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Le parti pris est ici celui de [pytest-bdd](https://pytest-bdd.readthedocs.io/en/stable/) car vous permettra de réutiliser tout ce que vous savez déjà sur [pytest](https://docs.pytest.org/). + +## Pré-requis + +Il vous faut une version de Python>=3.7. + +## Installation de [pytest-bdd](https://pytest-bdd.readthedocs.io/en/stable/) + +Vous n'utilisez pas un environnement virtuel Python ? On ne vous en voudra pas, mais ce serait top de vous y intéresser. + +Environnement virtuel ou non, il s'agit de se placer dans le dossier projet _python_ du repository puis de saisir la commande suivante : + +``` +> pip install -r requirements.txt +``` + +## Vérifier que ça fonctionne + +Il suffit de saisir la commande suivante : + +``` +> pytest +``` + +Vous pouvez essayer, c'est sans danger. Ce sera avec ce mot _pytest_ que vous lancerez tous vos tests. + +## Comment ça marche ? + +Les scénario écrit au format Gherkin sont placés dans le dossier _tests/features_. + +Les steps quant à eux se trouvent dans des fichiers python dans le dossier _tests/steps_, comme vous le feriez normalement avec [pytest](https://docs.pytest.org/). + +Allez, c'est parti regardez dans ces fichiers comment faire la glue ! + +## Ah oui, un dernier détail + +Pour éviter certaines galères avec les _Scenario Outlines_ vérifiez bien que l'encodage de vos fichiers sont en UTF-8. diff --git a/python/currency_converter/__init__.py b/python/currency_converter/__init__.py new file mode 100644 index 0000000..e69de29 diff --git a/python/currency_converter/calculator.py b/python/currency_converter/calculator.py new file mode 100644 index 0000000..4693ad3 --- /dev/null +++ b/python/currency_converter/calculator.py @@ -0,0 +1,2 @@ +def add(a, b): + return a + b diff --git a/python/requirements.txt b/python/requirements.txt new file mode 100644 index 0000000..8e7667e --- /dev/null +++ b/python/requirements.txt @@ -0,0 +1,16 @@ +attrs==22.1.0 +colorama==0.4.5 +glob2==0.7 +iniconfig==1.1.1 +Mako==1.2.3 +MarkupSafe==2.1.1 +packaging==21.3 +parse==1.19.0 +parse-type==0.6.0 +pluggy==1.0.0 +py==1.11.0 +pyparsing==3.0.9 +pytest==7.1.3 +pytest-bdd==6.0.1 +six==1.16.0 +tomli==2.0.1 diff --git a/python/tests/__init__.py b/python/tests/__init__.py new file mode 100644 index 0000000..e69de29 diff --git a/python/tests/features/calculator.feature b/python/tests/features/calculator.feature new file mode 100644 index 0000000..9e6f408 --- /dev/null +++ b/python/tests/features/calculator.feature @@ -0,0 +1,8 @@ +Feature: Calculator + Simple calculator for adding **two** numbers + + Scenario: Add two numbers + Given the first number is 50 + And the second number is 70 + When the two numbers are added + Then the result should be 120 diff --git a/python/tests/steps/__init__.py b/python/tests/steps/__init__.py new file mode 100644 index 0000000..e69de29 diff --git a/python/tests/steps/test_calculator.py b/python/tests/steps/test_calculator.py new file mode 100644 index 0000000..7a2cdb3 --- /dev/null +++ b/python/tests/steps/test_calculator.py @@ -0,0 +1,26 @@ +from pytest_bdd import given, then, when, parsers, scenarios + +from currency_converter.calculator import add + + +scenarios("../features/calculator.feature") + + +@given(parsers.parse("the first number is {first_number:d}"), target_fixture="context") +def initialize_first_number(first_number): + return {"first_number": first_number} + + +@given(parsers.parse("the second number is {second_number:d}")) +def initialize_second_number(context, second_number): + context["second_number"] = second_number + + +@when("the two numbers are added") +def add_context_numbers(context): + context["addition_result"] = add(context["first_number"], context["second_number"]) + + +@then(parsers.parse("the result should be {sum:d}")) +def check_addition(context, sum): + assert context["addition_result"] == sum