1 files changed, 127 insertions, 26 deletions

diff --git a/projects/SelfTest/UsageTests/Benchmark.tests.cpp b/projects/SelfTest/UsageTests/Benchmark.tests.cpp
index ddf69504..e795ddd1 100644
--- a/projects/SelfTest/UsageTests/Benchmark.tests.cpp
+++ b/projects/SelfTest/UsageTests/Benchmark.tests.cpp
@@ -2,42 +2,143 @@
 
 #include <map>
 
-TEST_CASE( "benchmarked", "[!benchmark]" ) {
+#if defined(CATCH_CONFIG_ENABLE_BENCHMARKING)
+namespace {
+    std::uint64_t Fibonacci(std::uint64_t number) {
+        return number < 2 ? 1 : Fibonacci(number - 1) + Fibonacci(number - 2);
+    }
+}
+
+TEST_CASE("Benchmark Fibonacci", "[!benchmark]") {
+    CHECK(Fibonacci(0) == 1);
+    // some more asserts..
+    CHECK(Fibonacci(5) == 8);
+    // some more asserts..
+
+    BENCHMARK("Fibonacci 20") {
+        return Fibonacci(20);
+    };
+
+    BENCHMARK("Fibonacci 25") {
+        return Fibonacci(25);
+    };
 
+    BENCHMARK("Fibonacci 30") {
+        return Fibonacci(30);
+    };
+
+    BENCHMARK("Fibonacci 35") {
+        return Fibonacci(35);
+    };
+}
+
+TEST_CASE("Benchmark containers", "[!benchmark]") {
     static const int size = 100;
 
     std::vector<int> v;
     std::map<int, int> m;
 
-    BENCHMARK( "Load up a vector" ) {
-        v = std::vector<int>();
-        for(int i =0; i < size; ++i )
-            v.push_back( i );
-    }
-    REQUIRE( v.size() == size );
+    SECTION("without generator") {
+        BENCHMARK("Load up a vector") {
+            v = std::vector<int>();
+            for (int i = 0; i < size; ++i)
+                v.push_back(i);
+        };
+        REQUIRE(v.size() == size);
 
-    BENCHMARK( "Load up a map" ) {
-        m = std::map<int, int>();
-        for(int i =0; i < size; ++i )
-            m.insert( { i, i+1 } );
+        // test optimizer control
+        BENCHMARK("Add up a vector's content") {
+            uint64_t add = 0;
+            for (int i = 0; i < size; ++i)
+                add += v[i];
+            return add;
+        };
+
+        BENCHMARK("Load up a map") {
+            m = std::map<int, int>();
+            for (int i = 0; i < size; ++i)
+                m.insert({ i, i + 1 });
+        };
+        REQUIRE(m.size() == size);
+
+        BENCHMARK("Reserved vector") {
+            v = std::vector<int>();
+            v.reserve(size);
+            for (int i = 0; i < size; ++i)
+                v.push_back(i);
+        };
+        REQUIRE(v.size() == size);
+
+        BENCHMARK("Resized vector") {
+            v = std::vector<int>();
+            v.resize(size);
+            for (int i = 0; i < size; ++i)
+                v[i] = i;
+        };
+        REQUIRE(v.size() == size);
+
+        int array[size];
+        BENCHMARK("A fixed size array that should require no allocations") {
+            for (int i = 0; i < size; ++i)
+                array[i] = i;
+        };
+        int sum = 0;
+        for (int i = 0; i < size; ++i)
+            sum += array[i];
+        REQUIRE(sum > size);
+
+        SECTION("XYZ") {
+
+            BENCHMARK_ADVANCED("Load up vector with chronometer")(Catch::Benchmark::Chronometer meter) {
+                std::vector<int> k;
+                meter.measure([&](int idx) {
+                    k = std::vector<int>();
+                    for (int i = 0; i < size; ++i)
+                        k.push_back(idx);
+                });
+                REQUIRE(k.size() == size);
+            };
+
+            int runs = 0;
+            BENCHMARK("Fill vector indexed", benchmarkIndex) {
+                v = std::vector<int>();
+                v.resize(size);
+                for (int i = 0; i < size; ++i)
+                    v[i] = benchmarkIndex;
+                runs = benchmarkIndex;
+            };
+
+            for (size_t i = 0; i < v.size(); ++i) {
+                REQUIRE(v[i] == runs);
+            }
+        }
     }
-    REQUIRE( m.size() == size );
 
-    BENCHMARK( "Reserved vector" ) {
-        v = std::vector<int>();
-        v.reserve(size);
-        for(int i =0; i < size; ++i )
-            v.push_back( i );
+    SECTION("with generator") {
+        auto generated = GENERATE(range(0, 10));
+        BENCHMARK("Fill vector generated") {
+            v = std::vector<int>();
+            v.resize(size);
+            for (int i = 0; i < size; ++i)
+                v[i] = generated;
+        };
+        for (size_t i = 0; i < v.size(); ++i) {
+            REQUIRE(v[i] == generated);
+        }
     }
-    REQUIRE( v.size() == size );
 
-    int array[size];
-    BENCHMARK( "A fixed size array that should require no allocations" ) {
-        for(int i =0; i < size; ++i )
-            array[i] = i;
+    SECTION("construct and destroy example") {
+        BENCHMARK_ADVANCED("construct")(Catch::Benchmark::Chronometer meter) {
+            std::vector<Catch::Benchmark::storage_for<std::string>> storage(meter.runs());
+            meter.measure([&](int i) { storage[i].construct("thing"); });
+        };
+
+        BENCHMARK_ADVANCED("destroy")(Catch::Benchmark::Chronometer meter) {
+            std::vector<Catch::Benchmark::destructable_object<std::string>> storage(meter.runs());
+            for(auto&& o : storage)
+                o.construct("thing");
+            meter.measure([&](int i) { storage[i].destruct(); });
+        };
     }
-    int sum = 0;
-    for(int i =0; i < size; ++i )
-        sum += array[i];
-    REQUIRE( sum > size );
 }
+#endif // CATCH_CONFIG_ENABLE_BENCHMARKING