diff --git a/Cargo.lock b/Cargo.lock
index 41aea27b..add11c54 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -38,6 +38,17 @@ dependencies = [
  "num-traits",
 ]
 
+[[package]]
+name = "async-trait"
+version = "0.1.89"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9035ad2d096bed7955a320ee7e2230574d28fd3c3a0f186cbea1ff3c7eed5dbb"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
 [[package]]
 name = "autocfg"
 version = "1.5.0"
@@ -748,6 +759,12 @@ dependencies = [
  "windows-link",
 ]
 
+[[package]]
+name = "libm"
+version = "0.2.16"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b6d2cec3eae94f9f509c767b45932f1ada8350c4bdb85af2fcab4a3c14807981"
+
 [[package]]
 name = "linux-raw-sys"
 version = "0.12.1"
@@ -791,6 +808,16 @@ dependencies = [
  "autocfg",
 ]
 
+[[package]]
+name = "minicov"
+version = "0.3.8"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4869b6a491569605d66d3952bcdf03df789e5b536e5f0cf7758a7f08a55ae24d"
+dependencies = [
+ "cc",
+ "walkdir",
+]
+
 [[package]]
 name = "mio"
 version = "1.2.0"
@@ -891,6 +918,15 @@ dependencies = [
  "rawpointer",
 ]
 
+[[package]]
+name = "nu-ansi-term"
+version = "0.50.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7957b9740744892f114936ab4a57b3f487491bbeafaf8083688b16841a4240e5"
+dependencies = [
+ "windows-sys",
+]
+
 [[package]]
 name = "num-complex"
 version = "0.4.6"
@@ -916,6 +952,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "071dfc062690e90b734c0b2273ce72ad0ffa95f0c74596bc250dcfd960262841"
 dependencies = [
  "autocfg",
+ "libm",
 ]
 
 [[package]]
@@ -1805,6 +1842,16 @@ dependencies = [
  "wasm-bindgen-shared",
 ]
 
+[[package]]
+name = "wasm-bindgen-futures"
+version = "0.4.71"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "96492d0d3ffba25305a7dc88720d250b1401d7edca02cc3bcd50633b424673b8"
+dependencies = [
+ "js-sys",
+ "wasm-bindgen",
+]
+
 [[package]]
 name = "wasm-bindgen-macro"
 version = "0.2.121"
@@ -1837,6 +1884,45 @@ dependencies = [
  "unicode-ident",
 ]
 
+[[package]]
+name = "wasm-bindgen-test"
+version = "0.3.71"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "af5ec93229ad9ccd0a545a516dec76dc276613f278f6a91aa6b463d5b33d42d0"
+dependencies = [
+ "async-trait",
+ "cast",
+ "js-sys",
+ "libm",
+ "minicov",
+ "nu-ansi-term",
+ "num-traits",
+ "oorandom",
+ "serde",
+ "serde_json",
+ "wasm-bindgen",
+ "wasm-bindgen-futures",
+ "wasm-bindgen-test-macro",
+ "wasm-bindgen-test-shared",
+]
+
+[[package]]
+name = "wasm-bindgen-test-macro"
+version = "0.3.71"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3c81b9fef827e575e0e54431736d1baa0d700315d8c62cfef1f61fa3aad0cbeb"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
+[[package]]
+name = "wasm-bindgen-test-shared"
+version = "0.2.121"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4f4d8ae7ad5440360e9799dfd42857d126454a88441ddf72d288ef83fa47f527"
+
 [[package]]
 name = "wasm-encoder"
 version = "0.244.0"
@@ -1948,6 +2034,7 @@ dependencies = [
  "serde",
  "serde-wasm-bindgen",
  "wasm-bindgen",
+ "wasm-bindgen-test",
  "wickra-core",
 ]
 
diff --git a/bindings/node/src/lib.rs b/bindings/node/src/lib.rs
index 6e3ea8fa..64475761 100644
--- a/bindings/node/src/lib.rs
+++ b/bindings/node/src/lib.rs
@@ -299,12 +299,7 @@ impl StochNode {
         })
     }
     #[napi]
-    pub fn update(
-        &mut self,
-        high: f64,
-        low: f64,
-        close: f64,
-    ) -> napi::Result<Option<StochValue>> {
+    pub fn update(&mut self, high: f64, low: f64, close: f64) -> napi::Result<Option<StochValue>> {
         Ok(self
             .inner
             .update(cnd(high, low, close, 0.0)?)
@@ -423,19 +418,15 @@ impl AdxNode {
         })
     }
     #[napi]
-    pub fn update(
-        &mut self,
-        high: f64,
-        low: f64,
-        close: f64,
-    ) -> napi::Result<Option<AdxValue>> {
-        Ok(self.inner.update(cnd(high, low, close, 0.0)?).map(|o| {
-            AdxValue {
+    pub fn update(&mut self, high: f64, low: f64, close: f64) -> napi::Result<Option<AdxValue>> {
+        Ok(self
+            .inner
+            .update(cnd(high, low, close, 0.0)?)
+            .map(|o| AdxValue {
                 plus_di: o.plus_di,
                 minus_di: o.minus_di,
                 adx: o.adx,
-            }
-        }))
+            }))
     }
     #[napi]
     pub fn batch(
@@ -728,13 +719,14 @@ impl KeltnerNode {
         low: f64,
         close: f64,
     ) -> napi::Result<Option<KeltnerValue>> {
-        Ok(self.inner.update(cnd(high, low, close, 0.0)?).map(|o| {
-            KeltnerValue {
+        Ok(self
+            .inner
+            .update(cnd(high, low, close, 0.0)?)
+            .map(|o| KeltnerValue {
                 upper: o.upper,
                 middle: o.middle,
                 lower: o.lower,
-            }
-        }))
+            }))
     }
     #[napi]
     pub fn batch(
@@ -794,13 +786,14 @@ impl DonchianNode {
     }
     #[napi]
     pub fn update(&mut self, high: f64, low: f64) -> napi::Result<Option<DonchianValue>> {
-        Ok(self.inner.update(cnd(high, low, low, 0.0)?).map(|o| {
-            DonchianValue {
+        Ok(self
+            .inner
+            .update(cnd(high, low, low, 0.0)?)
+            .map(|o| DonchianValue {
                 upper: o.upper,
                 middle: o.middle,
                 lower: o.lower,
-            }
-        }))
+            }))
     }
     #[napi]
     pub fn batch(&mut self, high: Vec<f64>, low: Vec<f64>) -> napi::Result<Vec<f64>> {
@@ -968,7 +961,10 @@ impl AroonNode {
         Ok(self
             .inner
             .update(cnd(high, low, low, 0.0)?)
-            .map(|o| AroonValue { up: o.up, down: o.down }))
+            .map(|o| AroonValue {
+                up: o.up,
+                down: o.down,
+            }))
     }
     #[napi]
     pub fn batch(&mut self, high: Vec<f64>, low: Vec<f64>) -> napi::Result<Vec<f64>> {
diff --git a/bindings/wasm/src/lib.rs b/bindings/wasm/src/lib.rs
index 9355dfe3..304e44a2 100644
--- a/bindings/wasm/src/lib.rs
+++ b/bindings/wasm/src/lib.rs
@@ -442,7 +442,9 @@ impl WasmMfi {
         volume: &[f64],
     ) -> Result<Float64Array, JsError> {
         if high.len() != low.len() || low.len() != close.len() || close.len() != volume.len() {
-            return Err(JsError::new("high, low, close, volume must be equal length"));
+            return Err(JsError::new(
+                "high, low, close, volume must be equal length",
+            ));
         }
         let mut out = Vec::with_capacity(high.len());
         for i in 0..high.len() {
@@ -582,7 +584,9 @@ impl WasmVwap {
         volume: &[f64],
     ) -> Result<Float64Array, JsError> {
         if high.len() != low.len() || low.len() != close.len() || close.len() != volume.len() {
-            return Err(JsError::new("high, low, close, volume must be equal length"));
+            return Err(JsError::new(
+                "high, low, close, volume must be equal length",
+            ));
         }
         let mut out = Vec::with_capacity(high.len());
         for i in 0..high.len() {
diff --git a/crates/wickra-core/src/indicators/bollinger.rs b/crates/wickra-core/src/indicators/bollinger.rs
index 2e0ee91f..d18c7c54 100644
--- a/crates/wickra-core/src/indicators/bollinger.rs
+++ b/crates/wickra-core/src/indicators/bollinger.rs
@@ -251,6 +251,10 @@ mod tests {
         assert_eq!(bb.update(f64::INFINITY).unwrap(), last);
         // The window still holds 1..=5, so a real input slides it to 2..=6.
         let after = bb.update(6.0).unwrap();
-        assert_relative_eq!(after.middle, (2.0 + 3.0 + 4.0 + 5.0 + 6.0) / 5.0, epsilon = 1e-12);
+        assert_relative_eq!(
+            after.middle,
+            (2.0 + 3.0 + 4.0 + 5.0 + 6.0) / 5.0,
+            epsilon = 1e-12
+        );
     }
 }
diff --git a/crates/wickra-core/src/indicators/keltner.rs b/crates/wickra-core/src/indicators/keltner.rs
index 097206dd..ba5b083f 100644
--- a/crates/wickra-core/src/indicators/keltner.rs
+++ b/crates/wickra-core/src/indicators/keltner.rs
@@ -205,7 +205,10 @@ mod tests {
                     assert_relative_eq!(o.upper, m + 2.0 * av, epsilon = 1e-9);
                     assert_relative_eq!(o.lower, m - 2.0 * av, epsilon = 1e-9);
                 }
-                _ => assert!(got.is_none(), "Keltner must be None until both ready (i={i})"),
+                _ => assert!(
+                    got.is_none(),
+                    "Keltner must be None until both ready (i={i})"
+                ),
             }
         }
     }
diff --git a/crates/wickra-core/src/indicators/mfi.rs b/crates/wickra-core/src/indicators/mfi.rs
index 99f1c4b1..092c83d7 100644
--- a/crates/wickra-core/src/indicators/mfi.rs
+++ b/crates/wickra-core/src/indicators/mfi.rs
@@ -180,7 +180,10 @@ mod tests {
         for (i, v) in out.iter().enumerate().take(5) {
             assert!(v.is_none(), "candle index {i} must be None during warmup");
         }
-        assert!(out[5].is_some(), "first MFI value lands at index period (5)");
+        assert!(
+            out[5].is_some(),
+            "first MFI value lands at index period (5)"
+        );
         assert_eq!(mfi.warmup_period(), 6);
     }