ci: hide `go test` output to the file on CI

Let's hide stdout of go tests to the files.
In case of failed test - it should be included in junit report anyway and shown in Jenkins.

Closes #3543

.gitignore

@@ -82,3 +82,6 @@ package-lock.json
 
 # junit reports for Jenkins integration
 report.xml
+
+# go test logs
+test.log

Makefile

@@ -35,7 +35,6 @@ GIT_COMMIT = $(shell git rev-parse --short HEAD)
 AUTHOR ?= $(shell git config user.email || echo $$USER)
 
 ENABLE_METRICS ?= true
-BUILD_TAGS ?= 
 BUILD_FLAGS ?= $(shell echo "-ldflags='\
 	-X github.com/status-im/status-go/params.Version=$(RELEASE_TAG:v%=%) \
 	-X github.com/status-im/status-go/params.GitCommit=$(GIT_COMMIT) \
@@ -48,7 +47,6 @@ BUILD_FLAGS_MOBILE ?= $(shell echo "-ldflags='\
 	-X github.com/status-im/status-go/params.IpfsGatewayURL=$(IPFS_GATEWAY_URL)'")
 
 networkid ?= StatusChain
-gotest_extraflags =
 
 DOCKER_IMAGE_NAME ?= statusteam/status-go
 BOOTNODE_IMAGE_NAME ?= statusteam/bootnode
@@ -311,28 +309,23 @@ docker-test: ##@tests Run tests in a docker container with golang.
 
 test: test-unit ##@tests Run basic, short tests during development
 
-test-unit: SHELL := /bin/bash -o pipefail
-test-unit: UNIT_TEST_PACKAGES = $(shell go list ./...  | \
+test-unit: export BUILD_TAGS ?=
+test-unit: export UNIT_TEST_PACKAGES ?= $(shell go list ./... | \
 	grep -v /vendor | \
 	grep -v /t/e2e | \
 	grep -v /t/benchmarks | \
 	grep -v /transactions/fake )
 test-unit: ##@tests Run unit and integration tests
-	for package in $(UNIT_TEST_PACKAGES); do \
-		set -e; \
-		package_dir=$$(go list -f {{.Dir}} $${package}); \
-		go test -tags '$(BUILD_TAGS)' -timeout 30m -v -failfast $${package} $(gotest_extraflags) | \
-		  go-junit-report -iocopy -out $${package_dir}/report.xml; \
-	done
+	./_assets/scripts/run_unit_tests.sh
 
-test-unit-race: gotest_extraflags=-race
+test-unit-race: export GOTEST_EXTRAFLAGS=-race
 test-unit-race: test-unit ##@tests Run unit and integration tests with -race flag
 
 test-e2e: ##@tests Run e2e tests
 	# order: reliability then alphabetical
 	# TODO(tiabc): make a single command out of them adding `-p 1` flag.
 
-test-e2e-race: gotest_extraflags=-race
+test-e2e-race: export GOTEST_EXTRAFLAGS=-race
 test-e2e-race: test-e2e ##@tests Run e2e tests with -race flag
 
 canary-test: node-canary

_assets/scripts/colors.sh

@@ -0,0 +1,12 @@
+#!/usr/bin/env bash
+
+# Colors
+export YLW='\033[1;33m'
+export RED='\033[0;31m'
+export GRN='\033[0;32m'
+export BLU='\033[0;34m'
+export BLD='\033[1m'
+export RST='\033[0m'
+
+# Clear line
+export CLR='\033[2K'

_assets/scripts/run_unit_tests.sh

@@ -0,0 +1,25 @@
+#!/usr/bin/env bash
+set -o pipefail
+
+GIT_ROOT=$(cd "${BASH_SOURCE%/*}" && git rev-parse --show-toplevel)
+
+source "${GIT_ROOT}/_assets/scripts/colors.sh"
+
+for package in ${UNIT_TEST_PACKAGES}; do
+  echo -e "${GRN}Testing:${RST} ${package}"
+  package_dir=$(go list -f "{{.Dir}}" "${package}")
+  output_file=${package_dir}/test.log
+
+  go test -tags "${BUILD_TAGS}" -timeout 30m -v -failfast "${package}" ${GOTEST_EXTRAFLAGS} | \
+     if [ "${CI}" = "true" ]; then cat > "${output_file}"; else tee "${output_file}"; fi
+  go_test_exit=$?
+
+  if [ "${CI}" = "true" ]; then
+    go-junit-report -in "${output_file}" -out "${package_dir}"/report.xml
+  fi
+
+  if [ ${go_test_exit} -ne 0 ]; then
+    echo -e "${YLW}Failed, see the log:${RST} ${BLD}${output_file}${RST}"
+    exit "${go_test_exit}"
+  fi
+done