tls_checker_test.go

package main

import (
	"context"
	"os"
	"os/exec"
	"strings"
	"testing"
)

func TestExtractHostIPv6Literal(t *testing.T) {
	target, ok := extractHost("2001:db8::1", "443")
	if !ok {
		t.Fatalf("expected IPv6 literal to parse")
	}
	if target.Host != "2001:db8::1" {
		t.Fatalf("expected host 2001:db8::1, got %q", target.Host)
	}
	if target.Port != "443" {
		t.Fatalf("expected port 443, got %q", target.Port)
	}
}

func TestDescribeErrorTimeoutWrapped(t *testing.T) {
	err := failure(ErrTLS, context.DeadlineExceeded)
	if got := describeError(err); got != string(ErrTimeout) {
		t.Fatalf("expected %s, got %s", ErrTimeout, got)
	}
}

func TestMain_NoTargets_ExitsNonZero(t *testing.T) {
	tmp := t.TempDir()
	inputPath := tmp + "/empty.txt"
	if err := os.WriteFile(inputPath, []byte("\n# comment\n"), 0o600); err != nil {
		t.Fatalf("write input: %v", err)
	}

	cmd := exec.Command("go", "run", ".", "-i", inputPath, "--no-asn", "-t", "1", "--timeout", "1s", "--retries", "0")
	out, err := cmd.CombinedOutput()
	if err == nil {
		t.Fatalf("expected non-zero exit, got success. output=%s", string(out))
	}
	if !strings.Contains(string(out), "fatal: no hosts to check") {
		t.Fatalf("expected fatal message, got output=%s", string(out))
	}
}