// Copyright 2023 The Pigweed Authors // // 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 // // https://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 "pw_i2c_linux/initiator.h" #include #include "pw_i2c/initiator.h" #include "pw_unit_test/framework.h" namespace pw::i2c { namespace { // A bus path that doesn't exist. Linux only supports 255 minor numbers. constexpr auto kBusPathMissing = "/dev/i2c-256"; // A bus path that points at something that is not an I2C bus. constexpr auto kBusPathInvalid = "/dev/null"; TEST(LinuxInitiatorTest, TestOpenMissingFileFails) { EXPECT_EQ(LinuxInitiator::OpenI2cBus(kBusPathMissing).status(), Status::InvalidArgument()); } TEST(LinuxInitiatorTest, TestOpenInvalidFileFails) { EXPECT_EQ(LinuxInitiator::OpenI2cBus(kBusPathInvalid).status(), Status::InvalidArgument()); } // Check that LinuxInitiator implements Initiator. static_assert(std::is_assignable_v); } // namespace } // namespace pw::i2c