pacwrapper_test.go

// Copyright 2019, 2022 The Alpaca Authors
//
// 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 main

import (
	"io"
	"net/http"
	"net/http/httptest"
	"testing"

	"github.com/stretchr/testify/assert"
	"github.com/stretchr/testify/require"
)

func TestWrapPAC(t *testing.T) {
	pw := NewPACWrapper(PACData{Port: 1234})
	pac := `function FindProxyForURL(url, host) { return "DIRECT" }`
	pw.Wrap([]byte(pac))
	assert.Contains(t, pw.alpacaPAC, pac)
	assert.Contains(t, pw.alpacaPAC, `"DIRECT" : "PROXY localhost:1234"`)
}

func TestWrapEmptyPAC(t *testing.T) {
	pw := NewPACWrapper(PACData{Port: 1234})
	pw.Wrap(nil)
	assert.Contains(t, pw.alpacaPAC, `return "DIRECT"`)
}

func TestPACServe(t *testing.T) {
	pw := NewPACWrapper(PACData{Port: 1234})
	pac := `function FindProxyForURL(url, host) { return "DIRECT" }`
	pw.Wrap([]byte(pac))
	mux := http.NewServeMux()
	pw.SetupHandlers(mux)
	server := httptest.NewServer(mux)
	defer server.Close()

	resp, err := http.Get(server.URL + "/alpaca.pac")
	require.NoError(t, err)

	assert.Equal(t, resp.StatusCode, http.StatusOK)
	assert.Equal(t, "application/x-ns-proxy-autoconfig", resp.Header.Get("Content-Type"))
	b, err := io.ReadAll(resp.Body)
	body := string(b)
	require.NoError(t, err)
	assert.Contains(t, body, pac)
	assert.Contains(t, body, `"DIRECT" : "PROXY localhost:1234"`)
	resp.Body.Close()
}