Added New Tests in Signum

maths/signum.py

@@ -7,16 +7,31 @@ def signum(num: float) -> int:
     """
     Applies signum function on the number
 
-    >>> signum(-10)
+    Custom test cases:
+    >>> signum(-20)
     -1
-    >>> signum(10)
+    >>> signum(20)
     1
     >>> signum(0)
     0
+    >>> signum("a")
+    0
+    >>> signum([])
+    0
+    >>> signum(-10)
+    -1
+    >>> signum(10)
+    1
     """
-    if num < 0:
-        return -1
-    return 1 if num else 0
+    if isinstance(num, (int, float)):
+        if num < 0:
+            return -1
+        elif num > 0:
+            return 1
+        else:
+            return 0
+    else:
+        return 0
 
 
 def test_signum() -> None:
@@ -26,6 +41,14 @@ def test_signum() -> None:
     assert signum(5) == 1
     assert signum(-5) == -1
     assert signum(0) == 0
+    assert signum(10.5) == 1
+    assert signum(-10.5) == -1
+    assert signum(1e-6) == 1
+    assert signum(-1e-6) == -1
+    assert signum(123456789) == 1
+    assert signum(-123456789) == -1
+    assert signum("hello") == 0
+    assert signum([]) == 0
 
 
 if __name__ == "__main__":