Refactor code indexer (#9313)

* Refactor code indexer

* fix test

* fix test

* refactor code indexer

* fix import

* improve code

* fix typo

* fix test and make code clean

* fix lint

modules/indexer/code/bleve_test.go

@@ -5,12 +5,66 @@
 package code
 
 import (
+	"os"
 	"path/filepath"
 	"testing"
 
 	"code.gitea.io/gitea/models"
+	"code.gitea.io/gitea/modules/log"
+	"code.gitea.io/gitea/modules/setting"
+
+	"github.com/stretchr/testify/assert"
 )
 
 func TestMain(m *testing.M) {
 	models.MainTest(m, filepath.Join("..", "..", ".."))
 }
+
+func TestIndexAndSearch(t *testing.T) {
+	models.PrepareTestEnv(t)
+
+	dir := "./bleve.index"
+	os.RemoveAll(dir)
+
+	setting.Indexer.RepoIndexerEnabled = true
+	idx, _, err := NewBleveIndexer(dir)
+	if err != nil {
+		idx.Close()
+		log.Fatal("indexer.Init: %v", err)
+	}
+
+	err = idx.Index(1)
+	assert.NoError(t, err)
+
+	var (
+		keywords = []struct {
+			Keyword string
+			IDs     []int64
+		}{
+			{
+				Keyword: "Description",
+				IDs:     []int64{1},
+			},
+			{
+				Keyword: "repo1",
+				IDs:     []int64{1},
+			},
+			{
+				Keyword: "non-exist",
+				IDs:     []int64{},
+			},
+		}
+	)
+
+	for _, kw := range keywords {
+		total, res, err := idx.Search(nil, kw.Keyword, 1, 10)
+		assert.NoError(t, err)
+		assert.EqualValues(t, len(kw.IDs), total)
+
+		var ids = make([]int64, 0, len(res))
+		for _, hit := range res {
+			ids = append(ids, hit.RepoID)
+		}
+		assert.EqualValues(t, kw.IDs, ids)
+	}
+}