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// Copyright 2019-present Facebook Inc. All rights reserved.
// This source code is licensed under the Apache 2.0 license found
// in the LICENSE file in the root directory of this source tree.
package gremlin
import (
"context"
"io"
"io/ioutil"
"net/http"
"net/http/httptest"
"testing"
"github.com/facebook/ent/dialect/gremlin/encoding/graphson"
jsoniter "github.com/json-iterator/go"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
)
func TestHTTPTransportRoundTripper(t *testing.T) {
srv := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
assert.Equal(t, r.Header.Get("Content-Type"), "application/json")
got, err := ioutil.ReadAll(r.Body)
require.NoError(t, err)
assert.JSONEq(t, `{"gremlin": "g.V(1)", "language": "gremlin-groovy"}`, string(got))
_, err = io.WriteString(w, `{
"requestId": "f679127f-8701-425c-af55-049a44720db6",
"result": {
"data": {
"@type": "g:List",
"@value": [
{
"@type": "g:Vertex",
"@value": {
"id": {
"@type": "g:Int64",
"@value": 1
},
"label": "person"
}
}
]
},
"meta": {
"@type": "g:Map",
"@value": []
}
},
"status": {
"attributes": {
"@type": "g:Map",
"@value": []
},
"code": 200,
"message": ""
}
}`)
require.NoError(t, err)
}))
defer srv.Close()
transport, err := NewHTTPTransport(srv.URL, nil)
require.NoError(t, err)
rsp, err := transport.RoundTrip(context.Background(), NewEvalRequest("g.V(1)"))
require.NoError(t, err)
assert.Equal(t, "f679127f-8701-425c-af55-049a44720db6", rsp.RequestID)
assert.Equal(t, 200, rsp.Status.Code)
assert.Empty(t, rsp.Status.Message)
v := jsoniter.Get(rsp.Result.Data, graphson.ValueKey, 0, graphson.ValueKey)
require.NoError(t, v.LastError())
assert.Equal(t, 1, v.Get("id", graphson.ValueKey).ToInt())
assert.Equal(t, "person", v.Get("label").ToString())
}
func TestNewHTTPTransportBadURL(t *testing.T) {
transport, err := NewHTTPTransport(":", nil)
assert.Nil(t, transport)
assert.Error(t, err)
}
func TestHTTPTransportBadRequest(t *testing.T) {
transport, err := NewHTTPTransport("example.com", nil)
require.NoError(t, err)
req := NewEvalRequest("g.V()")
req.Operation = ""
rsp, err := transport.RoundTrip(context.Background(), req)
assert.EqualError(t, err, `gremlin/http: unsupported operation: ""`)
assert.Nil(t, rsp)
req = NewEvalRequest("g.V()")
delete(req.Arguments, ArgsGremlin)
rsp, err = transport.RoundTrip(context.Background(), req)
assert.EqualError(t, err, "gremlin/http: missing query expression")
assert.Nil(t, rsp)
}
func TestHTTPTransportBadResponseStatus(t *testing.T) {
srv := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, _ *http.Request) {
w.WriteHeader(http.StatusInternalServerError)
}))
defer srv.Close()
transport, err := NewHTTPTransport(srv.URL, nil)
require.NoError(t, err)
_, err = transport.RoundTrip(context.Background(), NewEvalRequest("g.E()."))
require.Error(t, err)
assert.Contains(t, err.Error(), http.StatusText(http.StatusInternalServerError))
}
func TestHTTPTransportBadResponseBody(t *testing.T) {
srv := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, _ *http.Request) {
_, err := io.WriteString(w, "{{{")
require.NoError(t, err)
}))
defer srv.Close()
transport, err := NewHTTPTransport(srv.URL, nil)
require.NoError(t, err)
_, err = transport.RoundTrip(context.Background(), NewEvalRequest("g.E()."))
require.Error(t, err)
assert.Contains(t, err.Error(), "decoding response")
}
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