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// Copyright 2015 go-swagger maintainers
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package runtime
import (
"bytes"
"errors"
"fmt"
"net/http/httptest"
"testing"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
)
var consProdText = `The quick brown fox jumped over the lazy dog.`
func TestTextConsumer(t *testing.T) {
cons := TextConsumer()
// can consume as a string
var str string
err1 := cons.Consume(bytes.NewBufferString(consProdText), &str)
require.NoError(t, err1)
assert.Equal(t, consProdText, str)
var tu textUnmarshalDummy
// can consume as a TextUnmarshaler
err3 := cons.Consume(bytes.NewBufferString(consProdText), &tu)
require.NoError(t, err3)
assert.Equal(t, consProdText, tu.str)
// text unmarshal objects can return an error as well, this will be propagated
require.NoError(t, cons.Consume(bytes.NewBuffer(nil), &tu))
// when readers can't be read, those errors will be propogated as well
require.Error(t, cons.Consume(new(nopReader), &tu))
// readers can also not be nil
require.Error(t, cons.Consume(nil, &tu))
// can't consume nil ptr's or unsupported types
require.Error(t, cons.Consume(bytes.NewBufferString(consProdText), nil))
require.Error(t, cons.Consume(bytes.NewBufferString(consProdText), 42))
require.Error(t, cons.Consume(bytes.NewBufferString(consProdText), &struct{}{}))
}
type textUnmarshalDummy struct {
str string
}
func (t *textUnmarshalDummy) UnmarshalText(b []byte) error {
if len(b) == 0 {
return errors.New("no text given")
}
t.str = string(b)
return nil
}
type nopReader struct{}
func (n *nopReader) Read(_ []byte) (int, error) {
return 0, errors.New("nop")
}
func TestTextProducer(t *testing.T) {
prod := TextProducer()
rw := httptest.NewRecorder()
err := prod.Produce(rw, consProdText)
require.NoError(t, err)
assert.Equal(t, consProdText, rw.Body.String())
rw2 := httptest.NewRecorder()
err2 := prod.Produce(rw2, &consProdText)
require.NoError(t, err2)
assert.Equal(t, consProdText, rw2.Body.String())
// should always work with type aliases
// as an alias is sometimes given by generated go-swagger code
type alias string
aliasProdText := alias(consProdText)
rw3 := httptest.NewRecorder()
err3 := prod.Produce(rw3, aliasProdText)
require.NoError(t, err3)
assert.Equal(t, consProdText, rw3.Body.String())
rw4 := httptest.NewRecorder()
err4 := prod.Produce(rw4, &aliasProdText)
require.NoError(t, err4)
assert.Equal(t, consProdText, rw4.Body.String())
const answer = "42"
// Should always work with objects implementing Stringer interface
rw5 := httptest.NewRecorder()
err5 := prod.Produce(rw5, &stringerDummy{answer})
require.NoError(t, err5)
assert.Equal(t, answer, rw5.Body.String())
// Should always work with objects implementing TextMarshaler interface
rw6 := httptest.NewRecorder()
err6 := prod.Produce(rw6, &textMarshalDummy{answer})
require.NoError(t, err6)
assert.Equal(t, answer, rw6.Body.String())
rw10 := httptest.NewRecorder()
err10 := prod.Produce(rw10, errors.New(answer))
require.NoError(t, err10)
assert.Equal(t, answer, rw10.Body.String())
rw11 := httptest.NewRecorder()
err11 := prod.Produce(rw11, Error{Message: answer})
require.NoError(t, err11)
assert.Equal(t, fmt.Sprintf(`{"message":%q}`, answer), rw11.Body.String())
rw12 := httptest.NewRecorder()
err12 := prod.Produce(rw12, &Error{Message: answer})
require.NoError(t, err12)
assert.Equal(t, fmt.Sprintf(`{"message":%q}`, answer), rw12.Body.String())
rw13 := httptest.NewRecorder()
err13 := prod.Produce(rw13, []string{answer})
require.NoError(t, err13)
assert.Equal(t, fmt.Sprintf(`[%q]`, answer), rw13.Body.String())
// should not work with anything that's not (indirectly) a string
rw7 := httptest.NewRecorder()
err7 := prod.Produce(rw7, 42)
require.Error(t, err7)
// nil values should also be safely caught with an error
rw8 := httptest.NewRecorder()
err8 := prod.Produce(rw8, nil)
require.Error(t, err8)
// writer can not be nil
require.Error(t, prod.Produce(nil, &textMarshalDummy{answer}))
// should not work for a textMarshaler that returns an error during marshalling
rw9 := httptest.NewRecorder()
err9 := prod.Produce(rw9, new(textMarshalDummy))
require.Error(t, err9)
}
type Error struct {
Message string `json:"message"`
}
type stringerDummy struct {
str string
}
func (t *stringerDummy) String() string {
return t.str
}
type textMarshalDummy struct {
str string
}
func (t *textMarshalDummy) MarshalText() ([]byte, error) {
if t.str == "" {
return nil, errors.New("no text set")
}
return []byte(t.str), nil
}
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