Added basic version of Group API (Thanks to @aviz)

group.go

@@ -0,0 +1,53 @@
+package jira
+
+import (
+	"fmt"
+)
+
+// GroupService handles Groups for the JIRA instance / API.
+//
+// JIRA API docs: https://docs.atlassian.com/jira/REST/server/#api/2/group
+type GroupService struct {
+	client *Client
+}
+
+// groupMembersResult is only a small wrapper around the Group* methods
+// to be able to parse the results
+type groupMembersResult struct {
+	StartAt    int           `json:"startAt"`
+	MaxResults int           `json:"maxResults"`
+	Total      int           `json:"total"`
+	Members    []GroupMember `json:"values"`
+}
+
+// GroupMember reflects a single member of a group
+type GroupMember struct {
+	Self         string `json:"self,omitempty"`
+	Name         string `json:"name,omitempty"`
+	Key          string `json:"key,omitempty"`
+	EmailAddress string `json:"emailAddress,omitempty"`
+	DisplayName  string `json:"displayName,omitempty"`
+	Active       bool   `json:"active,omitempty"`
+	TimeZone     string `json:"timeZone,omitempty"`
+}
+
+// Get returns a paginated list of users who are members of the specified group and its subgroups.
+// Users in the page are ordered by user names.
+// User of this resource is required to have sysadmin or admin permissions.
+//
+// JIRA API docs: https://docs.atlassian.com/jira/REST/server/#api/2/group-getUsersFromGroup
+func (s *GroupService) Get(name string) ([]GroupMember, *Response, error) {
+	apiEndpoint := fmt.Sprintf("rest/api/2/group/member?groupname=%s", name)
+	req, err := s.client.NewRequest("GET", apiEndpoint, nil)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	group := new(groupMembersResult)
+	resp, err := s.client.Do(req, group)
+	if err != nil {
+		return nil, resp, err
+	}
+
+	return group.Members, resp, nil
+}

issue.go

@@ -438,7 +438,7 @@ type SearchOptions struct {
 	Expand string `url:expand,omitempty"`
 }
 
-// searchResult is only a small wrapper arround the Search (with JQL) method
+// searchResult is only a small wrapper around the Search (with JQL) method
 // to be able to parse the results
 type searchResult struct {
 	Issues     []Issue `json:"issues" structs:"issues"`

jira.go

@@ -30,6 +30,7 @@ type Client struct {
 	Board          *BoardService
 	Sprint         *SprintService
 	User           *UserService
+	Group          *GroupService
 }
 
 // NewClient returns a new JIRA API client.
@@ -59,6 +60,7 @@ func NewClient(httpClient *http.Client, baseURL string) (*Client, error) {
 	c.Board = &BoardService{client: c}
 	c.Sprint = &SprintService{client: c}
 	c.User = &UserService{client: c}
+	c.Group = &GroupService{client: c}
 
 	return c, nil
 }

jira_test.go

@@ -106,6 +106,12 @@ func TestNewClient_WithServices(t *testing.T) {
 	if c.Sprint == nil {
 		t.Error("No SprintService provided")
 	}
+	if c.User == nil {
+		t.Error("No UserService provided")
+	}
+	if c.Group == nil {
+		t.Error("No GroupService provided")
+	}
 }
 
 func TestCheckResponse(t *testing.T) {