github.com/aigarnetwork/aigar@v0.0.0-20191115204914-d59a6eb70f8e/internal/jsre/jsre_test.go (about)

     1  //  Copyright 2018 The go-ethereum Authors
     2  //  Copyright 2019 The go-aigar Authors
     3  //  This file is part of the go-aigar library.
     4  //
     5  //  The go-aigar library is free software: you can redistribute it and/or modify
     6  //  it under the terms of the GNU Lesser General Public License as published by
     7  //  the Free Software Foundation, either version 3 of the License, or
     8  //  (at your option) any later version.
     9  //
    10  //  The go-aigar library is distributed in the hope that it will be useful,
    11  //  but WITHOUT ANY WARRANTY; without even the implied warranty of
    12  //  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
    13  //  GNU Lesser General Public License for more details.
    14  //
    15  //  You should have received a copy of the GNU Lesser General Public License
    16  //  along with the go-aigar library. If not, see <http://www.gnu.org/licenses/>.
    17  
    18  package jsre
    19  
    20  import (
    21  	"io/ioutil"
    22  	"os"
    23  	"path"
    24  	"testing"
    25  	"time"
    26  
    27  	"github.com/robertkrimen/otto"
    28  )
    29  
    30  type testNativeObjectBinding struct{}
    31  
    32  type msg struct {
    33  	Msg string
    34  }
    35  
    36  func (no *testNativeObjectBinding) TestMethod(call otto.FunctionCall) otto.Value {
    37  	m, err := call.Argument(0).ToString()
    38  	if err != nil {
    39  		return otto.UndefinedValue()
    40  	}
    41  	v, _ := call.Otto.ToValue(&msg{m})
    42  	return v
    43  }
    44  
    45  func newWithTestJS(t *testing.T, testjs string) (*JSRE, string) {
    46  	dir, err := ioutil.TempDir("", "jsre-test")
    47  	if err != nil {
    48  		t.Fatal("cannot create temporary directory:", err)
    49  	}
    50  	if testjs != "" {
    51  		if err := ioutil.WriteFile(path.Join(dir, "test.js"), []byte(testjs), os.ModePerm); err != nil {
    52  			t.Fatal("cannot create test.js:", err)
    53  		}
    54  	}
    55  	return New(dir, os.Stdout), dir
    56  }
    57  
    58  func TestExec(t *testing.T) {
    59  	jsre, dir := newWithTestJS(t, `msg = "testMsg"`)
    60  	defer os.RemoveAll(dir)
    61  
    62  	err := jsre.Exec("test.js")
    63  	if err != nil {
    64  		t.Errorf("expected no error, got %v", err)
    65  	}
    66  	val, err := jsre.Run("msg")
    67  	if err != nil {
    68  		t.Errorf("expected no error, got %v", err)
    69  	}
    70  	if !val.IsString() {
    71  		t.Errorf("expected string value, got %v", val)
    72  	}
    73  	exp := "testMsg"
    74  	got, _ := val.ToString()
    75  	if exp != got {
    76  		t.Errorf("expected '%v', got '%v'", exp, got)
    77  	}
    78  	jsre.Stop(false)
    79  }
    80  
    81  func TestNatto(t *testing.T) {
    82  	jsre, dir := newWithTestJS(t, `setTimeout(function(){msg = "testMsg"}, 1);`)
    83  	defer os.RemoveAll(dir)
    84  
    85  	err := jsre.Exec("test.js")
    86  	if err != nil {
    87  		t.Errorf("expected no error, got %v", err)
    88  	}
    89  	time.Sleep(100 * time.Millisecond)
    90  	val, err := jsre.Run("msg")
    91  	if err != nil {
    92  		t.Errorf("expected no error, got %v", err)
    93  	}
    94  	if !val.IsString() {
    95  		t.Errorf("expected string value, got %v", val)
    96  	}
    97  	exp := "testMsg"
    98  	got, _ := val.ToString()
    99  	if exp != got {
   100  		t.Errorf("expected '%v', got '%v'", exp, got)
   101  	}
   102  	jsre.Stop(false)
   103  }
   104  
   105  func TestBind(t *testing.T) {
   106  	jsre := New("", os.Stdout)
   107  	defer jsre.Stop(false)
   108  
   109  	jsre.Bind("no", &testNativeObjectBinding{})
   110  
   111  	_, err := jsre.Run(`no.TestMethod("testMsg")`)
   112  	if err != nil {
   113  		t.Errorf("expected no error, got %v", err)
   114  	}
   115  }
   116  
   117  func TestLoadScript(t *testing.T) {
   118  	jsre, dir := newWithTestJS(t, `msg = "testMsg"`)
   119  	defer os.RemoveAll(dir)
   120  
   121  	_, err := jsre.Run(`loadScript("test.js")`)
   122  	if err != nil {
   123  		t.Errorf("expected no error, got %v", err)
   124  	}
   125  	val, err := jsre.Run("msg")
   126  	if err != nil {
   127  		t.Errorf("expected no error, got %v", err)
   128  	}
   129  	if !val.IsString() {
   130  		t.Errorf("expected string value, got %v", val)
   131  	}
   132  	exp := "testMsg"
   133  	got, _ := val.ToString()
   134  	if exp != got {
   135  		t.Errorf("expected '%v', got '%v'", exp, got)
   136  	}
   137  	jsre.Stop(false)
   138  }