Add more examples

Author: lpozo

python-doctest/calculations/test_file.txt

@@ -0,0 +1,19 @@
+>>> import calculations
+
+>>> calculations.add(2, 2)
+4.0
+
+>>> calculations.subtract(2, 2)
+0.0
+
+>>> calculations.multiply(2, 2)
+4.0
+
+>>> calculations.divide(2, 2)
+1.0
+
+>>> def test_add():
+...     import calculations
+...     return calculations.add(2, 4)
+>>> test_add()
+6.0

python-doctest/context.py

@@ -0,0 +1,36 @@
+# context.py
+
+total = 100
+
+
+def decrement_by(number):
+    """Decrement the global total variable by a given number.
+
+    >>> local_total = decrement_by(50)
+    >>> local_total
+    50
+
+    Changes to total don't affect the code's global scope
+    >>> total
+    100
+    """
+    global total
+    total -= number
+    return total
+
+
+def increment_by(number):
+    """Increment the global total variable by a given number.
+
+    The initial value of total's shallow copy is 50
+    >>> increment_by(10)
+    60
+
+    The local_total variable is not defined in this test
+    >>> local_total
+    Traceback (most recent call last):
+    NameError: name 'local_total' is not defined
+    """
+    global total
+    total += number
+    return total

python-doctest/failing_tests.py

@@ -0,0 +1,23 @@
+"""Sample failing tests.
+
+The output must be an integer
+>>> 5 + 7
+12.0
+
+The output must not contain quotes
+>>> print("Hello, World!")
+'Hello, World!'
+
+The output must not use double quotes
+>>> "Hello," + "World!"
+"Hello, World!"
+
+The output must not contain leading or trailing spaces
+>>> print("Hello, World!")
+  Hello, World!
+
+The traceback doesn't include the correct exception message
+>>> raise ValueError("incorrect value")
+Traceback (most recent call last):
+ValueError: invalid value
+"""

python-doctest/parametrization.py

@@ -0,0 +1,15 @@
+# even_numbers.py
+
+def get_even_numbers(numbers):
+    """Return the even numbers in a list.
+
+    >>> args = [[1, 2, 3, 4], [5, 6, 7, 8], [9, 10, 11, 12]]
+    >>> expected = [[2, 4], [6, 8], [10, 12]]
+
+    >>> for arg, expected in zip(args, expected):
+    ...     get_even_numbers(arg) == expected
+    True
+    True
+    True
+    """
+    return [number for number in numbers if number % 2 == 0]

python-doctest/user.py

@@ -0,0 +1,46 @@
+# class User:
+#     def __init__(self, name, favorite_colors):
+#         self.name = name
+#         self._favorite_colors = set(favorite_colors)
+
+#     @property
+#     def favorite_colors(self):
+#         """Return the user's favorite colors.
+
+#         Usage examples:
+#         >>> john = User("John", {"#797EF6", "#4ADEDE", "#1AA7EC"})
+#         >>> john.favorite_colors
+#         {'#1AA7EC', '#4ADEDE', '#797EF6'}
+#         """
+#         return self._favorite_colors
+
+
+# class User:
+#     def __init__(self, name, favorite_colors):
+#         self.name = name
+#         self._favorite_colors = set(favorite_colors)
+
+#     @property
+#     def favorite_colors(self):
+#         """Return the user's favorite colors.
+
+#         Usage examples:
+#         >>> john = User("John", {"#797EF6", "#4ADEDE", "#1AA7EC"})
+#         >>> sorted(john.favorite_colors)
+#         ['#1AA7EC', '#4ADEDE', '#797EF6']
+#         """
+#         return self._favorite_colors
+
+
+class User:
+    def __init__(self, name, favorite_colors):
+        """Initialize instances of User.
+
+        Usage examples:
+        >>> User(
+        ...     "John", {"#797EF6", "#4ADEDE", "#1AA7EC"}
+        ... ) # doctest: +ELLIPSIS
+        <sets.User object at 0x...>
+        """
+        self.name = name
+        self._favorite_colors = set(favorite_colors)