From 522c4af42b46c8006beac2719aaacf9114a227bd Mon Sep 17 00:00:00 2001 From: zimmersandro Date: Fri, 27 Mar 2026 15:41:17 +0100 Subject: [PATCH] feat: practice for testing. test: test case for testing tutorial --- src/tutorial/testing/practice/__init__.py | 0 src/tutorial/testing/practice/bmi.py | 16 ++++++++ .../testing/practice/catching_exeptions.py | 29 +++++++++++++++ .../testing/practice/kata_list_filtering.py | 14 +++++++ .../testing/practice/pandas_filter_rows.py | 37 +++++++++++++++++++ src/tutorial/testing/practice/vowel_count.py | 18 +++++++++ .../test_tutorial/test_kata_list_filtering.py | 5 +++ 7 files changed, 119 insertions(+) create mode 100644 src/tutorial/testing/practice/__init__.py create mode 100644 src/tutorial/testing/practice/bmi.py create mode 100644 src/tutorial/testing/practice/catching_exeptions.py create mode 100644 src/tutorial/testing/practice/kata_list_filtering.py create mode 100644 src/tutorial/testing/practice/pandas_filter_rows.py create mode 100644 src/tutorial/testing/practice/vowel_count.py create mode 100644 tests/test_tutorial/test_kata_list_filtering.py diff --git a/src/tutorial/testing/practice/__init__.py b/src/tutorial/testing/practice/__init__.py new file mode 100644 index 0000000..e69de29 diff --git a/src/tutorial/testing/practice/bmi.py b/src/tutorial/testing/practice/bmi.py new file mode 100644 index 0000000..51086c9 --- /dev/null +++ b/src/tutorial/testing/practice/bmi.py @@ -0,0 +1,16 @@ +# Task: Schreibt für die folgende Aufgabe einige Unit-Test. Nutzt dazu für den Happy-Path einen parametrisierten Test für +# einige valide Inputs und Outputs + + +def calculate_bmi(weight_kg: float, height_m: float) -> float: + """ + Berechnet den Body Mass Index (BMI). + BMI = Gewicht (kg) / Grösse (m)^2 + """ + if weight_kg <= 0 or height_m <= 0: + raise ValueError("Gewicht und Grösse müssen positiv sein.") + return weight_kg / (height_m**2) + + +if __name__ == "__main__": + print(calculate_bmi(weight_kg=72, height_m=1.84)) diff --git a/src/tutorial/testing/practice/catching_exeptions.py b/src/tutorial/testing/practice/catching_exeptions.py new file mode 100644 index 0000000..b040155 --- /dev/null +++ b/src/tutorial/testing/practice/catching_exeptions.py @@ -0,0 +1,29 @@ +# TASK: Schreibe sinnvolle Tests für die folgende Funktion +# Schreibe Tests für die korrekte Struktur des Outputs der Funktion +# Teste, ob bei Übergabe von 'falschem' Parameter data eine Exception geworfen wird + +# https://docs.python.org/3/library/exceptions.html +# Passing arguments of the wrong type (e.g. passing a list when an int is expected) should result in a TypeError, +# but passing arguments with the wrong value (e.g. a number outside expected boundaries) should result in a ValueError. + + +def double_integers(data: list[int]) -> list[int]: + """Doubles a list of given integers + + :param data: list of integers + :return: list of doubled integers + """ + + if not isinstance(data, list): + raise TypeError("data must be a list") + if not all([isinstance(i, int) for i in data]): + raise TypeError("data may contain only integers") + + return [i * 2 for i in data] + + +if __name__ == "__main__": + + data = [1, 2, 3] + result = double_integers(data) + print(result) diff --git a/src/tutorial/testing/practice/kata_list_filtering.py b/src/tutorial/testing/practice/kata_list_filtering.py new file mode 100644 index 0000000..7b247f7 --- /dev/null +++ b/src/tutorial/testing/practice/kata_list_filtering.py @@ -0,0 +1,14 @@ +# https://www.codewars.com/kata/53dbd5315a3c69eed20002dd +# level: 7 kyu + +# In this kata you will create a function that takes a list of non-negative integers and strings and returns a new +# list with the strings filtered out. +# +# Example +# filter_list([1,2,'a','b']) == [1,2] +# filter_list([1,'a','b',0,15]) == [1,0,15] +# filter_list([1,2,'aasf','1','123',123]) == [1,2,123] + + +def filter_list(a_list): + return [i for i in a_list if isinstance(i, int)] diff --git a/src/tutorial/testing/practice/pandas_filter_rows.py b/src/tutorial/testing/practice/pandas_filter_rows.py new file mode 100644 index 0000000..baa6a14 --- /dev/null +++ b/src/tutorial/testing/practice/pandas_filter_rows.py @@ -0,0 +1,37 @@ +# https://www.codewars.com/kata/5ea2baed9345eb001e8ce394 +# 7 kyu + +# Input parameters + +# dataframe: pandas.DataFrame object +# col: target column +# func: filter function + +# Task +# Your function must return a new pandas.DataFrame object with the same columns as the original input. However, +# include only the rows whose cell values in the designated column evaluate to False by func. +# +# Input DataFrame will never be empty. The target column will always be one of the dataframe columns. Filter function +# will be a valid one. Index value must remain the same. + +# REMARK: leichte Modifikation -> es wird ausgegeben, was in der Funktion definiert wurde (True) und nicht umgekehrt. + +import pandas as pd + + +def filter_dataframe(df, col, func): + if col not in df.columns: + raise ValueError(f"Column '{col}' is not present in the DataFrame.") + mask = df[col].apply(func) + return df[mask] + + +if __name__ == "__main__": + + df = pd.DataFrame( + { + "A": [1, 2, 3, 4, 5], + } + ) + + print(filter_dataframe(df, "A", lambda x: x >= 4)) diff --git a/src/tutorial/testing/practice/vowel_count.py b/src/tutorial/testing/practice/vowel_count.py new file mode 100644 index 0000000..0cbbe2b --- /dev/null +++ b/src/tutorial/testing/practice/vowel_count.py @@ -0,0 +1,18 @@ +# https://www.codewars.com/kata/54ff3102c1bad923760001f3 +# level: 7 kyu + +# Return the number (count) of vowels in the given string. +# We will consider a, e, i, o, u as vowels for this Kata (but not y). +# The input string will only consist of lower case letters and/or spaces. + + +def get_count(inputStr): + num_vowels = 0 + for char in inputStr: + if char in "aeiouAEIOU": + num_vowels = num_vowels + 1 + return num_vowels + + +if __name__ == "__main__": + print(get_count("Hello World")) diff --git a/tests/test_tutorial/test_kata_list_filtering.py b/tests/test_tutorial/test_kata_list_filtering.py new file mode 100644 index 0000000..dbabe7a --- /dev/null +++ b/tests/test_tutorial/test_kata_list_filtering.py @@ -0,0 +1,5 @@ +from src.tutorial.testing.practice.kata_list_filtering import filter_list + + +def test_filter_list(): + filter_list([3, 5])