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Mastering Hypothesis: A Comprehensive Guide

Mastering Hypothesis: A Comprehensive Guide

Table of Contents

Hypothesis Drill

Strategies

What is a strategy in Hypothesis?   drill python_hypothesis

Answer
  • A way to generate test data for a specific type of input.

How do I define a custom strategy in Hypothesis?   drill python_hypothesis

Answer
  • Using the `@st.composite` decorator.

What is the `st.integers` strategy in Hypothesis?   drill python_hypothesis

Answer
  • A strategy that generates random integers.

What is the `st.text` strategy in Hypothesis?   drill python_hypothesis

Answer
  • A strategy that generates random text.

Properties

What is a property in Hypothesis?   drill python_hypothesis

Answer
  • A statement that should hold true for all possible inputs.

How do I define a property in Hypothesis?   drill python_hypothesis

Answer
  • Using the `@given` decorator.

How do I specify the strategy for a property in Hypothesis?   drill python_hypothesis

Answer
  • By passing the strategy as an argument to the `@given` decorator.

Testing

How do I run a Hypothesis test?   drill python_hypothesis

Answer
  • Using the `pytest` command with the `–hypothesis` flag.

What happens if a Hypothesis test fails?   drill python_hypothesis

Answer
  • Hypothesis will attempt to find a minimal example that causes the test to fail.

Settings

How do I configure the number of examples Hypothesis generates?   drill python_hypothesis

Answer
  • Using the `–hypothesis-max-examples` flag.

How do I configure the timeout for Hypothesis tests?   drill python_hypothesis

Answer
  • Using the `–hypothesis-timeout` flag.

Statistics

How do I view statistics about Hypothesis tests?   drill python_hypothesis

Answer
  • Using the `–hypothesis-show-statistics` flag.

Debugging

How do I debug a Hypothesis test?   drill python_hypothesis

Answer
  • Using the `–hypothesis-verbosity` flag to increase verbosity.

Integration with Pytest

How do I use Hypothesis with Pytest?   drill python_hypothesis

Answer
  • By installing the `pytest-hypothesis` plugin.

How do I mark a Pytest test as a Hypothesis test?   drill python_hypothesis

Answer
  • Using the `@pytest.mark.hypothesis` decorator.

Author: Jason Walsh

j@wal.sh

Last Updated: 2025-07-30 13:45:27

build: 2025-12-29 20:06 | sha: 3c17632