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source.js
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source.js
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/* global describe, it */
const CovSource = require('../lib/source')
const { TraceMap } = require('@jridgewell/trace-mapping')
require('tap').mochaGlobals()
require('should')
describe('Source', () => {
describe('relativeToOffset', () => {
it('returns an offset in the middle of a file', () => {
const sourceRaw = `const a = 99
const b = 33
for (var i = 0; i < 99; i++) {
console.info('hello world')
}
return a`
const source = new CovSource(sourceRaw, 0)
source.relativeToOffset(3, 8).should.equal(42)
})
it('returns EOF if line is greater than lines in file', () => {
const sourceRaw = `
const a = 99`
const source = new CovSource(sourceRaw, 0)
source.relativeToOffset(5, 8).should.equal(21)
})
it('returns end of line, if column offset greater than line length', () => {
const sourceRaw = `a
const a = 99`
const source = new CovSource(sourceRaw, 0)
source.relativeToOffset(2, 50).should.equal(22)
source.relativeToOffset(1, Infinity).should.equal(1)
})
it('returns empty object for out of range params', () => {
const sourceRaw = ''
const source = new CovSource(sourceRaw, 0)
source.offsetToOriginalRelative(undefined, Infinity, Infinity).should.deepEqual({})
})
it('accepts null', () => {
const sourceRaw = null
new CovSource(sourceRaw, 0).should.ok()
})
it('range crossing two sourcemaps', () => {
const sourceRaw = `\
(() => {
// hello.ts
function hello() {
console.log("hello world");
}
// greet.ts
hello();
})();
//# sourceMappingURL=greet.js.map\
`
const source = new CovSource(sourceRaw, 0)
const sourceMap = new TraceMap({
version: 3,
sources: ['../hello.ts', '../greet.ts'],
sourcesContent: ['export function hello() {\r\n console.log("hello world")\r\n}', 'import {hello} from "./hello"\r\n\r\nhello()\r\n'],
mappings: ';;AAAO,mBAAiB;AACtB,YAAQ,IAAI;AAAA;;;ACCd;',
names: []
})
source.offsetToOriginalRelative(sourceMap, 25, 97).should.deepEqual({})
})
})
for (const prefix of ['c8', 'v8']) {
describe(`ignore hint ${prefix}`, () => {
it(`ignores the next line if /* ${prefix} ignore next */ is on its own line`, () => {
const sourceRaw = `
const a = 33
/* ${prefix} ignore next */
const a = 99
`
const source = new CovSource(sourceRaw, 0)
source.lines[1].ignore.should.equal(false)
source.lines[2].ignore.should.equal(true)
source.lines[3].ignore.should.equal(true)
})
it(`ignores the next N lines if /* ${prefix} ignore next N */ is used`, () => {
const sourceRaw = `
/* ${prefix} ignore next 2 */
const a = 33
const a = 99
`
const source = new CovSource(sourceRaw, 0)
source.lines[1].ignore.should.equal(true)
source.lines[2].ignore.should.equal(true)
source.lines[3].ignore.should.equal(true)
})
it(`ignores a line that contains /* ${prefix} ignore next */`, () => {
const sourceRaw = `
const a = foo ? true /* ${prefix} ignore next */ : false
const b = 99
`
const source = new CovSource(sourceRaw, 0)
source.lines[1].ignore.should.equal(true)
source.lines[2].ignore.should.equal(false)
})
it('ignores lines between start and stop', () => {
const sourceRaw = `
/* ${prefix} ignore start */
function ignoreMe() {
// ...
}
/* ${prefix} ignore stop */
function doNotIgnoreMe() {
// ...
}
`
const source = new CovSource(sourceRaw, 0)
source.lines[1].ignore.should.equal(true)
source.lines[2].ignore.should.equal(true)
source.lines[3].ignore.should.equal(true)
source.lines[4].ignore.should.equal(true)
source.lines[5].ignore.should.equal(true)
source.lines[6].ignore.should.equal(false)
source.lines[7].ignore.should.equal(false)
source.lines[8].ignore.should.equal(false)
source.lines[9].ignore.should.equal(false)
})
it('ignore hint accepts other text content', () => {
const sourceRaw = `
const a = 33
/* ${prefix} ignore next -- reasoning why this is ignored */
const b = 99
/* ${prefix} ignore start: reasoning here */
function ignoreMe() {
// ...
}
/* ${prefix} ignore stop -- @preserve */
const c = a ? true /* ${prefix} ignore next reasoning here */ : false
/* ${prefix} ignore next 2 -- ignores next two lines */
const a = 33
const a = 99
`
const source = new CovSource(sourceRaw, 0)
source.lines[1].ignore.should.equal(false)
source.lines[2].ignore.should.equal(false)
source.lines[3].ignore.should.equal(true)
source.lines[4].ignore.should.equal(true)
source.lines[5].ignore.should.equal(false)
source.lines[6].ignore.should.equal(true)
source.lines[7].ignore.should.equal(true)
source.lines[8].ignore.should.equal(true)
source.lines[9].ignore.should.equal(true)
source.lines[10].ignore.should.equal(true)
source.lines[11].ignore.should.equal(false)
source.lines[12].ignore.should.equal(true)
source.lines[13].ignore.should.equal(false)
source.lines[14].ignore.should.equal(true)
source.lines[15].ignore.should.equal(true)
source.lines[16].ignore.should.equal(true)
})
})
}
describe('ignore hint using node:coverage', () => {
it('ignores the next line if /* node:coverage ignore next */ is on its own line', () => {
const sourceRaw = `
const a = 33
/* node:coverage ignore next */
const a = 99
`
const source = new CovSource(sourceRaw, 0)
source.lines[1].ignore.should.equal(false)
source.lines[2].ignore.should.equal(true)
source.lines[3].ignore.should.equal(true)
})
it('ignores the next N lines if /* node:coverage ignore next N */ is used', () => {
const sourceRaw = `
/* node:coverage ignore next 2 */
const a = 33
const a = 99
`
const source = new CovSource(sourceRaw, 0)
source.lines[1].ignore.should.equal(true)
source.lines[2].ignore.should.equal(true)
source.lines[3].ignore.should.equal(true)
})
it('ignores a line that contains /* node:coverage ignore next */', () => {
const sourceRaw = `
const a = foo ? true /* node:coverage ignore next */ : false
const b = 99
`
const source = new CovSource(sourceRaw, 0)
source.lines[1].ignore.should.equal(true)
source.lines[2].ignore.should.equal(false)
})
it('ignores lines between disable and enable', () => {
const sourceRaw = `
/* node:coverage disable */
function ignoreMe() {
// ...
}
/* node:coverage enable */
function doNotIgnoreMe() {
// ...
}
`
const source = new CovSource(sourceRaw, 0)
source.lines[1].ignore.should.equal(true)
source.lines[2].ignore.should.equal(true)
source.lines[3].ignore.should.equal(true)
source.lines[4].ignore.should.equal(true)
source.lines[5].ignore.should.equal(true)
source.lines[6].ignore.should.equal(false)
source.lines[7].ignore.should.equal(false)
source.lines[8].ignore.should.equal(false)
source.lines[9].ignore.should.equal(false)
})
it('ignore hint accepts other text content', () => {
const sourceRaw = `
const a = 33
/* node:coverage ignore next -- reasoning why this is ignored */
const b = 99
/* node:coverage disable: reasoning here */
function ignoreMe() {
// ...
}
/* node:coverage enable -- @preserve */
const c = a ? true /* node:coverage ignore next reasoning here */ : false
/* node:coverage ignore next 2 -- ignores next two lines */
const a = 33
const a = 99
`
const source = new CovSource(sourceRaw, 0)
source.lines[1].ignore.should.equal(false)
source.lines[2].ignore.should.equal(false)
source.lines[3].ignore.should.equal(true)
source.lines[4].ignore.should.equal(true)
source.lines[5].ignore.should.equal(false)
source.lines[6].ignore.should.equal(true)
source.lines[7].ignore.should.equal(true)
source.lines[8].ignore.should.equal(true)
source.lines[9].ignore.should.equal(true)
source.lines[10].ignore.should.equal(true)
source.lines[11].ignore.should.equal(false)
source.lines[12].ignore.should.equal(true)
source.lines[13].ignore.should.equal(false)
source.lines[14].ignore.should.equal(true)
source.lines[15].ignore.should.equal(true)
source.lines[16].ignore.should.equal(true)
})
})
})