First Commit

externals/teakra/tests/timer.cpp

@@ -0,0 +1,224 @@
+#include <catch.hpp>
+#include "../src/timer.h"
+
+struct TimerTestEnvironment {
+    Teakra::CoreTiming core_timing;
+    Teakra::Timer timer{core_timing};
+    int interrupt_counter = 0;
+    TimerTestEnvironment() {
+        timer.SetInterruptHandler([&]() { interrupt_counter++; });
+    }
+};
+
+TEST_CASE("Single mode", "[timer]") {
+    TimerTestEnvironment env;
+    env.timer.count_mode = Teakra::Timer::CountMode::Single;
+    env.timer.update_mmio = 1;
+    env.timer.start_low = 5;
+    env.timer.start_high = 0;
+    env.timer.Restart();
+
+    REQUIRE(env.timer.counter_low == 5);
+    REQUIRE(env.timer.counter_high == 0);
+    REQUIRE(env.interrupt_counter == 0);
+    REQUIRE(env.timer.GetMaxSkip() == 4);
+
+    env.timer.Tick();
+    env.timer.Tick();
+
+    REQUIRE(env.timer.counter_low == 3);
+    REQUIRE(env.timer.counter_high == 0);
+    REQUIRE(env.interrupt_counter == 0);
+    REQUIRE(env.timer.GetMaxSkip() == 2);
+
+    env.timer.Skip(2);
+    REQUIRE(env.timer.counter_low == 1);
+    REQUIRE(env.timer.counter_high == 0);
+    REQUIRE(env.interrupt_counter == 0);
+    REQUIRE(env.timer.GetMaxSkip() == 0);
+
+    env.timer.pause = 1;
+    env.timer.Tick();
+    REQUIRE(env.timer.counter_low == 1);
+    REQUIRE(env.timer.counter_high == 0);
+    REQUIRE(env.interrupt_counter == 0);
+    REQUIRE(env.timer.GetMaxSkip() == Teakra::CoreTiming::Callbacks::Infinity);
+
+    env.timer.pause = 0;
+    env.timer.Tick();
+    REQUIRE(env.timer.counter_low == 0);
+    REQUIRE(env.timer.counter_high == 0);
+    REQUIRE(env.interrupt_counter == 1);
+    REQUIRE(env.timer.GetMaxSkip() == Teakra::CoreTiming::Callbacks::Infinity);
+
+    env.timer.Tick();
+    REQUIRE(env.timer.counter_low == 0);
+    REQUIRE(env.timer.counter_high == 0);
+    REQUIRE(env.interrupt_counter == 1);
+    REQUIRE(env.timer.GetMaxSkip() == Teakra::CoreTiming::Callbacks::Infinity);
+}
+
+TEST_CASE("Auto restart mode", "[timer]") {
+    TimerTestEnvironment env;
+    env.timer.count_mode = Teakra::Timer::CountMode::AutoRestart;
+    env.timer.update_mmio = 1;
+    env.timer.start_low = 5;
+    env.timer.start_high = 0x1234;
+    env.timer.Restart();
+
+    REQUIRE(env.timer.counter_low == 5);
+    REQUIRE(env.timer.counter_high == 0x1234);
+    REQUIRE(env.interrupt_counter == 0);
+    REQUIRE(env.timer.GetMaxSkip() == 0x12340004);
+
+    env.timer.Tick();
+    env.timer.Tick();
+
+    REQUIRE(env.timer.counter_low == 3);
+    REQUIRE(env.timer.counter_high == 0x1234);
+    REQUIRE(env.interrupt_counter == 0);
+    REQUIRE(env.timer.GetMaxSkip() == 0x12340002);
+
+    env.timer.Skip(0x12340002);
+    REQUIRE(env.timer.counter_low == 1);
+    REQUIRE(env.timer.counter_high == 0);
+    REQUIRE(env.interrupt_counter == 0);
+    REQUIRE(env.timer.GetMaxSkip() == 0);
+
+    env.timer.pause = 1;
+    env.timer.Tick();
+    REQUIRE(env.timer.counter_low == 1);
+    REQUIRE(env.timer.counter_high == 0);
+    REQUIRE(env.interrupt_counter == 0);
+    REQUIRE(env.timer.GetMaxSkip() == Teakra::CoreTiming::Callbacks::Infinity);
+
+    env.timer.pause = 0;
+    env.timer.Tick();
+    REQUIRE(env.timer.counter_low == 0);
+    REQUIRE(env.timer.counter_high == 0);
+    REQUIRE(env.interrupt_counter == 1);
+    REQUIRE(env.timer.GetMaxSkip() == 0x12340005);
+
+    env.timer.Tick();
+    REQUIRE(env.timer.counter_low == 5);
+    REQUIRE(env.timer.counter_high == 0x1234);
+    REQUIRE(env.interrupt_counter == 1);
+    REQUIRE(env.timer.GetMaxSkip() == 0x12340004);
+}
+
+TEST_CASE("Free running mode", "[timer]") {
+    TimerTestEnvironment env;
+    // Set to Single most first to reset counter
+    env.timer.count_mode = Teakra::Timer::CountMode::Single;
+    env.timer.update_mmio = 1;
+    env.timer.start_low = 5;
+    env.timer.start_high = 0x1234;
+    env.timer.Restart();
+    env.timer.count_mode = Teakra::Timer::CountMode::FreeRunning;
+
+    REQUIRE(env.timer.counter_low == 5);
+    REQUIRE(env.timer.counter_high == 0x1234);
+    REQUIRE(env.interrupt_counter == 0);
+    REQUIRE(env.timer.GetMaxSkip() == 0x12340004);
+
+    env.timer.Restart();
+
+    REQUIRE(env.timer.counter_low == 5);
+    REQUIRE(env.timer.counter_high == 0x1234);
+    REQUIRE(env.interrupt_counter == 0);
+    REQUIRE(env.timer.GetMaxSkip() == 0x12340004);
+
+    env.timer.Tick();
+    env.timer.Tick();
+
+    REQUIRE(env.timer.counter_low == 3);
+    REQUIRE(env.timer.counter_high == 0x1234);
+    REQUIRE(env.interrupt_counter == 0);
+    REQUIRE(env.timer.GetMaxSkip() == 0x12340002);
+
+    env.timer.Skip(0x12340002);
+    REQUIRE(env.timer.counter_low == 1);
+    REQUIRE(env.timer.counter_high == 0);
+    REQUIRE(env.interrupt_counter == 0);
+    REQUIRE(env.timer.GetMaxSkip() == 0);
+
+    env.timer.pause = 1;
+    env.timer.Tick();
+    REQUIRE(env.timer.counter_low == 1);
+    REQUIRE(env.timer.counter_high == 0);
+    REQUIRE(env.interrupt_counter == 0);
+    REQUIRE(env.timer.GetMaxSkip() == Teakra::CoreTiming::Callbacks::Infinity);
+
+    env.timer.pause = 0;
+    env.timer.Tick();
+    REQUIRE(env.timer.counter_low == 0);
+    REQUIRE(env.timer.counter_high == 0);
+    REQUIRE(env.interrupt_counter == 1);
+    REQUIRE(env.timer.GetMaxSkip() == 0xFFFFFFFF);
+
+    env.timer.Tick();
+    REQUIRE(env.timer.counter_low == 0xFFFF);
+    REQUIRE(env.timer.counter_high == 0xFFFF);
+    REQUIRE(env.interrupt_counter == 1);
+    REQUIRE(env.timer.GetMaxSkip() == 0xFFFFFFFE);
+}
+
+TEST_CASE("Event counting restart mode", "[timer]") {
+    TimerTestEnvironment env;
+    env.timer.count_mode = Teakra::Timer::CountMode::EventCount;
+    env.timer.update_mmio = 1;
+    env.timer.start_low = 5;
+    env.timer.start_high = 0;
+    env.timer.Restart();
+
+    REQUIRE(env.timer.counter_low == 5);
+    REQUIRE(env.timer.counter_high == 0);
+    REQUIRE(env.interrupt_counter == 0);
+    REQUIRE(env.timer.GetMaxSkip() == Teakra::CoreTiming::Callbacks::Infinity);
+
+    env.timer.Tick();
+
+    REQUIRE(env.timer.counter_low == 5);
+    REQUIRE(env.timer.counter_high == 0);
+    REQUIRE(env.interrupt_counter == 0);
+    REQUIRE(env.timer.GetMaxSkip() == Teakra::CoreTiming::Callbacks::Infinity);
+
+    env.timer.TickEvent();
+
+    REQUIRE(env.timer.counter_low == 4);
+    REQUIRE(env.timer.counter_high == 0);
+    REQUIRE(env.interrupt_counter == 0);
+    REQUIRE(env.timer.GetMaxSkip() == Teakra::CoreTiming::Callbacks::Infinity);
+
+    env.timer.pause = 1;
+    env.timer.TickEvent();
+
+    REQUIRE(env.timer.counter_low == 4);
+    REQUIRE(env.timer.counter_high == 0);
+    REQUIRE(env.interrupt_counter == 0);
+    REQUIRE(env.timer.GetMaxSkip() == Teakra::CoreTiming::Callbacks::Infinity);
+
+    env.timer.pause = 0;
+    env.timer.TickEvent();
+    env.timer.TickEvent();
+    env.timer.TickEvent();
+
+    REQUIRE(env.timer.counter_low == 1);
+    REQUIRE(env.timer.counter_high == 0);
+    REQUIRE(env.interrupt_counter == 0);
+    REQUIRE(env.timer.GetMaxSkip() == Teakra::CoreTiming::Callbacks::Infinity);
+
+    env.timer.TickEvent();
+
+    REQUIRE(env.timer.counter_low == 0);
+    REQUIRE(env.timer.counter_high == 0);
+    REQUIRE(env.interrupt_counter == 1);
+    REQUIRE(env.timer.GetMaxSkip() == Teakra::CoreTiming::Callbacks::Infinity);
+
+    env.timer.TickEvent();
+
+    REQUIRE(env.timer.counter_low == 0);
+    REQUIRE(env.timer.counter_high == 0);
+    REQUIRE(env.interrupt_counter == 1);
+    REQUIRE(env.timer.GetMaxSkip() == Teakra::CoreTiming::Callbacks::Infinity);
+}