jacoco/jacoco

Features

• Code Coverage Analysis - Measures the extent to which Java source code is executed by a test suite to identify untested logic.
• Java Agents - Functions as a Java agent that monitors application execution on the fly to record coverage data.
• Code Quality Analysis Tools - Calculates cyclomatic complexity and enforces coverage thresholds to maintain software quality standards.
• Execution Tracking - Records which specific bytecode instructions and branches are executed during a test run using boolean markers.
• Bytecode-to-Source Mapping - Links executed bytecode instructions back to original source code lines and methods for report generation.
• Bytecode Instrumentation Agents - Implements bytecode instrumentation agents to inject tracking probes into compiled Java classes at runtime.
• Class Definition Hashing - Assigns a unique hash to raw class definitions to distinguish between different versions of the same class.
• Offline Bytecode Instrumentation - Modifies compiled class files before execution to enable coverage tracking in environments that prohibit runtime agents.
• Runtime Bytecode Instrumentation - Injects tracking logic into class files during execution via a Java agent to monitor runtime behavior.
• Branch Coverage Tracking - Analyzes decision statements to determine the number of executed or missed paths in the code.
• Java Instrumentation Frameworks - Provides a framework for injecting tracking probes into Java class files via runtime or offline instrumentation.
• Runtime Bytecode Instrumentation - Injects tracking probes into class files at runtime using a Java agent to monitor execution paths.
• Execution Coverage Metrics - Tracks whether at least one instruction in a method or one method in a class has been executed.
• Class Version Hashes - Assigns unique identifiers to class definitions to ensure execution data matches the correct version of the source code.
• Code Coverage Tools - Instruments bytecode to measure the percentage of Java source code executed during automated tests.
• Threshold Enforcements - Implements validation mechanisms that fail the build process if coverage percentages fall below a predefined minimum.
• Instrumentation Filters - Provides rules to include or exclude specific packages and classes from instrumentation to limit data collection.
• Runtime Metrics Extraction - Enables retrieval of execution metrics from running processes via remote network connections without interrupting the application.
• Large-Scale Codebase Analysis - Uses streaming patterns and depth-first traversals to analyze large projects with thousands of classes while maintaining low memory overhead.
• Build Tool Integrations - Provides native extensions and tasks to integrate coverage data collection into build automation systems.
• Remote Execution Data Extraction - Transmits execution metrics from a running process to an external collector via a dedicated network protocol.
• Cyclomatic Complexity Analyzers - Computes the minimum number of paths through a method to determine the test cases required for full coverage.
• Coverage Threshold Validation - Enforces minimum code coverage thresholds during the build process to ensure software meets quality standards.
• Quality Gates - Integrates with CI/CD pipelines to block code progression if specific coverage quality gates are not met.
• Visual Coverage Mapping - Displays execution data directly within code editors using visual highlights and gutter decorations.
• Report Generators - Transforms raw binary execution data into human-readable reports to identify untested sections of the application.
• Code Coverage Reportings - Compares execution metrics against source code to generate reports identifying untested lines and branches.
• أطر عمل الاختبار - Java code coverage library.

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