Grand test fixup (#138)

* start fixing up tests

* fix up tests + automate with drone

* fiddle with linting

* messing about with drone.yml

* some more fiddling

* hmmm

* add cache

* add vendor directory

* verbose

* ci updates

* update some little things

* update sig

vendor/github.com/wagslane/go-password-validator/length.go

@@ -0,0 +1,94 @@
+package passwordvalidator
+
+const (
+	seqNums      = "0123456789"
+	seqKeyboard0 = "qwertyuiop"
+	seqKeyboard1 = "asdfghjkl"
+	seqKeyboard2 = "zxcvbnm"
+	seqAlphabet  = "abcdefghijklmnopqrstuvwxyz"
+)
+
+func removeMoreThanTwoFromSequence(s, seq string) string {
+	seqRunes := []rune(seq)
+	runes := []rune(s)
+	matches := 0
+	for i := 0; i < len(runes); i++ {
+		for j := 0; j < len(seqRunes); j++ {
+			if i >= len(runes) {
+				break
+			}
+			r := runes[i]
+			r2 := seqRunes[j]
+			if r != r2 {
+				matches = 0
+				continue
+			}
+			// found a match, advance the counter
+			matches++
+			if matches > 2 {
+				runes = deleteRuneAt(runes, i)
+			} else {
+				i++
+			}
+		}
+	}
+	return string(runes)
+}
+
+func deleteRuneAt(runes []rune, i int) []rune {
+	if i >= len(runes) ||
+		i < 0 {
+		return runes
+	}
+	copy(runes[i:], runes[i+1:])
+	runes[len(runes)-1] = 0
+	runes = runes[:len(runes)-1]
+	return runes
+}
+
+func getReversedString(s string) string {
+	n := 0
+	rune := make([]rune, len(s))
+	for _, r := range s {
+		rune[n] = r
+		n++
+	}
+	rune = rune[0:n]
+	// Reverse
+	for i := 0; i < n/2; i++ {
+		rune[i], rune[n-1-i] = rune[n-1-i], rune[i]
+	}
+	// Convert back to UTF-8.
+	return string(rune)
+}
+
+func removeMoreThanTwoRepeatingChars(s string) string {
+	var prevPrev rune
+	var prev rune
+	runes := []rune(s)
+	for i := 0; i < len(runes); i++ {
+		r := runes[i]
+		if r == prev && r == prevPrev {
+			runes = deleteRuneAt(runes, i)
+			i--
+		}
+		prevPrev = prev
+		prev = r
+	}
+	return string(runes)
+}
+
+func getLength(password string) int {
+	password = removeMoreThanTwoRepeatingChars(password)
+	password = removeMoreThanTwoFromSequence(password, seqNums)
+	password = removeMoreThanTwoFromSequence(password, seqKeyboard0)
+	password = removeMoreThanTwoFromSequence(password, seqKeyboard1)
+	password = removeMoreThanTwoFromSequence(password, seqKeyboard2)
+	password = removeMoreThanTwoFromSequence(password, seqAlphabet)
+	password = removeMoreThanTwoFromSequence(password, getReversedString(seqNums))
+	password = removeMoreThanTwoFromSequence(password, getReversedString(seqKeyboard0))
+	password = removeMoreThanTwoFromSequence(password, getReversedString(seqKeyboard1))
+	password = removeMoreThanTwoFromSequence(password, getReversedString(seqKeyboard2))
+	password = removeMoreThanTwoFromSequence(password, getReversedString(seqAlphabet))
+	return len(password)
+}