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package bolt
import (
"io/ioutil"
"os"
"testing"
"github.com/stretchr/testify/assert"
)
// Ensure that a database can be opened without error.
func TestDBOpen(t *testing.T) {
withDB(func(db *DB, path string) {
err := db.Open(path, 0666)
assert.NoError(t, err)
assert.Equal(t, db.Path(), path)
})
}
// Ensure that the database returns an error if already open.
func TestDBReopen(t *testing.T) {
withDB(func(db *DB, path string) {
db.Open(path, 0666)
err := db.Open(path, 0666)
assert.Equal(t, err, DatabaseAlreadyOpenedError)
})
}
// Ensure that the database returns an error if the file handle cannot be open.
func TestDBOpenFileError(t *testing.T) {
withMockDB(func(db *DB, mockos *mockos, path string) {
exp := &os.PathError{}
mockos.On("OpenFile", path, os.O_RDWR|os.O_CREATE, os.FileMode(0666)).Return((*os.File)(nil), exp)
err := db.Open(path, 0666)
assert.Equal(t, err, exp)
})
}
// Ensure that the database returns an error if the meta file handle cannot be open.
func TestDBOpenMetaFileError(t *testing.T) {
withMockDB(func(db *DB, mockos *mockos, path string) {
exp := &os.PathError{}
mockos.On("OpenFile", path, os.O_RDWR|os.O_CREATE, os.FileMode(0666)).Return(&os.File{}, nil)
mockos.On("OpenFile", path, os.O_RDWR|os.O_SYNC, os.FileMode(0666)).Return((*os.File)(nil), exp)
err := db.Open(path, 0666)
assert.Equal(t, err, exp)
})
}
// withDB executes a function with a database reference.
func withDB(fn func(*DB, string)) {
f, _ := ioutil.TempFile("", "bolt-")
path := f.Name()
f.Close()
os.Remove(path)
defer os.RemoveAll(path)
db := NewDB()
fn(db, path)
}
// withMockDB executes a function with a database reference and a mock filesystem.
func withMockDB(fn func(*DB, *mockos, string)) {
os := &mockos{}
db := NewDB()
db.os = os
fn(db, os, "/mock/db")
}
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