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package passgen
import (
"bytes"
"io"
"strings"
"testing"
)
func TestGenerateUsesRequestedLengthAndAlphabet(t *testing.T) {
opts := Options{
Length: 64,
UseLower: true,
UseUpper: false,
UseDigits: false,
}
password, err := Generate(opts)
if err != nil {
t.Fatalf("Generate returned error: %v", err)
}
if len(password) != opts.Length {
t.Fatalf("password length = %d, want %d", len(password), opts.Length)
}
for _, ch := range password {
if !strings.ContainsRune(lowerChars, ch) {
t.Fatalf("password contains character outside requested alphabet: %q", ch)
}
}
}
func TestGenerateRejectsEmptyAlphabet(t *testing.T) {
_, err := Generate(Options{Length: 24})
if err != ErrEmptyAlphabet {
t.Fatalf("Generate error = %v, want %v", err, ErrEmptyAlphabet)
}
}
func TestGenerateUsesProvidedRandomReader(t *testing.T) {
opts := Options{
Length: 3,
UseLower: true,
UseUpper: false,
UseDigits: false,
UseSymbols: false,
Random: bytes.NewReader([]byte{0, 1, 2}),
}
password, err := Generate(opts)
if err != nil {
t.Fatalf("Generate returned error: %v", err)
}
if password != "abc" {
t.Fatalf("password = %q, want %q", password, "abc")
}
}
func TestGenerateReturnsRandomReaderError(t *testing.T) {
opts := Options{
Length: 1,
UseLower: true,
UseUpper: false,
UseDigits: false,
UseSymbols: false,
Random: strings.NewReader(""),
}
if _, err := Generate(opts); err == nil {
t.Fatalf("Generate returned nil error")
} else if !strings.Contains(err.Error(), io.EOF.Error()) {
t.Fatalf("Generate error = %v, want EOF context", err)
}
}
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