Pytest BDD [work in progress]

PytestBDD/.gitignore

@@ -0,0 +1,2 @@
+.idea/
+__pycache__/

PytestBDD/Pipfile

@@ -0,0 +1,13 @@
+[[source]]
+url = "https://pypi.org/simple"
+verify_ssl = true
+name = "pypi"
+
+[packages]
+pytest = "*"
+pytest-bdd = "*"
+
+[dev-packages]
+
+[requires]
+python_version = "3.9"

PytestBDD/README.md

@@ -0,0 +1,2 @@
+run
+

PytestBDD/cucumbers.py

@@ -0,0 +1,45 @@
+"""
+This module contains a simple class modeling a cucumber basket.
+Cucumbers may be added or removed from the basket.
+The basket has a maximum size, however.
+"""
+
+
+class CucumberBasket:
+
+    def __init__(self, initial_count=0, max_count=10):
+        if initial_count < 0:
+            raise ValueError("Initial cucumber basket count must not be negative")
+        if max_count < 0:
+            raise ValueError("Max cucumber basket count must not be negative")
+
+        self._count = initial_count
+        self._max_count = max_count
+
+    @property
+    def count(self):
+        return self._count
+
+    @property
+    def full(self):
+        return self.count == self.max_count
+
+    @property
+    def empty(self):
+        return self.count == 0
+
+    @property
+    def max_count(self):
+        return self._max_count
+
+    def add(self, count=1):
+        new_count = self.count + count
+        if new_count > self.max_count:
+            raise ValueError("Attempted to add too many cucumbers")
+        self._count = new_count
+
+    def remove(self, count=1):
+        new_count = self.count - count
+        if new_count < 0:
+            raise ValueError("Attempted to remove too many cucumbers")
+        self._count = new_count

PytestBDD/main.py

@@ -0,0 +1,16 @@
+# This is a sample Python script.
+
+# Press ⌃R to execute it or replace it with your code.
+# Press Double ⇧ to search everywhere for classes, files, tool windows, actions, and settings.
+
+
+def print_hi(name):
+    # Use a breakpoint in the code line below to debug your script.
+    print(f'Hi, {name}')  # Press ⌘F8 to toggle the breakpoint.
+
+
+# Press the green button in the gutter to run the script.
+if __name__ == '__main__':
+    print_hi('PyCharm')
+
+# See PyCharm help at https://www.jetbrains.com/help/pycharm/

PytestBDD/tests/features/cucumbers.feature

@@ -0,0 +1,9 @@
+Feature: Cucumber Basket
+    As a gardener,
+    I want to carry cucumbers in a basket,
+    So that I don't drop them all.
+
+    Scenario: Add cucumbers to a basket
+        Given the basket has 2 cucumbers
+        When 4 cucumbers are added to the basket
+        Then the basket contains 6 cucumbers

PytestBDD/tests/step_defs/test_cucumbers_steps.py

@@ -0,0 +1,23 @@
+from pytest_bdd import scenario, given, when, then
+
+from cucumbers import CucumberBasket
+
+
+@scenario('../features/cucumbers.feature', 'Add cucumbers to a basket')
+def test_add():
+    pass
+
+
+@given("the basket has 2 cucumbers", target_fixture='basket')
+def basket():
+    return CucumberBasket(initial_count=2)
+
+
+@when("4 cucumbers are added to the basket")
+def add_cucumbers(basket):
+    basket.add(4)
+
+
+@then("the basket contains 6 cucumbers")
+def basket_has_total(basket):
+    assert basket.count == 6