colszowka/simplecov
Simplecov
SimpleCov is a Ruby code coverage tool and analysis engine used to track which lines, branches, and methods of code execute during tests. It functions as a coverage threshold enforcer and test suite aggregator, recording execution data to identify untested areas of an application.
The tool distinguishes itself through the ability to merge coverage results from parallel worker processes and subprocesses into a single unified report. It supports baseline comparison to detect coverage regressions and can gather data from code executed via dynamic evaluation methods, such as those used in templating engines.
Its broader capabilities include multi-format report generation, source file grouping, and file filtering using regular expressions. The system also provides a command-line interface for displaying statistics and listing uncovered files.
Features
- Execution Tracking - Tracks which lines of Ruby code execute during tests to identify untested areas of an application.
- Code Coverage Analysis - Tracks which lines of Ruby code execute during tests to identify untested areas and ensure software quality.
- Subprocess Aggregation - Observes and merges coverage data gathered from forked or spawned child processes into a unified report.
- Threshold Enforcements - Fails test suite execution if the Ruby code coverage percentage falls below a defined minimum.
- Distributed Coverage Aggregation - Merges fragmented coverage data from parallel worker processes and multiple test suites into a single report.
- Coverage Data Aggregators - Aggregates fragmented coverage reports from parallel worker processes and subprocesses into a single unified dataset.
- Branch Execution Metrics - Records whether each branch of a conditional was exercised rather than just tracking if the line was hit.
- Branch Coverage Tracking - Measures whether every branch of a conditional was exercised to identify gaps in test logic.
- Code Coverage Tools - Provides a comprehensive tool for tracking which lines of Ruby code execute during tests.
- Test Report Aggregators - Combines coverage data from multiple test suites or parallel worker processes into a single unified report.
- Ruby Coverage API Integrations - Wraps the native Ruby coverage library to track line, branch, and method execution across the application.
- Coverage Report Formats - Transforms raw coverage statistics into various outputs including HTML web pages and machine-readable files.
- Automated Quality Assurance Suites - Enforces minimum coverage thresholds and compares baselines to prevent regressions in the codebase.
- Coverage Tracking for Evaluated Code - Captures coverage data for code executed via eval or templating engines that bypasses standard file loading.
- Method Execution Tracking - Measures whether specific method definitions were called during the test run.
- Baseline Comparisons - Calculates the percentage difference between coverage reports to detect regressions in code testing.
- Coverage Exclusions - Excludes specific files, directories, or patterns from reports using regular expressions and custom logic.
- Evaluated Code Analysis - Gathers coverage data for code executed via dynamic evaluation methods, specifically for templating engines.
- Evaluated Code Coverage - Gathers coverage data for code executed via dynamic evaluation methods, such as those used in templating engines.
- Baseline-Comparison Regression Detections - Provides baseline comparison logic to detect coverage regressions between different test snapshots.
- Code Coverage Reportings - Provides terminal commands to display coverage statistics and list uncovered files.
- Multi-Format Export - Generates coverage results in multiple formats, including browsable web pages and machine-readable data files.
- Code Analysis and Metrics - Tool for tracking and reporting test suite code coverage.
- Ruby Frameworks and Tools - Code coverage analysis for Ruby.
- Testing - Code coverage analysis tool.
Star history
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