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J. Nick Koston
d8e586609f
Replace snprintf("%.*f") with integer-based formatting for finite
float values with accuracy_decimals 0-3 (covers virtually all sensor
usage). Falls back to snprintf for higher accuracy or NaN/Inf.
Uses lrint() with double cast for the multiply to match snprintf's
rounding behavior exactly. The fast path avoids snprintf's heavy
float formatting machinery entirely.
Also optimizes value_accuracy_with_uom_to_buf to append the UOM
string directly instead of going through snprintf.
Adds C++ unit tests that verify output matches snprintf for a range
of values including edge cases.
Benchmark: 92,961ns -> 6,484ns (14.3x faster, 2000 iterations).
Tests for ESPHome
This directory contains some tests for ESPHome.
At the moment, all the tests only work by simply executing
esphome over some YAML files that are made to test
whether the yaml gets converted to the proper C++ code.
Of course this is all just very high-level and things like unit tests would be much better. So if you have time and know how to set up a unit testing framework for python, please do give it a try.
When adding entries in test_.yaml files we usually need only
one file updated, unless conflicting code is generated for
different configurations, e.g. wifi and ethernet cannot
be tested on the same device.
Current test_.yaml file contents.
| Test name | Platform | Network | BLE |
|---|---|---|---|
| test1.yaml | ESP32 | wifi | None |
| test2.yaml | ESP32 | ethernet | esp32_ble_tracker |
| test3.yaml | ESP8266 | wifi | N/A |
| test4.yaml | ESP32 | ethernet | None |
| test5.yaml | ESP32 | wifi | ble_server |
| test6.yaml | RP2040 | wifi | N/A |
| test7.yaml | ESP32-C3 | wifi | N/A |
| test8.yaml | ESP32-S3 | wifi | None |
| test10.yaml | ESP32 | wifi | None |