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包含main函数的gtest源文件编译为可执行程序spider，使用gtest_filter命令行参数过滤case2测试用例关联的所有测试项：
./spider --gtest_filter=case2.*
CutOneVertex为测试项（TEST(tc_linked_directiongraph, CutOneVertex)）
./spider --gtest_filter=*CutOneVertex
int main(int argc, char ****argv**) {testing::InitGoogleTest(&argc, **argv**);rc = RUN_ALL_TESTS();return rc;
}
[uxdb@localhost backend]$ ./spider --gtest_filter=tc_linked_directiongraph_5vertex_5edge_1circle.*
<<<<<<<<<<<< Running main() from spider.cc
<<<<<<<<<<<< notice - initialize uxdb master environment … done
Note: Google Test filter = tc_linked_directiongraph_5vertex_5edge_1circle.*
[==========] Running 1 test from 1 test suite.
[----------] Global test environment set-up.
[----------] 1 test from tc_linked_directiongraph_5vertex_5edge_1circle
[ RUN ] tc_linked_directiongraph_5vertex_5edge_1circle.FindPathBetweenTwoVertex
[ OK ] tc_linked_directiongraph_5vertex_5edge_1circle.FindPathBetweenTwoVertex (0 ms)
[----------] 1 test from tc_linked_directiongraph_5vertex_5edge_1circle (0 ms total)
[----------] Global test environment tear-down
[==========] 1 test from 1 test suite ran. (0 ms total)
[ PASSED ] 1 test.
其实在命令行带/？参数执行编译好的测试程序，就知道gTest这些开关：
附在下面
This program contains tests written using Google Test. You can use the
following command line flags to control its behavior:
Test Selection:
–gtest_list_tests
List the names of all tests instead of running them. The name of
TEST(Foo, Bar) is “Foo.Bar”.
–gtest_filter=POSTIVE_PATTERNS[-NEGATIVE_PATTERNS]
Run only the tests whose name matches one of the positive patterns but
none of the negative patterns.
‘?’ matches any single character;
‘*’ matches any substring;
‘:’ separates two patterns.
–gtest_also_run_disabled_tests
Run all disabled tests too.
[uxdb@localhost backend]$ ./spider /?
<<<<<<<<<<<< Running main() from spider.cc
This program contains tests written using Google Test. You can use the
following command line flags to control its behavior:
Test Selection:
–gtest_list_tests
List the names of all tests instead of running them. The name of
TEST(Foo, Bar) is “Foo.Bar”.
–gtest_filter=POSTIVE_PATTERNS[-NEGATIVE_PATTERNS]
Run only the tests whose name matches one of the positive patterns but
none of the negative patterns. ‘?’ matches any single character; ‘*’
matches any substring; ‘:’ separates two patterns.
–gtest_also_run_disabled_tests
Run all disabled tests too.
Test Execution:
–gtest_repeat=[COUNT]
Run the tests repeatedly; use a negative count to repeat forever.
–gtest_shuffle
Randomize tests’ orders on every iteration.
–gtest_random_seed=[NUMBER]
Random number seed to use for shuffling test orders (between 1 and
99999, or 0 to use a seed based on the current time).
Test Output:
–gtest_color=(yes|no|auto)
Enable/disable colored output. The default is auto.
–gtest_print_time=0
Don’t print the elapsed time of each test.
–gtest_output=(json|xml)[:DIRECTORY_PATH/|:FILE_PATH]
Generate a JSON or XML report in the given directory or with the given
file name. FILE_PATH defaults to test_detail.xml.
–gtest_stream_result_to=HOST:PORT
Stream test results to the given server.
Assertion Behavior:
–gtest_death_test_style=(fast|threadsafe)
Set the default death test style.
–gtest_break_on_failure
Turn assertion failures into debugger break-points.
–gtest_throw_on_failure
Turn assertion failures into C++ exceptions for use by an external
test framework.
–gtest_catch_exceptions=0
Do not report exceptions as test failures. Instead, allow them
to crash the program or throw a pop-up (on Windows).
Except for --gtest_list_tests, you can alternatively set the corresponding
environment variable of a flag (all letters in upper-case). For example, to
disable colored text output, you can either specify --gtest_color=no or set
the GTEST_COLOR environment variable to no.
For more information, please read the Google Test documentation at
https://github.com/google/googletest/. If you find a bug in Google Test
(not one in your own code or tests), please report it to
googletestframework@googlegroups.com.
<<<<<<<<<<<< notice - initialize uxdb master environment … done
[uxdb@localhost backend]$
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