chore: add test and update docs

Author: zeldan

.github/workflows/rust.yml

@@ -16,7 +16,9 @@ jobs:
 
     steps:
     - uses: actions/checkout@v4
+
     - name: Build
       run: cargo build --verbose
+
     - name: Run tests
       run: cargo test --verbose

Cargo.lock

@@ -13,6 +13,9 @@ keywords = ["embedded", "no-std", "dht11", "dht20", "dht22"]
 [dependencies]
 embedded-hal = "1.0.0"
 
+[dev-dependencies]
+embedded-hal-mock = "0.11.1"
+
 [lib]
 doctest = false  
 

Cargo.toml

@@ -1,16 +1,17 @@
 ![build workflow](https://github.com/rust-dd/embedded-dht-rs/actions/workflows/rust.yml/badge.svg)
 [![Crates.io](https://img.shields.io/crates/v/embedded-dht-rs?style=flat-square)](https://crates.io/crates/embedded-dht-rs)
 ![Crates.io](https://img.shields.io/crates/l/embedded-dht-rs?style=flat-square)
+[![API](https://docs.rs/embedded-dht-rs/badge.svg)](https://docs.rs/embedded-dht-rs)
 
 # embedded-dht-rs
 
-Welcome to `embedded-dht-rs`, a Rust library designed to make working with DHT sensors a breeze!
+`embedded-dht-rs` is a Rust library designed to simplify interfacing with DHT sensors in embedded systems.
 
-This library only depends on `embedded_hal`, making it versatile and compatible with virtually any microcontroller.
+This library is `#![no_std]` and depends only on `embedded_hal`, making it versatile and compatible with virtually any microcontroller.
 
 **Support for DHT11, DHT20, and DHT22 Sensors**: All three sensors are fully implemented and ready for use.
 
-We’ve tested it with the ESP32-WROOM, and you can find a detailed example below to help you get started.
+The library has been tested with the ESP32-WROOM, and a detailed example is provided below to help you get started.
 
 ## Getting Started
 
@@ -25,6 +26,10 @@ Here are some general tutorials that provide brief introductions to embedded pro
 
 ### Example - ESP32
 
+```rust
+cargo add cargo add embedded-dht-rs
+```
+
 ```rust
 #![no_std]
 #![no_main]

README.md

@@ -73,3 +73,67 @@ impl<P: InputPin + OutputPin, D: DelayNs> Dht<P, D> {
         Ok(())
     }
 }
+
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+    use embedded_hal_mock::eh1::digital::{Mock, State, Transaction as PinTransaction};
+    use embedded_hal_mock::eh1::delay::NoopDelay as MockNoop;
+
+    #[test]
+    fn test_read_byte() {
+    // Set up the pin transactions to mock the behavior of the sensor during the reading of a byte.
+    // Each bit read from the sensor starts with a High state that lasts long enough
+    // to signify the bit, followed by reading whether it stays High (bit 1) or goes Low (bit 0).
+    let expectations = [
+        // Bit 1 - 0
+        PinTransaction::get(State::High),
+        PinTransaction::get(State::Low), 
+
+        // Bit 2 - 1
+        PinTransaction::get(State::High),
+        PinTransaction::get(State::High), 
+        PinTransaction::get(State::Low),
+
+        // Bit 3 - 0
+        PinTransaction::get(State::High),
+        PinTransaction::get(State::Low), 
+
+        // Bit 4 - 1
+        PinTransaction::get(State::High),
+        PinTransaction::get(State::High),
+        PinTransaction::get(State::Low),
+
+        // Bit 5 - 0
+        PinTransaction::get(State::High),
+        PinTransaction::get(State::Low), 
+
+        // Bit 6 - 1
+        PinTransaction::get(State::High),
+        PinTransaction::get(State::High),
+        PinTransaction::get(State::Low), 
+
+        // Bit 7 - 1
+        PinTransaction::get(State::High),
+        PinTransaction::get(State::High),
+        PinTransaction::get(State::Low), 
+
+        // Bit 8 - 1
+        PinTransaction::get(State::High),
+        PinTransaction::get(State::High),
+        PinTransaction::get(State::Low), 
+        
+    ];
+
+        let mock_pin = Mock::new(&expectations);
+        let mock_delay = MockNoop::new();
+
+        let mut dht = Dht::new(mock_pin, mock_delay);
+
+        let result = dht.read_byte().unwrap();
+        assert_eq!(result, 0b01010111);
+        
+        dht.pin.done();
+    }
+}