Fix coverage report

Author: MilesCranmer

.github/workflows/CI.yml

@@ -55,7 +55,19 @@ jobs:
             julia --color=yes --project=. coverage.jl
         shell: bash
       - name: Coveralls
-        uses: coverallsapp/github-action@master
+        uses: coverallsapp/github-action@v2
         with:
-          github-token: ${{ secrets.GITHUB_TOKEN }}
-          path-to-lcov: coverage-lcov.info
+          parallel: true
+          path-to-lcov: lcov.info
+          flag-name: julia-${{ matrix.julia-version }}-${{ matrix.os }}-${{ github.event_name }}
+
+  coveralls:
+    name: Indicate completion to coveralls
+    runs-on: ubuntu-latest
+    needs: test
+    steps:
+      - name: Finish
+        uses: coverallsapp/github-action@v2
+        with:
+          parallel-finished: true
+

coverage.jl

@@ -1,14 +1,15 @@
 using Coverage
 # process '*.cov' files
 coverage = process_folder() # defaults to src/; alternatively, supply the folder name as argument
+push!(coverage, process_folder("ext")...)
 
-LCOV.writefile("coverage-lcov.info", coverage)
+LCOV.writefile("lcov.info", coverage)
 
 # process '*.info' files
 coverage = merge_coverage_counts(
     coverage,
     filter!(
-        let prefixes = (joinpath(pwd(), "src", ""),)
+        let prefixes = (joinpath(pwd(), "src", ""), joinpath(pwd(), "ext", ""))
             c -> any(p -> startswith(c.filename, p), prefixes)
         end,
         LCOV.readfolder("test"),