Security News
JavaScript Leaders Demand Oracle Release the JavaScript Trademark
In an open letter, JavaScript community leaders urge Oracle to give up the JavaScript trademark, arguing that it has been effectively abandoned through nonuse.
mutation-testing-metrics
Advanced tools
Utility function to calculate mutation testing metrics..
See mutant states and metrics on the Stryker website for more details about mutation testing metrics.
See the below example (uses TypeScript):
import { MetricsResult, calculateMutationTestMetrics } from 'mutation-testing-metrics';
import { MutationTestResult } from 'mutation-testing-report-schema';
const mutationTestReport: MutationTestResult = {
/*... Get a holds of mutation test results somehow */
};
const result: MetricsResult = calculateMutationTestMetrics(mutationTestReport);
console.log('Mutation score', result.metrics.mutationScore);
calculateMutationTestMetrics
[(MutationTestResult) => MutationTestMetricsResult
]Calculates the full mutation test metrics from both the files-under-test as well as (optionally) the test files.
The input is a mutation test result valid according to the [https://github.com/stryker-mutator/mutation-testing-elements/tree/master/packages/report-schema#readme]
Returns A MutationTestMetricsResult
that contains both the systemUnderTestMetrics
as well as the testMetrics
calculateMetrics
[(MutationTestResult) => MetricsResult
]Calculates the files-under-test metrics inside of a mutation testing report.
The input is a mutation test result valid according to the [https://github.com/stryker-mutator/mutation-testing-elements/tree/master/packages/report-schema#readme]
aggregateResultsByModule
[(Record<string, MutationTestResult>) => MutationTestResult
]Aggregates multiple reports together into a single report, grouped by module.
Input: resultsByModule
The MutationTestResult objects by module name.
Types are included and documented with TypeScript.
You can use this script to merge multiple JSON reports together.
const { aggregateResultsByModule } = require('mutation-testing-metrics');
const fs = require('fs');
const packagesRoot = './packages';
const reportsPerModule = fs
.readdirSync(packagesRoot)
.map((pkg) => [pkg, `${packagesRoot}/${pkg}/reports/mutation/mutation.json`])
.filter(([, report]) => fs.existsSync(report))
.map(([pkg, report]) => [pkg, require(report)])
.reduce((acc, [pkg, report]) => {
acc[pkg] = report;
return acc;
}, {});
const monoReport = aggregateResultsByModule(reportsPerModule);
fs.writeFileSync('./mono-report.html', reportTemplate(monoReport), 'utf-8');
function reportTemplate(report) {
const scriptContent = fs.readFileSync(require.resolve('mutation-testing-elements/dist/mutation-test-elements.js'), 'utf-8');
return `<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<script>
${scriptContent}
</script>
</head>
<body>
<mutation-test-report-app>
Your browser doesn't support <a href="https://caniuse.com/#search=custom%20elements">custom elements</a>.
Please use a latest version of an evergreen browser (Firefox, Chrome, Safari, Opera, Edge, etc).
</mutation-test-report-app>
<script>
const app = document.querySelector('mutation-test-report-app');
app.report = ${escapeHtmlTags(JSON.stringify(report))};
function updateTheme() {
document.body.style.backgroundColor = app.theme === 'dark' ? '#222' : '#fff';
}
app.addEventListener('theme-changed', updateTheme);
updateTheme();
</script>
</body>
</html>`;
}
function escapeHtmlTags(json) {
return json.replace(/</g, '<" + "');
}
3.2.0 (2024-08-07)
FAQs
Utility functions to calculate mutation testing metrics.
We found that mutation-testing-metrics demonstrated a healthy version release cadence and project activity because the last version was released less than a year ago. It has 2 open source maintainers collaborating on the project.
Did you know?
Socket for GitHub automatically highlights issues in each pull request and monitors the health of all your open source dependencies. Discover the contents of your packages and block harmful activity before you install or update your dependencies.
Security News
In an open letter, JavaScript community leaders urge Oracle to give up the JavaScript trademark, arguing that it has been effectively abandoned through nonuse.
Security News
The initial version of the Socket Python SDK is now on PyPI, enabling developers to more easily interact with the Socket REST API in Python projects.
Security News
Floating dependency ranges in npm can introduce instability and security risks into your project by allowing unverified or incompatible versions to be installed automatically, leading to unpredictable behavior and potential conflicts.