pester/Pester

Features

• Automated Test Execution - Executes scripts containing test definitions and reports whether code behaves as expected through detailed console output.
• Behavior Driven Development Frameworks - Functions as a behavior-driven development framework using human-readable specifications to verify software behavior.
• Native Runtime Execution - Runs tests directly within the PowerShell runtime to leverage native language features and system-level access.
• Mock Implementations - Replaces actual function implementations with fake counterparts to isolate logic and test interactions without side effects.
• Assertion Libraries - Ships a versatile set of specialized assertions for validating code outputs, file states, and general logic.
• Interaction Verifiers - Provides utilities to verify the number of times and the specific arguments used in mocked command calls.
• Function Behavior Replacement - Intercepts function calls to return predefined values, simulating dependencies by replacing real command behavior.
• Mocking and Spying Libraries - Includes a native mocking library to replace real functions and commands with controlled implementations for isolation.
• Outcome Verification - Compares actual values against expected criteria to determine if a test passes or fails.
• PowerShell Testing Frameworks - Provides a complete framework for writing and running automated tests to validate the behavior of PowerShell scripts.
• Dependency Mocking - Replaces real function dependencies with controlled substitutes to isolate code under test.
• Command Interception - Provides a dynamic engine that replaces PowerShell commands and functions at runtime to intercept calls and control return values.
• PowerShell - Provides a dedicated framework for writing and running automated unit tests for PowerShell scripts and modules.
• State Expectation Validation - Compares current system states and values against expected values to verify that code behavior meets specific criteria.
• CI Pipeline Integrations - Provides native support for executing automated testing pipelines within continuous integration environments.
• Continuous Integration Pipelines - Integrates automated test execution into continuous integration pipelines to validate code quality before merging.
• Code Coverage Analysis - Provides tools and metrics to measure the extent to which source code is executed by a test suite.
• Code Coverage Tools - Measures the percentage of executed lines during test runs to identify untested logic and branches.
• Test Lifecycle and Execution Control - Implements mechanisms for managing test suite organization and execution flow via setup and teardown hooks.
• Test Lifecycle Hooks - Provides mechanisms for executing setup and teardown logic before and after tests to ensure environment consistency.
• Nested Setup Nodes - Organizes test suites into hierarchical blocks to manage scope and shared setup logic.
• Test Suite Organization - Offers methods for structuring and grouping individual test functions into manageable suites using nested blocks.
• Testing - BDD-style testing framework for scripts.

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