add FindPtr for belongs_to

blongs_to_test.go

@@ -165,3 +165,54 @@ func TestBelongsTo_Find(t *testing.T) {
 	assert.Equal(t, "face1", noses2[0].Face.Name)
 	assert.Equal(t, "face2", noses2[1].Face.Name)
 }
+
+func TestBelongsTo_FindPtr(t *testing.T) {
+	assert.NoError(t, prepareEngine())
+
+	type Face struct {
+		Id   int64
+		Name string
+	}
+
+	type Nose struct {
+		Id   int64
+		Face *Face `xorm:"belongs_to"`
+	}
+
+	err := testEngine.Sync2(new(Nose), new(Face))
+	assert.NoError(t, err)
+
+	var face1 = Face{
+		Name: "face1",
+	}
+	var face2 = Face{
+		Name: "face2",
+	}
+	_, err = testEngine.Insert(&face1, &face2)
+	assert.NoError(t, err)
+
+	var noses = []Nose{
+		{Face: &face1},
+		{Face: &face2},
+	}
+	_, err = testEngine.Insert(&noses)
+	assert.NoError(t, err)
+
+	var noses1 []Nose
+	err = testEngine.Find(&noses1)
+	assert.NoError(t, err)
+	assert.Equal(t, 2, len(noses1))
+	assert.Equal(t, face1.Id, noses1[0].Face.Id)
+	assert.Equal(t, face2.Id, noses1[1].Face.Id)
+	assert.Equal(t, "", noses1[0].Face.Name)
+	assert.Equal(t, "", noses1[1].Face.Name)
+
+	var noses2 []Nose
+	err = testEngine.Cascade().Find(&noses2)
+	assert.NoError(t, err)
+	assert.Equal(t, 2, len(noses2))
+	assert.Equal(t, face1.Id, noses2[0].Face.Id)
+	assert.Equal(t, face2.Id, noses2[1].Face.Id)
+	assert.Equal(t, "face1", noses2[0].Face.Name)
+	assert.Equal(t, "face2", noses2[1].Face.Name)
+}