From f4f53c4d9f2069af2cc76c718005333385960fcf Mon Sep 17 00:00:00 2001
From: Joakim Olsson <joakim@unbound.se>
Date: Tue, 4 Nov 2025 21:33:28 +0100
Subject: [PATCH] ci: add code coverage reporting to CI pipeline

Update code coverage file handling in the Dockerfile to generate
coverage reports properly. Change temporary coverage file name and
exclude specific files from the report. Remove the temporary file
after processing. Add steps to the CI pipeline to download and
execute the Codecov uploader, ensuring coverage data is uploaded
for analysis during the build stage.
---
 .gitlab-ci.yml |  3 +++
 Dockerfile     | 12 ++++++++----
 2 files changed, 11 insertions(+), 4 deletions(-)

diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 1211240..66cf715 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -13,6 +13,9 @@ build:
   stage: build
   script:
     - build
+    - curl -Os https://uploader.codecov.io/latest/linux/codecov
+    - chmod +x codecov
+    - ./codecov -t ${CODECOV_TOKEN} -R $CI_PROJECT_DIR -C $CI_COMMIT_SHA -r $CI_PROJECT_PATH
     - push
   artifacts:
     paths:
diff --git a/Dockerfile b/Dockerfile
index d567e52..2627244 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -5,10 +5,11 @@ ADD . /build
 RUN if [ $(go mod tidy -v 2>&1 | grep -c unused) != 0 ]; then echo "Unused modules, please run 'go mod tidy'"; exit 1; fi
 RUN go fmt ./...
 RUN go vet ./...
-RUN CGO_ENABLED=1 go test -mod=readonly -race -coverprofile=.testCoverage.txt.tmp -covermode=atomic -coverpkg=$(go list ./... | tr '\n' , | sed 's/,$//') ./...
-RUN cat .testCoverage.txt.tmp | grep -v generated.go | grep -v _gen.go > .testCoverage.txt
-RUN go tool cover -html=.testCoverage.txt -o coverage.html
-RUN go tool cover -func=.testCoverage.txt
+RUN CGO_ENABLED=1 go test -mod=readonly -race -coverprofile=coverage.txt.tmp -covermode=atomic -coverpkg=$(go list ./... | tr '\n' , | sed 's/,$//') ./...
+RUN ["/bin/bash", "-c", "cat coverage.txt.tmp | grep -v testing.go | grep -v -f <(find . -type f | xargs grep -l 'Code generated by github.com/99designs/gqlgen, DO NOT EDIT') > coverage.txt"]
+RUN go tool cover -html=coverage.txt -o coverage.html
+RUN go tool cover -func=coverage.txt
+RUN rm coverage.txt.tmp
 
 RUN GOOS=linux GOARCH=amd64 go build \
         -tags prod \
@@ -18,6 +19,9 @@ RUN GOOS=linux GOARCH=amd64 go build \
          -ldflags '-w -s' \
          ./cmd/dancefetcher/dancefetcher.go
 
+FROM scratch as export
+COPY --from=build /build/coverage.txt /
+
 FROM scratch
 COPY --from=build /etc/ssl/certs/ca-certificates.crt /etc/ssl/certs/
 COPY --from=build /release/dancefetcher /