Add support for JUnit test results (open-telemetry#37941)

Mimicking
open-telemetry/opentelemetry-collector#11963

This effort is related to
open-telemetry#36761.
We'll need JUnit test results so issuegenerator(being worked on this PR:
open-telemetry/opentelemetry-go-build-tools#672)
can generate issues based on failing tests on main.

cc @mx-psi

Signed-off-by: Arthur Silva Sens <[email protected]>

.github/workflows/build-and-test.yml

@@ -291,14 +291,20 @@ jobs:
       - name: Run Unit Tests
         if: startsWith( matrix.go-version, '1.23' ) != true
         run: make gotest GROUP=${{ matrix.group }}
-      - name: Run Unit Tests With Coverage
-        if: startsWith( matrix.go-version, '1.23' ) # only run coverage on one version
-        run: make gotest-with-cover GROUP=${{ matrix.group }}
+      - name: Run Unit Tests With JUnit and Coverage
+        if: startsWith( matrix.go-version, '1.23' ) # only run junit/coverage on one version
+        run: make gotest-with-junit-and-cover GROUP=${{ matrix.group }}
       - uses: actions/upload-artifact@v4
         if: startsWith( matrix.go-version, '1.23' ) # only upload artifact for one version
         with:
           name: coverage-artifacts-${{ matrix.go-version }}-${{ matrix.runner }}-${{ matrix.group }}
           path: ${{ matrix.group }}-coverage.txt
+      - uses: actions/upload-artifact@v4
+        if: startsWith( matrix.go-version, '1.23' ) # only upload artifact for one version
+        with:
+          name: test-results-${{ matrix.go-version }}-${{ matrix.runner }}-${{ matrix.group }}
+          path: internal/tools/testresults/
+          retention-days: 4
   unittest:
     if: ${{ github.actor != 'dependabot[bot]' && always() }}
     runs-on: ubuntu-24.04

.gitignore

@@ -35,6 +35,7 @@ __debug_bin*
 coverage/*
 *-coverage.txt
 integration-coverage.html
+internal/tools/testresults/*
 
 # Wix
 *.wixobj

Makefile

@@ -154,6 +154,14 @@ gotest:
 gotest-with-cover:
 	@$(MAKE) $(FOR_GROUP_TARGET) TARGET="test-with-cover"
 	$(GOCMD) tool covdata textfmt -i=./coverage/unit -o ./$(GROUP)-coverage.txt
+
+.PHONY: gotest-with-junit
+gotest-with-junit:
+	@$(MAKE) for-all-target TARGET="test-with-junit"
+
+.PHONY: gotest-with-junit-and-cover
+gotest-with-junit-and-cover:
+	@$(MAKE) for-all-target TARGET="test-with-junit-and-cover"
 
 .PHONY: gobuildtest
 gobuildtest:

Makefile.Common

@@ -30,6 +30,8 @@ GOTESTARCH?=$(GOARCH)
 
 DOCKERCMD ?= docker
 
+CURR_MOD := $(shell go list -m | tr '/' '-' )
+
 # In order to help reduce toil related to managing tooling for the open telemetry collector
 # this section of the makefile looks at only requiring command definitions to be defined
 # as part of $(TOOLS_MOD_DIR)/tools.go, following the existing practice.
@@ -42,6 +44,9 @@ TOOLS_BIN_DIR    := $(SRC_ROOT)/.tools
 TOOLS_BIN_NAMES  := $(addprefix $(TOOLS_BIN_DIR)/, $(notdir $(TOOLS_PKG_NAMES)))
 CHLOGGEN_CONFIG  := .chloggen/config.yaml
 
+# no trailing slash
+JUNIT_OUT_DIR ?= $(TOOLS_MOD_DIR)/testresults
+
 .PHONY: install-tools
 install-tools: $(TOOLS_BIN_NAMES)
 
@@ -107,6 +112,17 @@ do-unit-tests-with-cover: $(GOTESTSUM)
 	$(GOTESTSUM) $(GOTESTSUM_OPT) --packages="./..." -- $(GOTEST_OPT_WITH_COVERAGE)
 	$(GOCMD) tool cover -html=coverage.txt -o coverage.html
 
+.PHONY: test-with-junit
+test-with-junit: $(GOTESTSUM)
+	mkdir -p $(JUNIT_OUT_DIR)
+	$(GOTESTSUM) $(GOTESTSUM_OPT) --packages="./..." --junitfile $(JUNIT_OUT_DIR)/$(CURR_MOD)-junit.xml -- $(GOTEST_OPT) ./...
+
+.PHONY: test-with-junit-and-cover
+test-with-junit-and-cover: $(GOTESTSUM)
+	mkdir -p $(JUNIT_OUT_DIR)
+	$(GOTESTSUM) $(GOTESTSUM_OPT) --packages="./..." --junitfile $(JUNIT_OUT_DIR)/$(CURR_MOD)-junit.xml -- $(GOTEST_OPT_WITH_COVERAGE) ./...
+	$(GOCMD) tool cover -html=coverage.txt -o coverage.html
+
 .PHONY: buildtest
 buildtest:
 ifneq (,$(wildcard ./*.go))