utils/strings_test.go

package utils

import (
	"testing"
)

func TestFirstCharacterToUppercase(t *testing.T) {
	data := map[string]string{
		"":            "",
		" ":           " ",
		"houston":     "Houston",
		"san antonio": "San antonio",
		"Austin":      "Austin",
	}

	for d, expectedResult := range data {
		result := FirstCharacterToUppercase(d)
		if result != expectedResult {
			t.Errorf("\ngot:    %q\nwanted: %q\nfor:    %q", result, expectedResult, d)
		}
	}
}

func TestGetSHA256SumOfString(t *testing.T) {
	data := map[string]string{
		"":                 "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855",
		"Hello, World!":    "dffd6021bb2bd5b0af676290809ec3a53191dd81c7f70a4b28688a362182986f",
		"Veni, vidi, vici": "b1610284c94bbf9aa78333e57ddce234a5e845d61e09ce91a7e19fa24737f466",
		"password":         "5e884898da28047151d0e56f8dc6292773603d0d6aabbdd62a11ef721d1542d8",
		"123456":           "8d969eef6ecad3c29a3a629280e686cf0c3f5d5a86aff3ca12020c923adc6c92",
		"123456789":        "15e2b0d3c33891ebb0f1ef609ec419420c20e320ce94c65fbc8c3312448eb225",
		"qwertz":           "d482ba4b7d3218f3e841038c407ed1f94e9846a4dd68e56bab7718903962aa98",
		"12345":            "5994471abb01112afcc18159f6cc74b4f511b99806da59b3caf5a9c173cacfc5",
		"abc123":           "6ca13d52ca70c883e0f0bb101e425a89e8624de51db2d2392593af6a84118090",
		"0000":             "9af15b336e6a9619928537df30b2e6a2376569fcf9d7e773eccede65606529a0",
	}

	for d, expectedResult := range data {
		result := GetSHA256SumOfString(d)
		if result != expectedResult {
			t.Errorf("\ngot:    %q\nwanted: %q\nfor:    %q", result, expectedResult, d)
		}
	}
}

func TestRemoveDoubledStrings(t *testing.T) {
	data := map[string]string{
		"................":          ".",
		"..SENDNUDES..":             ".SENDNUDES.",
		"....SEND........NUDES....": ".SEND.NUDES.",
	}

	for d, expectedResult := range data {
		result := RemoveDoubledStrings(d, ".")
		if result != expectedResult {
			t.Errorf("\ngot:    %q\nwanted: %q\nfor:    %q", result, expectedResult, d)
		}
	}
}

func TestRemoveLeadingStrings(t *testing.T) {
	data := map[string]string{
		"":  "",
		".": "",
		"...Jahr 2022... die überleben wollen...": "Jahr 2022... die überleben wollen...",
	}

	for d, expectedResult := range data {
		result := RemoveLeadingStrings(d, ".")
		if result != expectedResult {
			t.Errorf("\ngot:    %q\nwanted: %q\nfor:    %q", result, expectedResult, d)
		}
	}

	data = map[string]string{
		"":     "",
		".":    ".",
		"..":   "..",
		"...":  "",
		"....": ".",
	}

	for d, expectedResult := range data {
		result := RemoveLeadingStrings(d, "...")
		if result != expectedResult {
			t.Errorf("\ngot:    %q\nwanted: %q\nfor:    %q", result, expectedResult, d)
		}
	}
}

func TestSanitizeStringWithWhitelist(t *testing.T) {
	whitelistedChars := []string{
		".", "-",
		"0", "1", "2", "3", "4", "5", "6", "7", "8", "9",
		"A", "B", "C", "D", "E", "F", "G", "H", "I", "J", "K", "L", "M",
		"N", "O", "P", "Q", "R", "S", "T", "U", "V", "W", "X", "Y", "Z",
		"a", "b", "c", "d", "e", "f", "g", "h", "i", "j", "k", "l", "m",
		"n", "o", "p", "q", "r", "s", "t", "u", "v", "w", "x", "y", "z",
	}

	whitelist := map[string]string{}

	for _, c := range whitelistedChars {
		whitelist[c] = c
	}

	data := map[string]string{
		"! \" # $ % & ' ( ) * + , - . / 0 1 2 3 4 5 6 7 8 9 : ; < = > ? @ A B C D E F G H I J K L M N O P Q R S T U V W X Y Z [ \\ ] ^ _ ` a b c d e f g h i j k l m n o p q r s t u v w x y z { | } ~": "-.0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz",
		"Während Adam lacht, jagen zwölf Boxkämpfer Eva quer über den großen Sylter Deich - für satte 12.345.667,89 €uro":                                                                               "WhrendAdamlachtjagenzwlfBoxkmpferEvaquerberdengroenSylterDeich-frsatte12.345.66789uro",
	}

	for d, expectedResult := range data {
		result := SanitizeStringWithWhitelist(d, whitelist)
		if result != expectedResult {
			t.Errorf("\ngot:    %s\nwanted: %s\nfor:    %q", result, expectedResult, d)
		}
	}
}