chore: import upstream snapshot with attribution

test/filter_test.cc

@@ -0,0 +1,122 @@
+#include <algorithm>
+#include <cassert>
+#include <cmath>
+#include <cstdint>
+#include <cstdlib>
+#include <iostream>
+#include <limits>
+#include <sstream>
+#include <string>
+
+#include "benchmark/benchmark_api.h"
+#include "benchmark/registration.h"
+#include "benchmark/reporter.h"
+#include "benchmark/state.h"
+
+namespace {
+
+class TestReporter : public benchmark::ConsoleReporter {
+ public:
+  bool ReportContext(const Context& context) override {
+    return ConsoleReporter::ReportContext(context);
+  };
+
+  void ReportRuns(const std::vector<Run>& report) override {
+    ++count_;
+    max_family_index_ = std::max(max_family_index_, report[0].family_index);
+    ConsoleReporter::ReportRuns(report);
+  };
+
+  TestReporter() : count_(0), max_family_index_(0) {}
+
+  ~TestReporter() override {}
+
+  int GetCount() const { return count_; }
+
+  int64_t GetMaxFamilyIndex() const { return max_family_index_; }
+
+ private:
+  mutable int count_;
+  mutable int64_t max_family_index_;
+};
+
+void NoPrefix(benchmark::State& state) {
+  for (auto _ : state) {
+  }
+}
+BENCHMARK(NoPrefix);
+
+void BM_Foo(benchmark::State& state) {
+  for (auto _ : state) {
+  }
+}
+BENCHMARK(BM_Foo);
+
+void BM_Bar(benchmark::State& state) {
+  for (auto _ : state) {
+  }
+}
+BENCHMARK(BM_Bar);
+
+void BM_FooBar(benchmark::State& state) {
+  for (auto _ : state) {
+  }
+}
+BENCHMARK(BM_FooBar);
+
+void BM_FooBa(benchmark::State& state) {
+  for (auto _ : state) {
+  }
+}
+BENCHMARK(BM_FooBa);
+}  // end namespace
+
+int main(int argc, char** argv) {
+  benchmark::MaybeReenterWithoutASLR(argc, argv);
+
+  bool list_only = false;
+  for (int i = 0; i < argc; ++i) {
+    list_only |= std::string(argv[i]).find("--benchmark_list_tests") !=
+                 std::string::npos;
+  }
+
+  benchmark::Initialize(&argc, argv);
+
+  TestReporter test_reporter;
+  const int64_t returned_count =
+      static_cast<int64_t>(benchmark::RunSpecifiedBenchmarks(&test_reporter));
+
+  if (argc == 2) {
+    // Make sure we ran all of the tests
+    std::stringstream ss(argv[1]);
+    int64_t expected_return = 0;
+    ss >> expected_return;
+
+    if (returned_count != expected_return) {
+      std::cerr << "ERROR: Expected " << expected_return
+                << " tests to match the filter but returned_count = "
+                << returned_count << '\n';
+      return -1;
+    }
+
+    const int64_t expected_reports = list_only ? 0 : expected_return;
+    const int64_t reports_count = test_reporter.GetCount();
+    if (reports_count != expected_reports) {
+      std::cerr << "ERROR: Expected " << expected_reports
+                << " tests to be run but reported_count = " << reports_count
+                << '\n';
+      return -1;
+    }
+
+    const int64_t max_family_index = test_reporter.GetMaxFamilyIndex();
+    const int64_t num_families = reports_count == 0 ? 0 : 1 + max_family_index;
+    if (num_families != expected_reports) {
+      std::cerr << "ERROR: Expected " << expected_reports
+                << " test families to be run but num_families = "
+                << num_families << '\n';
+      return -1;
+    }
+  }
+
+  return 0;
+}