and finally a unit test, like it shoud be!

unit_tests/tests/test_etb.cpp

@@ -0,0 +1,67 @@
+/*
+ * @file test_etb.cpp
+ *
+ * @date Dec 13, 2019
+ * @author Andrey Belomutskiy, (c) 2012-2019
+ */
+
+#include "engine_test_helper.h"
+#include "electronic_throttle.h"
+#include "dc_motor.h"
+
+class MockEtb : public IEtbController {
+public:
+	// todo: somehow I am failinig to figure out GMOCK syntax here?
+	// todo: convert to GMOCK
+	int resetCount = 0;
+	int startCount = 0;
+	int initCount = 0;
+
+	void reset() {
+		resetCount++;
+	}
+
+	void Start() override {
+		startCount++;
+	}
+
+	void init(DcMotor *motor, int ownIndex, pid_s *pidParameters) {
+		initCount++;
+	};
+
+	void PeriodicTask() {
+	};
+
+	int getPeriodMs() {
+		return 1;
+	};
+};
+
+
+TEST(etb, singleEtbInitialization) {
+
+	MockEtb mocks[ETB_COUNT];
+
+	WITH_ENGINE_TEST_HELPER(TEST_ENGINE);
+
+	for (int i = 0; i < ETB_COUNT; i++) {
+		engine->etbControllers[i] = &mocks[i];
+	}
+
+	 engineConfiguration->throttlePedalPositionAdcChannel = EFI_ADC_9;
+
+	doInitElectronicThrottle(PASS_ENGINE_PARAMETER_SIGNATURE);
+
+	// assert that 1st ETB is initialized and started
+	ASSERT_EQ(1, mocks[0].initCount) << "1st init";
+	ASSERT_EQ(1, mocks[0].startCount);
+
+	// assert that 2nd ETB is initialized but not started
+	ASSERT_EQ(1, mocks[1].initCount) << "2nd init";
+	ASSERT_EQ(0, mocks[1].startCount) << "2nd start";
+
+
+}
+
+
+

unit_tests/tests/tests.mk

@@ -15,6 +15,7 @@ TESTS_SRC_CPP = \
 	tests/test_trigger_decoder.cpp \
 	tests/test_trigger_noiseless.cpp \
 	tests/test_issue_898.cpp \
+	tests/test_etb.cpp \
 	tests/test_ignition_scheduling.cpp \
 	tests/test_fuel_map.cpp \
 	tests/test_fuel_wall_wetting.cpp \