Test gh pr create --reviewer tab completion

pkg/cmd/pr/create/create_test.go

@@ -2879,3 +2879,136 @@ func TestProjectsV1Deprecation(t *testing.T) {
 		})
 	})
 }
+
+func Test_requestableReviewersForCompletion(t *testing.T) {
+	tests := []struct {
+		name              string
+		tty               bool
+		expectedReviewers []string
+		httpStubs         func(*httpmock.Registry, *testing.T)
+	}{
+		{
+			name:              "when users and teams are both available, both are listed",
+			expectedReviewers: []string{"MonaLisa\tMona Display Name", "OWNER/core", "OWNER/robots", "hubot"},
+			httpStubs: func(reg *httpmock.Registry, t *testing.T) {
+				reg.Register(
+					httpmock.GraphQL(`query UserCurrent\b`),
+					httpmock.StringResponse(`{"data": {"viewer": {"login": "OWNER"} } }`))
+				reg.Register(
+					httpmock.GraphQL(`query RepositoryAssignableUsers\b`),
+					httpmock.StringResponse(`
+						{ "data": { "repository": { "assignableUsers": {
+							"nodes": [
+								{ "login": "hubot", "id": "HUBOTID", "name": "" },
+								{ "login": "MonaLisa", "id": "MONAID", "name": "Mona Display Name" }
+							],
+							"pageInfo": { "hasNextPage": false }
+						} } } }
+					`))
+				reg.Register(
+					httpmock.GraphQL(`query OrganizationTeamList\b`),
+					httpmock.StringResponse(`
+						{ "data": { "organization": { "teams": {
+							"nodes": [
+								{ "slug": "core", "id": "COREID" },
+								{ "slug": "robots", "id": "ROBOTID" }
+							],
+							"pageInfo": { "hasNextPage": false }
+						} } } }
+					`))
+			},
+		},
+		{
+			name:              "when users are available but teams aren't, users are listed",
+			expectedReviewers: []string{"MonaLisa\tMona Display Name", "hubot"},
+			httpStubs: func(reg *httpmock.Registry, t *testing.T) {
+				reg.Register(
+					httpmock.GraphQL(`query UserCurrent\b`),
+					httpmock.StringResponse(`{"data": {"viewer": {"login": "OWNER"} } }`))
+				reg.Register(
+					httpmock.GraphQL(`query RepositoryAssignableUsers\b`),
+					httpmock.StringResponse(`
+						{ "data": { "repository": { "assignableUsers": {
+							"nodes": [
+								{ "login": "hubot", "id": "HUBOTID", "name": "" },
+								{ "login": "MonaLisa", "id": "MONAID", "name": "Mona Display Name" }
+							],
+							"pageInfo": { "hasNextPage": false }
+						} } } }
+					`))
+				reg.Register(
+					httpmock.GraphQL(`query OrganizationTeamList\b`),
+					httpmock.StringResponse(`
+						{ "data": { "organization": { "teams": {
+							"nodes": [],
+							"pageInfo": { "hasNextPage": false }
+						} } } }
+					`))
+			},
+		},
+		{
+			name:              "when teams are available but users aren't, teams are listed",
+			expectedReviewers: []string{"OWNER/core", "OWNER/robots"},
+			httpStubs: func(reg *httpmock.Registry, t *testing.T) {
+				reg.Register(
+					httpmock.GraphQL(`query UserCurrent\b`),
+					httpmock.StringResponse(`{"data": {"viewer": {"login": "OWNER"} } }`))
+				reg.Register(
+					httpmock.GraphQL(`query RepositoryAssignableUsers\b`),
+					httpmock.StringResponse(`
+						{ "data": { "repository": { "assignableUsers": {
+							"nodes": [],
+							"pageInfo": { "hasNextPage": false }
+						} } } }
+					`))
+				reg.Register(
+					httpmock.GraphQL(`query OrganizationTeamList\b`),
+					httpmock.StringResponse(`
+						{ "data": { "organization": { "teams": {
+							"nodes": [
+								{ "slug": "core", "id": "COREID" },
+								{ "slug": "robots", "id": "ROBOTID" }
+							],
+							"pageInfo": { "hasNextPage": false }
+						} } } }
+					`))
+			},
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			reg := &httpmock.Registry{}
+			defer reg.Verify(t)
+			if tt.httpStubs != nil {
+				tt.httpStubs(reg, t)
+			}
+
+			ios, _, _, _ := iostreams.Test()
+			ios.SetStdoutTTY(tt.tty)
+			ios.SetStdinTTY(tt.tty)
+			ios.SetStderrTTY(tt.tty)
+
+			opts := &CreateOptions{}
+			opts.IO = ios
+			opts.HttpClient = func() (*http.Client, error) {
+				return &http.Client{Transport: reg}, nil
+			}
+			opts.Remotes = func() (context.Remotes, error) {
+				return context.Remotes{
+					{
+						Remote: &git.Remote{
+							Name:     "origin",
+							Resolved: "base",
+						},
+						Repo: ghrepo.New("OWNER", "REPO"),
+					},
+				}, nil
+			}
+
+			reviewers, err := requestableReviewersForCompletion(opts)
+			require.NoError(t, err)
+			require.Equal(t, tt.expectedReviewers, reviewers)
+		})
+	}
+}