https://github.com/cayleygraph/cayley/blob/master/graph/bolt/bolt_test.go

gistfile1.go

func TestCreateDatabase(t *testing.T) {
	tmpFile, err := ioutil.TempFile(os.TempDir(), "cayley_test")
	if err != nil {
		t.Fatalf("Could not create working directory: %v", err)
	}
	t.Log(tmpFile)

	err = createNewBolt(tmpFile.Name(), nil)
	if err != nil {
		t.Fatal("Failed to create LevelDB database.")
	}

	qs, err := newQuadStore(tmpFile.Name(), nil)
	if qs == nil || err != nil {
		t.Error("Failed to create bolt QuadStore.")
	}
	if s := qs.Size(); s != 0 {
		t.Errorf("Unexpected size, got:%d expected:0", s)
	}
	qs.Close()

	os.RemoveAll(tmpFile.Name())
}

func makeBolt(t testing.TB) (graph.QuadStore, graph.Options, func()) {
	tmpFile, err := ioutil.TempFile(os.TempDir(), "cayley_test")
	if err != nil {
		t.Fatalf("Could not create working directory: %v", err)
	}
	err = createNewBolt(tmpFile.Name(), nil)
	if err != nil {
		os.RemoveAll(tmpFile.Name())
		t.Fatal("Failed to create Bolt database.", err)
	}
	qs, err := newQuadStore(tmpFile.Name(), nil)
	if qs == nil || err != nil {
		os.RemoveAll(tmpFile.Name())
		t.Fatal("Failed to create Bolt QuadStore.")
	}
	return qs, nil, func() {
		qs.Close()
		os.RemoveAll(tmpFile.Name())
	}
}

testing snippets - using examples of temp files