test: cover the frame codec and command names

Builds SomfyFrame.cpp in the native env, with a minimal String and
no-op ESP_LOGx in the stubs, and tests:

- a fixed 56-bit frame, byte for byte, so what goes on air is pinned
- encode/decode round trips for 56-bit, 80-bit (repeats, Favorite,
  Stop, steps, Toggle), RTW and RTV frames
- rejection of bad checksums, addresses, rolling codes, keys and
  80-bit parity
- repeat/synonym tracking in copy()
- parsing and naming of commands

The command-name round trip fails: names the firmware reports, such as
"Step Up" and "My+Up", parse back to the wrong command.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
This commit is contained in:
cjkas 2026-10-11 13:20:39 +02:00
parent bb16c90a5a
commit 3774aba45c
4 changed files with 304 additions and 1 deletions

View file

@ -101,7 +101,7 @@ lib_deps =
platform = native platform = native
test_framework = unity test_framework = unity
test_build_src = yes test_build_src = yes
build_src_filter = -<*> +<Utils.cpp> build_src_filter = -<*> +<Utils.cpp> +<SomfyFrame.cpp>
build_flags = build_flags =
-std=gnu++17 -std=gnu++17
-Isrc -Isrc

View file

@ -9,6 +9,10 @@
#include <cstdlib> #include <cstdlib>
#include <cstring> #include <cstring>
#include <ctime> #include <ctime>
#include <string>
#include <type_traits>
typedef uint8_t byte;
// Fixed so anything formatted from it is deterministic. // Fixed so anything formatted from it is deterministic.
inline unsigned long millis() { return 0; } inline unsigned long millis() { return 0; }
@ -17,4 +21,27 @@ inline bool getLocalTime(struct tm *info, uint32_t ms = 5000) {
time_t now = time(nullptr); time_t now = time(nullptr);
return localtime_r(&now, info) != nullptr; return localtime_r(&now, info) != nullptr;
} }
// The parts of Arduino's String the firmware code under test uses.
class String {
std::string _s;
public:
String() {}
String(const char *s) : _s(s ? s : "") {}
String(const std::string &s) : _s(s) {}
// Arduino formats integers in decimal.
template<typename T, typename std::enable_if<std::is_integral<T>::value, int>::type = 0>
explicit String(T val) : _s(std::to_string(val)) {}
const char *c_str() const { return _s.c_str(); }
unsigned int length() const { return (unsigned int)_s.length(); }
bool equalsIgnoreCase(const String &other) const {
if(_s.length() != other._s.length()) return false;
for(size_t i = 0; i < _s.length(); i++)
if(tolower((unsigned char)_s[i]) != tolower((unsigned char)other._s[i])) return false;
return true;
}
bool startsWith(const String &prefix) const { return _s.compare(0, prefix._s.length(), prefix._s) == 0; }
friend String operator+(const String &a, const String &b) { return String(a._s + b._s); }
friend bool operator==(const String &a, const String &b) { return a._s == b._s; }
};
#endif #endif

10
test/stubs/esp_log.h Normal file
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@ -0,0 +1,10 @@
// Logging stand-in for the native test env. The format arguments are never
// evaluated so tests stay quiet and logging can't affect what they check.
#ifndef esp_log_stub_h
#define esp_log_stub_h
#define ESP_LOGE(tag, ...) ((void)(tag))
#define ESP_LOGW(tag, ...) ((void)(tag))
#define ESP_LOGI(tag, ...) ((void)(tag))
#define ESP_LOGD(tag, ...) ((void)(tag))
#define ESP_LOGV(tag, ...) ((void)(tag))
#endif

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@ -0,0 +1,266 @@
#include <unity.h>
#include "SomfyFrame.h"
#define ASSERT_CMD(expected, actual) TEST_ASSERT_EQUAL_HEX8(static_cast<uint8_t>(expected), static_cast<uint8_t>(actual))
static const uint32_t ADDR = 0x123456;
// A frame as SomfyRemote::sendCommand builds it.
static somfy_frame_t makeFrame(somfy_commands cmd, uint32_t address, uint16_t rollingCode,
uint8_t bitLength = 56, radio_proto proto = radio_proto::RTS) {
somfy_frame_t f;
f.cmd = cmd;
f.remoteAddress = address;
f.rollingCode = rollingCode;
f.bitLength = bitLength;
f.proto = proto;
f.encKey = 0xA0 | (rollingCode & 0x0F);
return f;
}
// What a receiver makes of the bytes, given it heard the same frame length.
static somfy_frame_t decode(const byte *payload, uint8_t bitLength) {
byte buf[10];
memcpy(buf, payload, sizeof(buf));
somfy_frame_t d;
d.bitLength = bitLength;
d.decodeFrame(buf);
return d;
}
static somfy_frame_t roundTrip(somfy_frame_t f) {
byte buf[10];
f.encodeFrame(buf);
return decode(buf, f.bitLength);
}
void setUp() {}
void tearDown() {}
/*********************************************************************
* Encoding
********************************************************************/
static void test_encode_56bit_golden_frame() {
// Pins exactly what goes on air. If this changes, find out why before
// updating the bytes: motors reject frames that are encoded differently.
somfy_frame_t f = makeFrame(somfy_commands::Up, ADDR, 0x0102);
f.encKey = 0xA7;
byte buf[10];
f.encodeFrame(buf);
const byte expected[10] = {0xA7, 0x8C, 0x8D, 0x8F, 0x9D, 0xA9, 0xFF, 0x84, 0x00, 0x1D};
TEST_ASSERT_EQUAL_HEX8_ARRAY(expected, buf, 10);
somfy_frame_t d = decode(expected, 56);
TEST_ASSERT_TRUE(d.valid);
ASSERT_CMD(somfy_commands::Up, d.cmd);
TEST_ASSERT_EQUAL_HEX32(ADDR, d.remoteAddress);
TEST_ASSERT_EQUAL_HEX16(0x0102, d.rollingCode);
TEST_ASSERT_EQUAL_HEX8(0xA7, d.encKey);
}
static void test_round_trip_56bit_commands() {
const somfy_commands cmds[] = {
somfy_commands::My, somfy_commands::Up, somfy_commands::MyUp, somfy_commands::Down,
somfy_commands::MyDown, somfy_commands::UpDown, somfy_commands::MyUpDown, somfy_commands::Prog,
somfy_commands::SunFlag, somfy_commands::Flag, somfy_commands::Toggle, somfy_commands::Sensor
};
for(somfy_commands cmd : cmds) {
somfy_frame_t f = makeFrame(cmd, ADDR, 0x1234);
somfy_frame_t d = roundTrip(f);
TEST_ASSERT_TRUE_MESSAGE(d.valid, translateSomfyCommand(cmd).c_str());
ASSERT_CMD(cmd, d.cmd);
TEST_ASSERT_EQUAL_HEX32(ADDR, d.remoteAddress);
TEST_ASSERT_EQUAL_HEX16(0x1234, d.rollingCode);
TEST_ASSERT_EQUAL_HEX8(f.encKey, d.encKey);
TEST_ASSERT_EQUAL(radio_proto::RTS, d.proto);
}
}
static void test_round_trip_80bit_commands_and_repeats() {
const somfy_commands cmds[] = {somfy_commands::Up, somfy_commands::Down, somfy_commands::My};
for(somfy_commands cmd : cmds) {
for(uint8_t repeats : {0, 5}) {
somfy_frame_t f = makeFrame(cmd, ADDR, 0x0042, 80);
f.repeats = repeats;
byte buf[10];
f.encodeFrame(buf);
// The repeat counter is carried in byte 7.
TEST_ASSERT_EQUAL_UINT8(196 + repeats * 4, buf[7]);
somfy_frame_t d = decode(buf, 80);
TEST_ASSERT_TRUE_MESSAGE(d.valid, translateSomfyCommand(cmd).c_str());
ASSERT_CMD(cmd, d.cmd);
TEST_ASSERT_EQUAL_HEX16(0x0042, d.rollingCode);
}
}
}
static void test_round_trip_80bit_favorite_and_stop() {
// Sent as My with the real command in an extension nibble.
for(somfy_commands cmd : {somfy_commands::Favorite, somfy_commands::Stop}) {
somfy_frame_t d = roundTrip(makeFrame(cmd, ADDR, 7, 80));
TEST_ASSERT_TRUE(d.valid);
ASSERT_CMD(cmd, d.cmd);
}
}
static void test_round_trip_80bit_steps() {
for(somfy_commands cmd : {somfy_commands::StepUp, somfy_commands::StepDown}) {
for(uint8_t step : {1, 100}) {
somfy_frame_t f = makeFrame(cmd, ADDR, 7, 80);
f.stepSize = step;
somfy_frame_t d = roundTrip(f);
TEST_ASSERT_TRUE(d.valid);
ASSERT_CMD(cmd, d.cmd);
TEST_ASSERT_EQUAL_UINT8(step, d.stepSize);
}
}
}
static void test_round_trip_80bit_toggle() {
somfy_frame_t d = roundTrip(makeFrame(somfy_commands::Toggle, ADDR, 7, 80));
TEST_ASSERT_TRUE(d.valid);
ASSERT_CMD(somfy_commands::Toggle, d.cmd);
TEST_ASSERT_EQUAL_UINT8(164, d.encKey);
}
static void test_round_trip_rtw_and_rtv() {
// These protocols carry the command in the key byte.
for(radio_proto proto : {radio_proto::RTW, radio_proto::RTV}) {
for(somfy_commands cmd : {somfy_commands::Up, somfy_commands::Down}) {
somfy_frame_t d = roundTrip(makeFrame(cmd, ADDR, 9, 56, proto));
TEST_ASSERT_TRUE(d.valid);
ASSERT_CMD(cmd, d.cmd);
TEST_ASSERT_EQUAL(proto, d.proto);
}
}
}
/*********************************************************************
* Rejected frames
********************************************************************/
static void test_rejects_bad_checksum() {
byte buf[10];
makeFrame(somfy_commands::Up, ADDR, 0x1234).encodeFrame(buf);
// Byte 6 is the last obfuscated byte so the flip changes only its decoded value.
buf[6] ^= 0x01;
TEST_ASSERT_FALSE(decode(buf, 56).valid);
}
static void test_rejects_out_of_range_address() {
TEST_ASSERT_FALSE(roundTrip(makeFrame(somfy_commands::Up, 0, 0x1234)).valid);
TEST_ASSERT_FALSE(roundTrip(makeFrame(somfy_commands::Up, 0xFFFFFF, 0x1234)).valid);
}
static void test_rejects_zero_rolling_code_except_sensor() {
TEST_ASSERT_FALSE(roundTrip(makeFrame(somfy_commands::Up, ADDR, 0)).valid);
// Sensor frames carry flags in the rolling code so 0 is fine.
TEST_ASSERT_TRUE(roundTrip(makeFrame(somfy_commands::Sensor, ADDR, 0)).valid);
}
static void test_rejects_zero_key() {
somfy_frame_t f = makeFrame(somfy_commands::Up, ADDR, 0x1234);
f.encKey = 0;
TEST_ASSERT_FALSE(roundTrip(f).valid);
}
static void test_rejects_bad_80bit_parity() {
byte buf[10];
makeFrame(somfy_commands::Up, ADDR, 0x1234, 80).encodeFrame(buf);
buf[9] ^= 0x01;
TEST_ASSERT_FALSE(decode(buf, 80).valid);
}
/*********************************************************************
* Helpers
********************************************************************/
static void test_encode80Byte7_wraps() {
somfy_frame_t f;
TEST_ASSERT_EQUAL_UINT8(196, f.encode80Byte7(196, 0));
TEST_ASSERT_EQUAL_UINT8(252, f.encode80Byte7(196, 14));
// Past 255 the counter steps back by 15 repeats.
TEST_ASSERT_EQUAL_UINT8(196, f.encode80Byte7(196, 15));
TEST_ASSERT_EQUAL_UINT8(216, f.encode80Byte7(196, 20));
}
static void test_copy_counts_repeats_and_marks_synonyms() {
somfy_frame_t last = makeFrame(somfy_commands::Up, ADDR, 10);
last.processed = true;
somfy_frame_t repeat = makeFrame(somfy_commands::Up, ADDR, 10);
last.copy(repeat);
TEST_ASSERT_EQUAL_UINT8(1, last.repeats);
// Same press reported as another command: keep what was already processed.
somfy_frame_t synonym = makeFrame(somfy_commands::My, ADDR, 10);
last.copy(synonym);
TEST_ASSERT_TRUE(last.synonym);
TEST_ASSERT_TRUE(last.processed);
ASSERT_CMD(somfy_commands::My, last.cmd);
// A new press replaces it.
somfy_frame_t next = makeFrame(somfy_commands::Down, ADDR, 11);
last.copy(next);
TEST_ASSERT_FALSE(last.synonym);
TEST_ASSERT_FALSE(last.processed);
TEST_ASSERT_EQUAL_UINT16(11, last.rollingCode);
TEST_ASSERT_EQUAL_UINT8(0, last.repeats);
}
/*********************************************************************
* Command names
********************************************************************/
static void test_parse_command_names() {
// What the web UI and the Home Assistant integration send.
ASSERT_CMD(somfy_commands::Up, translateSomfyCommand(String("up")));
ASSERT_CMD(somfy_commands::Down, translateSomfyCommand(String("DOWN")));
ASSERT_CMD(somfy_commands::My, translateSomfyCommand(String("my")));
ASSERT_CMD(somfy_commands::Toggle, translateSomfyCommand(String("toggle")));
ASSERT_CMD(somfy_commands::Flag, translateSomfyCommand(String("flag")));
ASSERT_CMD(somfy_commands::SunFlag, translateSomfyCommand(String("sunflag")));
ASSERT_CMD(somfy_commands::StepUp, translateSomfyCommand(String("StepUp")));
ASSERT_CMD(somfy_commands::StepDown, translateSomfyCommand(String("StepDown")));
ASSERT_CMD(somfy_commands::Prog, translateSomfyCommand(String("Prog")));
// Short forms.
ASSERT_CMD(somfy_commands::Favorite, translateSomfyCommand(String("fav")));
ASSERT_CMD(somfy_commands::MyUpDown, translateSomfyCommand(String("mud")));
// A single hex digit is the raw command.
ASSERT_CMD(somfy_commands::Down, translateSomfyCommand(String("4")));
// Anything else falls back to My.
ASSERT_CMD(somfy_commands::My, translateSomfyCommand(String("xyz")));
ASSERT_CMD(somfy_commands::My, translateSomfyCommand(String("")));
}
static void test_command_display_names() {
TEST_ASSERT_EQUAL_STRING("Up", translateSomfyCommand(somfy_commands::Up).c_str());
TEST_ASSERT_EQUAL_STRING("My+Up", translateSomfyCommand(somfy_commands::MyUp).c_str());
TEST_ASSERT_EQUAL_STRING("Sun Flag", translateSomfyCommand(somfy_commands::SunFlag).c_str());
TEST_ASSERT_EQUAL_STRING("Step Up", translateSomfyCommand(somfy_commands::StepUp).c_str());
TEST_ASSERT_EQUAL_STRING("Favorite", translateSomfyCommand(somfy_commands::Favorite).c_str());
TEST_ASSERT_EQUAL_STRING("Unknown(13)", translateSomfyCommand(somfy_commands::UnknownD).c_str());
}
static void test_command_names_round_trip() {
// The names in shadeCommand events (and Home Assistant events) must parse
// back to the same command.
const somfy_commands cmds[] = {
somfy_commands::My, somfy_commands::Up, somfy_commands::MyUp, somfy_commands::Down,
somfy_commands::MyDown, somfy_commands::UpDown, somfy_commands::MyUpDown, somfy_commands::Prog,
somfy_commands::SunFlag, somfy_commands::Flag, somfy_commands::StepUp, somfy_commands::StepDown,
somfy_commands::Sensor, somfy_commands::Toggle, somfy_commands::Favorite, somfy_commands::Stop
};
std::string failed;
for(somfy_commands cmd : cmds) {
String name = translateSomfyCommand(cmd);
if(translateSomfyCommand(name) != cmd) failed += std::string(failed.empty() ? "" : ", ") + name.c_str();
}
TEST_ASSERT_EQUAL_STRING_MESSAGE("", failed.c_str(), "These names don't parse back to their command");
}
int main(int argc, char **argv) {
(void)argc;
(void)argv;
UNITY_BEGIN();
RUN_TEST(test_encode_56bit_golden_frame);
RUN_TEST(test_round_trip_56bit_commands);
RUN_TEST(test_round_trip_80bit_commands_and_repeats);
RUN_TEST(test_round_trip_80bit_favorite_and_stop);
RUN_TEST(test_round_trip_80bit_steps);
RUN_TEST(test_round_trip_80bit_toggle);
RUN_TEST(test_round_trip_rtw_and_rtv);
RUN_TEST(test_rejects_bad_checksum);
RUN_TEST(test_rejects_out_of_range_address);
RUN_TEST(test_rejects_zero_rolling_code_except_sensor);
RUN_TEST(test_rejects_zero_key);
RUN_TEST(test_rejects_bad_80bit_parity);
RUN_TEST(test_encode80Byte7_wraps);
RUN_TEST(test_copy_counts_repeats_and_marks_synonyms);
RUN_TEST(test_parse_command_names);
RUN_TEST(test_command_display_names);
RUN_TEST(test_command_names_round_trip);
return UNITY_END();
}