package utils

import (
	"testing"
)

func TestMd5str(t *testing.T) {
	tests := []struct {
		input    string
		expected string
	}{
		{"hello", "5d41402abc4b2a76b9719d911017c592"},
		{"", "d41d8cd98f00b204e9800998ecf8427e"},
		{"http://example.com/stream", "a1b2c3d4e5f6"}, // just length check
	}

	for _, tt := range tests {
		t.Run(tt.input, func(t *testing.T) {
			got := Md5str(tt.input)
			if len(got) != 32 {
				t.Errorf("Md5str(%q) length = %d, want 32", tt.input, len(got))
			}
		})
	}
}

func TestArrayUnique(t *testing.T) {
	input := []string{"a", "b", "a", "c", "b"}
	expected := []string{"a", "b", "c"}
	got := ArrayUnique(input)
	if len(got) != len(expected) {
		t.Errorf("ArrayUnique length = %d, want %d", len(got), len(expected))
	}
	seen := make(map[string]bool)
	for _, v := range got {
		if seen[v] {
			t.Errorf("ArrayUnique returned duplicate: %s", v)
		}
		seen[v] = true
	}
}

func TestExpandPath(t *testing.T) {
	got, err := ExpandPath("/tmp/test.txt")
	if err != nil {
		t.Fatalf("ExpandPath error: %v", err)
	}
	if got == "" {
		t.Error("ExpandPath returned empty string")
	}
}