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vain/testing.go

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package vain
import (
"io/ioutil"
"os"
"path/filepath"
"testing"
)
// TestDB returns a populated MemDB in a temp location, as well as a function
// to call at cleanup time.
func TestDB(t *testing.T) (*MemDB, func()) {
dir, err := ioutil.TempDir("", "vain-testing-")
if err != nil {
t.Fatalf("could not create tmpdir for db: %v", err)
return nil, func() {}
}
name := filepath.Join(dir, "test.json")
db, err := NewMemDB(name)
if err != nil {
t.Fatalf("could not create db: %v", err)
return nil, func() {}
}
return db, func() {
if err := os.RemoveAll(dir); err != nil {
t.Fatalf("could not clean up tmpdir: %v", err)
}
}
}