Merge commit 'd6bd1ce' into bug/race-close

Author: willscott

ds_test.go

@@ -147,6 +147,19 @@ func TestQueryRespectsProcess(t *testing.T) {
 	addTestCases(t, d, testcases)
 }
 
+func TestCloseRace(t *testing.T) {
+	d, close := newDS(t)
+	for n := 0; n < 1000; n++ {
+		d.Put(ds.NewKey(fmt.Sprintf("%d", n)), []byte(fmt.Sprintf("test%d", n)))
+	}
+
+	go close()
+	tx, _ := d.NewTransaction(false)
+	for k := range testcases {
+		tx.Get(ds.NewKey(k))
+	}
+}
+
 func TestQueryRespectsProcessMem(t *testing.T) {
 	d := newDSMem(t)
 	addTestCases(t, d, testcases)