108 lines
3.8 KiB
C++
108 lines
3.8 KiB
C++
// Copyright 2021 The Pigweed Authors
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//
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// Licensed under the Apache License, Version 2.0 (the "License"); you may not
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// use this file except in compliance with the License. You may obtain a copy of
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// the License at
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//
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// https://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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// WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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// License for the specific language governing permissions and limitations under
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// the License.
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#include "pw_i2c/initiator_mock.h"
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#include <array>
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#include <chrono>
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#include <span>
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#include "gtest/gtest.h"
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#include "pw_bytes/array.h"
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#include "pw_bytes/span.h"
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#include "pw_i2c/address.h"
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using namespace std::literals::chrono_literals;
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namespace pw::i2c {
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namespace {
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TEST(Transaction, Read) {
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static constexpr Address kAddress1 = Address::SevenBit<0x01>();
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constexpr auto kExpectRead1 = bytes::Array<1, 2, 3, 4, 5>();
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static constexpr Address kAddress2 = Address::SevenBit<0x02>();
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constexpr auto kExpectRead2 = bytes::Array<3, 4, 5>();
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auto expected_transactions = MakeExpectedTransactionArray(
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{ReadTransaction(OkStatus(), kAddress1, kExpectRead1, 2ms),
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ReadTransaction(OkStatus(), kAddress2, kExpectRead2, 2ms)});
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MockInitiator mocked_i2c(expected_transactions);
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std::array<std::byte, kExpectRead1.size()> read1;
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EXPECT_EQ(mocked_i2c.ReadFor(kAddress1, read1, 2ms), OkStatus());
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EXPECT_TRUE(std::equal(
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read1.begin(), read1.end(), kExpectRead1.begin(), kExpectRead1.end()));
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std::array<std::byte, kExpectRead2.size()> read2;
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EXPECT_EQ(mocked_i2c.ReadFor(kAddress2, read2, 2ms), OkStatus());
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EXPECT_TRUE(std::equal(
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read2.begin(), read2.end(), kExpectRead2.begin(), kExpectRead2.end()));
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EXPECT_EQ(mocked_i2c.Finalize(), OkStatus());
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}
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TEST(Transaction, Write) {
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static constexpr Address kAddress1 = Address::SevenBit<0x01>();
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constexpr auto kExpectWrite1 = bytes::Array<1, 2, 3, 4, 5>();
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static constexpr Address kAddress2 = Address::SevenBit<0x02>();
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constexpr auto kExpectWrite2 = bytes::Array<3, 4, 5>();
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auto expected_transactions = MakeExpectedTransactionArray(
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{WriteTransaction(OkStatus(), kAddress1, kExpectWrite1, 2ms),
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WriteTransaction(OkStatus(), kAddress2, kExpectWrite2, 2ms)});
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MockInitiator mocked_i2c(expected_transactions);
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EXPECT_EQ(mocked_i2c.WriteFor(kAddress1, kExpectWrite1, 2ms), OkStatus());
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EXPECT_EQ(mocked_i2c.WriteFor(kAddress2, kExpectWrite2, 2ms), OkStatus());
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EXPECT_EQ(mocked_i2c.Finalize(), OkStatus());
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}
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TEST(Transaction, WriteRead) {
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static constexpr Address kAddress1 = Address::SevenBit<0x01>();
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constexpr auto kExpectWrite1 = bytes::Array<1, 2, 3, 4, 5>();
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constexpr auto kExpectRead1 = bytes::Array<1, 2>();
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static constexpr Address kAddress2 = Address::SevenBit<0x02>();
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constexpr auto kExpectWrite2 = bytes::Array<3, 4, 5>();
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constexpr const auto kExpectRead2 = bytes::Array<3, 4>();
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auto expected_transactions = MakeExpectedTransactionArray({
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Transaction(OkStatus(), kAddress1, kExpectWrite1, kExpectRead1, 2ms),
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Transaction(OkStatus(), kAddress2, kExpectWrite2, kExpectRead2, 2ms),
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});
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MockInitiator mocked_i2c(expected_transactions);
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std::array<std::byte, kExpectRead1.size()> read1;
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EXPECT_EQ(mocked_i2c.WriteReadFor(kAddress1, kExpectWrite1, read1, 2ms),
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OkStatus());
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EXPECT_TRUE(std::equal(read1.begin(), read1.end(), kExpectRead1.begin()));
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std::array<std::byte, kExpectRead1.size()> read2;
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EXPECT_EQ(mocked_i2c.WriteReadFor(kAddress2, kExpectWrite2, read2, 2ms),
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OkStatus());
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EXPECT_TRUE(std::equal(
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read2.begin(), read2.end(), kExpectRead2.begin(), kExpectRead2.end()));
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EXPECT_EQ(mocked_i2c.Finalize(), OkStatus());
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}
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} // namespace
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} // namespace pw::i2c
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