy, instead of the original temporary object, |
| 54 // to the callback. This makes it easy for a user to define an |
| 55 // RunCallback action from temporary values and have it performed later. |
| 56 |
| 57 ACTION_TEMPLATE(RunCallback, |
| 58 HAS_1_TEMPLATE_PARAMS(int, k), |
| 59 AND_0_VALUE_PARAMS()) { |
| 60 return ::std::tr1::get<k>(args).Run(); |
| 61 } |
| 62 |
| 63 ACTION_TEMPLATE(RunCallback, |
| 64 HAS_1_TEMPLATE_PARAMS(int, k), |
| 65 AND_1_VALUE_PARAMS(p0)) { |
| 66 return ::std::tr1::get<k>(args).Run(p0); |
| 67 } |
| 68 |
| 69 ACTION_TEMPLATE(RunCallback, |
| 70 HAS_1_TEMPLATE_PARAMS(int, k), |
| 71 AND_2_VALUE_PARAMS(p0, p1)) { |
| 72 return ::std::tr1::get<k>(args).Run(p0, p1); |
| 73 } |
| 74 |
| 75 ACTION_TEMPLATE(RunCallback, |
| 76 HAS_1_TEMPLATE_PARAMS(int, k), |
| 77 AND_3_VALUE_PARAMS(p0, p1, p2)) { |
| 78 return ::std::tr1::get<k>(args).Run(p0, p1, p2); |
| 79 } |
| 80 |
| 81 ACTION_TEMPLATE(RunCallback, |
| 82 HAS_1_TEMPLATE_PARAMS(int, k), |
| 83 AND_4_VALUE_PARAMS(p0, p1, p2, p3)) { |
| 84 return ::std::tr1::get<k>(args).Run(p0, p1, p2, p3); |
| 85 } |
| 86 |
| 87 ACTION_TEMPLATE(RunCallback, |
| 88 HAS_1_TEMPLATE_PARAMS(int, k), |
| 89 AND_5_VALUE_PARAMS(p0, p1, p2, p3, p4)) { |
| 90 return ::std::tr1::get<k>(args).Run(p0, p1, p2, p3, p4); |
| 91 } |
| 92 |
| 93 ACTION_TEMPLATE(RunCallback, |
| 94 HAS_1_TEMPLATE_PARAMS(int, k), |
| 95 AND_6_VALUE_PARAMS(p0, p1, p2, p3, p4, p5)) { |
| 96 return ::std::tr1::get<k>(args).Run(p0, p1, p2, p3, p4, p5); |
| 97 } |
| 98 |
| 99 ACTION_TEMPLATE(RunCallback, |
| 100 HAS_1_TEMPLATE_PARAMS(int, k), |
| 101 AND_7_VALUE_PARAMS(p0, p1, p2, p3, p4, p5, p6)) { |
| 102 return ::std::tr1::get<k>(args).Run(p0, p1, p2, p3, p4, p5, p6); |
| 103 } |
| 104 |
| 105 } // namespace media |
| 106 |
| 107 #endif // MEDIA_BASE_GMOCK_CALLBACK_SUPPORT_H_ |
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