336 lines
10 KiB
Go
336 lines
10 KiB
Go
// Copyright 2015 The go-ethereum Authors
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// This file is part of the go-ethereum library.
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//
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// The go-ethereum library is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Lesser General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// The go-ethereum library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public License
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// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
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package console
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import (
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"bytes"
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"errors"
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"fmt"
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"io/ioutil"
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"os"
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"strings"
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"testing"
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"time"
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"github.com/ethereum/go-ethereum/common"
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"github.com/ethereum/go-ethereum/core"
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"github.com/ethereum/go-ethereum/eth"
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"github.com/ethereum/go-ethereum/internal/jsre"
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"github.com/ethereum/go-ethereum/node"
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)
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const (
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testInstance = "console-tester"
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testAddress = "0x8605cdbbdb6d264aa742e77020dcbc58fcdce182"
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)
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// hookedPrompter implements UserPrompter to simulate use input via channels.
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type hookedPrompter struct {
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scheduler chan string
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}
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func (p *hookedPrompter) PromptInput(prompt string) (string, error) {
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// Send the prompt to the tester
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select {
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case p.scheduler <- prompt:
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case <-time.After(time.Second):
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return "", errors.New("prompt timeout")
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}
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// Retrieve the response and feed to the console
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select {
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case input := <-p.scheduler:
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return input, nil
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case <-time.After(time.Second):
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return "", errors.New("input timeout")
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}
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}
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func (p *hookedPrompter) PromptPassword(prompt string) (string, error) {
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return "", errors.New("not implemented")
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}
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func (p *hookedPrompter) PromptConfirm(prompt string) (bool, error) {
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return false, errors.New("not implemented")
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}
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func (p *hookedPrompter) SetHistory(history []string) {}
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func (p *hookedPrompter) AppendHistory(command string) {}
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func (p *hookedPrompter) SetWordCompleter(completer WordCompleter) {}
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// tester is a console test environment for the console tests to operate on.
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type tester struct {
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workspace string
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stack *node.Node
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ethereum *eth.Ethereum
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console *Console
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input *hookedPrompter
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output *bytes.Buffer
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}
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// newTester creates a test environment based on which the console can operate.
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// Please ensure you call Close() on the returned tester to avoid leaks.
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func newTester(t *testing.T, confOverride func(*eth.Config)) *tester {
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// Create a temporary storage for the node keys and initialize it
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workspace, err := ioutil.TempDir("", "console-tester-")
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if err != nil {
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t.Fatalf("failed to create temporary keystore: %v", err)
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}
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// Create a networkless protocol stack and start an Ethereum service within
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stack, err := node.New(&node.Config{DataDir: workspace, UseLightweightKDF: true, Name: testInstance})
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if err != nil {
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t.Fatalf("failed to create node: %v", err)
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}
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ethConf := ð.Config{
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Genesis: core.DevGenesisBlock(),
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Etherbase: common.HexToAddress(testAddress),
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PowTest: true,
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}
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if confOverride != nil {
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confOverride(ethConf)
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}
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if err = stack.Register(func(ctx *node.ServiceContext) (node.Service, error) { return eth.New(ctx, ethConf) }); err != nil {
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t.Fatalf("failed to register Ethereum protocol: %v", err)
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}
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// Start the node and assemble the JavaScript console around it
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if err = stack.Start(); err != nil {
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t.Fatalf("failed to start test stack: %v", err)
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}
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client, err := stack.Attach()
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if err != nil {
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t.Fatalf("failed to attach to node: %v", err)
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}
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prompter := &hookedPrompter{scheduler: make(chan string)}
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printer := new(bytes.Buffer)
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console, err := New(Config{
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DataDir: stack.DataDir(),
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DocRoot: "testdata",
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Client: client,
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Prompter: prompter,
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Printer: printer,
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Preload: []string{"preload.js"},
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})
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if err != nil {
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t.Fatalf("failed to create JavaScript console: %v", err)
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}
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// Create the final tester and return
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var ethereum *eth.Ethereum
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stack.Service(ðereum)
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return &tester{
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workspace: workspace,
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stack: stack,
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ethereum: ethereum,
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console: console,
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input: prompter,
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output: printer,
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}
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}
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// Close cleans up any temporary data folders and held resources.
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func (env *tester) Close(t *testing.T) {
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if err := env.console.Stop(false); err != nil {
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t.Errorf("failed to stop embedded console: %v", err)
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}
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if err := env.stack.Stop(); err != nil {
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t.Errorf("failed to stop embedded node: %v", err)
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}
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os.RemoveAll(env.workspace)
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}
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// Tests that the node lists the correct welcome message, notably that it contains
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// the instance name, coinbase account, block number, data directory and supported
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// console modules.
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func TestWelcome(t *testing.T) {
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tester := newTester(t, nil)
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defer tester.Close(t)
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tester.console.Welcome()
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output := string(tester.output.Bytes())
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if want := "Welcome"; !strings.Contains(output, want) {
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t.Fatalf("console output missing welcome message: have\n%s\nwant also %s", output, want)
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}
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if want := fmt.Sprintf("instance: %s", testInstance); !strings.Contains(output, want) {
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t.Fatalf("console output missing instance: have\n%s\nwant also %s", output, want)
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}
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if want := fmt.Sprintf("coinbase: %s", testAddress); !strings.Contains(output, want) {
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t.Fatalf("console output missing coinbase: have\n%s\nwant also %s", output, want)
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}
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if want := "at block: 0"; !strings.Contains(output, want) {
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t.Fatalf("console output missing sync status: have\n%s\nwant also %s", output, want)
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}
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if want := fmt.Sprintf("datadir: %s", tester.workspace); !strings.Contains(output, want) {
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t.Fatalf("console output missing coinbase: have\n%s\nwant also %s", output, want)
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}
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}
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// Tests that JavaScript statement evaluation works as intended.
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func TestEvaluate(t *testing.T) {
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tester := newTester(t, nil)
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defer tester.Close(t)
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tester.console.Evaluate("2 + 2")
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if output := string(tester.output.Bytes()); !strings.Contains(output, "4") {
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t.Fatalf("statement evaluation failed: have %s, want %s", output, "4")
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}
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}
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// Tests that the console can be used in interactive mode.
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func TestInteractive(t *testing.T) {
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// Create a tester and run an interactive console in the background
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tester := newTester(t, nil)
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defer tester.Close(t)
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go tester.console.Interactive()
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// Wait for a promt and send a statement back
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select {
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case <-tester.input.scheduler:
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case <-time.After(time.Second):
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t.Fatalf("initial prompt timeout")
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}
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select {
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case tester.input.scheduler <- "2+2":
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case <-time.After(time.Second):
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t.Fatalf("input feedback timeout")
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}
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// Wait for the second promt and ensure first statement was evaluated
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select {
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case <-tester.input.scheduler:
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case <-time.After(time.Second):
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t.Fatalf("secondary prompt timeout")
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}
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if output := string(tester.output.Bytes()); !strings.Contains(output, "4") {
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t.Fatalf("statement evaluation failed: have %s, want %s", output, "4")
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}
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}
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// Tests that preloaded JavaScript files have been executed before user is given
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// input.
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func TestPreload(t *testing.T) {
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tester := newTester(t, nil)
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defer tester.Close(t)
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tester.console.Evaluate("preloaded")
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if output := string(tester.output.Bytes()); !strings.Contains(output, "some-preloaded-string") {
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t.Fatalf("preloaded variable missing: have %s, want %s", output, "some-preloaded-string")
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}
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}
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// Tests that JavaScript scripts can be executes from the configured asset path.
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func TestExecute(t *testing.T) {
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tester := newTester(t, nil)
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defer tester.Close(t)
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tester.console.Execute("exec.js")
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tester.console.Evaluate("execed")
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if output := string(tester.output.Bytes()); !strings.Contains(output, "some-executed-string") {
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t.Fatalf("execed variable missing: have %s, want %s", output, "some-executed-string")
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}
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}
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// Tests that the JavaScript objects returned by statement executions are properly
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// pretty printed instead of just displaing "[object]".
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func TestPrettyPrint(t *testing.T) {
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tester := newTester(t, nil)
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defer tester.Close(t)
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tester.console.Evaluate("obj = {int: 1, string: 'two', list: [3, 3, 3], obj: {null: null, func: function(){}}}")
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// Define some specially formatted fields
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var (
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one = jsre.NumberColor("1")
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two = jsre.StringColor("\"two\"")
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three = jsre.NumberColor("3")
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null = jsre.SpecialColor("null")
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fun = jsre.FunctionColor("function()")
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)
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// Assemble the actual output we're after and verify
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want := `{
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int: ` + one + `,
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list: [` + three + `, ` + three + `, ` + three + `],
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obj: {
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null: ` + null + `,
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func: ` + fun + `
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},
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string: ` + two + `
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}
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`
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if output := string(tester.output.Bytes()); output != want {
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t.Fatalf("pretty print mismatch: have %s, want %s", output, want)
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}
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}
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// Tests that the JavaScript exceptions are properly formatted and colored.
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func TestPrettyError(t *testing.T) {
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tester := newTester(t, nil)
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defer tester.Close(t)
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tester.console.Evaluate("throw 'hello'")
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want := jsre.ErrorColor("hello") + "\n"
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if output := string(tester.output.Bytes()); output != want {
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t.Fatalf("pretty error mismatch: have %s, want %s", output, want)
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}
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}
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// Tests that tests if the number of indents for JS input is calculated correct.
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func TestIndenting(t *testing.T) {
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testCases := []struct {
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input string
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expectedIndentCount int
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}{
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{`var a = 1;`, 0},
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{`"some string"`, 0},
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{`"some string with (parentesis`, 0},
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{`"some string with newline
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("`, 0},
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{`function v(a,b) {}`, 0},
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{`function f(a,b) { var str = "asd("; };`, 0},
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{`function f(a) {`, 1},
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{`function f(a, function(b) {`, 2},
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{`function f(a, function(b) {
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var str = "a)}";
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});`, 0},
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{`function f(a,b) {
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var str = "a{b(" + a, ", " + b;
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}`, 0},
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{`var str = "\"{"`, 0},
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{`var str = "'("`, 0},
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{`var str = "\\{"`, 0},
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{`var str = "\\\\{"`, 0},
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{`var str = 'a"{`, 0},
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{`var obj = {`, 1},
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{`var obj = { {a:1`, 2},
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{`var obj = { {a:1}`, 1},
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{`var obj = { {a:1}, b:2}`, 0},
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{`var obj = {}`, 0},
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{`var obj = {
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a: 1, b: 2
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}`, 0},
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{`var test = }`, -1},
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{`var str = "a\""; var obj = {`, 1},
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}
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for i, tt := range testCases {
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counted := countIndents(tt.input)
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if counted != tt.expectedIndentCount {
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t.Errorf("test %d: invalid indenting: have %d, want %d", i, counted, tt.expectedIndentCount)
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}
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}
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}
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