Add coverage report for unit tests

.gitignore

@@ -17,5 +17,11 @@ artifacts
 tmp/gitlab-test
 /.gopath/
 
+/.cover/
+codeclimate.json
+coverprofile.html
+coverprofile.txt
+coverprofile.func.txt
+
 # Ignore the generated binary
 /gitlab-runner

.gitlab-ci.yml

@@ -156,8 +156,18 @@ code_quality:
     paths: [gl-code-quality-report.json]
     expire_in: 1 week
 
+.unit_tests: &unit_tests
+  coverage: /total:\s+\(statements\)\s+\d+.\d+\%/
+  artifacts:
+    paths:
+    - coverprofile.html
+    - coverprofile.txt
+    - coverprofile.func.txt
+    expire_in: 1 week
+
 unit tests (no race):
   <<: *docker
+  <<: *unit_tests
   stage: test
   retry: 2
   script:
@@ -169,6 +179,7 @@ unit tests (no race):
 
 unit tests:
   <<: *docker
+  <<: *unit_tests
   stage: test
   allow_failure: true
   script:

Makefile

@@ -4,7 +4,7 @@ export VERSION := $(shell ./ci/version)
 REVISION := $(shell git rev-parse --short=8 HEAD || echo unknown)
 BRANCH := $(shell git show-ref | grep "$(REVISION)" | grep -v HEAD | awk '{print $$2}' | sed 's|refs/remotes/origin/||' | sed 's|refs/heads/||' | sort | head -n 1)
 BUILT := $(shell date +%Y-%m-%dT%H:%M:%S%:z)
-TESTFLAGS ?= -cover
+export TESTFLAGS ?= -cover
 
 LATEST_STABLE_TAG := $(shell git -c versionsort.prereleaseSuffix="-rc" -c versionsort.prereleaseSuffix="-RC" tag -l "v*.*.*" --sort=-v:refname | awk '!/rc/' | head -n 1)
 export IS_LATEST :=
@@ -45,7 +45,7 @@ export PATH := $(GOPATH_BIN):$(PATH)
 
 # Packages in vendor/ are included in ./...
 # https://github.com/golang/go/issues/11659
-OUR_PACKAGES ?= $(subst _$(BUILD_DIR),$(PKG),$(shell go list ./... | grep -v '/vendor/'))
+export OUR_PACKAGES ?= $(subst _$(BUILD_DIR),$(PKG),$(shell go list ./... | grep -v '/vendor/'))
 
 GO_LDFLAGS ?= -X $(COMMON_PACKAGE_NAMESPACE).NAME=$(PACKAGE_NAME) -X $(COMMON_PACKAGE_NAMESPACE).VERSION=$(VERSION) \
               -X $(COMMON_PACKAGE_NAMESPACE).REVISION=$(REVISION) -X $(COMMON_PACKAGE_NAMESPACE).BUILT=$(BUILT) \
@@ -123,7 +123,7 @@ check_race_conditions:
 
 test: $(PKG_BUILD_DIR) docker
 	# Running tests...
-	go test $(OUR_PACKAGES) $(TESTFLAGS)
+	@./scripts/go_test_with_coverage_report
 
 install:
 	go install --ldflags="$(GO_LDFLAGS)" $(PKG)

scripts/go_test_with_coverage_report

@@ -0,0 +1,30 @@
+#!/usr/bin/env bash
+
+set -eo pipefail
+
+coverMode="count"
+
+if [[ ${TESTFLAGS} = *"-cover"* ]]; then
+    rm -rf ".cover/"
+    mkdir -p ".cover"
+
+    if [[ ${TESTFLAGS} = *"-race"* ]]; then
+        coverMode="atomic"
+    fi
+
+    echo "Starting go tests with coverprofile in ${coverMode} mode"
+
+    for pkg in ${OUR_PACKAGES}; do
+        profileFile=".cover/$(echo ${pkg} | tr "/" "-").cover"
+
+        go test -covermode="${coverMode}" -coverprofile="${profileFile}" ${TESTFLAGS} -v ${pkg}
+    done
+
+    echo "mode: ${coverMode}" > coverprofile.txt
+    grep -h -v "^mode:" .cover/*.cover >> coverprofile.txt
+
+    echo "Generating coverprofile.html file"
+    go tool cover -o coverprofile.html -html=coverprofile.txt
+    go tool cover -o coverprofile.func.txt -func=coverprofile.txt
+    grep total coverprofile.func.txt || true
+fi