diff --git a/src/macros.rs b/src/macros.rs
index 9474486..ab66838 100644
--- a/src/macros.rs
+++ b/src/macros.rs
@@ -42,12 +42,31 @@ macro_rules! random_range {
     };
 }
 
-/// Generate a random boolean with the provided probability using the
-/// provided `Random (VRD)` struct
+/// Generate a random boolean with a provided probability.
+///
+/// # Examples
+///
+/// ```
+/// #[macro_use] extern crate vrd;
+/// # use vrd::Random;
+/// # use vrd::rand_bool;
+/// # fn main() {
+/// # let mut rng = Random::new();
+/// // Generates a boolean with 50% probability of being true
+/// # let value = rand_bool!(rng, 0.5);
+/// # }
+/// ```
+///
+/// # Panics
+///
+/// Panics if probability is not between 0.0 and 1.0.
 #[macro_export]
 macro_rules! rand_bool {
     ($rng:expr, $probability:expr) => {
-        $rng.bool($probability)
+        {
+            assert!($probability >= 0.0 && $probability <= 1.0, "Probability must be between 0.0 and 1.0");
+            $rng.bool($probability)
+        }
     };
 }
 
@@ -153,3 +172,4 @@ macro_rules! rand_twist {
         $rng.twist()
     };
 }
+
diff --git a/tests/test_macros.rs b/tests/test_macros.rs
index 28996da..0d751dd 100644
--- a/tests/test_macros.rs
+++ b/tests/test_macros.rs
@@ -10,21 +10,28 @@ mod tests {
     use vrd::Random;
     use vrd::*;
 
+
     #[test]
-    fn test_random_range_macro() {
+    fn test_random_range_macro_within_bounds() {
         let mut rng = Random::new();
         let min = 10;
         let max = 20;
         let num = random_range!(rng, min, max);
-        assert!(num >= min && num < max);
+        assert!(num >= min && num <= max, "Number should be within the given range.");
     }
 
     #[test]
-    fn test_rand_bool_macro() {
+    fn test_rand_bool_macro_always_true() {
         let mut rng = Random::new();
-        let p = 1.0; // Set p to 1.0 to always generate true
-        let b = rand_bool!(rng, p);
-        assert!(b);
+        let b = rand_bool!(rng, 1.0);
+        assert!(b, "rand_bool should always return true with probability 1.0.");
+    }
+
+    #[test]
+    fn test_rand_bool_macro_always_false() {
+        let mut rng = Random::new();
+        let b = rand_bool!(rng, 0.0);
+        assert!(!b, "rand_bool should always return false with probability 0.0.");
     }
 
     #[test]
@@ -32,49 +39,48 @@ mod tests {
         let mut rng = Random::new();
         let len = 10;
         let bytes = rand_bytes!(rng, len);
-        assert_eq!(bytes.len(), len);
+        assert_eq!(bytes.len(), len, "Length of bytes should be equal to the specified length.");
     }
 
     #[test]
-    fn test_rand_char_macro() {
+    fn test_rand_char_macro_ascii_check() {
         let mut rng = Random::new();
         let c = rand_char!(rng);
         assert!(
-            c.is_ascii_lowercase()
-                || c.is_ascii_uppercase()
-                || c.is_ascii_digit()
+            c.is_ascii_lowercase() || c.is_ascii_uppercase() || c.is_ascii_digit(),
+            "Generated character should be ASCII lowercase, uppercase, or digit."
         );
     }
 
     #[test]
-    fn test_rand_choose_macro() {
+    fn test_rand_choose_macro_value_in_slice() {
         let mut rng = Random::new();
         let values = vec![1, 2, 3, 4, 5];
         let chosen = rand_choose!(rng, &values).unwrap();
-        assert!(values.contains(chosen));
+        assert!(values.contains(&chosen), "Chosen value should be in the provided slice.");
     }
 
     #[test]
-    fn test_rand_float_macro() {
+    fn test_rand_float_macro_within_bounds() {
         let mut rng = Random::new();
         let f = rand_float!(rng);
-        assert!((0.0..1.0).contains(&f));
+        assert!((0.0..1.0).contains(&f), "Generated float should be within 0.0 and 1.0.");
     }
 
     #[test]
-    fn test_rand_int_macro() {
+    fn test_rand_int_macro_within_range() {
         let mut rng = Random::new();
         let min = 10;
         let max = 20;
         let num = rand_int!(rng, min, max);
-        assert!(num >= min && num <= max);
+        assert!(num >= min && num <= max, "Generated integer should be within the specified range.");
     }
 
     #[test]
-    fn test_rand_pseudo_macro() {
+    fn test_rand_pseudo_macro_upper_bound() {
         let mut rng = Random::new();
         let p = rand_pseudo!(rng);
-        assert!(p < 4294967295);
+        assert!(p < 4294967295, "Generated pseudo random number should be less than 4294967295.");
     }
 
     #[test]
@@ -101,4 +107,39 @@ mod tests {
         let num = rng.rand();
         assert!(num < 4294967295);
     }
+
+    #[test]
+    fn test_random_range_macro_valid_range() {
+        let mut rng = Random::new();
+        let min = 10;
+        let max = 20;
+        let num = random_range!(rng, min, max);
+        assert!(num >= min && num < max, "Number should be within the given range.");
+    }
+
+    #[test]
+    fn test_rand_bool_macro_true() {
+        let mut rng = Random::new();
+        let p = 1.0; // Set p to 1.0 to always generate true
+        let b = rand_bool!(rng, p);
+        assert!(b, "The probability of 1.0 should always return true.");
+    }
+
+    #[test]
+    fn test_rand_bool_macro_false() {
+        let mut rng = Random::new();
+        let p = 0.0; // Set p to 0.0 to always generate false
+        let b = rand_bool!(rng, p);
+        assert!(!b, "The probability of 0.0 should always return false.");
+    }
+
+    #[test]
+    fn test_rand_int_macro_valid_range() {
+        let mut rng = Random::new();
+        let min = 10;
+        let max = 20;
+        let num = rand_int!(rng, min, max);
+        assert!(num >= min && num <= max, "Number should be within the given range.");
+    }
+
 }