Check the number of benchmark tests ran

test/CMakeLists.txt

 # Demonstration executable
 add_executable(benchmark_test benchmark_test.cc)
 target_link_libraries(benchmark_test benchmark ${CMAKE_THREAD_LIBS_INIT})
-add_test(benchmark benchmark_test)
+add_test(benchmark benchmark_test 50)
+add_test(benchmark_filter_simple benchmark_test --benchmark_filter=Calculate 16)
+add_test(benchmark_filter_prefix benchmark_test --benchmark_filter=*Calculate 0)
+add_test(benchmark_filter_suffix benchmark_test --benchmark_filter=Calculate* 16)
+add_test(benchmark_filter_both benchmark_test --benchmark_filter=*Calculate* 0)
+add_test(benchmark_filter_regex_wildcard benchmark_test --benchmark_filter=.*Calculate.* 16)
 
 # Test harness for regex wrapper
 add_executable(re_test ${RE_FILES} "re_test.cc")

test/benchmark_test.cc

@@ -10,6 +10,7 @@
 #include <mutex>
 #include <set>
 #include <sstream>
+#include <string>
 #include <vector>
 
 namespace {
@@ -141,12 +142,45 @@ static void BM_LongTest(benchmark::State& state) {
 }
 BENCHMARK(BM_LongTest)->Range(1<<16,1<<28);
 
+class TestReporter : public benchmark::internal::ConsoleReporter {
+ public:
+  virtual bool ReportContext(const Context& context) const {
+    return ConsoleReporter::ReportContext(context);
+  };
+
+  virtual void ReportRuns(const std::vector<Run>& report) const {
+    ++count_;
+    ConsoleReporter::ReportRuns(report);
+  };
+
+  TestReporter() : count_(0) {}
+
+  virtual ~TestReporter() {}
+
+  int GetCount() const {
+    return count_;
+  }
+
+ private:
+  mutable size_t count_;
+};
+
 int main(int argc, const char* argv[]) {
   benchmark::Initialize(&argc, argv);
 
   CHECK(Factorial(8) == 40320);
   CHECK(CalculatePi(1) == 0.0);
 
-  benchmark::RunSpecifiedBenchmarks();
+  TestReporter test_reporter;
+  benchmark::RunSpecifiedBenchmarks(&test_reporter);
+
+  // Make sure we ran all of the tests
+  const size_t count = test_reporter.GetCount();
+  const size_t expected = (argc == 2) ? std::stoul(argv[1]) : count;
+  if (count != expected) {
+    std::cerr << "ERROR: Expected " << expected << " tests to be ran but only "
+              << count << " completed" << std::endl;
+    return -1;
+  }
 }