diff --git a/boolean_algebra/and_gate.py b/boolean_algebra/and_gate.py
index 834116772ee7..f0fd45c9f81e 100644
--- a/boolean_algebra/and_gate.py
+++ b/boolean_algebra/and_gate.py
@@ -32,19 +32,7 @@ def and_gate(input_1: int, input_2: int) -> int:
     return int((input_1, input_2).count(0) == 0)
 
 
-def test_and_gate() -> None:
-    """
-    Tests the and_gate function
-    """
-    assert and_gate(0, 0) == 0
-    assert and_gate(0, 1) == 0
-    assert and_gate(1, 0) == 0
-    assert and_gate(1, 1) == 1
-
-
 if __name__ == "__main__":
-    test_and_gate()
-    print(and_gate(1, 0))
-    print(and_gate(0, 0))
-    print(and_gate(0, 1))
-    print(and_gate(1, 1))
+    import doctest
+
+    doctest.testmod()
diff --git a/boolean_algebra/imply_gate.py b/boolean_algebra/imply_gate.py
index 151a7ad6439a..b64ebaceb306 100644
--- a/boolean_algebra/imply_gate.py
+++ b/boolean_algebra/imply_gate.py
@@ -34,7 +34,6 @@ def imply_gate(input_1: int, input_2: int) -> int:
 
 
 if __name__ == "__main__":
-    print(imply_gate(0, 0))
-    print(imply_gate(0, 1))
-    print(imply_gate(1, 0))
-    print(imply_gate(1, 1))
+    import doctest
+
+    doctest.testmod()
diff --git a/boolean_algebra/nand_gate.py b/boolean_algebra/nand_gate.py
index ea3303d16b25..80f9d12db89a 100644
--- a/boolean_algebra/nand_gate.py
+++ b/boolean_algebra/nand_gate.py
@@ -30,18 +30,7 @@ def nand_gate(input_1: int, input_2: int) -> int:
     return int((input_1, input_2).count(0) != 0)
 
 
-def test_nand_gate() -> None:
-    """
-    Tests the nand_gate function
-    """
-    assert nand_gate(0, 0) == 1
-    assert nand_gate(0, 1) == 1
-    assert nand_gate(1, 0) == 1
-    assert nand_gate(1, 1) == 0
-
-
 if __name__ == "__main__":
-    print(nand_gate(0, 0))
-    print(nand_gate(0, 1))
-    print(nand_gate(1, 0))
-    print(nand_gate(1, 1))
+    import doctest
+
+    doctest.testmod()
diff --git a/boolean_algebra/nimply_gate.py b/boolean_algebra/nimply_gate.py
index 6e34332d9112..68e82c8db8d9 100644
--- a/boolean_algebra/nimply_gate.py
+++ b/boolean_algebra/nimply_gate.py
@@ -34,7 +34,6 @@ def nimply_gate(input_1: int, input_2: int) -> int:
 
 
 if __name__ == "__main__":
-    print(nimply_gate(0, 0))
-    print(nimply_gate(0, 1))
-    print(nimply_gate(1, 0))
-    print(nimply_gate(1, 1))
+    import doctest
+
+    doctest.testmod()
diff --git a/boolean_algebra/not_gate.py b/boolean_algebra/not_gate.py
index eb85e9e44cd3..cfa74cf42204 100644
--- a/boolean_algebra/not_gate.py
+++ b/boolean_algebra/not_gate.py
@@ -24,14 +24,7 @@ def not_gate(input_1: int) -> int:
     return 1 if input_1 == 0 else 0
 
 
-def test_not_gate() -> None:
-    """
-    Tests the not_gate function
-    """
-    assert not_gate(0) == 1
-    assert not_gate(1) == 0
-
-
 if __name__ == "__main__":
-    print(not_gate(0))
-    print(not_gate(1))
+    import doctest
+
+    doctest.testmod()
diff --git a/boolean_algebra/or_gate.py b/boolean_algebra/or_gate.py
index aa7e6645e33f..0fd4e5a5dc18 100644
--- a/boolean_algebra/or_gate.py
+++ b/boolean_algebra/or_gate.py
@@ -29,18 +29,7 @@ def or_gate(input_1: int, input_2: int) -> int:
     return int((input_1, input_2).count(1) != 0)
 
 
-def test_or_gate() -> None:
-    """
-    Tests the or_gate function
-    """
-    assert or_gate(0, 0) == 0
-    assert or_gate(0, 1) == 1
-    assert or_gate(1, 0) == 1
-    assert or_gate(1, 1) == 1
-
-
 if __name__ == "__main__":
-    print(or_gate(0, 1))
-    print(or_gate(1, 0))
-    print(or_gate(0, 0))
-    print(or_gate(1, 1))
+    import doctest
+
+    doctest.testmod()
diff --git a/boolean_algebra/xnor_gate.py b/boolean_algebra/xnor_gate.py
index 45ab2700ec35..05b756da2960 100644
--- a/boolean_algebra/xnor_gate.py
+++ b/boolean_algebra/xnor_gate.py
@@ -31,18 +31,7 @@ def xnor_gate(input_1: int, input_2: int) -> int:
     return 1 if input_1 == input_2 else 0
 
 
-def test_xnor_gate() -> None:
-    """
-    Tests the xnor_gate function
-    """
-    assert xnor_gate(0, 0) == 1
-    assert xnor_gate(0, 1) == 0
-    assert xnor_gate(1, 0) == 0
-    assert xnor_gate(1, 1) == 1
-
-
 if __name__ == "__main__":
-    print(xnor_gate(0, 0))
-    print(xnor_gate(0, 1))
-    print(xnor_gate(1, 0))
-    print(xnor_gate(1, 1))
+    import doctest
+
+    doctest.testmod()
diff --git a/boolean_algebra/xor_gate.py b/boolean_algebra/xor_gate.py
index db4f5b45c3c6..f3922e426e3d 100644
--- a/boolean_algebra/xor_gate.py
+++ b/boolean_algebra/xor_gate.py
@@ -31,16 +31,7 @@ def xor_gate(input_1: int, input_2: int) -> int:
     return (input_1, input_2).count(0) % 2
 
 
-def test_xor_gate() -> None:
-    """
-    Tests the xor_gate function
-    """
-    assert xor_gate(0, 0) == 0
-    assert xor_gate(0, 1) == 1
-    assert xor_gate(1, 0) == 1
-    assert xor_gate(1, 1) == 0
-
-
 if __name__ == "__main__":
-    print(xor_gate(0, 0))
-    print(xor_gate(0, 1))
+    import doctest
+
+    doctest.testmod()