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[common] add Preference helper methods for 2-bit preference value (#8895)

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This commit introduces a common `Preference` class which defines
constants and helper methods (e.g., to convert between an `int8_t`
preference and its 2-bit unsigned representation). This is used for
`RoutePreference` in Network Data entries and also for Parent
Priority in `ConnectivityTlv`.
This commit is contained in:
Abtin Keshavarzian
2023-03-23 18:47:57 -07:00
committed by GitHub
parent 84be135243
commit e8f3ec0fd3
10 changed files with 271 additions and 77 deletions
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tests/unit/test_serial_number.cpp
+62
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@@ -34,6 +34,7 @@
#include "common/code_utils.hpp"
#include "common/num_utils.hpp"
#include "common/numeric_limits.hpp"
#include "common/preference.hpp"
#include "common/serial_number.hpp"
namespace ot {
@@ -152,6 +153,66 @@ void TestNumUtils(void)
printf("TestNumUtils() passed\n");
}
void TestPreference(void)
{
VerifyOrQuit(Preference::kHigh == 1);
VerifyOrQuit(Preference::kMedium == 0);
VerifyOrQuit(Preference::kLow == -1);
// To2BitUint()
VerifyOrQuit(Preference::To2BitUint(Preference::kHigh) == 0x1);
VerifyOrQuit(Preference::To2BitUint(Preference::kMedium) == 0x0);
VerifyOrQuit(Preference::To2BitUint(Preference::kLow) == 0x3);
VerifyOrQuit(Preference::To2BitUint(2) == 0x1);
VerifyOrQuit(Preference::To2BitUint(-2) == 0x3);
VerifyOrQuit(Preference::To2BitUint(127) == 0x1);
VerifyOrQuit(Preference::To2BitUint(-128) == 0x3);
// From2BitUint()
VerifyOrQuit(Preference::From2BitUint(0x1) == Preference::kHigh);
VerifyOrQuit(Preference::From2BitUint(0x0) == Preference::kMedium);
VerifyOrQuit(Preference::From2BitUint(0x3) == Preference::kLow);
VerifyOrQuit(Preference::From2BitUint(0x2) == Preference::kMedium);
VerifyOrQuit(Preference::From2BitUint(0x1 | 4) == Preference::kHigh);
VerifyOrQuit(Preference::From2BitUint(0x0 | 4) == Preference::kMedium);
VerifyOrQuit(Preference::From2BitUint(0x3 | 4) == Preference::kLow);
VerifyOrQuit(Preference::From2BitUint(0x2 | 4) == Preference::kMedium);
VerifyOrQuit(Preference::From2BitUint(0x1 | 0xfc) == Preference::kHigh);
VerifyOrQuit(Preference::From2BitUint(0x0 | 0xfc) == Preference::kMedium);
VerifyOrQuit(Preference::From2BitUint(0x3 | 0xfc) == Preference::kLow);
VerifyOrQuit(Preference::From2BitUint(0x2 | 0xfc) == Preference::kMedium);
// IsValid()
VerifyOrQuit(Preference::IsValid(Preference::kHigh));
VerifyOrQuit(Preference::IsValid(Preference::kMedium));
VerifyOrQuit(Preference::IsValid(Preference::kLow));
VerifyOrQuit(!Preference::IsValid(2));
VerifyOrQuit(!Preference::IsValid(-2));
VerifyOrQuit(!Preference::IsValid(127));
VerifyOrQuit(!Preference::IsValid(-128));
// Is2BitUintValid
VerifyOrQuit(Preference::Is2BitUintValid(0x1));
VerifyOrQuit(Preference::Is2BitUintValid(0x0));
VerifyOrQuit(Preference::Is2BitUintValid(0x3));
VerifyOrQuit(!Preference::Is2BitUintValid(0x2));
VerifyOrQuit(Preference::Is2BitUintValid(0x1 | 4));
VerifyOrQuit(Preference::Is2BitUintValid(0x0 | 4));
VerifyOrQuit(Preference::Is2BitUintValid(0x3 | 4));
VerifyOrQuit(!Preference::Is2BitUintValid(0x2 | 4));
VerifyOrQuit(Preference::Is2BitUintValid(0x1 | 0xfc));
VerifyOrQuit(Preference::Is2BitUintValid(0x0 | 0xfc));
VerifyOrQuit(Preference::Is2BitUintValid(0x3 | 0xfc));
VerifyOrQuit(!Preference::Is2BitUintValid(0x2 | 0xfc));
printf("TestPreference() passed\n");
}
} // namespace ot
int main(void)
@@ -161,6 +222,7 @@ int main(void)
ot::TestSerialNumber<uint32_t>("uint32_t");
ot::TestSerialNumber<uint64_t>("uint64_t");
ot::TestNumUtils();
ot::TestPreference();
printf("\nAll tests passed.\n");
return 0;
}