func TestCopyReader(t *testing.T) {
var buf io.Reader = bytes.NewReader([]byte("hello world"))
var r io.Reader
awsutil.Copy(&r, buf)
b, err := ioutil.ReadAll(r)
assert.NoError(t, err)
assert.Equal(t, []byte("hello world"), b)
// empty bytes because this is not a deep copy
b, err = ioutil.ReadAll(buf)
assert.NoError(t, err)
assert.Equal(t, []byte(""), b)
}
func fillPresignedURL(r *aws.Request) {
if !r.ParamsFilled() {
return
}
params := r.Params.(*CopySnapshotInput)
// Stop if PresignedURL/DestinationRegion is set
if params.PresignedURL != nil || params.DestinationRegion != nil {
return
}
// First generate a copy of parameters
r.Params = awsutil.CopyOf(r.Params)
params = r.Params.(*CopySnapshotInput)
// Set destination region. Avoids infinite handler loop.
// Also needed to sign sub-request.
params.DestinationRegion = &r.Service.Config.Region
// Create a new client pointing at source region.
// We will use this to presign the CopySnapshot request against
// the source region
var config aws.Config
awsutil.Copy(&config, r.Service.Config)
config.Endpoint = ""
config.Region = *params.SourceRegion
client := New(&config)
// Presign a CopySnapshot request with modified params
req, _ := client.CopySnapshotRequest(params)
url, err := req.Presign(300 * time.Second) // 5 minutes should be enough.
if err != nil { // bubble error back up to original request
r.Error = err
}
// We have our URL, set it on params
params.PresignedURL = &url
}
func TestCopy(t *testing.T) {
type Foo struct {
A int
B []*string
C map[string]*int
}
// Create the initial value
str1 := "hello"
str2 := "bye bye"
int1 := 1
int2 := 2
f1 := &Foo{
A: 1,
B: []*string{&str1, &str2},
C: map[string]*int{
"A": &int1,
"B": &int2,
},
}
// Do the copy
var f2 Foo
awsutil.Copy(&f2, f1)
// Values are equal
assert.Equal(t, f2.A, f1.A)
assert.Equal(t, f2.B, f1.B)
assert.Equal(t, f2.C, f1.C)
// But pointers are not!
str3 := "nothello"
int3 := 57
f2.A = 100
f2.B[0] = &str3
f2.C["B"] = &int3
assert.NotEqual(t, f2.A, f1.A)
assert.NotEqual(t, f2.B, f1.B)
assert.NotEqual(t, f2.C, f1.C)
}
func ExampleCopy() {
type Foo struct {
A int
B []*string
}
// Create the initial value
str1 := "hello"
str2 := "bye bye"
f1 := &Foo{A: 1, B: []*string{&str1, &str2}}
// Do the copy
var f2 Foo
awsutil.Copy(&f2, f1)
// Print the result
fmt.Println(awsutil.StringValue(f2))
// Output:
// {
// A: 1,
// B: ["hello","bye bye"]
// }
}
func TestCopyNil(t *testing.T) {
var s string
awsutil.Copy(&s, nil)
assert.Equal(t, "", s)
}
func TestCopyPrimitive(t *testing.T) {
str := "hello"
var s string
awsutil.Copy(&s, &str)
assert.Equal(t, "hello", s)
}