package server_test

import "testing"

// TestListenAddress checks that the server listens on BIND_ADDRESS
// and PORT, and on port 8080 on every interface when neither is set.
// The container image sets both, to keep the backend on loopback
// behind nginx.
func TestListenAddress(t *testing.T) {
	tests := []struct {
		bindAddress string
		port        string
		want        string
	}{
		{bindAddress: "", port: "", want: ":8080"},
		{bindAddress: "127.0.0.1", port: "8081", want: "127.0.0.1:8081"},
		{bindAddress: "::1", port: "8081", want: "[::1]:8081"},
	}

	for _, tt := range tests {
		t.Run(tt.want, func(t *testing.T) {
			// t.Setenv rules out t.Parallel.
			t.Setenv("BIND_ADDRESS", tt.bindAddress)
			t.Setenv("PORT", tt.port)

			got := newServer(t).ListenAddr()
			if got != tt.want {
				t.Errorf("listen address = %q, want %q", got, tt.want)
			}
		})
	}
}