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/*
* Copyright (C) 2016 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <memory>
#include <gtest/gtest.h>
#include "gpio_driver_mock.h"
#include "peripheral_manager.h"
#include "peripheralmanager/gpio.h"
#include "peripheralmanager/peripheral_manager_client.h"
using android::GpioDriverInfo;
using android::GpioDriverInfoBase;
using android::GpioDriverMock;
using android::GpioManager;
using android::PeripheralManager;
// Base class used to test the Gpio C API.
// As we rely on static, global managers, we cannot run this tests in parallel.
// Please use -j1 when running theses tests or you may see false negatives.
class GpioTest : public ::testing::Test {
public:
void SetUp() {
pman_.InitForTest();
GpioManager* man = GpioManager::GetGpioManager();
man->RegisterDriver(std::unique_ptr<GpioDriverInfoBase>(
new GpioDriverInfo<GpioDriverMock, void*>(nullptr)));
man->RegisterGpioSysfs("IO1", 1);
man->RegisterGpioSysfs("IO2", 2);
man->RegisterGpioSysfs("IO3", 3);
man->RegisterGpioSysfs("IO4", 4);
man->RegisterGpioSysfs("IO5", 5);
}
void TearDown() { GpioManager::ResetGpioManager(); }
private:
PeripheralManager pman_;
};
// Test that we list the Gpios available correctly.
TEST_F(GpioTest, CanListGpios) {
BPeripheralManagerClient* client = BPeripheralManagerClient_new();
ASSERT_NE(nullptr, client);
int ngpios;
char** list = BPeripheralManagerClient_listGpio(client, &ngpios);
EXPECT_EQ(5, ngpios);
EXPECT_EQ("IO1", std::string(list[0]));
EXPECT_EQ("IO2", std::string(list[1]));
EXPECT_EQ("IO3", std::string(list[2]));
EXPECT_EQ("IO4", std::string(list[3]));
EXPECT_EQ("IO5", std::string(list[4]));
// Free the list.
for (int i = 0; i < 5; i++) {
free(list[i]);
}
free(list);
}
// Test that we can open a Gpio and act on it.
TEST_F(GpioTest, CanOpenGpio) {
BPeripheralManagerClient* client = BPeripheralManagerClient_new();
ASSERT_NE(nullptr, client);
BGpio* gpio;
EXPECT_EQ(0, BPeripheralManagerClient_openGpio(client, "IO1", &gpio));
ASSERT_NE(nullptr, gpio);
// Can set the direction. If the direction is invalid, we fail.
EXPECT_EQ(0, BGpio_setDirection(gpio, DIRECTION_OUT_INITIALLY_HIGH));
EXPECT_EQ(EINVAL, BGpio_setDirection(gpio, 10));
// Can set the value.
EXPECT_EQ(0, BGpio_setValue(gpio, 1));
// Can set the active type. If the type is unknown, we fail.
EXPECT_EQ(0, BGpio_setActiveType(gpio, ACTIVE_LOW));
EXPECT_EQ(EINVAL, BGpio_setActiveType(gpio, 5));
EXPECT_EQ(0, BGpio_setDirection(gpio, DIRECTION_IN));
// Can read the value from the Gpio.
int value;
EXPECT_EQ(0, BGpio_getValue(gpio, &value));
// Can set the edge type. If the type is unknown, we fail.
EXPECT_EQ(0, BGpio_setEdgeTriggerType(gpio, RISING_EDGE));
EXPECT_EQ(EINVAL, BGpio_setEdgeTriggerType(gpio, -1));
BGpio_delete(gpio);
BPeripheralManagerClient_delete(client);
}
// Test that openning an unknown Gpio fails.
TEST_F(GpioTest, OpenningUnknownGpioFails) {
BPeripheralManagerClient* client = BPeripheralManagerClient_new();
ASSERT_NE(nullptr, client);
BGpio* gpio = nullptr;
EXPECT_EQ(ENODEV,
BPeripheralManagerClient_openGpio(client, "unknown", &gpio));
EXPECT_EQ(nullptr, gpio);
BPeripheralManagerClient_delete(client);
}
// Test that we track ownership correctly (can't open a Gpio twice).
TEST_F(GpioTest, GpioOnlyOpenedOnce) {
BPeripheralManagerClient* client = BPeripheralManagerClient_new();
ASSERT_NE(nullptr, client);
BGpio* gpio1;
BGpio* gpio2;
BGpio* gpio3;
EXPECT_EQ(0, BPeripheralManagerClient_openGpio(client, "IO1", &gpio1));
EXPECT_NE(nullptr, gpio1);
// Can't open the same Gpio.
EXPECT_EQ(EBUSY, BPeripheralManagerClient_openGpio(client, "IO1", &gpio2));
// Can open another Gpio.
EXPECT_EQ(0, BPeripheralManagerClient_openGpio(client, "IO3", &gpio3));
// Once we delete the struct, the Gpio is released and we can open it.
BGpio_delete(gpio1);
EXPECT_EQ(0, BPeripheralManagerClient_openGpio(client, "IO1", &gpio2));
BGpio_delete(gpio2);
BGpio_delete(gpio3);
BPeripheralManagerClient_delete(client);
}
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