1package cmd
 2
 3import (
 4	"testing"
 5)
 6
 7func TestIsInteractive(t *testing.T) {
 8	tests := []struct {
 9		name            string
10		stdinIsTerminal bool
11		envValue        string // empty string means env is cleared/unset
12		want            bool
13	}{
14		{
15			name:            "terminal with empty env returns true",
16			stdinIsTerminal: true,
17			envValue:        "",
18			want:            true,
19		},
20		{
21			name:            "terminal with env=1 returns false",
22			stdinIsTerminal: true,
23			envValue:        "1",
24			want:            false,
25		},
26		{
27			name:            "terminal with env=true returns false",
28			stdinIsTerminal: true,
29			envValue:        "true",
30			want:            false,
31		},
32		{
33			name:            "non-terminal with empty env returns false",
34			stdinIsTerminal: false,
35			envValue:        "",
36			want:            false,
37		},
38		{
39			name:            "non-terminal with env=1 returns false",
40			stdinIsTerminal: false,
41			envValue:        "1",
42			want:            false,
43		},
44		{
45			name:            "terminal with env=0 returns false",
46			stdinIsTerminal: true,
47			envValue:        "0",
48			want:            false,
49		},
50	}
51
52	for _, tt := range tests {
53		t.Run(tt.name, func(t *testing.T) {
54			// Save and restore the original function.
55			original := isStdinTerminal
56			t.Cleanup(func() {
57				isStdinTerminal = original
58			})
59
60			// Inject fake terminal check.
61			isStdinTerminal = func() bool {
62				return tt.stdinIsTerminal
63			}
64
65			// Set env var. t.Setenv("", "") clears/unsets it.
66			t.Setenv("KELD_NONINTERACTIVE", tt.envValue)
67
68			got := isInteractive()
69			if got != tt.want {
70				t.Errorf("isInteractive() = %v, want %v", got, tt.want)
71			}
72		})
73	}
74}