fsfw/unittests/hal/testCommandExecutor.cpp

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#include <unistd.h>
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#include <catch2/catch_test_macros.hpp>
#include <fstream>
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#include <iostream>
#include "fsfw/container/DynamicFIFO.h"
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#include "fsfw/container/SimpleRingBuffer.h"
#include "fsfw/platform.h"
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#include "fsfw/serviceinterface.h"
#include "fsfw_hal/linux/CommandExecutor.h"
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#include "tests/TestsConfig.h"
#ifdef PLATFORM_UNIX
static const char TEST_FILE_NAME[] = "/tmp/fsfw-unittest-test.txt";
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TEST_CASE("Command Executor", "[hal][linux]") {
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// Check blocking mode first
CommandExecutor cmdExecutor(1024);
std::string cmd = "echo \"test\" >> " + std::string(TEST_FILE_NAME);
REQUIRE(cmdExecutor.getCurrentState() == CommandExecutor::States::IDLE);
ReturnValue_t result = cmdExecutor.load(cmd, true, true);
REQUIRE(cmdExecutor.getCurrentState() == CommandExecutor::States::COMMAND_LOADED);
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REQUIRE(result == returnvalue::OK);
REQUIRE(cmdExecutor.execute() == returnvalue::OK);
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// Check that file exists with contents
std::ifstream file(TEST_FILE_NAME);
std::string line;
std::getline(file, line);
CHECK(line == "test");
std::remove(TEST_FILE_NAME);
REQUIRE(cmdExecutor.getCurrentState() == CommandExecutor::States::IDLE);
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// Now check non-blocking mode
SimpleRingBuffer outputBuffer(524, true);
DynamicFIFO<uint16_t> sizesFifo(12);
cmdExecutor.setRingBuffer(&outputBuffer, &sizesFifo);
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result = cmdExecutor.load("echo \"Hello World\"", false, false);
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REQUIRE(result == returnvalue::OK);
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cmdExecutor.execute();
bool bytesHaveBeenRead = false;
size_t limitIdx = 0;
while (result != CommandExecutor::EXECUTION_FINISHED) {
limitIdx++;
result = cmdExecutor.check(bytesHaveBeenRead);
REQUIRE(result != CommandExecutor::COMMAND_ERROR);
usleep(500);
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REQUIRE(limitIdx < 500);
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}
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limitIdx = 0;
CHECK(bytesHaveBeenRead == true);
CHECK(result == CommandExecutor::EXECUTION_FINISHED);
uint16_t readBytes = 0;
sizesFifo.retrieve(&readBytes);
REQUIRE(readBytes == 12);
REQUIRE(outputBuffer.getAvailableReadData() == 12);
uint8_t readBuffer[32] = {};
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REQUIRE(outputBuffer.readData(readBuffer, 12) == returnvalue::OK);
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std::string readString(reinterpret_cast<char*>(readBuffer));
std::string cmpString = "Hello World\n";
CHECK(readString == cmpString);
outputBuffer.deleteData(12, true);
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// Issues with CI/CD
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#if FSFW_CICD_BUILD == 0
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// Test more complex command
result = cmdExecutor.load("ping -c 1 localhost", false, false);
REQUIRE(cmdExecutor.getCurrentState() == CommandExecutor::States::COMMAND_LOADED);
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REQUIRE(cmdExecutor.execute() == returnvalue::OK);
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REQUIRE(cmdExecutor.getCurrentState() == CommandExecutor::States::PENDING);
limitIdx = 0;
while (result != CommandExecutor::EXECUTION_FINISHED) {
limitIdx++;
result = cmdExecutor.check(bytesHaveBeenRead);
REQUIRE(result != CommandExecutor::COMMAND_ERROR);
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// This ensures that the tests do not block indefinitely
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usleep(500);
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REQUIRE(limitIdx < 50000);
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}
limitIdx = 0;
CHECK(bytesHaveBeenRead == true);
CHECK(result == CommandExecutor::EXECUTION_FINISHED);
REQUIRE(cmdExecutor.getCurrentState() == CommandExecutor::States::IDLE);
readBytes = 0;
sizesFifo.retrieve(&readBytes);
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uint8_t largerReadBuffer[1024] = {};
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// That's about the size of the reply
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bool beTrue = (readBytes > 100) and (readBytes < 400);
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if (not beTrue) {
size_t readLen = outputBuffer.getAvailableReadData();
if (readLen > sizeof(largerReadBuffer) - 1) {
readLen = sizeof(largerReadBuffer) - 1;
}
outputBuffer.readData(largerReadBuffer, readLen);
std::string readString(reinterpret_cast<char*>(largerReadBuffer));
std::cerr << "Catch2 tag cmd-exec: Read " << readBytes << ": " << std::endl;
std::cerr << readString << std::endl;
}
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REQUIRE(beTrue);
outputBuffer.readData(largerReadBuffer, readBytes);
// You can also check this output in the debugger
std::string allTheReply(reinterpret_cast<char*>(largerReadBuffer));
// I am just going to assume that this string is the same across ping implementations
// of different Linux systems
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REQUIRE(allTheReply.find("PING localhost") != std::string::npos);
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#endif
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// Now check failing command
result = cmdExecutor.load("false", false, false);
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REQUIRE(result == returnvalue::OK);
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result = cmdExecutor.execute();
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REQUIRE(result == returnvalue::OK);
while (result != CommandExecutor::EXECUTION_FINISHED and result != returnvalue::FAILED) {
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limitIdx++;
result = cmdExecutor.check(bytesHaveBeenRead);
REQUIRE(result != CommandExecutor::COMMAND_ERROR);
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// This ensures that the tests do not block indefinitely
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usleep(500);
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REQUIRE(limitIdx < 500);
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}
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REQUIRE(result == returnvalue::FAILED);
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REQUIRE(cmdExecutor.getLastError() == 1);
}
#endif