mirror of https://github.com/rusefi/rusefi.git
121 lines
3.1 KiB
C++
121 lines
3.1 KiB
C++
/**
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* @file test_gpiochip.cpp
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*
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* @date Mar 12, 2019
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*/
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#include "pch.h"
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#include "gpio/gpio_ext.h"
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using ::testing::_;
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static int io_state = 0;
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static int initcalls = 0;
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struct GoodChip : public GpioChip {
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int init() override {
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initcalls++;
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return 0;
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}
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};
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class TestChip1 : public GoodChip {
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int readPad(size_t pin) override {
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if (pin & 0x01)
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return 1;
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return 0;
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}
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};
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static TestChip1 testchip1;
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class TestChip2 : public GoodChip {
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int writePad(size_t pin, int value) override {
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if (value)
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io_state |= (1 << value);
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else
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io_state &= ~(1 << value);
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return 0;
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}
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};
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static TestChip2 testchip2;
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static int calls_to_failed_chip = 0;
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// This chip fails to start
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class TestChip3 : public GpioChip {
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int writePad(size_t pin, int value) override {
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calls_to_failed_chip++;
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return 0;
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}
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int init() override {
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return -1;
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}
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};
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static TestChip3 testchip3;
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TEST(gpioext, testGpioExt) {
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int ret;
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int chip1_base, chip2_base, chip3_base;
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printf("====================================================================================== testGpioExt\r\n");
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/* should fail to register chip with zero gpios */
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EXPECT_FALSE(gpiochip_register((brain_pin_e)(BRAIN_PIN_ONCHIP_LAST + 1), "invalid", testchip1, 0) > 0);
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/* should fail to register chip with base overlapig on-chip gpios */
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EXPECT_FALSE(gpiochip_register((brain_pin_e)(BRAIN_PIN_ONCHIP_LAST - 1), "invalid", testchip1, 0) > 0);
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chip1_base = gpiochip_register((brain_pin_e)(BRAIN_PIN_ONCHIP_LAST + 1), "input only", testchip1, 16);
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EXPECT_TRUE(chip1_base > 0);
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EXPECT_EQ(16, gpiochips_get_total_pins());
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/* should fail to register chip overlapping other one */
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EXPECT_FALSE(gpiochip_register((brain_pin_e)(BRAIN_PIN_ONCHIP_LAST + 1 + 15), "output only", testchip2, 16) > 0);
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chip2_base = gpiochip_register((brain_pin_e)(BRAIN_PIN_ONCHIP_LAST + 1 + 16), "output only", testchip2, 16);
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EXPECT_TRUE(chip2_base > 0);
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/* this chip will fail to init, but should be registered without errors */
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chip3_base = gpiochip_register((brain_pin_e)(BRAIN_PIN_ONCHIP_LAST + 1 + 16 + 16), "failed chip", testchip3, 16);
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EXPECT_TRUE(chip2_base > 0);
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EXPECT_EQ(48, gpiochips_get_total_pins());
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/* init 3 chips, one will fail */
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ret = gpiochips_init();
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EXPECT_EQ(32, ret);
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/* two drivers should be inited */
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EXPECT_EQ(2, initcalls);
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/* gpio reads */
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EXPECT_TRUE(gpiochips_readPad((Gpio)(chip1_base + 0)) == 0);
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EXPECT_TRUE(gpiochips_readPad((Gpio)(chip1_base + 1)) != 0);
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/* gpio write */
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gpiochips_writePad((Gpio)(chip2_base + 0), 0);
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gpiochips_writePad((Gpio)(chip2_base + 1), 1);
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EXPECT_EQ(0x02, io_state);
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/* try to access failed chip */
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EXPECT_ANY_THROW(gpiochips_writePad((Gpio)(chip3_base + 0), 0));
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EXPECT_ANY_THROW(gpiochips_writePad((Gpio)(chip3_base + 1), 1));
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EXPECT_EQ(0, calls_to_failed_chip);
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// todo: make readPad fail in a similar way?
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/* read/write outside range */
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EXPECT_TRUE(gpiochips_readPad((Gpio)(chip1_base - 1)) < 0);
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EXPECT_ANY_THROW(gpiochips_writePad((Gpio)(chip1_base - 1), 1));
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EXPECT_TRUE(gpiochips_readPad((Gpio)(chip3_base + 16)) < 0);
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EXPECT_ANY_THROW(gpiochips_writePad((Gpio)(chip3_base + 16), 1));
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}
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