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json_test.go
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json_test.go
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package echo
import (
"github.com/stretchr/testify/assert"
"net/http"
"net/http/httptest"
"strings"
"testing"
)
// Note this test is deliberately simple as there's not a lot to test.
// Just need to ensure it writes JSONs. The heavy work is done by the context methods.
func TestDefaultJSONCodec_Encode(t *testing.T) {
e := New()
req := httptest.NewRequest(http.MethodPost, "/", nil)
rec := httptest.NewRecorder()
c := e.NewContext(req, rec).(*context)
// Echo
assert.Equal(t, e, c.Echo())
// Request
assert.NotNil(t, c.Request())
// Response
assert.NotNil(t, c.Response())
//--------
// Default JSON encoder
//--------
enc := new(DefaultJSONSerializer)
err := enc.Serialize(c, user{1, "Jon Snow"}, "")
if assert.NoError(t, err) {
assert.Equal(t, userJSON+"\n", rec.Body.String())
}
req = httptest.NewRequest(http.MethodPost, "/", nil)
rec = httptest.NewRecorder()
c = e.NewContext(req, rec).(*context)
err = enc.Serialize(c, user{1, "Jon Snow"}, " ")
if assert.NoError(t, err) {
assert.Equal(t, userJSONPretty+"\n", rec.Body.String())
}
}
// Note this test is deliberately simple as there's not a lot to test.
// Just need to ensure it writes JSONs. The heavy work is done by the context methods.
func TestDefaultJSONCodec_Decode(t *testing.T) {
e := New()
req := httptest.NewRequest(http.MethodPost, "/", strings.NewReader(userJSON))
rec := httptest.NewRecorder()
c := e.NewContext(req, rec).(*context)
// Echo
assert.Equal(t, e, c.Echo())
// Request
assert.NotNil(t, c.Request())
// Response
assert.NotNil(t, c.Response())
//--------
// Default JSON encoder
//--------
enc := new(DefaultJSONSerializer)
var u = user{}
err := enc.Deserialize(c, &u)
if assert.NoError(t, err) {
assert.Equal(t, u, user{ID: 1, Name: "Jon Snow"})
}
var userUnmarshalSyntaxError = user{}
req = httptest.NewRequest(http.MethodPost, "/", strings.NewReader(invalidContent))
rec = httptest.NewRecorder()
c = e.NewContext(req, rec).(*context)
err = enc.Deserialize(c, &userUnmarshalSyntaxError)
assert.IsType(t, &HTTPError{}, err)
assert.EqualError(t, err, "code=400, message=Syntax error: offset=1, error=invalid character 'i' looking for beginning of value, internal=invalid character 'i' looking for beginning of value")
var userUnmarshalTypeError = struct {
ID string `json:"id"`
Name string `json:"name"`
}{}
req = httptest.NewRequest(http.MethodPost, "/", strings.NewReader(userJSON))
rec = httptest.NewRecorder()
c = e.NewContext(req, rec).(*context)
err = enc.Deserialize(c, &userUnmarshalTypeError)
assert.IsType(t, &HTTPError{}, err)
assert.EqualError(t, err, "code=400, message=Unmarshal type error: expected=string, got=number, field=id, offset=7, internal=json: cannot unmarshal number into Go struct field .id of type string")
}