Makefile: plug in gotestsum for better test output (#652)

Makefile

@@ -1,5 +1,4 @@
 COVERAGE_PACKAGES=github.com/kopia/kopia/repo/...,github.com/kopia/kopia/fs/...,github.com/kopia/kopia/snapshot/...
-GO_TEST=go test
 TEST_FLAGS?=
 KOPIA_INTEGRATION_EXE=$(CURDIR)/dist/integration/kopia.exe
 FIO_DOCKER_TAG=ljishen/fio
@@ -16,6 +15,8 @@ endif
 
 include tools/tools.mk
 
+GO_TEST=$(gotestsum) --format=pkgname-and-test-fails --
+
 LINTER_DEADLINE=300s
 UNIT_TESTS_TIMEOUT=300s
 
@@ -60,7 +61,7 @@ vet-time-inject:
 ifneq ($(TRAVIS_OS_NAME),windows)
 	! find . -name '*.go' \
 	-exec grep -n -e time.Now -e time.Since -e time.Until {} + \
-	| grep -v -e allow:no-inject-time
+	grep -v src/golang.org | grep -v -e allow:no-inject-time
 endif
 
 vet: vet-time-inject
@@ -186,28 +187,28 @@ test-with-coverage:
 test-with-coverage-pkgonly:
 	$(GO_TEST) -count=1 -coverprofile=tmp.cov -timeout 300s github.com/kopia/kopia/...
 
-test:
+test: $(gotestsum)
 	$(GO_TEST) -count=1 -timeout $(UNIT_TESTS_TIMEOUT) ./...
 
-vtest:
+vtest: $(gotestsum)
 	$(GO_TEST) -count=1 -short -v -timeout $(UNIT_TESTS_TIMEOUT) ./...
 
 dist-binary:
 	go build -o $(KOPIA_INTEGRATION_EXE) -tags testing github.com/kopia/kopia
 
 integration-tests: export KOPIA_EXE ?= $(KOPIA_INTEGRATION_EXE)
-integration-tests: dist-binary
+integration-tests: dist-binary $(gotestsum)
 	 $(GO_TEST) $(TEST_FLAGS) -count=1 -parallel $(PARALLEL) -timeout 3600s github.com/kopia/kopia/tests/end_to_end_test
 
 endurance-tests: export KOPIA_EXE ?= $(KOPIA_INTEGRATION_EXE)
-endurance-tests: dist-binary
+endurance-tests: dist-binary $(gotestsum)
 	 $(GO_TEST) $(TEST_FLAGS) -count=1 -parallel $(PARALLEL) -timeout 3600s github.com/kopia/kopia/tests/endurance_test
 
-robustness-tool-tests:
+robustness-tool-tests: $(gotestsum)
 	FIO_DOCKER_IMAGE=$(FIO_DOCKER_TAG) \
 	$(GO_TEST) $(TEST_FLAGS) -count=1 -timeout 90s github.com/kopia/kopia/tests/tools/...
 
-stress-test:
+stress-test: $(gotestsum)
 	KOPIA_LONG_STRESS_TEST=1 $(GO_TEST) -count=1 -timeout 200s github.com/kopia/kopia/tests/stress_test
 	$(GO_TEST) -count=1 -timeout 200s github.com/kopia/kopia/tests/repository_stress_test
 

tools/tools.mk

@@ -107,13 +107,14 @@ TOOLS_DIR:=$(SELF_DIR)$(slash).tools
 GOLANGCI_LINT_VERSION=1.30.0
 NODE_VERSION=12.18.3
 HUGO_VERSION=0.74.3
+GOTESTSUM_VERSION=0.5.3
 GORELEASER_VERSION=v0.140.1
 
 # goveralls
 GOVERALLS_TOOL=$(TOOLS_DIR)/bin/goveralls
 
 $(GOVERALLS_TOOL):
-	$(mkdir) $(TOOLS_DIR)
+	-$(mkdir) $(TOOLS_DIR)
 	GO111MODULE=off GOPATH=$(TOOLS_DIR) go get github.com/mattn/goveralls
 
 # nodejs / npm
@@ -187,7 +188,7 @@ hugo=$(hugo_dir)$(slash)hugo$(exe_suffix)
 
 $(hugo):
 	@echo Downloading Hugo v$(HUGO_VERSION) to $(hugo)
-	$(mkdir) $(TOOLS_DIR)$(slash)hugo-$(HUGO_VERSION)
+	-$(mkdir) $(TOOLS_DIR)$(slash)hugo-$(HUGO_VERSION)
 
 ifeq ($(uname),Windows)
 	curl -LsS -o $(hugo_dir).zip https://github.com/gohugoio/hugo/releases/download/v$(HUGO_VERSION)/hugo_extended_$(HUGO_VERSION)_Windows-64bit.zip
@@ -202,6 +203,14 @@ endif
 
 endif
 
+gotestsum=$(TOOLS_DIR)/bin/gotestsum
+
+$(gotestsum): export GO111MODULE=off
+$(gotestsum): export GOPATH=$(TOOLS_DIR)
+$(gotestsum):
+	-$(mkdir) $(TOOLS_DIR)
+	go get gotest.tools/gotestsum
+
 # goreleaser
 goreleaser_dir=$(TOOLS_DIR)$(slash)goreleaser-$(GORELEASER_VERSION)
 goreleaser=$(goreleaser_dir)$(slash)goreleaser$(exe_suffix)
@@ -264,5 +273,5 @@ else
 maybehugo=
 endif
 
-all-tools: $(npm) $(goreleaser) $(linter) $(maybehugo) $(go_bindata) windows-signing-tools
+all-tools: $(gotestsum) $(npm) $(goreleaser) $(linter) $(maybehugo) $(go_bindata) windows-signing-tools