Get coverage badge without uploading test results

.github/workflows/update-readme.yaml

@@ -0,0 +1,92 @@
+name: update-readme
+
+on:
+  pull_request:
+    branches: [main, master]
+
+jobs:
+  bot-job:
+    runs-on: ubuntu-latest
+
+    permissions:
+      contents: write
+      pull-requests: write
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+        with:
+          ref: ${{ github.event.pull_request.head.ref }}
+          token: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Setup Pandoc
+        uses: r-lib/actions/setup-pandoc@v2
+
+      - name: Setup R
+        uses: r-lib/actions/setup-r@v2
+        with:
+          r-version: 'release'
+          use-public-rspm: true
+
+      - name: Install R dependencies
+        uses: r-lib/actions/setup-r-dependencies@v2
+        with:
+          extra-packages: any::rmarkdown
+          needs: check
+
+      - name: List installed packages
+        run: |
+          Rscript -e "print(installed.packages()[,c('Package','Version')])"
+
+      - name: Install package
+        run: |
+          R CMD INSTALL .
+
+      - name: Render README
+        run: |
+          R -e "rmarkdown::render('README.Rmd', output_format = 'github_document')"
+          git add README.md
+
+      - name: Check staged changes
+        run: |
+          if git diff --cached --quiet --exit-code; then
+            echo "changed=false" >> $GITHUB_ENV
+          else
+            echo "changed=true" >> $GITHUB_ENV
+          fi
+
+      - name: Commit and push changes
+        if: env.changed == 'true'
+        run: |
+          git config --global user.name "github-actions[bot]"
+          git config --global user.email "github-actions[bot]@users.noreply.github.com"
+          git commit -m "Update README"
+          git push
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Comment on PR when changed
+        if: env.changed == 'true'
+        uses: actions/github-script@v7
+        with:
+          github-token: ${{ secrets.GITHUB_TOKEN }}
+          script: |
+            github.rest.issues.createComment({
+              issue_number: context.issue.number,
+              owner: context.repo.owner,
+              repo: context.repo.repo,
+              body: "Updated repo README file."
+            })
+
+      - name: Comment on PR when unchanged
+        if: env.changed == 'false'
+        uses: actions/github-script@v7
+        with:
+          github-token: ${{ secrets.GITHUB_TOKEN }}
+          script: |
+            github.rest.issues.createComment({
+              issue_number: context.issue.number,
+              owner: context.repo.owner,
+              repo: context.repo.repo,
+              body: "Repo README file is up to date. Nothing to commit."
+            })

DESCRIPTION

@@ -30,6 +30,7 @@ Imports:
     tibble,
     tidyr
 Suggests:
+    covr,
     testthat
 Remotes:
     stitam/breakpoint

README.Rmd

@@ -20,9 +20,34 @@ knitr::opts_chunk$set(
 
 <!-- badges: start -->
 
+```{r coverage, echo=FALSE}
+cov <- covr::package_coverage()
+pct <- covr::percent_coverage(cov)
+pct_label <- sprintf("%.1f%%", pct)
+
+# Choose badge color based on coverage
+col <- if (pct >= 90) {
+  "brightgreen"
+  } else if (pct >= 75) {
+    "yellow"
+  } else if (pct >= 50) {
+    "orange"
+  } else {
+    "red"
+  }
+
+badge_url <- sprintf(
+  "https://img.shields.io/badge/coverage-%s-%s",
+  URLencode(pct_label),
+  col
+)
+```
+
 [![status](https://www.repostatus.org/badges/latest/active.svg)](https://www.repostatus.org/#active)
 [![R build status](https://github.com/sbthandras/tailor/workflows/R-CMD-check/badge.svg)](https://github.com/sbthandras/tailor/actions)
-[![Coverage](https://codecov.io/github/sbthandras/tailor/graph/badge.svg?branch=main)](https://app.codecov.io/gh/sbthandras/tailor/branch/main)
+```{r coverage-badge, echo=FALSE, results='asis'}
+cat(sprintf("[![Coverage](%s)](#test-coverage)\n\n", badge_url))
+```
 [![DOI](https://img.shields.io/badge/DOI-10.64898%2F2026.02.20.706991-blue)](https://doi.org/10.64898/2026.02.20.706991)
 
 <!-- badges: end -->

README.md

@@ -8,7 +8,7 @@
 [![status](https://www.repostatus.org/badges/latest/active.svg)](https://www.repostatus.org/#active)
 [![R build
 status](https://github.com/sbthandras/tailor/workflows/R-CMD-check/badge.svg)](https://github.com/sbthandras/tailor/actions)
-[![Coverage](https://codecov.io/github/sbthandras/tailor/graph/badge.svg?branch=main)](https://app.codecov.io/gh/sbthandras/tailor/branch/main)
+[![Coverage](https://img.shields.io/badge/coverage-12.1%25-red)](#test-coverage)
 [![DOI](https://img.shields.io/badge/DOI-10.64898%2F2026.02.20.706991-blue)](https://doi.org/10.64898/2026.02.20.706991)
 
 <!-- badges: end -->
@@ -83,7 +83,7 @@ but both ranges were classified as conserved, so they were merged
 plot(ps)
 ```
 
-<img src="man/figures/README-unnamed-chunk-3-1.png" width="60%" />
+<img src="man/figures/README-unnamed-chunk-3-1.png" alt="" width="60%" />
 
 Depending on the method used for detecting breakpoints, the length of
 the identified adapter may differ. By default, `find_breakpoints()` uses
@@ -117,7 +117,7 @@ clusters <- cluster_adapters(amat)
 plot(amat, clusters = clusters)
 ```
 
-<img src="man/figures/README-unnamed-chunk-5-1.png" width="60%" />
+<img src="man/figures/README-unnamed-chunk-5-1.png" alt="" width="60%" />
 
 ## Citation