Added adaptive coding rate support and unit tests

test/test_adaptive_coding_rate/AdaptiveCodingRate.cpp

@@ -0,0 +1,164 @@
+#include <Arduino.h>
+#include <unity.h>
+
+#include "TestUtil.h"
+// Ensure adaptive coding rate logic is available during tests
+#ifndef USE_ADAPTIVE_CODING_RATE
+#define USE_ADAPTIVE_CODING_RATE 1
+#endif
+#include "mesh/RadioInterface.h"
+
+class TestRadio : public RadioInterface
+{
+  public:
+    bool applyForTest(const meshtastic_MeshPacket *p) { return applyAdaptiveCodingRate(p); }
+
+    uint8_t getAttempts(NodeNum from, PacketId id)
+    {
+#ifdef USE_ADAPTIVE_CODING_RATE
+        auto it = adaptiveAttempts.find(adaptiveKey(from, id));
+        return (it == adaptiveAttempts.end()) ? 0 : it->second.attempts;
+#else
+        (void)from;
+        (void)id;
+        return 0;
+#endif
+    }
+
+#ifdef USE_ADAPTIVE_CODING_RATE
+    void setAdaptiveState(NodeNum from, PacketId id, uint8_t attempts, uint32_t lastUse)
+    {
+        adaptiveAttempts[adaptiveKey(from, id)] = {attempts, lastUse};
+    }
+#endif
+
+    uint8_t currentCr() const { return cr; }
+    void setCrForTest(uint8_t value) { cr = value; }
+
+    ErrorCode send(meshtastic_MeshPacket *p) override
+    {
+        packetPool.release(p);
+        return ERRNO_OK;
+    }
+
+    uint32_t getPacketTime(uint32_t /*totalPacketLen*/, bool /*received*/ = false) override { return 0; }
+
+    bool reconfigure() override
+    {
+        reconfigureCount++;
+        lastCr = cr;
+        return true;
+    }
+
+    uint32_t reconfigureCount = 0;
+    uint8_t lastCr = 0;
+};
+
+void test_attempt_progression()
+{
+    TestRadio radio;
+    meshtastic_MeshPacket packet = {};
+    packet.from = 0xABCDEF01;
+    packet.id = 0x1;
+
+    TEST_ASSERT_FALSE(radio.applyForTest(&packet));
+    TEST_ASSERT_EQUAL_UINT8(1, radio.getAttempts(packet.from, packet.id));
+    TEST_ASSERT_EQUAL_UINT8(5, radio.currentCr());
+    TEST_ASSERT_EQUAL_UINT32(0, radio.reconfigureCount);
+
+    TEST_ASSERT_TRUE(radio.applyForTest(&packet));
+    TEST_ASSERT_EQUAL_UINT8(2, radio.getAttempts(packet.from, packet.id));
+    TEST_ASSERT_EQUAL_UINT8(7, radio.currentCr());
+    TEST_ASSERT_EQUAL_UINT32(1, radio.reconfigureCount);
+    TEST_ASSERT_EQUAL_UINT8(7, radio.lastCr);
+
+    TEST_ASSERT_TRUE(radio.applyForTest(&packet));
+    TEST_ASSERT_EQUAL_UINT8(3, radio.getAttempts(packet.from, packet.id));
+    TEST_ASSERT_EQUAL_UINT8(8, radio.currentCr());
+    TEST_ASSERT_EQUAL_UINT32(2, radio.reconfigureCount);
+    TEST_ASSERT_EQUAL_UINT8(8, radio.lastCr);
+}
+
+void test_attempts_are_per_packet()
+{
+    TestRadio radio;
+    meshtastic_MeshPacket first = {};
+    first.from = 0x1001;
+    first.id = 0xA;
+
+    meshtastic_MeshPacket second = {};
+    second.from = 0x1001;
+    second.id = 0xB;
+
+    radio.applyForTest(&first);
+    radio.applyForTest(&second);
+    radio.applyForTest(&first);
+
+    TEST_ASSERT_EQUAL_UINT8(2, radio.getAttempts(first.from, first.id));
+    TEST_ASSERT_EQUAL_UINT8(1, radio.getAttempts(second.from, second.id));
+    TEST_ASSERT_EQUAL_UINT8(7, radio.currentCr());
+}
+
+void test_clear_resets_attempts_and_rate()
+{
+    TestRadio radio;
+    meshtastic_MeshPacket packet = {};
+    packet.from = 0xCAFE;
+    packet.id = 0x55;
+
+    radio.applyForTest(&packet);
+    radio.applyForTest(&packet);
+    radio.applyForTest(&packet);
+
+    radio.reconfigureCount = 0;
+    radio.setCrForTest(8);
+    radio.clearAdaptiveCodingRateState(packet.from, packet.id);
+
+    TEST_ASSERT_TRUE(radio.applyForTest(&packet));
+    TEST_ASSERT_EQUAL_UINT8(1, radio.getAttempts(packet.from, packet.id));
+    TEST_ASSERT_EQUAL_UINT8(5, radio.currentCr());
+    TEST_ASSERT_EQUAL_UINT32(1, radio.reconfigureCount);
+}
+
+void test_prunes_expired_state()
+{
+    TestRadio radio;
+    meshtastic_MeshPacket packet = {};
+    packet.from = 0xBEEF;
+    packet.id = 0x99;
+
+    radio.applyForTest(&packet);
+#ifdef USE_ADAPTIVE_CODING_RATE
+    const uint32_t now = millis();
+    radio.setAdaptiveState(packet.from, packet.id, 3, now - (5 * 60 * 1000UL + 50));
+#endif
+    radio.reconfigureCount = 0;
+    radio.setCrForTest(5);
+
+    TEST_ASSERT_FALSE(radio.applyForTest(&packet));
+    TEST_ASSERT_EQUAL_UINT8(1, radio.getAttempts(packet.from, packet.id));
+    TEST_ASSERT_EQUAL_UINT32(0, radio.reconfigureCount);
+}
+
+void setup()
+{
+    printf("AdaptiveCodingRate test setup start\n");
+    fflush(stdout);
+    // Use minimal init to avoid pulling in SerialConsole/portduino peripherals for these logic-only tests
+    initializeTestEnvironmentMinimal();
+
+    printf("AdaptiveCodingRate test init done\n");
+    fflush(stdout);
+
+    UNITY_BEGIN();
+    RUN_TEST(test_attempt_progression);
+    RUN_TEST(test_attempts_are_per_packet);
+    RUN_TEST(test_clear_resets_attempts_and_rate);
+    RUN_TEST(test_prunes_expired_state);
+    UNITY_END();
+}
+
+void loop()
+{
+    delay(1000);
+}