forked from rogchap/v8go
-
Notifications
You must be signed in to change notification settings - Fork 0
/
Copy pathfunction_template_test.go
162 lines (136 loc) · 3.78 KB
/
function_template_test.go
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
// Copyright 2021 Roger Chapman and the v8go contributors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
package v8go_test
import (
"fmt"
"io/ioutil"
"net/http"
"strings"
"testing"
"rogchap.com/v8go"
)
func TestFunctionTemplate(t *testing.T) {
t.Parallel()
iso, _ := v8go.NewIsolate()
defer iso.Dispose()
fn := v8go.NewFunctionTemplate(iso, func(*v8go.FunctionCallbackInfo) *v8go.Value { return nil })
if fn == nil {
t.Error("expected FunctionTemplate, but got <nil>")
}
}
func TestFunctionTemplate_panic_on_nil_isolate(t *testing.T) {
t.Parallel()
defer func() {
if err := recover(); err == nil {
t.Error("expected panic")
}
}()
v8go.NewFunctionTemplate(nil, func(*v8go.FunctionCallbackInfo) *v8go.Value {
t.Error("unexpected call")
return nil
})
}
func TestFunctionTemplate_panic_on_nil_callback(t *testing.T) {
t.Parallel()
defer func() {
if err := recover(); err == nil {
t.Error("expected panic")
}
}()
iso, _ := v8go.NewIsolate()
defer iso.Dispose()
v8go.NewFunctionTemplate(iso, nil)
}
func TestFunctionTemplateGetFunction(t *testing.T) {
t.Parallel()
iso, _ := v8go.NewIsolate()
defer iso.Dispose()
ctx, _ := v8go.NewContext(iso)
defer ctx.Close()
var args *v8go.FunctionCallbackInfo
tmpl := v8go.NewFunctionTemplate(iso, func(info *v8go.FunctionCallbackInfo) *v8go.Value {
args = info
reply, _ := v8go.NewValue(iso, "hello")
return reply
})
fn := tmpl.GetFunction(ctx)
ten, err := v8go.NewValue(iso, int32(10))
if err != nil {
t.Fatal(err)
}
ret, err := fn.Call(ten)
if err != nil {
t.Fatal(err)
}
if len(args.Args()) != 1 || args.Args()[0].String() != "10" {
t.Fatalf("expected args [10], got: %+v", args.Args())
}
if !ret.IsString() || ret.String() != "hello" {
t.Fatalf("expected return value of 'hello', was: %v", ret)
}
}
func TestFunctionCallbackInfoThis(t *testing.T) {
t.Parallel()
iso, _ := v8go.NewIsolate()
foo := v8go.NewObjectTemplate(iso)
foo.Set("name", "foobar")
var this *v8go.Object
barfn := v8go.NewFunctionTemplate(iso, func(info *v8go.FunctionCallbackInfo) *v8go.Value {
this = info.This()
return nil
})
foo.Set("bar", barfn)
global := v8go.NewObjectTemplate(iso)
global.Set("foo", foo)
ctx, _ := v8go.NewContext(iso, global)
ctx.RunScript("foo.bar()", "")
v, _ := this.Get("name")
if v.String() != "foobar" {
t.Errorf("expected this.name to be foobar, but got %q", v)
}
}
func ExampleFunctionTemplate() {
iso, _ := v8go.NewIsolate()
defer iso.Dispose()
global := v8go.NewObjectTemplate(iso)
printfn := v8go.NewFunctionTemplate(iso, func(info *v8go.FunctionCallbackInfo) *v8go.Value {
fmt.Printf("%+v\n", info.Args())
return nil
})
global.Set("print", printfn, v8go.ReadOnly)
ctx, _ := v8go.NewContext(iso, global)
defer ctx.Close()
ctx.RunScript("print('foo', 'bar', 0, 1)", "")
// Output:
// [foo bar 0 1]
}
func ExampleFunctionTemplate_fetch() {
iso, _ := v8go.NewIsolate()
defer iso.Dispose()
global := v8go.NewObjectTemplate(iso)
fetchfn := v8go.NewFunctionTemplate(iso, func(info *v8go.FunctionCallbackInfo) *v8go.Value {
args := info.Args()
url := args[0].String()
resolver, _ := v8go.NewPromiseResolver(info.Context())
go func() {
res, _ := http.Get(url)
body, _ := ioutil.ReadAll(res.Body)
val, _ := v8go.NewValue(iso, string(body))
resolver.Resolve(val)
}()
return resolver.GetPromise().Value
})
global.Set("fetch", fetchfn, v8go.ReadOnly)
ctx, _ := v8go.NewContext(iso, global)
defer ctx.Close()
val, _ := ctx.RunScript("fetch('https://rogchap.com/v8go')", "")
prom, _ := val.AsPromise()
// wait for the promise to resolve
for prom.State() == v8go.Pending {
continue
}
fmt.Printf("%s\n", strings.Split(prom.Result().String(), "\n")[0])
// Output:
// <!DOCTYPE html>
}