mirror of https://github.com/pulumi/pulumi.git
149 lines
3.9 KiB
Go
149 lines
3.9 KiB
Go
// Copyright 2016-2024, Pulumi Corporation.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package resource
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import (
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"strings"
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"testing"
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"github.com/stretchr/testify/assert"
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)
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func TestNewUniqueHex(t *testing.T) {
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t.Parallel()
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prefix := "prefix"
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randlen := 8
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maxlen := 100
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id, err := NewUniqueHex(prefix, randlen, maxlen)
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assert.NoError(t, err)
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assert.Equal(t, len(prefix)+randlen, len(id))
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assert.Equal(t, true, strings.HasPrefix(id, prefix))
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}
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func TestNewUniqueHexNonDeterminism(t *testing.T) {
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t.Parallel()
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prefix := "prefix"
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randlen := 8
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maxlen := 100
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id1, err := NewUniqueHex(prefix, randlen, maxlen)
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assert.NoError(t, err)
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id2, err := NewUniqueHex(prefix, randlen, maxlen)
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assert.NoError(t, err)
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assert.NotEqual(t, id1, id2)
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}
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func TestNewUniqueHexMaxLen2(t *testing.T) {
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t.Parallel()
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prefix := "prefix"
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randlen := 8
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maxlen := 13
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_, err := NewUniqueHex(prefix, randlen, maxlen)
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assert.ErrorContains(t, err, "name 'prefix' plus 8 random chars is longer than maximum length 13")
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}
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func TestNewUniqueHexEnsureRandomness2(t *testing.T) {
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t.Parallel()
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prefix := "prefix"
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// Just enough space to have 8 chars of randomenss
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randlen := 8
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maxlen := 14
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id, err := NewUniqueHex(prefix, randlen, maxlen)
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assert.NoError(t, err)
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assert.Equal(t, maxlen, len(id))
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assert.Equal(t, true, strings.HasPrefix(id, prefix))
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}
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func TestNewUniqueDefaults(t *testing.T) {
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t.Parallel()
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prefix := "prefix"
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id, err := NewUniqueHex(prefix, -1, -1)
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assert.NoError(t, err)
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assert.Equal(t, len(prefix)+8, len(id))
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assert.Equal(t, true, strings.HasPrefix(id, prefix))
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}
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func TestNewUniqueHexID(t *testing.T) {
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t.Parallel()
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prefix := "prefix"
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randlen := 8
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maxlen := 100
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id, err := NewUniqueHexID(prefix, randlen, maxlen)
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assert.NoError(t, err)
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assert.Equal(t, len(prefix)+8, len(id))
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assert.Equal(t, true, strings.HasPrefix(string(id), prefix))
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}
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func TestNewUniqueHexMaxLenID(t *testing.T) {
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t.Parallel()
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prefix := "prefix"
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randlen := 8
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maxlen := 20
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id, err := NewUniqueHexID(prefix, randlen, maxlen)
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assert.NoError(t, err)
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assert.Equal(t, len(prefix)+8, len(id))
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assert.Equal(t, true, strings.HasPrefix(string(id), prefix))
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}
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func TestNewUniqueDefaultsID(t *testing.T) {
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t.Parallel()
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prefix := "prefix"
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id, err := NewUniqueHexID(prefix, -1, -1)
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assert.NoError(t, err)
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assert.Equal(t, len(prefix)+8, len(id))
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assert.Equal(t, true, strings.HasPrefix(string(id), prefix))
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}
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func TestUniqueNameDeterminism(t *testing.T) {
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t.Parallel()
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randomSeed := []byte{0, 1, 2, 3, 4}
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prefix := "prefix"
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randlen := 7
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maxlen := 100
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randchars := []rune("xyzw")
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name, err := NewUniqueName(randomSeed, prefix, randlen, maxlen, randchars)
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assert.NoError(t, err)
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assert.Equal(t, "prefixywzwwyz", name)
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}
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func TestUniqueNameNonDeterminism(t *testing.T) {
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t.Parallel()
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// if randomSeed is nil or empty we should be nondeterministic
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for _, randomSeed := range [][]byte{nil, make([]byte, 0)} {
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prefix := "prefix"
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randlen := 4
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maxlen := 100
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name, err := NewUniqueName(randomSeed, prefix, randlen, maxlen, nil)
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assert.NoError(t, err)
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assert.True(t, strings.HasPrefix(name, prefix), "%s does not have prefix %s", name, prefix)
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assert.Len(t, name, len(prefix)+randlen)
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name2, err := NewUniqueName(randomSeed, prefix, randlen, maxlen, nil)
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assert.NoError(t, err)
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assert.True(t, strings.HasPrefix(name2, prefix), "%s does not have prefix %s", name2, prefix)
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assert.Len(t, name2, len(prefix)+randlen)
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assert.NotEqual(t, name, name2)
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}
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}
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