Add tests for generate_current and check_current

Also updated docs to reflect those changes

Signed-off-by: constantoine <cleo.rebert@gmail.com>

.gitignore

@@ -1,2 +1,4 @@
 /target
 Cargo.lock
+.vscode/settings.json
+cobertura.xml

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "totp-rs"
-version = "1.2.1"
+version = "1.3.0"
 authors = ["Cleo Rebert <cleo.rebert@gmail.com>"]
 edition = "2021"
 readme = "README.md"

README.md

@@ -17,7 +17,7 @@ With optional feature "serde_support", library-defined types will be Deserialize
 Add it to your `Cargo.toml`:
 ```toml
 [dependencies]
-totp-rs = "~1.2"
+totp-rs = "~1.3"
 ```
 You can then do something like:
 ```Rust
@@ -31,12 +31,9 @@ let totp = TOTP::new(
     30,
     "supersecret",
 );
-let time = SystemTime::now()
-    .duration_since(SystemTime::UNIX_EPOCH).unwrap()
-    .as_secs();
 let url = totp.get_url("user@example.com", "my-org.com");
 println!("{}", url);
-let token = totp.generate(time);
+let token = totp.generate_current().unwrap();
 println!("{}", token);
 ```
 
@@ -45,7 +42,7 @@ println!("{}", token);
 Add it to your `Cargo.toml`:
 ```toml
 [dependencies.totp-rs]
-version = "~1.2"
+version = "~1.3"
 features = ["qr"]
 ```
 You can then do something like:
@@ -67,6 +64,6 @@ println!("{}", code);
 Add it to your `Cargo.toml`:
 ```toml
 [dependencies.totp-rs]
-version = "~1.2"
+version = "~1.3"
 features = ["serde_support"]
 ```

src/lib.rs

@@ -19,12 +19,9 @@
 //!     30,
 //!     "supersecret",
 //! );
-//! let time = SystemTime::now()
-//!     .duration_since(SystemTime::UNIX_EPOCH).unwrap()
-//!     .as_secs();
 //! let url = totp.get_url("user@example.com", "my-org.com");
 //! println!("{}", url);
-//! let token = totp.generate(time);
+//! let token = totp.generate_current().unwrap();
 //! println!("{}", token);
 //! ```
 //!
@@ -165,7 +162,7 @@ impl<T: AsRef<[u8]>> TOTP<T> {
         )
     }
 
-    /// Will generate a token according to the provided timestamp in seconds
+    /// Will generate a token given the provided timestamp in seconds
     pub fn generate(&self, time: u64) -> String {
         let result: &[u8] = &self.sign(time);
         let offset = (result.last().unwrap() & 15) as usize;
@@ -183,7 +180,7 @@ impl<T: AsRef<[u8]>> TOTP<T> {
         Ok(self.generate(t))
     }
 
-    /// Will check if token is valid by current time, accounting [skew](struct.TOTP.html#structfield.skew)
+    /// Will check if token is valid given the provided timestamp in seconds, accounting [skew](struct.TOTP.html#structfield.skew)
     pub fn check(&self, token: &str, time: u64) -> bool {
         let basestep = time / self.step - (self.skew as u64);
         for i in 0..self.skew * 2 + 1 {
@@ -223,6 +220,8 @@ impl<T: AsRef<[u8]>> TOTP<T> {
     }
 
     /// Will return a qrcode to automatically add a TOTP as a base64 string. Needs feature `qr` to be enabled!
+    /// Result will be in the form of a string containing a base64-encoded png, which you can embed in HTML without needing
+    /// To store the png as a file.
     ///
     /// # Errors
     ///
@@ -248,20 +247,8 @@ impl<T: AsRef<[u8]>> TOTP<T> {
         // Draw the border
         for x in 0..image_size {
             for y in 0..image_size {
-                if y < 8*4 || y >= image_size - 8*4 {
+                if (y < 8*4 || y >= image_size - 8*4) || (x < 8*4 || x >= image_size - 8*4) {
-                    canvas.put_pixel(
+                    canvas.put_pixel(x, y, Luma([255]));
-                        x,
-                        y,
-                        Luma([255]),
-                    );
-                    continue;
-                }
-                if x < 8*4 || x >= image_size - 8*4 {
-                    canvas.put_pixel(
-                        x,
-                        y,
-                        Luma([255]),
-                    );
                 }
             }
         }
@@ -378,11 +365,20 @@ mod tests {
     }
 
     #[test]
-    fn generates_token() {
+    fn generate_token() {
         let totp = TOTP::new(Algorithm::SHA1, 6, 1, 1, "TestSecret");
         assert_eq!(totp.generate(1000).as_str(), "718996");
     }
 
+    #[test]
+    fn generate_token_current() {
+        let totp = TOTP::new(Algorithm::SHA1, 6, 1, 1, "TestSecret");
+        let time = SystemTime::now()
+            .duration_since(SystemTime::UNIX_EPOCH).unwrap()
+            .as_secs();
+        assert_eq!(totp.generate(time).as_str(), totp.generate_current().unwrap());
+    }
+
     #[test]
     fn generates_token_sha256() {
         let totp = TOTP::new(Algorithm::SHA256, 6, 1, 1, "TestSecret");
@@ -404,6 +400,13 @@ mod tests {
         assert!(!totp.check("714250", 2000));
     }
 
+    #[test]
+    fn checks_token_current() {
+        let totp = TOTP::new(Algorithm::SHA1, 6, 0, 1, "TestSecret");
+        assert!(totp.check_current(&totp.generate_current().unwrap()).unwrap());
+        assert!(!totp.check_current("bogus").unwrap());
+    }
+
     #[test]
     fn checks_token_with_skew() {
         let totp = TOTP::new(Algorithm::SHA1, 6, 1, 1, "TestSecret");