Adding the ability to test an specific wrapper with go test -wrapper.

.travis.yml

@@ -12,11 +12,12 @@ install:
   - sudo apt-get install bzr
   # - go get github.com/cznic/ql/ql # ql command line util.
   # - go install github.com/cznic/ql/ql # ql command line util.
-  - go get upper.io/db/mongo
-  - go get upper.io/db/mysql
-  - go get upper.io/db/postgresql
-  - go get upper.io/db/sqlite
-  - go get upper.io/db/ql
+  - go get -t -d
+  # - go get upper.io/db/mongo
+  # - go get upper.io/db/mysql
+  # - go get upper.io/db/postgresql
+  # - go get upper.io/db/sqlite
+  # - go get upper.io/db/ql
 
 services:
   - mongodb

db_test.go

@@ -5,6 +5,7 @@ import (
 	"errors"
 	"flag"
 	"labix.org/v2/mgo"
+	"labix.org/v2/mgo/bson"
 	"log"
 	"reflect"
 	"testing"
@@ -25,6 +26,10 @@ var wrappers = []string{
 	`ql`,
 }
 
+const (
+	TestAllWrappers = `all`
+)
+
 var (
 	errDriverErr = errors.New(`Driver error`)
 )
@@ -35,6 +40,7 @@ func init() {
 
 	// Getting host from the environment.
 	host := flag.String("host", "testserver.local", "Testing server address.")
+	wrapper := flag.String("wrapper", "all", "Wrappers to test.")
 
 	flag.Parse()
 
@@ -67,6 +73,11 @@ func init() {
 		},
 	}
 
+	if *wrapper != TestAllWrappers {
+		wrappers = []string{*wrapper}
+		log.Printf("Testing wrapper %s.", *wrapper)
+	}
+
 }
 
 var setupFn = map[string]func(driver interface{}) error{
@@ -331,7 +342,7 @@ func TestSimpleCRUD(t *testing.T) {
 			var res db.Result
 			switch wrapper {
 			case `mongo`:
-				res = col.Find(db.Cond{"_id": id})
+				res = col.Find(db.Cond{"_id": id.(bson.ObjectId)})
 			case `ql`:
 				res = col.Find(db.Cond{"id()": id})
 			default: