add all remainning cases

Author: triuyen

src/number_theory/euler_totient.rs

@@ -46,12 +46,32 @@ mod tests {
         prime_3: (3, 2),
         prime_5: (5, 4),
         prime_7: (7, 6),
-        // ...
+        prime_11: (11, 10),
+        prime_13: (13, 12),
+        prime_17: (17, 16),
+        prime_19: (19, 18),
+   
+        // Small
+        small_4: (4, 2),
+        small_6: (6, 2),
+
         composite_10: (10, 4), // 2 * 5
         composite_15: (15, 8), // 3 * 5
+        composite_12: (12, 4),   // 2^2 * 3
+        composite_18: (18, 6),   // 2 * 3^2
+        composite_20: (20, 8),   // 2^2 * 5
+        composite_30: (30, 8),   // 2 * 3 * 5
         // ...
         prime_power_2_to_3: (8, 4),
         prime_power_3_to_2: (9, 6),
-        // ...
+        prime_power_2_to_4: (16, 8),   // 2^4
+        prime_power_5_to_2: (25, 20),  // 5^2
+        prime_power_3_to_3: (27, 18),  // 3^3
+        prime_power_2_to_5: (32, 16),  // 2^5
+
+        // Large numbers
+        large_50: (50, 20),      // 2 * 5^2
+        large_100: (100, 40),    // 2^2 * 5^2
+        large_1000: (1000, 400), // 2^3 * 5^3
     }
 }