github.com/letsencrypt/trillian@v1.1.2-0.20180615153820-ae375a99d36a/storage/tree_id_test.go (about)

     1  // Copyright 2017 Google Inc. All Rights Reserved.
     2  //
     3  // Licensed under the Apache License, Version 2.0 (the "License");
     4  // you may not use this file except in compliance with the License.
     5  // You may obtain a copy of the License at
     6  //
     7  //     http://www.apache.org/licenses/LICENSE-2.0
     8  //
     9  // Unless required by applicable law or agreed to in writing, software
    10  // distributed under the License is distributed on an "AS IS" BASIS,
    11  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    12  // See the License for the specific language governing permissions and
    13  // limitations under the License.
    14  
    15  package storage
    16  
    17  import (
    18  	"testing"
    19  )
    20  
    21  func TestNewTreeID(t *testing.T) {
    22  	// Grab a few IDs, check that they're not zero and not repeating.
    23  	ids := make(map[int64]bool)
    24  	for i := 0; i < 5; i++ {
    25  		id, err := NewTreeID()
    26  		switch _, ok := ids[id]; {
    27  		case err != nil:
    28  			t.Errorf("%v: NewTreeID() = (_ %v), want = (_, nil)", i, err)
    29  		case ok:
    30  			t.Errorf("%v: NewTreeID() return repeated ID: %v", i, id)
    31  		case id <= 0:
    32  			t.Errorf("%v: NewTreeID() = %v, want > 0", i, id)
    33  		default:
    34  			ids[id] = true
    35  		}
    36  	}
    37  }