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- // Copyright (c) 2018 Shivaram Lingamneni
- // released under the MIT license
-
- package passwd
-
- import (
- "testing"
- )
-
- func TestBasic(t *testing.T) {
- hash, err := GenerateFromPassword([]byte("this is my passphrase"), DefaultCost)
- if err != nil || len(hash) != 60 {
- t.Errorf("bad password hash output: error %s, output %s, len %d", err, hash, len(hash))
- }
-
- if CompareHashAndPassword(hash, []byte("this is my passphrase")) != nil {
- t.Errorf("hash comparison failed unexpectedly")
- }
-
- if CompareHashAndPassword(hash, []byte("this is not my passphrase")) == nil {
- t.Errorf("hash comparison succeeded unexpectedly")
- }
- }
-
- func TestLongPassphrases(t *testing.T) {
- longPassphrase := make([]byte, 168)
- for i := range longPassphrase {
- longPassphrase[i] = 'a'
- }
- hash, err := GenerateFromPassword(longPassphrase, DefaultCost)
- if err != nil {
- t.Errorf("bad password hash output: error %s", err)
- }
-
- if CompareHashAndPassword(hash, longPassphrase) != nil {
- t.Errorf("hash comparison failed unexpectedly")
- }
-
- // change a byte of the passphrase beyond the normal 80-character
- // bcrypt truncation boundary:
- longPassphrase[150] = 'b'
- if CompareHashAndPassword(hash, longPassphrase) == nil {
- t.Errorf("hash comparison succeeded unexpectedly")
- }
- }
-
- // this could be useful for tuning the cost parameter on specific hardware
- func BenchmarkComparisons(b *testing.B) {
- pass := []byte("passphrase for benchmarking")
- hash, err := GenerateFromPassword(pass, DefaultCost)
- if err != nil {
- b.Errorf("bad output")
- }
- b.ResetTimer()
- for i := 0; i < b.N; i++ {
- CompareHashAndPassword(hash, pass)
- }
- }
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