diff --git a/confluence/internal/authentication_impl_test.go b/confluence/internal/authentication_impl_test.go
new file mode 100644
index 00000000..ac34e654
--- /dev/null
+++ b/confluence/internal/authentication_impl_test.go
@@ -0,0 +1,333 @@
+package internal
+
+import (
+	"github.com/ctreminiom/go-atlassian/service"
+	"github.com/ctreminiom/go-atlassian/service/common"
+	"github.com/ctreminiom/go-atlassian/service/mocks"
+	"reflect"
+	"testing"
+)
+
+func TestAuthenticationService_GetBasicAuth(t *testing.T) {
+
+	type fields struct {
+		c                 service.Client
+		basicAuthProvided bool
+		mail              string
+		token             string
+		userAgentProvided bool
+		agent             string
+	}
+	testCases := []struct {
+		name   string
+		fields fields
+		want   string
+		want1  string
+	}{
+		{
+			name: "when the basic auth is already set",
+			fields: fields{
+				c:     mocks.NewClient(t),
+				mail:  "mail",
+				token: "token",
+			},
+			want:  "mail",
+			want1: "token",
+		},
+	}
+	for _, testCase := range testCases {
+		t.Run(testCase.name, func(t *testing.T) {
+
+			a := &AuthenticationService{
+				c:                 testCase.fields.c,
+				basicAuthProvided: testCase.fields.basicAuthProvided,
+				mail:              testCase.fields.mail,
+				token:             testCase.fields.token,
+				userAgentProvided: testCase.fields.userAgentProvided,
+				agent:             testCase.fields.agent,
+			}
+
+			got, got1 := a.GetBasicAuth()
+			if got != testCase.want {
+				t.Errorf("GetBasicAuth() got = %v, want %v", got, testCase.want)
+			}
+
+			if got1 != testCase.want1 {
+				t.Errorf("GetBasicAuth() got1 = %v, want %v", got1, testCase.want1)
+			}
+		})
+	}
+}
+
+func TestAuthenticationService_GetUserAgent(t *testing.T) {
+	type fields struct {
+		c                 service.Client
+		basicAuthProvided bool
+		mail              string
+		token             string
+		userAgentProvided bool
+		agent             string
+	}
+	testCases := []struct {
+		name   string
+		fields fields
+		want   string
+	}{
+		{
+			name: "when the user agent is already set",
+			fields: fields{
+				c:     mocks.NewClient(t),
+				agent: "firefox-09",
+			},
+			want: "firefox-09",
+		},
+	}
+	for _, testCase := range testCases {
+		t.Run(testCase.name, func(t *testing.T) {
+			a := &AuthenticationService{
+				c:                 testCase.fields.c,
+				basicAuthProvided: testCase.fields.basicAuthProvided,
+				mail:              testCase.fields.mail,
+				token:             testCase.fields.token,
+				userAgentProvided: testCase.fields.userAgentProvided,
+				agent:             testCase.fields.agent,
+			}
+			if got := a.GetUserAgent(); got != testCase.want {
+				t.Errorf("GetUserAgent() = %v, want %v", got, testCase.want)
+			}
+		})
+	}
+}
+
+func TestAuthenticationService_HasBasicAuth(t *testing.T) {
+	type fields struct {
+		c                 service.Client
+		basicAuthProvided bool
+		mail              string
+		token             string
+		userAgentProvided bool
+		agent             string
+	}
+	testCases := []struct {
+		name   string
+		fields fields
+		want   bool
+	}{
+		{
+			name: "when the params are correct",
+			fields: fields{
+				c:                 mocks.NewClient(t),
+				basicAuthProvided: true,
+			},
+			want: true,
+		},
+	}
+	for _, testCase := range testCases {
+
+		t.Run(testCase.name, func(t *testing.T) {
+			a := &AuthenticationService{
+				c:                 testCase.fields.c,
+				basicAuthProvided: testCase.fields.basicAuthProvided,
+				mail:              testCase.fields.mail,
+				token:             testCase.fields.token,
+				userAgentProvided: testCase.fields.userAgentProvided,
+				agent:             testCase.fields.agent,
+			}
+			if got := a.HasBasicAuth(); got != testCase.want {
+				t.Errorf("HasBasicAuth() = %v, want %v", got, testCase.want)
+			}
+		})
+	}
+}
+
+func TestAuthenticationService_HasUserAgent(t *testing.T) {
+	type fields struct {
+		c                 service.Client
+		basicAuthProvided bool
+		mail              string
+		token             string
+		userAgentProvided bool
+		agent             string
+	}
+	testCases := []struct {
+		name   string
+		fields fields
+		want   bool
+	}{
+		{
+			name: "when the parameters are correct",
+			fields: fields{
+				userAgentProvided: true,
+			},
+			want: true,
+		},
+	}
+	for _, testCase := range testCases {
+
+		t.Run(testCase.name, func(t *testing.T) {
+			a := &AuthenticationService{
+				c:                 testCase.fields.c,
+				basicAuthProvided: testCase.fields.basicAuthProvided,
+				mail:              testCase.fields.mail,
+				token:             testCase.fields.token,
+				userAgentProvided: testCase.fields.userAgentProvided,
+				agent:             testCase.fields.agent,
+			}
+
+			if got := a.HasUserAgent(); got != testCase.want {
+				t.Errorf("HasUserAgent() = %v, want %v", got, testCase.want)
+			}
+		})
+	}
+}
+
+func TestNewAuthenticationService(t *testing.T) {
+
+	clientMocked := mocks.NewClient(t)
+
+	type args struct {
+		client service.Client
+	}
+	testCases := []struct {
+		name string
+		args args
+		want common.Authentication
+	}{
+		{
+			name: "when the parameters are correct",
+			args: args{
+				client: clientMocked,
+			},
+			want: NewAuthenticationService(clientMocked),
+		},
+	}
+	for _, testCase := range testCases {
+		t.Run(testCase.name, func(t *testing.T) {
+			if got := NewAuthenticationService(testCase.args.client); !reflect.DeepEqual(got, testCase.want) {
+				t.Errorf("NewAuthenticationService() = %v, want %v", got, testCase.want)
+			}
+		})
+	}
+}
+
+func TestAuthenticationService_SetUserAgent(t *testing.T) {
+
+	type fields struct {
+		c                 service.Client
+		basicAuthProvided bool
+		mail              string
+		token             string
+		userAgentProvided bool
+		agent             string
+	}
+	type args struct {
+		agent string
+	}
+	testCases := []struct {
+		name   string
+		fields fields
+		args   args
+	}{
+		{
+			name: "when the parameters are correct",
+			args: args{agent: "mozilla-9"},
+		},
+	}
+	for _, testCase := range testCases {
+		t.Run(testCase.name, func(t *testing.T) {
+
+			a := &AuthenticationService{
+				c:                 testCase.fields.c,
+				basicAuthProvided: testCase.fields.basicAuthProvided,
+				mail:              testCase.fields.mail,
+				token:             testCase.fields.token,
+				userAgentProvided: testCase.fields.userAgentProvided,
+				agent:             testCase.fields.agent,
+			}
+
+			a.SetUserAgent(testCase.args.agent)
+		})
+	}
+}
+
+func TestAuthenticationService_SetBasicAuth(t *testing.T) {
+
+	type fields struct {
+		c                 service.Client
+		basicAuthProvided bool
+		mail              string
+		token             string
+		userAgentProvided bool
+		agent             string
+	}
+	type args struct {
+		mail  string
+		token string
+	}
+	testCases := []struct {
+		name   string
+		fields fields
+		args   args
+	}{
+		{
+			name: "when the parameters are correct",
+			args: args{
+				mail:  "example@example.com",
+				token: "token-sample",
+			},
+		},
+	}
+	for _, testCase := range testCases {
+		t.Run(testCase.name, func(t *testing.T) {
+			a := &AuthenticationService{
+				c:                 testCase.fields.c,
+				basicAuthProvided: testCase.fields.basicAuthProvided,
+				mail:              testCase.fields.mail,
+				token:             testCase.fields.token,
+				userAgentProvided: testCase.fields.userAgentProvided,
+				agent:             testCase.fields.agent,
+			}
+
+			a.SetBasicAuth(testCase.args.mail, testCase.args.token)
+		})
+	}
+}
+
+func TestAuthenticationService_HasSetExperimentalFlag(t *testing.T) {
+
+	type fields struct {
+		c                 service.Client
+		basicAuthProvided bool
+		mail              string
+		token             string
+		userAgentProvided bool
+		agent             string
+	}
+	testCases := []struct {
+		name   string
+		fields fields
+		want   bool
+	}{
+
+		{
+			name:   "when the parameters are correct",
+			fields: fields{},
+			want:   false,
+		},
+	}
+	for _, testCase := range testCases {
+		t.Run(testCase.name, func(t *testing.T) {
+			a := &AuthenticationService{
+				c:                 testCase.fields.c,
+				basicAuthProvided: testCase.fields.basicAuthProvided,
+				mail:              testCase.fields.mail,
+				token:             testCase.fields.token,
+				userAgentProvided: testCase.fields.userAgentProvided,
+				agent:             testCase.fields.agent,
+			}
+			if got := a.HasSetExperimentalFlag(); got != testCase.want {
+				t.Errorf("HasSetExperimentalFlag() = %v, want %v", got, testCase.want)
+			}
+		})
+	}
+}
diff --git a/jira/agile/internal/authentication_impl_test.go b/jira/agile/internal/authentication_impl_test.go
index 78e074f9..ac34e654 100644
--- a/jira/agile/internal/authentication_impl_test.go
+++ b/jira/agile/internal/authentication_impl_test.go
@@ -209,3 +209,125 @@ func TestNewAuthenticationService(t *testing.T) {
 		})
 	}
 }
+
+func TestAuthenticationService_SetUserAgent(t *testing.T) {
+
+	type fields struct {
+		c                 service.Client
+		basicAuthProvided bool
+		mail              string
+		token             string
+		userAgentProvided bool
+		agent             string
+	}
+	type args struct {
+		agent string
+	}
+	testCases := []struct {
+		name   string
+		fields fields
+		args   args
+	}{
+		{
+			name: "when the parameters are correct",
+			args: args{agent: "mozilla-9"},
+		},
+	}
+	for _, testCase := range testCases {
+		t.Run(testCase.name, func(t *testing.T) {
+
+			a := &AuthenticationService{
+				c:                 testCase.fields.c,
+				basicAuthProvided: testCase.fields.basicAuthProvided,
+				mail:              testCase.fields.mail,
+				token:             testCase.fields.token,
+				userAgentProvided: testCase.fields.userAgentProvided,
+				agent:             testCase.fields.agent,
+			}
+
+			a.SetUserAgent(testCase.args.agent)
+		})
+	}
+}
+
+func TestAuthenticationService_SetBasicAuth(t *testing.T) {
+
+	type fields struct {
+		c                 service.Client
+		basicAuthProvided bool
+		mail              string
+		token             string
+		userAgentProvided bool
+		agent             string
+	}
+	type args struct {
+		mail  string
+		token string
+	}
+	testCases := []struct {
+		name   string
+		fields fields
+		args   args
+	}{
+		{
+			name: "when the parameters are correct",
+			args: args{
+				mail:  "example@example.com",
+				token: "token-sample",
+			},
+		},
+	}
+	for _, testCase := range testCases {
+		t.Run(testCase.name, func(t *testing.T) {
+			a := &AuthenticationService{
+				c:                 testCase.fields.c,
+				basicAuthProvided: testCase.fields.basicAuthProvided,
+				mail:              testCase.fields.mail,
+				token:             testCase.fields.token,
+				userAgentProvided: testCase.fields.userAgentProvided,
+				agent:             testCase.fields.agent,
+			}
+
+			a.SetBasicAuth(testCase.args.mail, testCase.args.token)
+		})
+	}
+}
+
+func TestAuthenticationService_HasSetExperimentalFlag(t *testing.T) {
+
+	type fields struct {
+		c                 service.Client
+		basicAuthProvided bool
+		mail              string
+		token             string
+		userAgentProvided bool
+		agent             string
+	}
+	testCases := []struct {
+		name   string
+		fields fields
+		want   bool
+	}{
+
+		{
+			name:   "when the parameters are correct",
+			fields: fields{},
+			want:   false,
+		},
+	}
+	for _, testCase := range testCases {
+		t.Run(testCase.name, func(t *testing.T) {
+			a := &AuthenticationService{
+				c:                 testCase.fields.c,
+				basicAuthProvided: testCase.fields.basicAuthProvided,
+				mail:              testCase.fields.mail,
+				token:             testCase.fields.token,
+				userAgentProvided: testCase.fields.userAgentProvided,
+				agent:             testCase.fields.agent,
+			}
+			if got := a.HasSetExperimentalFlag(); got != testCase.want {
+				t.Errorf("HasSetExperimentalFlag() = %v, want %v", got, testCase.want)
+			}
+		})
+	}
+}
diff --git a/jira/internal/authentication_impl_test.go b/jira/internal/authentication_impl_test.go
index 78e074f9..ac34e654 100644
--- a/jira/internal/authentication_impl_test.go
+++ b/jira/internal/authentication_impl_test.go
@@ -209,3 +209,125 @@ func TestNewAuthenticationService(t *testing.T) {
 		})
 	}
 }
+
+func TestAuthenticationService_SetUserAgent(t *testing.T) {
+
+	type fields struct {
+		c                 service.Client
+		basicAuthProvided bool
+		mail              string
+		token             string
+		userAgentProvided bool
+		agent             string
+	}
+	type args struct {
+		agent string
+	}
+	testCases := []struct {
+		name   string
+		fields fields
+		args   args
+	}{
+		{
+			name: "when the parameters are correct",
+			args: args{agent: "mozilla-9"},
+		},
+	}
+	for _, testCase := range testCases {
+		t.Run(testCase.name, func(t *testing.T) {
+
+			a := &AuthenticationService{
+				c:                 testCase.fields.c,
+				basicAuthProvided: testCase.fields.basicAuthProvided,
+				mail:              testCase.fields.mail,
+				token:             testCase.fields.token,
+				userAgentProvided: testCase.fields.userAgentProvided,
+				agent:             testCase.fields.agent,
+			}
+
+			a.SetUserAgent(testCase.args.agent)
+		})
+	}
+}
+
+func TestAuthenticationService_SetBasicAuth(t *testing.T) {
+
+	type fields struct {
+		c                 service.Client
+		basicAuthProvided bool
+		mail              string
+		token             string
+		userAgentProvided bool
+		agent             string
+	}
+	type args struct {
+		mail  string
+		token string
+	}
+	testCases := []struct {
+		name   string
+		fields fields
+		args   args
+	}{
+		{
+			name: "when the parameters are correct",
+			args: args{
+				mail:  "example@example.com",
+				token: "token-sample",
+			},
+		},
+	}
+	for _, testCase := range testCases {
+		t.Run(testCase.name, func(t *testing.T) {
+			a := &AuthenticationService{
+				c:                 testCase.fields.c,
+				basicAuthProvided: testCase.fields.basicAuthProvided,
+				mail:              testCase.fields.mail,
+				token:             testCase.fields.token,
+				userAgentProvided: testCase.fields.userAgentProvided,
+				agent:             testCase.fields.agent,
+			}
+
+			a.SetBasicAuth(testCase.args.mail, testCase.args.token)
+		})
+	}
+}
+
+func TestAuthenticationService_HasSetExperimentalFlag(t *testing.T) {
+
+	type fields struct {
+		c                 service.Client
+		basicAuthProvided bool
+		mail              string
+		token             string
+		userAgentProvided bool
+		agent             string
+	}
+	testCases := []struct {
+		name   string
+		fields fields
+		want   bool
+	}{
+
+		{
+			name:   "when the parameters are correct",
+			fields: fields{},
+			want:   false,
+		},
+	}
+	for _, testCase := range testCases {
+		t.Run(testCase.name, func(t *testing.T) {
+			a := &AuthenticationService{
+				c:                 testCase.fields.c,
+				basicAuthProvided: testCase.fields.basicAuthProvided,
+				mail:              testCase.fields.mail,
+				token:             testCase.fields.token,
+				userAgentProvided: testCase.fields.userAgentProvided,
+				agent:             testCase.fields.agent,
+			}
+			if got := a.HasSetExperimentalFlag(); got != testCase.want {
+				t.Errorf("HasSetExperimentalFlag() = %v, want %v", got, testCase.want)
+			}
+		})
+	}
+}
diff --git a/jira/sm/internal/authentication_impl_test.go b/jira/sm/internal/authentication_impl_test.go
index 78e074f9..ac34e654 100644
--- a/jira/sm/internal/authentication_impl_test.go
+++ b/jira/sm/internal/authentication_impl_test.go
@@ -209,3 +209,125 @@ func TestNewAuthenticationService(t *testing.T) {
 		})
 	}
 }
+
+func TestAuthenticationService_SetUserAgent(t *testing.T) {
+
+	type fields struct {
+		c                 service.Client
+		basicAuthProvided bool
+		mail              string
+		token             string
+		userAgentProvided bool
+		agent             string
+	}
+	type args struct {
+		agent string
+	}
+	testCases := []struct {
+		name   string
+		fields fields
+		args   args
+	}{
+		{
+			name: "when the parameters are correct",
+			args: args{agent: "mozilla-9"},
+		},
+	}
+	for _, testCase := range testCases {
+		t.Run(testCase.name, func(t *testing.T) {
+
+			a := &AuthenticationService{
+				c:                 testCase.fields.c,
+				basicAuthProvided: testCase.fields.basicAuthProvided,
+				mail:              testCase.fields.mail,
+				token:             testCase.fields.token,
+				userAgentProvided: testCase.fields.userAgentProvided,
+				agent:             testCase.fields.agent,
+			}
+
+			a.SetUserAgent(testCase.args.agent)
+		})
+	}
+}
+
+func TestAuthenticationService_SetBasicAuth(t *testing.T) {
+
+	type fields struct {
+		c                 service.Client
+		basicAuthProvided bool
+		mail              string
+		token             string
+		userAgentProvided bool
+		agent             string
+	}
+	type args struct {
+		mail  string
+		token string
+	}
+	testCases := []struct {
+		name   string
+		fields fields
+		args   args
+	}{
+		{
+			name: "when the parameters are correct",
+			args: args{
+				mail:  "example@example.com",
+				token: "token-sample",
+			},
+		},
+	}
+	for _, testCase := range testCases {
+		t.Run(testCase.name, func(t *testing.T) {
+			a := &AuthenticationService{
+				c:                 testCase.fields.c,
+				basicAuthProvided: testCase.fields.basicAuthProvided,
+				mail:              testCase.fields.mail,
+				token:             testCase.fields.token,
+				userAgentProvided: testCase.fields.userAgentProvided,
+				agent:             testCase.fields.agent,
+			}
+
+			a.SetBasicAuth(testCase.args.mail, testCase.args.token)
+		})
+	}
+}
+
+func TestAuthenticationService_HasSetExperimentalFlag(t *testing.T) {
+
+	type fields struct {
+		c                 service.Client
+		basicAuthProvided bool
+		mail              string
+		token             string
+		userAgentProvided bool
+		agent             string
+	}
+	testCases := []struct {
+		name   string
+		fields fields
+		want   bool
+	}{
+
+		{
+			name:   "when the parameters are correct",
+			fields: fields{},
+			want:   false,
+		},
+	}
+	for _, testCase := range testCases {
+		t.Run(testCase.name, func(t *testing.T) {
+			a := &AuthenticationService{
+				c:                 testCase.fields.c,
+				basicAuthProvided: testCase.fields.basicAuthProvided,
+				mail:              testCase.fields.mail,
+				token:             testCase.fields.token,
+				userAgentProvided: testCase.fields.userAgentProvided,
+				agent:             testCase.fields.agent,
+			}
+			if got := a.HasSetExperimentalFlag(); got != testCase.want {
+				t.Errorf("HasSetExperimentalFlag() = %v, want %v", got, testCase.want)
+			}
+		})
+	}
+}