Use code coverage

.Rbuildignore

@@ -15,3 +15,4 @@ $run_dev.*
 ^.here$
 ^doc$
 ^Meta$
+^codecov\.yml$

.covrignore

@@ -0,0 +1,5 @@
+R/mod_*
+R/run_app.R
+R/app_server.R
+R/app_ui.R
+R/app_config.R

.github/workflows/test-coverage.yaml

@@ -0,0 +1,61 @@
+# Workflow derived from https://github.com/r-lib/actions/tree/v2/examples
+# Need help debugging build failures? Start at https://github.com/r-lib/actions#where-to-find-help
+on:
+  push:
+    branches: [main, master]
+  pull_request:
+    branches: [main, master]
+
+name: test-coverage
+
+permissions: read-all
+
+jobs:
+  test-coverage:
+    runs-on: ubuntu-latest
+    env:
+      GITHUB_PAT: ${{ secrets.GITHUB_TOKEN }}
+
+    steps:
+      - uses: actions/checkout@v4
+
+      - uses: r-lib/actions/setup-r@v2
+        with:
+          use-public-rspm: true
+
+      - uses: r-lib/actions/setup-r-dependencies@v2
+        with:
+          extra-packages: any::covr, any::xml2
+          needs: coverage
+
+      - name: Test coverage
+        run: |
+          cov <- covr::package_coverage(
+            quiet = FALSE,
+            clean = FALSE,
+            install_path = file.path(normalizePath(Sys.getenv("RUNNER_TEMP"), winslash = "/"), "package")
+          )
+          covr::to_cobertura(cov)
+        shell: Rscript {0}
+
+      - uses: codecov/codecov-action@v4
+        with:
+          fail_ci_if_error: ${{ github.event_name != 'pull_request' && true || false }}
+          file: ./cobertura.xml
+          plugin: noop
+          disable_search: true
+          token: ${{ secrets.CODECOV_TOKEN }}
+
+      - name: Show testthat output
+        if: always()
+        run: |
+          ## --------------------------------------------------------------------
+          find '${{ runner.temp }}/package' -name 'testthat.Rout*' -exec cat '{}' \; || true
+        shell: bash
+
+      - name: Upload test results
+        if: failure()
+        uses: actions/upload-artifact@v4
+        with:
+          name: coverage-test-failures
+          path: ${{ runner.temp }}/package

README.Rmd

@@ -17,6 +17,7 @@ knitr::opts_chunk$set(
 
 <!-- badges: start -->
 [![R-CMD-check](https://github.com/NeuroShepherd/gradecast/actions/workflows/R-CMD-check.yaml/badge.svg)](https://github.com/NeuroShepherd/gradecast/actions/workflows/R-CMD-check.yaml)
+[![Codecov test coverage](https://codecov.io/gh/NeuroShepherd/gradecast/branch/master/graph/badge.svg)](https://app.codecov.io/gh/NeuroShepherd/gradecast?branch=master)
 <!-- badges: end -->
 
 The goal of gradecast is to allow students to calculate a possible range of final grades for their academic program based on their current grades, quantity of completed ECTS points, and the number of remaining ECTS points. The package is designed to be used in a Shiny app, where the user can input their data and see the possible range of final grades in a plot.

README.md

@@ -6,6 +6,8 @@
 <!-- badges: start -->
 
 [![R-CMD-check](https://github.com/NeuroShepherd/gradecast/actions/workflows/R-CMD-check.yaml/badge.svg)](https://github.com/NeuroShepherd/gradecast/actions/workflows/R-CMD-check.yaml)
+[![Codecov test
+coverage](https://codecov.io/gh/NeuroShepherd/gradecast/branch/master/graph/badge.svg)](https://app.codecov.io/gh/NeuroShepherd/gradecast?branch=master)
 <!-- badges: end -->
 
 The goal of gradecast is to allow students to calculate a possible range

codecov.yml

@@ -0,0 +1,14 @@
+comment: false
+
+coverage:
+  status:
+    project:
+      default:
+        target: auto
+        threshold: 1%
+        informational: true
+    patch:
+      default:
+        target: auto
+        threshold: 1%
+        informational: true