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package query
import (
"bytes"
"fmt"
"testing"
smithytesting "github.com/aws/smithy-go/testing"
)
func TestEncode(t *testing.T) {
cases := map[string]struct {
Encode func(*Encoder) error
Expect []byte
}{
"object": {
Encode: func(e *Encoder) error {
e.Object().Key("foo").String("bar")
return e.Encode()
},
Expect: []byte(`foo=bar`),
},
"nested object": {
Encode: func(e *Encoder) error {
e.Object().Key("foo").Object().Key("bar").String("baz")
return e.Encode()
},
Expect: []byte(`foo.bar=baz`),
},
"list": {
Encode: func(e *Encoder) error {
list := e.Object().Key("list").Array("spam")
list.Value().String("spam")
list.Value().String("eggs")
return e.Encode()
},
Expect: []byte(`list.spam.1=spam&list.spam.2=eggs`),
},
"empty list": {
Encode: func(e *Encoder) error {
e.Object().Key("list").Array("spam")
return e.Encode()
},
Expect: []byte(`list=`),
},
"flat list": {
Encode: func(e *Encoder) error {
list := e.Object().FlatKey("list").Array("spam")
list.Value().String("spam")
list.Value().String("eggs")
return e.Encode()
},
Expect: []byte(`list.1=spam&list.2=eggs`),
},
"empty flat list": {
Encode: func(e *Encoder) error {
e.Object().FlatKey("list").Array("spam")
return e.Encode()
},
Expect: []byte(`list=`),
},
"map": {
Encode: func(e *Encoder) error {
mapValue := e.Object().Key("map").Map("key", "value")
mapValue.Key("bar").String("baz")
mapValue.Key("foo").String("bin")
return e.Encode()
},
Expect: []byte(`map.entry.1.key=bar&map.entry.1.value=baz&map.entry.2.key=foo&map.entry.2.value=bin`),
},
"flat map": {
Encode: func(e *Encoder) error {
mapValue := e.Object().FlatKey("map").Map("key", "value")
mapValue.Key("bar").String("baz")
mapValue.Key("foo").String("bin")
return e.Encode()
},
Expect: []byte(`map.1.key=bar&map.1.value=baz&map.2.key=foo&map.2.value=bin`),
},
}
for name, c := range cases {
t.Run(name, func(t *testing.T) {
var buff bytes.Buffer
encoder := NewEncoder(&buff)
if err := c.Encode(encoder); err != nil {
t.Fatalf("failed to encode, %v", err)
}
smithytesting.AssertURLFormEqual(t, c.Expect, buff.Bytes())
})
}
}
// limitedWriter exists to isolate WriteString to ensure that any writer
// can actually be used
type limitedWriter struct {
writer *bytes.Buffer
}
func (lw limitedWriter) Write(v []byte) (int, error) {
return lw.writer.Write(v)
}
func TestEncodeHandlesBareIoWriter(t *testing.T) {
buff := limitedWriter{writer: bytes.NewBuffer(nil)}
encoder := NewEncoder(buff)
encoder.Object().Key("foo").String("bar")
if err := encoder.Encode(); err != nil {
t.Fatal(err)
}
smithytesting.AssertURLFormEqual(t, []byte(`foo=bar`), buff.writer.Bytes())
}
// stringWriter exists to ensure that WriteString is called when
// available.
type stringWriter struct {
writer *bytes.Buffer
}
func (w stringWriter) Write(v []byte) (int, error) {
return 0, fmt.Errorf("the WriteString method should be used when available")
}
func (w stringWriter) WriteString(v string) (int, error) {
return w.writer.WriteString(v)
}
func TestEncodeUsesWriteString(t *testing.T) {
buff := stringWriter{writer: bytes.NewBuffer(nil)}
encoder := NewEncoder(buff)
encoder.Object().Key("foo").String("bar")
if err := encoder.Encode(); err != nil {
t.Fatal(err)
}
smithytesting.AssertURLFormEqual(t, []byte(`foo=bar`), buff.writer.Bytes())
}
|
