Buzzer tests (#12)

* Added unit tests for buzzer and vsm (incomplete)

* Removed VSM tests

---------

Co-authored-by: Rhys Denno <rdenno3@gatech.edu>

Author: jhwang04

test/test_systems/test_buzzer.h

@@ -0,0 +1,22 @@
+#include "gtest/gtest.h"
+#include "BuzzerController.h"
+
+BuzzerController &buzzer = BuzzerController::getInstance();
+int base = 2500; // arbitrary number greater than 2000
+
+TEST (BuzzerControllerTesting, initial_state) {
+    ASSERT_EQ(buzzer.buzzer_is_active(base), false);
+}
+
+TEST (BuzzerControllerTesting, activate_buzzer) {
+    buzzer.activate(base);
+    ASSERT_EQ(buzzer.buzzer_is_active(base+10), true);
+    ASSERT_EQ(buzzer.buzzer_is_active(base+2010), false);
+}
+
+TEST (BuzzerControllerTesting, interrupt_buzzer) {
+    buzzer.activate(base);
+    ASSERT_EQ(buzzer.buzzer_is_active(base+10), true);
+    buzzer.deactivate();
+    ASSERT_EQ(buzzer.buzzer_is_active(base+20), false);
+}

test/test_systems/test_systems.cpp

@@ -2,6 +2,7 @@
 #include <gmock/gmock.h>
 #include "test_scheduler.h"
 #include "test_tcmux.h"
+#include "test_buzzer.h"
 #include "test_watchdog.h"
 
 int main(int argc, char **argv)