Docerize unit tests (#472)

* Docerize unit tests

* Improve unit tests

Author: informalict

Dockerfile.unittest

@@ -0,0 +1,24 @@
+FROM golang:1.12.9-alpine AS downloader
+
+# git is required by 'go mod'
+RUN apk add git
+
+WORKDIR /app
+
+COPY go.mod .
+COPY go.sum .
+# It is done only once unless go.mod has been changed
+RUN go mod download
+
+FROM downloader
+
+COPY pkg /app/pkg
+COPY dashboard /app/dashboard
+
+ARG VERBOSE
+RUN CGO_ENABLED=0 go test ${VERBOSE} \
+   ./pkg/apis/... \
+   ./pkg/backup/... \
+   ./pkg/deployment/... \
+   ./pkg/storage/... \
+   ./pkg/util/...

Makefile

@@ -109,9 +109,6 @@ ifeq ($(LONG), 1)
 	TESTLENGTHOPTIONS :=
 	TESTTIMEOUT := 300m
 endif
-ifdef VERBOSE
-	TESTVERBOSEOPTIONS := -v
-endif
 
 SOURCES := $(shell find $(SRCDIR) -name '*.go' -not -path './test/*')
 DASHBOARDSOURCES := $(shell find $(DASHBOARDDIR)/src -name '*.js' -not -path './test/*') $(DASHBOARDDIR)/package.json
@@ -294,18 +291,11 @@ manifests: helm manifests-crd manifests-operator manifests-test chart-crd chart-
 
 .PHONY: run-unit-tests
 run-unit-tests: $(SOURCES)
-	go test $(TESTVERBOSEOPTIONS) \
-		$(REPOPATH)/pkg/apis/backup/v1alpha \
-		$(REPOPATH)/pkg/apis/deployment/v1alpha \
-		$(REPOPATH)/pkg/apis/replication/v1alpha \
-		$(REPOPATH)/pkg/apis/storage/v1alpha \
-		$(REPOPATH)/pkg/deployment/... \
-		$(REPOPATH)/pkg/storage \
-		$(REPOPATH)/pkg/util/k8sutil \
-		$(REPOPATH)/pkg/util/k8sutil/test \
-		$(REPOPATH)/pkg/util/probe \
-		$(REPOPATH)/pkg/util/validation \
-		$(REPOPATH)/pkg/backup/...
+ifdef VERBOSE
+	docker build --build-arg VERBOSE=-v -f Dockerfile.unittest .
+else
+	docker build -f Dockerfile.unittest .
+endif
 
 $(TESTBIN): $(GOBUILDDIR) $(SOURCES)
 	@mkdir -p $(BINDIR)