aboutsummaryrefslogtreecommitdiffstats
path: root/console/console_test.go
blob: 7738d0c44208b9db46a51e0babd0f7810cd6ba48 (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
// Copyright 2015 The go-ethereum Authors
// This file is part of the go-ethereum library.
//
// The go-ethereum library is free software: you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// The go-ethereum library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.

package console

import (
    "bytes"
    "errors"
    "fmt"
    "io/ioutil"
    "math/big"
    "os"
    "path/filepath"
    "strings"
    "testing"
    "time"

    "github.com/ethereum/go-ethereum/accounts"
    "github.com/ethereum/go-ethereum/common"
    "github.com/ethereum/go-ethereum/core"
    "github.com/ethereum/go-ethereum/eth"
    "github.com/ethereum/go-ethereum/internal/jsre"
    "github.com/ethereum/go-ethereum/node"
)

const (
    testInstance = "console-tester"
    testAddress  = "0x8605cdbbdb6d264aa742e77020dcbc58fcdce182"
)

// hookedPrompter implements UserPrompter to simulate use input via channels.
type hookedPrompter struct {
    scheduler chan string
}

func (p *hookedPrompter) PromptInput(prompt string) (string, error) {
    // Send the prompt to the tester
    select {
    case p.scheduler <- prompt:
    case <-time.After(time.Second):
        return "", errors.New("prompt timeout")
    }
    // Retrieve the response and feed to the console
    select {
    case input := <-p.scheduler:
        return input, nil
    case <-time.After(time.Second):
        return "", errors.New("input timeout")
    }
}

func (p *hookedPrompter) PromptPassword(prompt string) (string, error) {
    return "", errors.New("not implemented")
}
func (p *hookedPrompter) PromptConfirm(prompt string) (bool, error) {
    return false, errors.New("not implemented")
}
func (p *hookedPrompter) SetHistory(history []string)              {}
func (p *hookedPrompter) AppendHistory(command string)             {}
func (p *hookedPrompter) SetWordCompleter(completer WordCompleter) {}

// tester is a console test environment for the console tests to operate on.
type tester struct {
    workspace string
    stack     *node.Node
    ethereum  *eth.Ethereum
    console   *Console
    input     *hookedPrompter
    output    *bytes.Buffer

    lastConfirm string
}

// newTester creates a test environment based on which the console can operate.
// Please ensure you call Close() on the returned tester to avoid leaks.
func newTester(t *testing.T, confOverride func(*eth.Config)) *tester {
    // Create a temporary storage for the node keys and initialize it
    workspace, err := ioutil.TempDir("", "console-tester-")
    if err != nil {
        t.Fatalf("failed to create temporary keystore: %v", err)
    }
    accman := accounts.NewPlaintextManager(filepath.Join(workspace, "keystore"))

    // Create a networkless protocol stack and start an Ethereum service within
    stack, err := node.New(&node.Config{DataDir: workspace, Name: testInstance, NoDiscovery: true})
    if err != nil {
        t.Fatalf("failed to create node: %v", err)
    }
    ethConf := &eth.Config{
        ChainConfig:    &core.ChainConfig{HomesteadBlock: new(big.Int)},
        Etherbase:      common.HexToAddress(testAddress),
        AccountManager: accman,
        PowTest:        true,
    }
    if confOverride != nil {
        confOverride(ethConf)
    }
    if err = stack.Register(func(ctx *node.ServiceContext) (node.Service, error) { return eth.New(ctx, ethConf) }); err != nil {
        t.Fatalf("failed to register Ethereum protocol: %v", err)
    }
    // Start the node and assemble the JavaScript console around it
    if err = stack.Start(); err != nil {
        t.Fatalf("failed to start test stack: %v", err)
    }
    client, err := stack.Attach()
    if err != nil {
        t.Fatalf("failed to attach to node: %v", err)
    }
    prompter := &hookedPrompter{scheduler: make(chan string)}
    printer := new(bytes.Buffer)

    console, err := New(Config{
        DataDir:  stack.DataDir(),
        DocRoot:  "testdata",
        Client:   client,
        Prompter: prompter,
        Printer:  printer,
        Preload:  []string{"preload.js"},
    })
    if err != nil {
        t.Fatalf("failed to create JavaScript console: %v", err)
    }
    // Create the final tester and return
    var ethereum *eth.Ethereum
    stack.Service(&ethereum)

    return &tester{
        workspace: workspace,
        stack:     stack,
        ethereum:  ethereum,
        console:   console,
        input:     prompter,
        output:    printer,
    }
}

// Close cleans up any temporary data folders and held resources.
func (env *tester) Close(t *testing.T) {
    if err := env.console.Stop(false); err != nil {
        t.Errorf("failed to stop embedded console: %v", err)
    }
    if err := env.stack.Stop(); err != nil {
        t.Errorf("failed to stop embedded node: %v", err)
    }
    os.RemoveAll(env.workspace)
}

// Tests that the node lists the correct welcome message, notably that it contains
// the instance name, coinbase account, block number, data directory and supported
// console modules.
func TestWelcome(t *testing.T) {
    tester := newTester(t, nil)
    defer tester.Close(t)

    tester.console.Welcome()

    output := string(tester.output.Bytes())
    if want := "Welcome"; !strings.Contains(output, want) {
        t.Fatalf("console output missing welcome message: have\n%s\nwant also %s", output, want)
    }
    if want := fmt.Sprintf("instance: %s", testInstance); !strings.Contains(output, want) {
        t.Fatalf("console output missing instance: have\n%s\nwant also %s", output, want)
    }
    if want := fmt.Sprintf("coinbase: %s", testAddress); !strings.Contains(output, want) {
        t.Fatalf("console output missing coinbase: have\n%s\nwant also %s", output, want)
    }
    if want := "at block: 0"; !strings.Contains(output, want) {
        t.Fatalf("console output missing sync status: have\n%s\nwant also %s", output, want)
    }
    if want := fmt.Sprintf("datadir: %s", tester.workspace); !strings.Contains(output, want) {
        t.Fatalf("console output missing coinbase: have\n%s\nwant also %s", output, want)
    }
}

// Tests that JavaScript statement evaluation works as intended.
func TestEvaluate(t *testing.T) {
    tester := newTester(t, nil)
    defer tester.Close(t)

    tester.console.Evaluate("2 + 2")
    if output := string(tester.output.Bytes()); !strings.Contains(output, "4") {
        t.Fatalf("statement evaluation failed: have %s, want %s", output, "4")
    }
}

// Tests that the console can be used in interactive mode.
func TestInteractive(t *testing.T) {
    // Create a tester and run an interactive console in the background
    tester := newTester(t, nil)
    defer tester.Close(t)

    go tester.console.Interactive()

    // Wait for a promt and send a statement back
    select {
    case <-tester.input.scheduler:
    case <-time.After(time.Second):
        t.Fatalf("initial prompt timeout")
    }
    select {
    case tester.input.scheduler <- "2+2":
    case <-time.After(time.Second):
        t.Fatalf("input feedback timeout")
    }
    // Wait for the second promt and ensure first statement was evaluated
    select {
    case <-tester.input.scheduler:
    case <-time.After(time.Second):
        t.Fatalf("secondary prompt timeout")
    }
    if output := string(tester.output.Bytes()); !strings.Contains(output, "4") {
        t.Fatalf("statement evaluation failed: have %s, want %s", output, "4")
    }
}

// Tests that preloaded JavaScript files have been executed before user is given
// input.
func TestPreload(t *testing.T) {
    tester := newTester(t, nil)
    defer tester.Close(t)

    tester.console.Evaluate("preloaded")
    if output := string(tester.output.Bytes()); !strings.Contains(output, "some-preloaded-string") {
        t.Fatalf("preloaded variable missing: have %s, want %s", output, "some-preloaded-string")
    }
}

// Tests that JavaScript scripts can be executes from the configured asset path.
func TestExecute(t *testing.T) {
    tester := newTester(t, nil)
    defer tester.Close(t)

    tester.console.Execute("exec.js")

    tester.console.Evaluate("execed")
    if output := string(tester.output.Bytes()); !strings.Contains(output, "some-executed-string") {
        t.Fatalf("execed variable missing: have %s, want %s", output, "some-executed-string")
    }
}

// Tests that the JavaScript objects returned by statement executions are properly
// pretty printed instead of just displaing "[object]".
func TestPrettyPrint(t *testing.T) {
    tester := newTester(t, nil)
    defer tester.Close(t)

    tester.console.Evaluate("obj = {int: 1, string: 'two', list: [3, 3, 3], obj: {null: null, func: function(){}}}")

    // Define some specially formatted fields
    var (
        one   = jsre.NumberColor("1")
        two   = jsre.StringColor("\"two\"")
        three = jsre.NumberColor("3")
        null  = jsre.SpecialColor("null")
        fun   = jsre.FunctionColor("function()")
    )
    // Assemble the actual output we're after and verify
    want := `{
  int: ` + one + `,
  list: [` + three + `, ` + three + `, ` + three + `],
  obj: {
    null: ` + null + `,
    func: ` + fun + `
  },
  string: ` + two + `
}
`
    if output := string(tester.output.Bytes()); output != want {
        t.Fatalf("pretty print mismatch: have %s, want %s", output, want)
    }
}

// Tests that the JavaScript exceptions are properly formatted and colored.
func TestPrettyError(t *testing.T) {
    tester := newTester(t, nil)
    defer tester.Close(t)
    tester.console.Evaluate("throw 'hello'")

    want := jsre.ErrorColor("hello") + "\n"
    if output := string(tester.output.Bytes()); output != want {
        t.Fatalf("pretty error mismatch: have %s, want %s", output, want)
    }
}

// Tests that tests if the number of indents for JS input is calculated correct.
func TestIndenting(t *testing.T) {
    testCases := []struct {
        input               string
        expectedIndentCount int
    }{
        {`var a = 1;`, 0},
        {`"some string"`, 0},
        {`"some string with (parentesis`, 0},
        {`"some string with newline
        ("`, 0},
        {`function v(a,b) {}`, 0},
        {`function f(a,b) { var str = "asd("; };`, 0},
        {`function f(a) {`, 1},
        {`function f(a, function(b) {`, 2},
        {`function f(a, function(b) {
             var str = "a)}";
          });`, 0},
        {`function f(a,b) {
           var str = "a{b(" + a, ", " + b;
           }`, 0},
        {`var str = "\"{"`, 0},
        {`var str = "'("`, 0},
        {`var str = "\\{"`, 0},
        {`var str = "\\\\{"`, 0},
        {`var str = 'a"{`, 0},
        {`var obj = {`, 1},
        {`var obj = { {a:1`, 2},
        {`var obj = { {a:1}`, 1},
        {`var obj = { {a:1}, b:2}`, 0},
        {`var obj = {}`, 0},
        {`var obj = {
            a: 1, b: 2
        }`, 0},
        {`var test = }`, -1},
        {`var str = "a\""; var obj = {`, 1},
    }

    for i, tt := range testCases {
        counted := countIndents(tt.input)
        if counted != tt.expectedIndentCount {
            t.Errorf("test %d: invalid indenting: have %d, want %d", i, counted, tt.expectedIndentCount)
        }
    }
}