mtklein | 4a9426f | 2015-03-31 14:24:27 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2015 Google Inc. |
| 3 | * |
| 4 | * Use of this source code is governed by a BSD-style license that can be |
| 5 | * found in the LICENSE file. |
| 6 | */ |
| 7 | |
| 8 | #include "SkFunction.h" |
| 9 | #include "Test.h" |
| 10 | |
| 11 | static void test_add_five(skiatest::Reporter* r, SkFunction<int(int)>&& f) { |
mtklein | 97312d0 | 2015-04-01 08:11:16 -0700 | [diff] [blame] | 12 | REPORTER_ASSERT(r, f(3) == 8); |
mtklein | 4a9426f | 2015-03-31 14:24:27 -0700 | [diff] [blame] | 13 | REPORTER_ASSERT(r, f(4) == 9); |
| 14 | } |
| 15 | |
| 16 | static int add_five(int x) { return x + 5; } |
| 17 | |
| 18 | struct AddFive { |
| 19 | int operator()(int x) { return x + 5; }; |
| 20 | }; |
| 21 | |
mtklein | 03e5161 | 2015-04-01 13:08:50 -0700 | [diff] [blame] | 22 | class MoveOnlyAdd5 : SkNoncopyable { |
| 23 | public: |
| 24 | MoveOnlyAdd5() {} |
| 25 | MoveOnlyAdd5(MoveOnlyAdd5&&) {} |
| 26 | MoveOnlyAdd5& operator=(MoveOnlyAdd5&&) { return *this; } |
| 27 | |
| 28 | int operator()(int x) { return x + 5; } |
| 29 | }; |
| 30 | |
mtklein | 4a9426f | 2015-03-31 14:24:27 -0700 | [diff] [blame] | 31 | DEF_TEST(Function, r) { |
| 32 | // We should be able to turn a static function, an explicit functor, or a lambda |
| 33 | // all into an SkFunction equally well. |
mtklein | 03e5161 | 2015-04-01 13:08:50 -0700 | [diff] [blame] | 34 | test_add_five(r, &add_five); |
| 35 | test_add_five(r, AddFive()); |
| 36 | test_add_five(r, [](int x) { return x + 5; }); |
mtklein | 97312d0 | 2015-04-01 08:11:16 -0700 | [diff] [blame] | 37 | |
| 38 | // AddFive and the lambda above are both small enough to test small-object optimization. |
| 39 | // Now test a lambda that's much too large for the small-object optimization. |
| 40 | int a = 1, b = 1, c = 1, d = 1, e = 1; |
mtklein | 03e5161 | 2015-04-01 13:08:50 -0700 | [diff] [blame] | 41 | test_add_five(r, [&](int x) { return x + a + b + c + d + e; }); |
mtklein | 7441527 | 2015-04-01 11:26:31 -0700 | [diff] [blame] | 42 | |
| 43 | // Makes sure we forward the functor when constructing SkFunction. |
mtklein | 03e5161 | 2015-04-01 13:08:50 -0700 | [diff] [blame] | 44 | test_add_five(r, MoveOnlyAdd5()); |
mtklein | 7441527 | 2015-04-01 11:26:31 -0700 | [diff] [blame] | 45 | |
| 46 | // Makes sure we forward arguments when calling SkFunction. |
mtklein | b41f057 | 2015-04-01 13:36:23 -0700 | [diff] [blame] | 47 | SkFunction<int(int, MoveOnlyAdd5&&, int)> f([](int x, MoveOnlyAdd5&& addFive, int y) { |
| 48 | return x * addFive(y); |
| 49 | }); |
| 50 | REPORTER_ASSERT(r, f(2, MoveOnlyAdd5(), 4) == 18); |
mtklein | 7441527 | 2015-04-01 11:26:31 -0700 | [diff] [blame] | 51 | } |