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/* Copyright 2021 Simon Arlott
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "gtest/gtest.h"
#include "debounce_test_common.h"
#include <algorithm>
#include <iomanip>
#include <sstream>
extern "C" {
#include "debounce.h"
#include "timer.h"
void set_time(uint32_t t);
void advance_time(uint32_t ms);
}
void DebounceTest::addEvents(std::initializer_list<DebounceTestEvent> events) {
events_.insert(events_.end(), events.begin(), events.end());
}
void DebounceTest::runEvents() {
/* Run the test multiple times, from 1kHz to 10kHz scan rate */
for (extra_iterations_ = 0; extra_iterations_ < 10; extra_iterations_++) {
if (time_jumps_) {
/* Don't advance time smoothly, jump to the next event (some tests require this) */
auto_advance_time_ = false;
runEventsInternal();
} else {
/* Run the test with both smooth and irregular time; it must produce the same result */
auto_advance_time_ = true;
runEventsInternal();
auto_advance_time_ = false;
runEventsInternal();
}
}
}
void DebounceTest::runEventsInternal() {
fast_timer_t previous = 0;
bool first = true;
/* Initialise keyboard with start time (offset to avoid testing at 0) and all keys UP */
debounce_init(MATRIX_ROWS);
set_time(time_offset_);
std::fill(std::begin(input_matrix_), std::end(input_matrix_), 0);
std::fill(std::begin(output_matrix_), std::end(output_matrix_), 0);
for (auto &event : events_) {
if (!auto_advance_time_) {
/* Jump to the next event */
set_time(time_offset_ + event.time_);
} else if (!first && event.time_ == previous + 1) {
/* This event immediately follows the previous one, don't make extra debounce() calls */
advance_time(1);
} else {
/* Fast forward to the time for this event, calling debounce() with no changes */
ASSERT_LT((time_offset_ + event.time_) - timer_read_fast(), 60000) << "Test tries to advance more than 1 minute of time";
while (timer_read_fast() != time_offset_ + event.time_) {
runDebounce(false);
checkCookedMatrix(false, "debounce() modified cooked matrix");
advance_time(1);
}
}
first = false;
previous = event.time_;
/* Prepare input matrix */
for (auto &input : event.inputs_) {
matrixUpdate(input_matrix_, "input", input);
}
/* Call debounce */
runDebounce(!event.inputs_.empty());
/* Prepare output matrix */
for (auto &output : event.outputs_) {
matrixUpdate(output_matrix_, "output", output);
}
/* Check output matrix has expected change events */
for (auto &output : event.outputs_) {
EXPECT_EQ(!!(cooked_matrix_[output.row_] & (1U << output.col_)), directionValue(output.direction_)) << "Missing event at " << strTime() << " expected key " << output.row_ << "," << output.col_ << " " << directionLabel(output.direction_) << "\ninput_matrix: changed=" << !event.inputs_.empty() << "\n" << strMatrix(input_matrix_) << "\nexpected_matrix:\n" << strMatrix(output_matrix_) << "\nactual_matrix:\n" << strMatrix(cooked_matrix_);
}
/* Check output matrix has no other changes */
checkCookedMatrix(!event.inputs_.empty(), "debounce() cooked matrix does not match expected output matrix");
/* Perform some extra iterations of the matrix scan with no changes */
for (int i = 0; i < extra_iterations_; i++) {
runDebounce(false);
checkCookedMatrix(false, "debounce() modified cooked matrix");
}
}
/* Check that no further changes happen for 1 minute */
for (int i = 0; i < 60000; i++) {
runDebounce(false);
checkCookedMatrix(false, "debounce() modified cooked matrix");
advance_time(1);
}
debounce_free();
}
void DebounceTest::runDebounce(bool changed) {
std::copy(std::begin(input_matrix_), std::end(input_matrix_), std::begin(raw_matrix_));
std::copy(std::begin(output_matrix_), std::end(output_matrix_), std::begin(cooked_matrix_));
bool cooked_changed = debounce(raw_matrix_, cooked_matrix_, MATRIX_ROWS, changed);
if (!std::equal(std::begin(input_matrix_), std::end(input_matrix_), std::begin(raw_matrix_))) {
FAIL() << "Fatal error: debounce() modified raw matrix at " << strTime() << "\ninput_matrix: changed=" << changed << "\n" << strMatrix(input_matrix_) << "\nraw_matrix:\n" << strMatrix(raw_matrix_);
}
if (std::equal(std::begin(output_matrix_), std::end(output_matrix_), std::begin(cooked_matrix_)) && cooked_changed) {
FAIL() << "Fatal error: debounce() did detect a wrong cooked matrix change at " << strTime() << "\noutput_matrix: cooked_changed=" << cooked_changed << "\n" << strMatrix(output_matrix_) << "\ncooked_matrix:\n" << strMatrix(cooked_matrix_);
}
}
void DebounceTest::checkCookedMatrix(bool changed, const std::string &error_message) {
if (!std::equal(std::begin(output_matrix_), std::end(output_matrix_), std::begin(cooked_matrix_))) {
FAIL() << "Unexpected event: " << error_message << " at " << strTime() << "\ninput_matrix: changed=" << changed << "\n" << strMatrix(input_matrix_) << "\nexpected_matrix:\n" << strMatrix(output_matrix_) << "\nactual_matrix:\n" << strMatrix(cooked_matrix_);
}
}
std::string DebounceTest::strTime() {
std::stringstream text;
text << "time " << (timer_read_fast() - time_offset_) << " (extra_iterations=" << extra_iterations_ << ", auto_advance_time=" << auto_advance_time_ << ")";
return text.str();
}
std::string DebounceTest::strMatrix(matrix_row_t matrix[]) {
std::stringstream text;
text << "\t" << std::setw(3) << "";
for (int col = 0; col < MATRIX_COLS; col++) {
text << " " << std::setw(2) << col;
}
text << "\n";
for (int row = 0; row < MATRIX_ROWS; row++) {
text << "\t" << std::setw(2) << row << ":";
for (int col = 0; col < MATRIX_COLS; col++) {
text << ((matrix[row] & (1U << col)) ? " XX" : " __");
}
text << "\n";
}
return text.str();
}
bool DebounceTest::directionValue(Direction direction) {
switch (direction) {
case DOWN:
return true;
case UP:
return false;
}
}
std::string DebounceTest::directionLabel(Direction direction) {
switch (direction) {
case DOWN:
return "DOWN";
case UP:
return "UP";
}
}
/* Modify a matrix and verify that events always specify a change */
void DebounceTest::matrixUpdate(matrix_row_t matrix[], const std::string &name, const MatrixTestEvent &event) {
ASSERT_NE(!!(matrix[event.row_] & (1U << event.col_)), directionValue(event.direction_)) << "Test " << name << " at " << strTime() << " sets key " << event.row_ << "," << event.col_ << " " << directionLabel(event.direction_) << " but it is already " << directionLabel(event.direction_) << "\n" << name << "_matrix:\n" << strMatrix(matrix);
switch (event.direction_) {
case DOWN:
matrix[event.row_] |= (1U << event.col_);
break;
case UP:
matrix[event.row_] &= ~(1U << event.col_);
break;
}
}
DebounceTestEvent::DebounceTestEvent(fast_timer_t time, std::initializer_list<MatrixTestEvent> inputs, std::initializer_list<MatrixTestEvent> outputs) : time_(time), inputs_(inputs), outputs_(outputs) {}
MatrixTestEvent::MatrixTestEvent(int row, int col, Direction direction) : row_(row), col_(col), direction_(direction) {}
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