81 lines
2.6 KiB
C++
81 lines
2.6 KiB
C++
/*!
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* \file test_spi_impl.cpp
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*
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* Copyright (C) 2018 Christos Choutouridis
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License as
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* published by the Free Software Foundation, either version 3
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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*/
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#include <gtest/gtest.h>
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#include <utl/com/spi_bb.h>
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/*!
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* \warning
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* This is not right way of testing communication interfaces. We have to
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* implement a Mock object to simulate the slave's behavior. Until then
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* we have the following.
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*/
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namespace test_spi {
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using namespace utl;
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// implementer class stub
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class SPI : public spi_bb_i<SPI, spi::cpol::LOW, spi::cpha::LOW> {
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friend spi_bb_i<SPI, spi::cpol::LOW, spi::cpha::LOW>;
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void MOSI (bool st) { (void)st; } // Imaginary pin functionality
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bool MISO () { return true; } // All reads become 0xFF
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void SCLK (bool st) { (void)st; } // Imaginary pin functionality
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void delay (uint32_t nsec) { (void)nsec; } // Imaginary delay functionality
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public:
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SPI (uint32_t clk =100000) noexcept : // expect 100000 default constructed clock
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spi_bb_i<SPI, spi::cpol::LOW, spi::cpha::LOW>(clk) {
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}
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};
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// fixture
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class Test_spi_impl : public ::testing::Test {
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protected:
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//void SetUp() override { }
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//void TearDown() override { }
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SPI spi {};
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};
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TEST_F(Test_spi_impl, TestConcept) {
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// EXPECT_EQ(Spi_i<SPI>, true);
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}
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TEST_F(Test_spi_impl, TestConstruction) {
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EXPECT_EQ(spi.clock(), 100000UL);
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}
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TEST_F (Test_spi_impl, TestFunctionality) {
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uint8_t b = 42;
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uint8_t bb[] = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10};
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uint8_t bbb[sizeof bb];
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spi.clock(500000UL);
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EXPECT_EQ(spi.clock(), 500000UL);
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EXPECT_EQ(spi.tx_data(b), 0xFF);
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EXPECT_EQ(spi.tx_data(bb, bbb, sizeof(bb)), sizeof (bb));
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EXPECT_EQ(spi.rx_data(), 0xFF);
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spi.rx_data(bbb, sizeof bb);
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for (unsigned int i=0 ; i<sizeof bb ; ++i) {
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EXPECT_EQ (bbb[i], 0xFF);
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}
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}
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}
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