Cannot write coverage reports #31
Description
Hi, I've recently attempted moving to vue-jest from jest-vue-preprocessor. However, it seems like there's an issue with the conversion of .vue files that's blocking the coverage reports.
Here's the stack trace:
Failed to write coverage reports:
ERROR: TypeError: Cannot read property 'decl' of undefined
STACK: TypeError: Cannot read property 'decl' of undefined
at path/node_modules/istanbul-reports/lib/lcovonly/index.js:32:38
at Array.forEach (<anonymous>)
at LcovOnlyReport.onDetail (path/node_modules/istanbul-reports/lib/lcovonly/index.js:30:28)
at LcovReport.(anonymous function) [as onDetail] (path/node_modules/istanbul-reports/lib/lcov/index.js:21:24)
at Visitor.(anonymous function) [as onDetail] (path/node_modules/istanbul-lib-report/lib/tree.js:34:30)
at ReportNode.Node.visit (path/node_modules/istanbul-lib-report/lib/tree.js:123:17)
at path/node_modules/istanbul-lib-report/lib/tree.js:116:23
at Array.forEach (<anonymous>)
at visitChildren (path/node_modules/istanbul-lib-report/lib/tree.js:115:32)
at ReportNode.Node.visit (path/node_modules/istanbul-lib-report/lib/tree.js:126:5)
The reason I'm filing this here is because I have no such issues if I use jest-vue-preprocessor instead. Digging through the istanbul code gives me
var fc = node.getFileCoverage()
console.log(fc)
FileCoverage {
data:
{ path: 'unknown',
statementMap:
{ '0': [Object],
'1': [Object],
'2': [Object],
'3': [Object],
'4': [Object],
'5': [Object],
'6': [Object] },
fnMap: {},
branchMap: {},
s:
{ '0': 18,
'1': 20,
'2': 18,
'3': 20,
'4': 15,
'5': 13,
'6': 15,
'7': NaN,
'8': NaN,
'9': NaN,
'10': NaN,
'11': NaN,
'12': NaN,
'13': NaN,
'14': NaN,
'15': NaN,
'16': NaN,
'17': NaN,
'18': NaN,
'19': NaN,
'20': NaN,
'21': NaN,
'22': NaN,
'23': NaN,
'24': NaN,
'25': NaN,
'26': NaN,
'27': NaN },
f:
{ '0': NaN,
'1': NaN,
'2': NaN,
'3': NaN,
'4': NaN,
'5': NaN,
'6': NaN,
'7': NaN,
'8': NaN,
'9': NaN,
'10': NaN,
'11': NaN },
b:
{ '0': [Array],
'1': [Array],
'2': [Array],
'3': [Array],
'4': [Array],
'5': [Array],
'6': [Array],
'7': [Array],
'8': [Array],
'9': [Array],
'10': [Array],
'11': [Array],
'12': [Array],
'13': [Array] },
_coverageSchema: '332fd63041d2c1bcb487cc26dd0d5f7d97098a6c',
hash: 'd3767ca38b776b618c16aa6dc3fa8c1632bfc5e2' } }
Looks to me like the fnMap object is strangely missing. If I mess with the source code to avoid throwing errors, none of my .vue files have coverage reports on them.
- jest-vue-preprocessor has no issues reporting coverage.