| Line | Branch | Exec | Source |
|---|---|---|---|
| 1 | // ====================================================================== | ||
| 2 | // \title CcsdsTestUtils.cpp | ||
| 3 | // \author bocchino | ||
| 4 | // \brief Test utilities for CCSDS | ||
| 5 | // ====================================================================== | ||
| 6 | |||
| 7 | #include "Svc/Ccsds/TestUtils/TestUtils.hpp" | ||
| 8 | #include "STest/Random/Random.hpp" | ||
| 9 | |||
| 10 | namespace Svc { | ||
| 11 | |||
| 12 | namespace CcsdsTestUtils { | ||
| 13 | |||
| 14 | using SerialType = ComCfg::Apid::SerialType; | ||
| 15 | using ApidOption = Fw::Optional<ComCfg::Apid::T>; | ||
| 16 | |||
| 17 | 2455 | ApidOption getRandomApid() { | |
| 18 |
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2455 | const SerialType selectedIdx = static_cast<SerialType>(STest::Random::startLength(0, ComCfg::Apid::NUM_CONSTANTS)); |
| 19 | // Choose from within the bounds provided by CCSDS and the SerialType. | ||
| 20 | // 1. We have to respect the CCSDS bound because we are testing CCSDS code | ||
| 21 | // 2. We have to respect the SerialType bound because F Prime may not be configured | ||
| 22 | // to use CCSDS, but we still want the test to be valid, if possible. | ||
| 23 | 2455 | constexpr auto ccsdsBound = static_cast<SerialType>((1 << 11) - 1); // 11 bits | |
| 24 | 2455 | constexpr auto serialTypeBound = std::numeric_limits<SerialType>::max(); | |
| 25 | 2455 | constexpr auto bound = std::min(ccsdsBound, serialTypeBound); | |
| 26 | // Search through the interval [0, maxApid] until we find a valid APID at the | ||
| 27 | // selected index, or we run out of numbers | ||
| 28 | 2455 | SerialType idx = 0; | |
| 29 | 2455 | SerialType apid = 0; | |
| 30 | // Break the loop checking into two operations so that g++ can't report a Wtype-limits warning | ||
| 31 | // when bound is the type max (since neither individual check is always true, but <= would be) | ||
| 32 |
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891672 | for (SerialType candidateApid = 0; candidateApid < bound || candidateApid == bound; candidateApid++) { |
| 33 |
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891472 | if (ComCfg::Apid::isValid(candidateApid)) { |
| 34 | // Found a valid APID: store it | ||
| 35 | 15568 | apid = candidateApid; | |
| 36 |
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15568 | if (idx == selectedIdx) { |
| 37 | // We are at the selected index: done | ||
| 38 | 2255 | break; | |
| 39 | } | ||
| 40 | // Not yet at the selected index: keep going | ||
| 41 | // We'll either go onto the next valid APID or use the current one | ||
| 42 | // if we run off the end of the 11-bit range | ||
| 43 | 13313 | idx++; | |
| 44 | } | ||
| 45 | } | ||
| 46 | // If the APID we found is not valid, then return NONE | ||
| 47 | // This can happen if all of the configured APIDs are out of the 11-bit range | ||
| 48 | // required by CCSDS | ||
| 49 |
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2455 | const auto result = ComCfg::Apid::isValid(apid) ? ApidOption(static_cast<ComCfg::Apid::T>(apid)) : Fw::NONE; |
| 50 | 4910 | return result; | |
| 51 | } | ||
| 52 | |||
| 53 | } // namespace CcsdsTestUtils | ||
| 54 | |||
| 55 | } // namespace Svc | ||
| 56 |