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250 lines
6.6 KiB
250 lines
6.6 KiB
package common_test
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import (
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"bytes"
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"encoding/json"
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"errors"
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"io"
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"io/ioutil"
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"net/http"
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"net/http/httptest"
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"reflect"
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"strings"
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"sync"
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"testing"
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"github.com/stretchr/testify/assert"
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"github.com/stretchr/testify/require"
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"github.com/tendermint/tmlibs/common"
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)
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func TestWriteSuccess(t *testing.T) {
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w := httptest.NewRecorder()
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common.WriteSuccess(w, "foo")
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assert.Equal(t, w.Code, 200, "should get a 200")
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}
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var blankErrResponse = new(common.ErrorResponse)
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func TestWriteError(t *testing.T) {
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tests := [...]struct {
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msg string
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code int
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}{
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0: {
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msg: "this is a message",
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code: 419,
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},
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}
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for i, tt := range tests {
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w := httptest.NewRecorder()
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msg := tt.msg
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// First check without a defined code, should send back a 400
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common.WriteError(w, errors.New(msg))
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assert.Equal(t, w.Code, http.StatusBadRequest, "#%d: should get a 400", i)
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blob, err := ioutil.ReadAll(w.Body)
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if err != nil {
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assert.Failf(t, "expecting a successful ioutil.ReadAll", "#%d", i)
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continue
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}
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recv := new(common.ErrorResponse)
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if err := json.Unmarshal(blob, recv); err != nil {
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assert.Failf(t, "expecting a successful json.Unmarshal", "#%d", i)
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continue
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}
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assert.Equal(t, reflect.DeepEqual(recv, blankErrResponse), false, "expecting a non-blank error response")
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// Now test with an error that's .HTTPCode() int conforming
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// Reset w
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w = httptest.NewRecorder()
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common.WriteError(w, common.ErrorWithCode(errors.New("foo"), tt.code))
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assert.Equal(t, w.Code, tt.code, "case #%d", i)
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}
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}
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type marshalFailer struct{}
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var errFooFailed = errors.New("foo failed here")
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func (mf *marshalFailer) MarshalJSON() ([]byte, error) {
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return nil, errFooFailed
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}
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func TestWriteCode(t *testing.T) {
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codes := [...]int{
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0: http.StatusOK,
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1: http.StatusBadRequest,
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2: http.StatusUnauthorized,
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3: http.StatusInternalServerError,
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}
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for i, code := range codes {
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w := httptest.NewRecorder()
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common.WriteCode(w, "foo", code)
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assert.Equal(t, w.Code, code, "#%d", i)
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// Then for the failed JSON marshaling
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w = httptest.NewRecorder()
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common.WriteCode(w, &marshalFailer{}, code)
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wantCode := http.StatusBadRequest
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assert.Equal(t, w.Code, wantCode, "#%d", i)
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assert.True(t, strings.Contains(string(w.Body.Bytes()), errFooFailed.Error()),
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"#%d: expected %q in the error message", i, errFooFailed)
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}
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}
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type saver struct {
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Foo int `json:"foo" validate:"min=10"`
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Bar string `json:"bar"`
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}
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type rcloser struct {
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closeOnce sync.Once
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body *bytes.Buffer
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closeChan chan bool
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}
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var errAlreadyClosed = errors.New("already closed")
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func (rc *rcloser) Close() error {
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var err = errAlreadyClosed
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rc.closeOnce.Do(func() {
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err = nil
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rc.closeChan <- true
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close(rc.closeChan)
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})
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return err
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}
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func (rc *rcloser) Read(b []byte) (int, error) {
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return rc.body.Read(b)
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}
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var _ io.ReadCloser = (*rcloser)(nil)
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func makeReq(strBody string) (*http.Request, <-chan bool) {
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closeChan := make(chan bool, 1)
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buf := new(bytes.Buffer)
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buf.Write([]byte(strBody))
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req := &http.Request{
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Header: make(http.Header),
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Body: &rcloser{body: buf, closeChan: closeChan},
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}
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return req, closeChan
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}
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func TestParseRequestJSON(t *testing.T) {
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tests := [...]struct {
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body string
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wantErr bool
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useNil bool
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}{
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0: {wantErr: true, body: ``},
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1: {body: `{}`},
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2: {body: `{"foo": 2}`}, // Not that the validate tags don't matter here since we are just parsing
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3: {body: `{"foo": "abcd"}`, wantErr: true},
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4: {useNil: true, wantErr: true},
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}
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for i, tt := range tests {
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req, closeChan := makeReq(tt.body)
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if tt.useNil {
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req.Body = nil
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}
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sav := new(saver)
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err := common.ParseRequestJSON(req, sav)
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if tt.wantErr {
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assert.NotEqual(t, err, nil, "#%d: want non-nil error", i)
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continue
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}
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assert.Equal(t, err, nil, "#%d: want nil error", i)
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wasClosed := <-closeChan
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assert.Equal(t, wasClosed, true, "#%d: should have invoked close", i)
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}
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}
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func TestFparseJSON(t *testing.T) {
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r1 := strings.NewReader(`{"foo": 1}`)
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sav := new(saver)
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require.Equal(t, common.FparseJSON(r1, sav), nil, "expecting successful parsing")
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r2 := strings.NewReader(`{"bar": "blockchain"}`)
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require.Equal(t, common.FparseJSON(r2, sav), nil, "expecting successful parsing")
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require.Equal(t, reflect.DeepEqual(sav, &saver{Foo: 1, Bar: "blockchain"}), true, "should have parsed both")
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// Now with a nil body
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require.NotEqual(t, nil, common.FparseJSON(nil, sav), "expecting a nil error report")
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}
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func TestFparseAndValidateJSON(t *testing.T) {
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r1 := strings.NewReader(`{"foo": 1}`)
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sav := new(saver)
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require.NotEqual(t, common.FparseAndValidateJSON(r1, sav), nil, "expecting validation to fail")
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r1 = strings.NewReader(`{"foo": 100}`)
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require.Equal(t, common.FparseJSON(r1, sav), nil, "expecting successful parsing")
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r2 := strings.NewReader(`{"bar": "blockchain"}`)
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require.Equal(t, common.FparseAndValidateJSON(r2, sav), nil, "expecting successful parsing")
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require.Equal(t, reflect.DeepEqual(sav, &saver{Foo: 100, Bar: "blockchain"}), true, "should have parsed both")
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// Now with a nil body
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require.NotEqual(t, nil, common.FparseJSON(nil, sav), "expecting a nil error report")
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}
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var blankSaver = new(saver)
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func TestParseAndValidateRequestJSON(t *testing.T) {
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tests := [...]struct {
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body string
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wantErr bool
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useNil bool
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}{
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0: {wantErr: true, body: ``},
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1: {body: `{}`, wantErr: true}, // Here it should fail since Foo doesn't meet the minimum value
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2: {body: `{"foo": 2}`, wantErr: true}, // Here validation should fail
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3: {body: `{"foo": "abcd"}`, wantErr: true},
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4: {useNil: true, wantErr: true},
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5: {body: `{"foo": 100}`}, // Must succeed
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}
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for i, tt := range tests {
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req, closeChan := makeReq(tt.body)
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if tt.useNil {
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req.Body = nil
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}
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sav := new(saver)
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err := common.ParseRequestAndValidateJSON(req, sav)
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if tt.wantErr {
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assert.NotEqual(t, err, nil, "#%d: want non-nil error", i)
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continue
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}
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assert.Equal(t, err, nil, "#%d: want nil error", i)
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assert.False(t, reflect.DeepEqual(blankSaver, sav), "#%d: expecting a set saver", i)
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wasClosed := <-closeChan
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assert.Equal(t, wasClosed, true, "#%d: should have invoked close", i)
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}
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}
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func TestErrorWithCode(t *testing.T) {
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tests := [...]struct {
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code int
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err error
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}{
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0: {code: 500, err: errors.New("funky")},
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1: {code: 406, err: errors.New("purist")},
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}
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for i, tt := range tests {
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errRes := common.ErrorWithCode(tt.err, tt.code)
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assert.Equal(t, errRes.Error(), tt.err.Error(), "#%d: expecting the error values to be equal", i)
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assert.Equal(t, errRes.Code, tt.code, "expecting the same status code", i)
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assert.Equal(t, errRes.HTTPCode(), tt.code, "expecting the same status code", i)
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}
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}
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