Testing Framework & Continuous Execution · 50 min · pytest · Hypothesis · mutmut

Building a Reusable Testing Framework

One command: verify. Wraps pytest + Hypothesis + mutmut + Semgrep + Z3 into a unified framework.

Hiring signal: Engineers who can compose multiple testing tools into a unified framework demonstrate testing architecture and tooling expertise.

What you will learn

Compose the testing toolkit into a reusable Python framework
Configure verification via YAML with layer selection and thresholds
Generate markdown dashboards with pass/fail status and metrics
Wrap pytest + Hypothesis + mutmut + Semgrep + Z3 into a single verify command

The Problem

You have 13+ quality gates from 6 different tools. Each has its own command, its own output format, its own configuration. Running them all manually is tedious and error-prone. This lesson covers building a reusable Python framework that wraps all tools into a single verify command.

Framework Architecture

┌─────────────────────────────────────────────────────────────┐
│  verify --config=verify.yml                                 │
│                                                             │
│  ┌─────────────┐  ┌─────────────┐  ┌─────────────┐         │
│  │  YAML Config │  │  CLI Parser  │  │  Reporter   │         │
│  │  (layers,    │→ │  (--layer,   │→ │  (Markdown   │         │
│  │  thresholds) │  │  --output)   │  │  dashboard)  │         │
│  └─────────────┘  └─────────────┘  └─────────────┘         │
│         ↓                                          ↑         │
│  ┌─────────────────────────────────────────────────────┐   │
│  │              VerificationOrchestrator                │   │
│  │  (runs layers in order, collects results)            │   │
│  └─────────────────────────────────────────────────────┘   │
│         ↓                                                  │
│  ┌──────┐ ┌──────────┐ ┌────────┐ ┌────────┐ ┌──────────┐  │
│  │pytest│ │Hypothesis│ │ mutmut │ │Semgrep │ │   Z3     │  │
│  │      │ │          │ │        │ │        │ │          │  │
│  └──────┘ └──────────┘ └────────┘ └────────┘ └──────────┘  │
└─────────────────────────────────────────────────────────────┘

Unlock the full lesson

You've read the first 2 sections. The rest of this lesson covers YAML Configuration, Build It — plus a hands-on lab, quiz, and project artifact.

Create a free account to unlock Phase 0 and Phase 1 of every course — no credit card.