Add support to list custom roles for organizations

github/org_custom_roles.go

@@ -0,0 +1,38 @@
+package github
+
+import (
+	"context"
+	"fmt"
+)
+
+// OrginizationCustomRoles represents custom repository roles available in specified organization
+type OrginizationCustomRoles struct {
+	TotalCount  *int           `json:"total_count,omitempty"`
+	CustomRoles []*CustomRoles `json:"custom_roles,omitempty"`
+}
+
+// CustomRoles represents information of custom roles
+type CustomRoles struct {
+	ID   *int64  `json:"id,omitempty"`
+	Name *string `json:"name,omitempty"`
+}
+
+// List Custome Roles in Org
+//
+// GitHub API docs: https://docs.github.com/en/rest/reference/orgs#custom-repository-roles
+func (s *OrganizationsService) ListCustomRoles(ctx context.Context, organization_id string) (*OrginizationCustomRoles, *Response, error) {
+	u := fmt.Sprintf("organizations/%v/custom_roles", organization_id)
+
+	req, err := s.client.NewRequest("GET", u, nil)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	custom_roles := new(OrginizationCustomRoles)
+	resp, err := s.client.Do(ctx, req, custom_roles)
+	if err != nil {
+		return nil, resp, err
+	}
+
+	return custom_roles, resp, nil
+}

github/org_custom_roles_test.go

@@ -0,0 +1,45 @@
+package github
+
+import (
+	"context"
+	"fmt"
+	"net/http"
+	"testing"
+
+	"github.com/google/go-cmp/cmp"
+)
+
+func TestOrganizationsService_ListCustomRoles(t *testing.T) {
+	client, mux, _, teardown := setup()
+	defer teardown()
+
+	mux.HandleFunc("/organizations/o/custom_roles", func(w http.ResponseWriter, r *http.Request) {
+		testMethod(t, r, "GET")
+		fmt.Fprint(w, `{"total_count": 1, "custom_roles": [{ "id": 1, "name": "Developer"}]}`)
+	})
+
+	ctx := context.Background()
+	apps, _, err := client.Organizations.ListCustomRoles(ctx, "o")
+	if err != nil {
+		t.Errorf("Organizations.ListCustomRoles returned error: %v", err)
+	}
+
+	want := &OrginizationCustomRoles{TotalCount: Int(1), CustomRoles: []*CustomRoles{{ID: Int64(1), Name: String("Developer")}}}
+	if !cmp.Equal(apps, want) {
+		t.Errorf("Organizations.ListCustomRoles returned %+v, want %+v", apps, want)
+	}
+
+	const methodName = "ListCustomRoles"
+	testBadOptions(t, methodName, func() (err error) {
+		_, _, err = client.Organizations.ListCustomRoles(ctx, "\no")
+		return err
+	})
+
+	testNewRequestAndDoFailure(t, methodName, client, func() (*Response, error) {
+		got, resp, err := client.Organizations.ListCustomRoles(ctx, "o")
+		if got != nil {
+			t.Errorf("testNewRequestAndDoFailure %v = %#v, want nil", methodName, got)
+		}
+		return resp, err
+	})
+}