testing: add datastore testsuite

.travis.yml

@@ -4,7 +4,7 @@ os:
 language: go
 
 go:
-  - 1.11.x
+  - 1.12.x
 
 env:
   global:

measure_test.go

+package measure
+
+import (
+	"testing"
+
+	dstest "github.com/ipfs/go-datastore/test"
+)
+
+func TestSuite(t *testing.T) {
+	d := New("measure", dstest.NewTestDatastore(false))
+	dstest.SubtestAll(t, d)
+}