utils_test.go

// Copyright 2023 LiveKit, Inc.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

package lksdk

import (
	"strings"
	"testing"
	"unicode/utf8"
)

func TestCompareVersions(t *testing.T) {
	cases := []struct {
		v1, v2 string
		want   int
	}{
		{"1.0.0", "1.0.0", 0},
		{"2.0.0", "1.0.0", 1},
		{"1.0.0", "2.0.0", -1},
		{"1.2.3", "1.2.3", 0},
		{"1.2.4", "1.2.3", 1},
		{"1.2.3", "1.2.4", -1},
		// double-digit components — would fail with string comparison
		{"10.0.0", "9.0.0", 1},
		{"1.10.0", "1.9.0", 1},
		{"1.0.10", "1.0.9", 1},
		// trailing zeros are treated as equal
		{"1.0", "1.0.0", 0},
		{"1.0.0", "1.0", 0},
		// different length where values differ
		{"1.1", "1.0.9", 1},
		{"1.0", "1.1.0", -1},
	}

	for _, tc := range cases {
		got := compareVersions(tc.v1, tc.v2)
		if got != tc.want {
			t.Errorf("compareVersions(%q, %q) = %d, want %d", tc.v1, tc.v2, got, tc.want)
		}
	}
}

func TestTruncateBytesUTF8(t *testing.T) {
	s := "a" + strings.Repeat("é", 200) // 401 bytes
	got := truncateBytes(s, 256)
	if !utf8.ValidString(got) {
		t.Fatalf("invalid UTF-8: %q", got)
	}
	if len(got) != 255 {
		t.Fatalf("expected 255 bytes, got %d", len(got))
	}
	if truncateBytes("abc", 3) != "abc" {
		t.Fatal("string within limit should be unchanged")
	}
}