213ac6ddbe
The alphanumeric-normalisation helper was duplicated verbatim in the common-third-party owned-domains resolver and the cookiebanner tracker mapping worker. Hoist it into a new dependency-free strutil package so both call sites share one implementation and one test. Signed-off-by: Émile Ré <emile@probo.com>
49 lines
1.5 KiB
Go
49 lines
1.5 KiB
Go
// Copyright (c) 2026 Probo Inc <hello@probo.com>.
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//
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// Permission to use, copy, modify, and/or distribute this software for any
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// purpose with or without fee is hereby granted, provided that the above
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// copyright notice and this permission notice appear in all copies.
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//
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// THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH
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// REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
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// AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT,
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// INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
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// LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
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// OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
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// PERFORMANCE OF THIS SOFTWARE.
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package strutil_test
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import (
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"testing"
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"github.com/stretchr/testify/assert"
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"go.probo.inc/probo/pkg/strutil"
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)
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func TestNormalizeAlnum(t *testing.T) {
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t.Parallel()
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tests := []struct {
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name string
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input string
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expected string
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}{
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{name: "letters lowercased", input: "Letaido", expected: "letaido"},
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{name: "strips punctuation and spaces", input: "letaido.com - Inc", expected: "letaidocominc"},
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{name: "keeps digits", input: "auth0", expected: "auth0"},
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{name: "empty", input: "", expected: ""},
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{name: "only punctuation", input: "-_.:", expected: ""},
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}
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for _, tt := range tests {
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t.Run(
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tt.name,
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func(t *testing.T) {
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t.Parallel()
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assert.Equal(t, tt.expected, strutil.NormalizeAlnum(tt.input))
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},
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)
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}
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}
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