# False partials in code coverage (JavaScript / Typescript) **URL:** \ **Category:** Bug Fixes\ **Created:** [June 10, 2021, 8:04pm UTC](https://community.codecov.com/t/false-partials-in-code-coverage-javascript-typescript/2957 "2021-06-10T20:04:50Z")\ **Posts on this page:** 5\ **Page:** 1
**Author:** ![jsamr](https://yyz1.discourse-cdn.com/flex029/user_avatar/community.codecov.com/jsamr/32/1355_2.png) [@jsamr](https://community.codecov.com/u/jsamr)\ **Post date:** [June 10, 2021, 8:04pm UTC](https://community.codecov.com/t/false-partials-in-code-coverage-javascript-typescript/2957/1 "2021-06-10T20:04:51Z")
### Description All the `if`, `switch` and ternary expressions are flagged as partials even though each branch is covered, resulting in a massive underrating of the total coverage. Jest reports a total branch coverage of 99.2% while Codecov, for the same commit, reports 78.42%. See for example the switch statement here: [Codecov](https://codecov.io/gh/meliorence/react-native-render-html/src/e11a1b30bf18da2d5a429efa7b9c309979f47e5c/packages/render-html/src/elements/extractImageStyleProps.ts), L14. ![image](https://canada1.discourse-cdn.com/flex029/uploads/codecov/original/2X/1/1efc6a2f98f50541364fa20b68046f8047bf0581.png) ### Commit SHAs e11a1b30bf18da2d5a429efa7b9c309979f47e5c ### Repository > **[GitHub - meliorence/react-native-render-html: iOS/Android pure javascript react-native component...](https://github.com/meliorence/react-native-render-html)** > > iOS/Android pure javascript react-native component that renders your HTML into 100% native views ### CI/CD or Build URL [https://github.com/meliorence/react-native-render-html/runs/2796786027?check\_suite\_focus=true](https://github.com/meliorence/react-native-render-html/runs/2796786027?check_suite_focus=true) ### Uploader Bash ### Codecov Output ``` /usr/bin/bash codecov.sh -n -F -Q github-action-v1.5.2 -Z -f ./packages/render-html/coverage/clover.xml _____ _ / ____ | | | | | _____ | | ______ _______ | | / _ \ / _` |/ _ \/ __/ _ \ \ / / | |___| (_) | (_| |__/ (_| (_) \ V / \ _____\___ / \ __,_|\___ |\ ___\___ / \_/ Bash-1.0.3 ==> git version 2.31.1 found ==> curl 7.68.0 (x86_64-pc-linux-gnu) libcurl/7.68.0 OpenSSL/1.1.1f zlib/1.2.11 brotli/1.0.7 libidn2/2.2.0 libpsl/0.21.0 (+libidn2/2.2.0) libssh/0.9.3/openssl/zlib nghttp2/1.40.0 librtmp/2.3 Release-Date: 2020-01-08 Protocols: dict file ftp ftps gopher http https imap imaps ldap ldaps pop3 pop3s rtmp rtsp scp sftp smb smbs smtp smtps telnet tftp Features: AsynchDNS brotli GSS-API HTTP2 HTTPS-proxy IDN IPv6 Kerberos Largefile libz NTLM NTLM_WB PSL SPNEGO SSL TLS-SRP UnixSockets ==> GitHub Actions detected. Env vars used: -> GITHUB_ACTIONS: true -> GITHUB_HEAD_REF: -> GITHUB_REF: refs/heads/master -> GITHUB_REPOSITORY: meliorence/react-native-render-html -> GITHUB_RUN_ID: 926228010 -> GITHUB_SHA: e11a1b30bf18da2d5a429efa7b9c309979f47e5c -> GITHUB_WORKFLOW: CI project root: . Yaml not found, that's ok! Learn more at http://docs.codecov.io/docs/codecov-yaml -> Found 1 reports ==> Detecting git/mercurial file structure ==> Reading reports + ./packages/render-html/coverage/clover.xml bytes=57661 ==> Appending adjustments https://docs.codecov.io/docs/fixing-reports + Found adjustments ==> Gzipping contents 132K /tmp/codecov.cP5OCN.gz ==> Uploading reports url: https://codecov.io query: branch=master&commit=e11a1b30bf18da2d5a429efa7b9c309979f47e5c&build=926228010&build_url=http%3A%2F%2Fgithub.com%2Fmeliorence%2Freact-native-render-html%2Factions%2Fruns%2F926228010&name=&tag=&slug=meliorence%2Freact-native-render-html&service=github-actions&flags=&pr=&job=CI&cmd_args=n,F,Q,Z,f -> Pinging Codecov https://codecov.io/upload/v4?package=github-action-v1.5.2-1.0.3&token=secret&branch=master&commit=e11a1b30bf18da2d5a429efa7b9c309979f47e5c&build=926228010&build_url=http%3A%2F%2Fgithub.com%2Fmeliorence%2Freact-native-render-html%2Factions%2Fruns%2F926228010&name=&tag=&slug=meliorence%2Freact-native-render-html&service=github-actions&flags=&pr=&job=CI&cmd_args=n,F,Q,Z,f -> Uploading to https://storage.googleapis.com/codecov/v4/raw/2021-06-10/EC2A5C92A55FB6917FC12085982D2423/e11a1b30bf18da2d5a429efa7b9c309979f47e5c/66f3d26f-9676-4e74-8f16-cc20d552c720.txt?X-Amz-Algorithm=AWS4-HMAC-SHA256&X-Amz-Credential=GOOG1EKKHVKCKHW7KBCGM7IHR55T63V2PAVJWLVFNITJHDU5G6R5IRN3LMWJA%2F20210610%2FUS%2Fs3%2Faws4_request&X-Amz-Date=20210610T192531Z&X-Amz-Expires=10&X-Amz-SignedHeaders=host&X-Amz-Signature=767e109e366d0fdbff27ca176f42368468679e87a980330cfdaa0b8f4b38968e % Total % Received % Xferd Average Speed Time Time Time Current Dload Upload Total Spent Left Speed 0 0 0 0 0 0 0 0 --:--:-- --:--:-- --:--:-- 0 100 131k 0 0 100 131k 0 479k --:--:-- --:--:-- --:--:-- 479k -> Reports have been successfully queued for processing at https://codecov.io/github/meliorence/react-native-render-html/commit/e11a1b30bf18da2d5a429efa7b9c309979f47e5c ``` ### Expected Results A codecov coverage above 96-97% (because partial hits are considered missed, I expect a lower rate than with Jest). ### Actual Results A codecov coverage of 78.42%. ### Additional Information Might be related to [Ternary coverage in JavaScript](https://community.codecov.com/t/ternary-coverage-in-javascript/2901) ---
**Author:** ![tom](https://yyz1.discourse-cdn.com/flex029/user_avatar/community.codecov.com/tom/32/8_2.png) [@tom](https://community.codecov.com/u/tom)\ **Post date:** [June 11, 2021, 6:26pm UTC](https://community.codecov.com/t/false-partials-in-code-coverage-javascript-typescript/2957/2 "2021-06-11T18:26:44Z")
@jsamr, this is actually coming from the Jest report. See the raw [coverage report](https://codecov.io/gh/meliorence/react-native-render-html/commit/e11a1b30bf18da2d5a429efa7b9c309979f47e5c/build). ```auto ``` Since `falsecount` is 0, it is considered only partially covered. Codecov considers partial coverage as [not covered](https://docs.codecov.io/docs/frequently-asked-questions#how-is-coverage-calculated). ---
**Author:** ![jsamr](https://yyz1.discourse-cdn.com/flex029/user_avatar/community.codecov.com/jsamr/32/1355_2.png) [@jsamr](https://community.codecov.com/u/jsamr)\ **Post date:** [June 11, 2021, 7:40pm UTC](https://community.codecov.com/t/false-partials-in-code-coverage-javascript-typescript/2957/3 "2021-06-11T19:40:32Z")
But a switch statement would always have 0 “falsecount”, wouldn’t it? Is jest misusing the conditional here? What tag should it use instead? ---
**Author:** ![jsamr](https://yyz1.discourse-cdn.com/flex029/user_avatar/community.codecov.com/jsamr/32/1355_2.png) [@jsamr](https://community.codecov.com/u/jsamr)\ **Post date:** [June 11, 2021, 9:16pm UTC](https://community.codecov.com/t/false-partials-in-code-coverage-javascript-typescript/2957/4 "2021-06-11T21:16:32Z")
The same file with same commit gives a 100% branch coverage with istanbul (which is used by jest): ![image](https://canada1.discourse-cdn.com/flex029/uploads/codecov/original/2X/a/a7491bc14a9bc0f867d158f183afda0bd63a2d6f.png) ---
**Author:** ![tom](https://yyz1.discourse-cdn.com/flex029/user_avatar/community.codecov.com/tom/32/8_2.png) [@tom](https://community.codecov.com/u/tom)\ **Post date:** [August 25, 2021, 3:56am UTC](https://community.codecov.com/t/false-partials-in-code-coverage-javascript-typescript/2957/5 "2021-08-25T03:56:44Z")
@jsamr, I’m sorry this got lost from me. I’m not sure why the switch statement would have 0 “falsecount”. I’m guessing there is some nuance that I don’t understand. [This](https://stackoverflow.com/questions/42642840/why-is-jacoco-not-covering-my-string-switch-statements) stackoverflow post might be useful. I realize it’s been awhile, are you still experiencing an issue here?