Move .coverage.sh to make coverage (#301)

This fix moves the content of `.coverage.sh` to the Makefile
and creates a target of `make coverage`. This cleans up as
there is really no need to have a redundant script for
simple coverage test.

Signed-off-by: Yong Tang <yong.tang.github@outlook.com>

.coverage.sh

@@ -1,12 +0,0 @@
-#!/usr/bin/env bash
-
-set -e -x
-echo "" > coverage.txt
-
-for d in $(go list ./... | grep -v vendor); do
-    go test -race -coverprofile=profile.out -covermode=atomic $d
-    if [ -f profile.out ]; then
-        cat profile.out >> coverage.txt
-        rm profile.out
-    fi
-done

.travis.yml

@@ -42,8 +42,7 @@ script:
   - go test -tags etcd -race -bench=. ./...
   # Run kubernetes integration tests only if kubectl is available. i.e. If kubernetes was launched
   - ./contrib/kubernetes/testscripts/kubectl version && go test -v -tags k8s -race -bench=. -run 'TestK8sIntegration' ./test
-  # go cannot use test profile flag with multiple packages so we have to iterate, the following might be consolidated with the above steps.
-  - ./.coverage.sh
+  - make coverage
 
 after_success:
   - bash <(curl -s https://codecov.io/bash)

Makefile

@@ -38,6 +38,18 @@ testk8s: deps
 testk8s-setup: deps
 	go test -v ./middleware/kubernetes/... -run TestKubernetes
 
+.PHONY: coverage
+coverage: deps
+	set -e -x
+	echo "" > coverage.txt
+	for d in `go list ./... | grep -v vendor`; do \
+		go test -race -coverprofile=profile.out -covermode=atomic $$d; \
+		if [ -f profile.out ]; then \
+			cat profile.out >> coverage.txt; \
+			rm profile.out; \
+		fi; \
+	done
+
 .PHONY: clean
 clean:
 	go clean