fix: github enterprise graphql endpoint url

Exposes Client.GraphQLURL to enable testing.

fixes #31

scm/client.go

@@ -89,7 +89,8 @@ type (
  Client *http.Client
 
  // Base URL for API requests.
- BaseURL *url.URL
+ BaseURL *url.URL
+ GraphQLURL *url.URL
 
  // Services used for communicating with the API.
  Driver Driver

scm/driver/github/github.go

@@ -49,6 +49,13 @@ func New(uri string) (*scm.Client, error) {
  client.Webhooks = &webhookService{client}
 
  graphqlEndpoint := scm.UrlJoin(uri, "/graphql")
+ if strings.HasSuffix(uri, "/api/v3") {
+ graphqlEndpoint = scm.UrlJoin(uri[0:len(uri)-2], "graphql")
+ }
+ client.GraphQLURL, err = url.Parse(graphqlEndpoint)
+ if err != nil {
+ return nil, err
+ }
  client.GraphQL = &dynamicGraphQLClient{client, graphqlEndpoint}
 
  return client.Client, nil

scm/driver/github/github_test.go

@@ -34,6 +34,16 @@ func TestClient(t *testing.T) {
  }
 }
 
+func TestGraphQLClient(t *testing.T) {
+ client, err := New("https://api.github.com")
+ if err != nil {
+ t.Error(err)
+ }
+ if got, want := client.GraphQLURL.String(), "https://api.github.com/graphql"; got != want {
+ t.Errorf("Want GraphQl Client URL %q, got %q", want, got)
+ }
+}
+
 func TestClient_Base(t *testing.T) {
  client, err := New("https://github.example.com/api/v3")
  if err != nil {
@@ -44,6 +54,16 @@ func TestClient_Base(t *testing.T) {
  }
 }
 
+func TestEnterpriseGraphQLClient(t *testing.T) {
+ client, err := New("https://github.example.com/api/v3")
+ if err != nil {
+ t.Error(err)
+ }
+ if got, want := client.GraphQLURL.String(), "https://github.example.com/api/graphql"; got != want {
+ t.Errorf("Want GraphQl Client URL %q, got %q", want, got)
+ }
+}
+
 func TestClient_Default(t *testing.T) {
  client := NewDefault()
  if got, want := client.BaseURL.String(), "https://api.github.com/"; got != want {