flow: Closed <feature> 'add_test_coverage'.

* also tweaked GOPATH as needed
* re-vendored with cover tool included
* ignore $/cover.out

.hgignore

@@ -1,2 +1,3 @@
 syntax: glob
-bin
+bin
+cover.out

Makefile

@@ -3,18 +3,19 @@
 # derived from: http://zduck.com/2014/go-project-structure-and-dependencies/
 
 # build targets (which aren't files)
-.PHONY: build fmt lint vet test autotest run clean env vendor
+.PHONY: build fmt lint vet test autotest cover run clean env vendor
 
 # configuration
 APPNAME := docrawler
 VENDOR := .vendor
 PACKAGES :=                     \
 	golang.org/x/tools/cmd/vet    \
+	golang.org/x/tools/cmd/cover  \
 	github.com/golang/lint/golint
 
 # override GOPATH to be our vendor directory
-export GOPATH := ${PWD}/${VENDOR}
-export PATH := ${PWD}/${VENDOR}/bin:${PATH}
+export GOPATH := ${PWD}/${VENDOR}:${PWD}
+export PATH := ${PWD}/${VENDOR}/bin:${PWD}/bin:${PATH}
 
 default: build
 
@@ -35,24 +36,27 @@ test:
 
 autotest:
 	fswatch -or ./src | \
-	xargs -n1 -I{} ${SHELL} -c 'echo ; date ; echo ----------------------------; go test ./src/... | ./util/testfilter.sh'
+		xargs -n1 -I{} ${SHELL} -c 'echo ; date ; echo ----------------------------; go test ./src/... | ./util/testfilter.sh'
+
+cover:
+	go test -coverprofile cover.out ./src/...  && go tool cover -html cover.out
 
 run: build
 	./bin/${APPNAME}
 
 clean:
-	rm -f ./bin/${APPNAME}
+	rm -f ./bin/${APPNAME} ./cover.out
 
 env:
 	go env
 
 # vendor
 # * wipes our vendor directory completely
-# * fetches all packages in ${PACKAGES}
+# * fetches all packages in ${PACKAGES} (GOPATH hardcoded to vendor directory only)
 # * removes source control dirs so packages are vendorable (commitable)
 vendor:
 	rm -dRf ./${VENDOR}/src                          && \
-	go get -u ${PACKAGES}                            && \
+	GOPATH=${PWD}/${VENDOR} go get -u ${PACKAGES}    && \
 	rm -rf `find ./${VENDOR}/src -type d -name .git` && \
 	rm -rf `find ./${VENDOR}/src -type d -name .hg`  && \
 	rm -rf `find ./${VENDOR}/src -type d -name .bzr` && \