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feat: --100 #332

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merged 11 commits into from Oct 6, 2021
Merged

feat: --100 #332

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66cd626
test: --100
gr2m Oct 1, 2021
3aecef0
WIP attempt to use YARGS middleware to set branches/functions/lines/s…
gr2m Oct 1, 2021
b96dcda
comment out `yargs.middleware()` and add TODO comment
gr2m Oct 4, 2021
279276e
add `--100` workaround to `lib/commands/report.js` until the upgrade …
gr2m Oct 4, 2021
1dc1063
update snapshot for `c8 check-coverage --100` test
gr2m Oct 4, 2021
79bc20c
remove `console.log()`s used for debugging
gr2m Oct 4, 2021
244af62
remove extra space from test label
gr2m Oct 4, 2021
90505ec
check-coverage command with --100
gr2m Oct 4, 2021
c4286d1
set coverage for statements to 100%, too
gr2m Oct 4, 2021
cb7c7ed
docs(README): `--100`
gr2m Oct 4, 2021
08dff42
build: update Node 10 snapshots
bcoe Oct 6, 2021
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18 changes: 18 additions & 0 deletions lib/parse-args.js
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Expand Up @@ -107,6 +107,12 @@ function buildYargs (withCommands = false) {
description: 'check thresholds per file',
type: 'boolean'
})
.option('100', {
default: false,
group: 'Coverage thresholds',
description: 'shortcut for --check-coverage --lines 100 --functions 100 --branches 100 --statements 100',
type: 'boolean'
})
.option('temp-directory', {
describe: 'directory V8 coverage data is written to and read from',
default: process.env.NODE_V8_COVERAGE
Expand Down Expand Up @@ -145,6 +151,18 @@ function buildYargs (withCommands = false) {
})
.epilog('visit https://git.io/vHysA for list of available reporters')

yargs.middleware((argv) => {
if (!argv[100]) return argv
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return {
...argv,
branches: 100,
functions: 100,
lines: 100,
statements: 100,
}
})
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this code doesn't seem to be executed. I haven't worked with yargs middleware before but it seems like a good approach here? Do you know why the code is not executed?

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This seems like a reasonable approach to me, and seems like it should work, perhaps:


yargs.middleware((argv) => {
    if (!argv['100']) return argv

    return {
      ...argv,
      branches: 100,
      functions: 100,
      lines: 100,
      statements: 100,
    }
}

I wouldn't expect the argument key itself to be coerced into an integer.

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my problem here is that the middleware is not applied at all. I think I'm missing something obvious. Any idea what it could be?

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I tested locally, it seems like this is a bug that I fixed in yargs@17, at least it works as expected with yargs@17 ...

Unfortunately, I think we might want to hold off on dropping Node 10 until I can drop Node 10 on the libraries I manage at Google.

We can implement a less elegant version here:

https://github.com/bcoe/c8/blob/main/lib/commands/report.js#L29

Which I believe should work in the appropriate contexts (we'll want to confirm it works for the check-coverage command).

Let's add a // TODO: comment to switch to the middleware approach as soon as we can drop Node 10?


const checkCoverage = require('./commands/check-coverage')
const report = require('./commands/report')
if (withCommands) {
Expand Down
17 changes: 17 additions & 0 deletions test/integration.js
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Expand Up @@ -211,6 +211,23 @@ describe('c8', () => {
status.should.equal(1)
output.toString('utf8').should.matchSnapshot()
})

it('--100 ', () => {
const { output, status } = spawnSync(nodePath, [
c8Path,
'--exclude="test/*.js"',
'--temp-directory=tmp/check-coverage',
'--100',
nodePath,
require.resolve('./fixtures/normal')
])
console.log(`output`);
console.log(output.toString("utf8"));
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status.should.equal(1)
output.toString('utf8').should.matchSnapshot()

})
})

describe('report', () => {
Expand Down
19 changes: 19 additions & 0 deletions test/integration.js.snap
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Expand Up @@ -152,6 +152,25 @@ All files | 100 | 100 | 100 | 100 |
,"
`;

exports[`c8 check-coverage --100 1`] = `
",hey
i am a line of code
what
hey
what
hey
what
hey
-----------|---------|----------|---------|---------|-------------------
File | % Stmts | % Branch | % Funcs | % Lines | Uncovered Line #s
-----------|---------|----------|---------|---------|-------------------
All files | 83.33 | 85.71 | 60 | 83.33 |
async.js | 100 | 100 | 100 | 100 |
normal.js | 75 | 66.66 | 33.33 | 75 | 14-16,18-20
-----------|---------|----------|---------|---------|-------------------
,"
`;

exports[`c8 check-coverage allows --check-coverage when executing script 1`] = `
",hey
i am a line of code
Expand Down