File
Blob: src/workerd/jsg/macro-meta-test.c++
| 1 | // Copyright (c) 2017-2022 Cloudflare, Inc. |
| 2 | // Licensed under the Apache 2.0 license found in the LICENSE file or at: |
| 3 | // https://opensource.org/licenses/Apache-2.0 |
| 4 | |
| 5 | #include "macro-meta.h" |
| 6 | |
| 7 | #include <kj/test.h> |
| 8 | |
| 9 | namespace workerd::jsg { |
| 10 | namespace { |
| 11 | |
| 12 | static_assert(JSG_IF_NONEMPTY(abcd, 123) == 123); |
| 13 | static_assert(JSG_IF_NONEMPTY(, abcd) true); |
| 14 | |
| 15 | template <typename... T> |
| 16 | constexpr int sum(T... args) { |
| 17 | return (args + ...); |
| 18 | } |
| 19 | |
| 20 | #define JSG_TEST_FOR_EACH_OP(op, x) (2 op x) |
| 21 | static_assert(JSG_FOR_EACH(JSG_TEST_FOR_EACH_OP, *) true); |
| 22 | static_assert(sum(JSG_FOR_EACH(JSG_TEST_FOR_EACH_OP, *, 1, 2, 3, 4)) == 20); |
| 23 | |
| 24 | static_assert(sum(JSG_FOR_EACH(JSG_TEST_FOR_EACH_OP, |
| 25 | *, |
| 26 | 1, |
| 27 | 2, |
| 28 | 3, |
| 29 | 4, |
| 30 | 5, |
| 31 | 6, |
| 32 | 7, |
| 33 | 8, |
| 34 | 1, |
| 35 | 2, |
| 36 | 3, |
| 37 | 4, |
| 38 | 5, |
| 39 | 6, |
| 40 | 7, |
| 41 | 8, |
| 42 | 1, |
| 43 | 2, |
| 44 | 3, |
| 45 | 4, |
| 46 | 5, |
| 47 | 6, |
| 48 | 7, |
| 49 | 8, |
| 50 | 1, |
| 51 | 2, |
| 52 | 3, |
| 53 | 4, |
| 54 | 5, |
| 55 | 6, |
| 56 | 7, |
| 57 | 8)) == 36 * 2 * 4); |
| 58 | #undef JSG_TEST_FOR_EACH_OP |
| 59 | |
| 60 | KJ_TEST("macro meta") { |
| 61 | // Nothing to actually do here; tests are compile-time |
| 62 | } |
| 63 | |
| 64 | } // namespace |
| 65 | } // namespace workerd::jsg |