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150 lines
3.4 KiB
150 lines
3.4 KiB
package db
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import (
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"fmt"
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"os"
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"path/filepath"
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"testing"
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"github.com/stretchr/testify/assert"
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"github.com/stretchr/testify/require"
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cmn "github.com/tendermint/tmlibs/common"
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)
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func cleanupDBDir(dir, name string) {
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os.RemoveAll(filepath.Join(dir, name) + ".db")
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}
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func testBackendGetSetDelete(t *testing.T, backend string) {
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// Default
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dir, dirname := cmn.Tempdir(fmt.Sprintf("test_backend_%s_", backend))
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defer dir.Close()
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db := NewDB("testdb", backend, dirname)
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// A nonexistent key should return nil, even if the key is empty.
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require.Nil(t, db.Get([]byte("")))
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// A nonexistent key should return nil, even if the key is nil.
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require.Nil(t, db.Get(nil))
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// A nonexistent key should return nil.
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key := []byte("abc")
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require.Nil(t, db.Get(key))
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// Set empty ("")
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db.Set(key, []byte(""))
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require.NotNil(t, db.Get(key))
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require.Empty(t, db.Get(key))
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// Set empty (nil)
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db.Set(key, nil)
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require.NotNil(t, db.Get(key))
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require.Empty(t, db.Get(key))
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// Delete
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db.Delete(key)
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require.Nil(t, db.Get(key))
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}
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func TestBackendsGetSetDelete(t *testing.T) {
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for dbType, _ := range backends {
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testBackendGetSetDelete(t, dbType)
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}
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}
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func withDB(t *testing.T, creator dbCreator, fn func(DB)) {
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name := cmn.Fmt("test_%x", cmn.RandStr(12))
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db, err := creator(name, "")
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defer cleanupDBDir("", name)
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assert.Nil(t, err)
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fn(db)
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db.Close()
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}
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func TestBackendsNilKeys(t *testing.T) {
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// test all backends.
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// nil keys are treated as the empty key for most operations.
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for dbType, creator := range backends {
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withDB(t, creator, func(db DB) {
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t.Run(fmt.Sprintf("Testing %s", dbType), func(t *testing.T) {
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expect := func(key, value []byte) {
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if len(key) == 0 { // nil or empty
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assert.Equal(t, db.Get(nil), db.Get([]byte("")))
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assert.Equal(t, db.Has(nil), db.Has([]byte("")))
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}
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assert.Equal(t, db.Get(key), value)
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assert.Equal(t, db.Has(key), value != nil)
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}
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// Not set
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expect(nil, nil)
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// Set nil value
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db.Set(nil, nil)
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expect(nil, []byte(""))
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// Set empty value
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db.Set(nil, []byte(""))
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expect(nil, []byte(""))
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// Set nil, Delete nil
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db.Set(nil, []byte("abc"))
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expect(nil, []byte("abc"))
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db.Delete(nil)
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expect(nil, nil)
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// Set nil, Delete empty
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db.Set(nil, []byte("abc"))
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expect(nil, []byte("abc"))
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db.Delete([]byte(""))
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expect(nil, nil)
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// Set empty, Delete nil
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db.Set([]byte(""), []byte("abc"))
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expect(nil, []byte("abc"))
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db.Delete(nil)
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expect(nil, nil)
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// Set empty, Delete empty
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db.Set([]byte(""), []byte("abc"))
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expect(nil, []byte("abc"))
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db.Delete([]byte(""))
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expect(nil, nil)
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// SetSync nil, DeleteSync nil
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db.SetSync(nil, []byte("abc"))
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expect(nil, []byte("abc"))
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db.DeleteSync(nil)
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expect(nil, nil)
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// SetSync nil, DeleteSync empty
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db.SetSync(nil, []byte("abc"))
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expect(nil, []byte("abc"))
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db.DeleteSync([]byte(""))
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expect(nil, nil)
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// SetSync empty, DeleteSync nil
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db.SetSync([]byte(""), []byte("abc"))
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expect(nil, []byte("abc"))
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db.DeleteSync(nil)
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expect(nil, nil)
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// SetSync empty, DeleteSync empty
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db.SetSync([]byte(""), []byte("abc"))
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expect(nil, []byte("abc"))
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db.DeleteSync([]byte(""))
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expect(nil, nil)
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})
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})
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}
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}
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func TestGoLevelDBBackendStr(t *testing.T) {
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name := cmn.Fmt("test_%x", cmn.RandStr(12))
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db := NewDB(name, GoLevelDBBackendStr, "")
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defer cleanupDBDir("", name)
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_, ok := db.(*GoLevelDB)
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assert.True(t, ok)
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}
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