diff --git a/pgtest.go b/pgtest.go
index 903a12c..c16d298 100644
--- a/pgtest.go
+++ b/pgtest.go
@@ -29,6 +29,8 @@ type PG struct {
 	User string
 	Name string
 
+	DSN string
+
 	persistent bool
 
 	stderr io.ReadCloser
@@ -224,6 +226,7 @@ func start(config *PGConfig) (*PG, error) {
 		Host: sockDir,
 		User: pgUser(isRoot),
 		Name: "test",
+		DSN:  dsn,
 
 		persistent: config.IsPersistent,
 
diff --git a/pgtest_test.go b/pgtest_test.go
index 11c89b9..b843ade 100644
--- a/pgtest_test.go
+++ b/pgtest_test.go
@@ -37,6 +37,7 @@ func TestPostgreSQLWithConfig(t *testing.T) {
 
 	assert.NotEmpty(pg.Host)
 	assert.NotEmpty(pg.Name)
+	assert.NotEmpty(pg.DSN)
 
 	err = pg.Stop()
 	assert.NoError(err)