feat: update sample function implementation (#89)

* test: include more samples for testing

* feat: update implementation of `fibonacci_sequence` function

Author: threeal

lib/my_fibonacci/sequence.py

@@ -3,10 +3,16 @@
 
 def fibonacci_sequence(n: int) -> list[int]:
     """Generate a Fibonacci sequence up to the given number of terms."""
-    sequence = [0, 1]
-    for _ in range(n - 1):
-        sequence.append(sequence[-1] + sequence[-2])
-    return sequence[1:]
+    if n <= 0:
+        return []
+    if n == 1:
+        return [1]
+
+    sequence = [1, 1]
+    for _ in range(n - 2):
+        sequence.append(sequence[-2] + sequence[-1])
+
+    return sequence
 
 
 __all__ = ["fibonacci_sequence"]

tests/test_sequence.py

@@ -2,6 +2,8 @@
 
 
 def test_fibonacci_sequence() -> None:
+    assert fibonacci_sequence(-1) == []
+    assert fibonacci_sequence(0) == []
     assert fibonacci_sequence(1) == [1]
     assert fibonacci_sequence(2) == [1, 1]
     assert fibonacci_sequence(5) == [1, 1, 2, 3, 5]