Makefile: Add Go test for schema-go

And run them from Travis.

Also replace some old Travis test commands with a single call to 'make
test'.  Now we die on the first error (e.g. we don't run the Go tests
if lint fails), but I don't think that's a big problem, and this way
we don't have to maintain two parallel lists of test targets.

Signed-off-by: W. Trevor King <wking@tremily.us>

.travis.yml

@@ -17,9 +17,7 @@ install: true
 
 script:
   - env | grep TRAVIS_
-  - make .govet
-  - make .golint
   - echo "${TRAVIS_COMMIT_RANGE} -> ${TRAVIS_COMMIT_RANGE/.../..} (travis-ci/travis-ci#4596)"
-  - TRAVIS_COMMIT_RANGE="${TRAVIS_COMMIT_RANGE/.../..}" make .gitvalidation
+  - TRAVIS_COMMIT_RANGE="${TRAVIS_COMMIT_RANGE/.../..}" make test
   - make docs
   - make -C schema test

Makefile

@@ -55,7 +55,14 @@ HOST_GOLANG_VERSION	= $(shell go version | cut -d ' ' -f3 | cut -c 3-)
 # this variable is used like a function. First arg is the minimum version, Second arg is the version to be checked.
 ALLOWED_GO_VERSION	= $(shell test '$(shell /bin/echo -e "$(1)\n$(2)" | sort -V | head -n1)' = '$(1)' && echo 'true')
 
-test: .govet .golint .gitvalidation
+TESTS := .govet .golint .gitvalidation
+
+# (*testing.T).Run is new in 1.7, https://golang.org/doc/go1.7#testing
+ifeq ($(call ALLOWED_GO_VERSION,1.7,$(HOST_GOLANG_VERSION)),true)
+	TESTS += .specs-go
+endif
+
+test: $(TESTS)
 
 .govet:
 	go vet -x ./...
@@ -77,7 +84,10 @@ else
 	git-validation -v -run DCO,short-subject,dangling-whitespace -range $(EPOCH_TEST_COMMIT)..HEAD
 endif
 
-install.tools: .install.golint .install.gitvalidation
+.specs-go:
+	go test ./specs-go
+
+install.tools: .install.golint .install.gitvalidation .install.canonicaljson
 
 # golint does not even build for <go1.6
 .install.golint:
@@ -88,6 +98,9 @@ endif
 .install.gitvalidation:
 	go get -u github.com/vbatts/git-validation
 
+.install.canonicaljson:
+	go get -d -u github.com/docker/go/canonical/json
+
 clean:
 	rm -rf $(OUTPUT_DIRNAME) *~
 	rm -f version.md