32 lines
1.0 KiB
TypeScript

/*
* C8 coverage provider specific test cases
*/
import { expect, test } from 'vitest'
import { readCoverageJson } from './utils'
test('c8 json report', async () => {
const jsonReport = await readCoverageJson()
// If this fails, you can use "npx live-server@1.2.1 ./coverage" to see coverage report
expect(jsonReport).toMatchSnapshot()
})
test('ignored code is marked as covered in the report', async () => {
const functionName = 'ignoredFunction'
const filename = '<process-cwd>/src/utils.ts'
const coverageMap = await readCoverageJson()
const fileCoverage = coverageMap[filename]
const [functionKey] = Object.entries(fileCoverage.fnMap).find(([, fn]) => fn.name === functionName)!
const functionCallCount = fileCoverage.f[functionKey]
// C8 marks excluded lines as covered, instead of removing them from report completely
expect(functionCallCount).toBe(1)
// Function should still be found from the actual sources
const utils = await import('../src/utils')
expect(utils[functionName]).toBeTypeOf('function')
})