mirror of https://github.com/grpc/grpc.git
The C based gRPC (C++, Python, Ruby, Objective-C, PHP, C#)
https://grpc.io/
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
52 lines
2.2 KiB
52 lines
2.2 KiB
## C++ tests on iOS |
|
|
|
[GTMGoogleTestRunner](https://github.com/google/google-toolbox-for-mac/blob/master/UnitTesting/GTMGoogleTestRunner.mm) is used to convert googletest cases to XCTest that can be run on iOS. GTMGoogleTestRunner doesn't execute the `main` function, so we can't have any test logic in `main`. |
|
However, it's ok to call `::testing::InitGoogleTest` in `main`, as `GTMGoogleTestRunner` [calls InitGoogleTest](https://github.com/google/google-toolbox-for-mac/blob/master/UnitTesting/GTMGoogleTestRunner.mm#L151). |
|
`grpc::testing::TestEnvironment` can also be called from `main`, as it does some test initialization (install crash handler, seed RNG) that's not strictly required to run testcases on iOS. |
|
|
|
|
|
## Porting exising C++ tests to run on iOS |
|
|
|
Please follow these guidelines when porting tests to run on iOS: |
|
|
|
- Tests need to use the googletest framework |
|
- Any setup/teardown code in `main` needs to be moved to `SetUpTestCase`/`TearDownTestCase`, and `TEST` needs to be changed to `TEST_F`. |
|
- [Death tests](https://github.com/google/googletest/blob/master/googletest/docs/advanced.md#death-tests) are not supported on iOS, so use the `*_IF_SUPPORTED()` macros to ensure that your code compiles on iOS. |
|
|
|
For example, the following test |
|
```c++ |
|
TEST(MyTest, TestOne) { |
|
ASSERT_DEATH(ThisShouldDie(), ""); |
|
} |
|
|
|
int main(int argc, char** argv) { |
|
grpc::testing::TestEnvironment env(&argc, argv); |
|
::testing::InitGoogleTest(&argc, argv); |
|
grpc_init(); |
|
return RUN_ALL_TESTS(); |
|
grpc_shutdown(); |
|
} |
|
``` |
|
|
|
should be changed to |
|
```c++ |
|
class MyTest : public ::testing::Test { |
|
protected: |
|
static void SetUpTestCase() { grpc_init(); } |
|
static void TearDownTestCase() { grpc_shutdown(); } |
|
}; |
|
|
|
TEST_F(MyTest, TestOne) { |
|
ASSERT_DEATH_IF_SUPPORTED(ThisShouldDie(), ""); |
|
} |
|
|
|
int main(int argc, char** argv) { |
|
grpc::testing::TestEnvironment env(&argc, argv); |
|
::testing::InitGoogleTest(&argc, argv); |
|
return RUN_ALL_TESTS(); |
|
} |
|
``` |
|
|
|
## Limitations |
|
|
|
Due to a [limitation](https://github.com/google/google-toolbox-for-mac/blob/master/UnitTesting/GTMGoogleTestRunner.mm#L48-L56) in GTMGoogleTestRunner, `SetUpTestCase`/`TeardownTestCase` will be called before/after *every* individual test case, similar to `SetUp`/`TearDown`.
|
|
|