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tailscale/util/syspolicy/syspolicy_test.go

440 lines
10 KiB
Go

// Copyright (c) Tailscale Inc & AUTHORS
// SPDX-License-Identifier: BSD-3-Clause
package syspolicy
import (
"errors"
"testing"
"time"
)
// testHandler encompasses all data types returned when testing any of the syspolicy
// methods that involve getting a policy value.
// For keys and the corresponding values, check policy_keys.go.
type testHandler struct {
t *testing.T
key Key
s string
u64 uint64
b bool
err error
calls int // used for testing reads from cache vs. handler
}
var someOtherError = errors.New("error other than not found")
func setHandlerForTest(tb testing.TB, h Handler) {
tb.Helper()
oldHandler := handler
handler = h
tb.Cleanup(func() { handler = oldHandler })
}
func (th *testHandler) ReadString(key string) (string, error) {
if key != string(th.key) {
th.t.Errorf("ReadString(%q) want %q", key, th.key)
}
th.calls++
return th.s, th.err
}
func (th *testHandler) ReadUInt64(key string) (uint64, error) {
if key != string(th.key) {
th.t.Errorf("ReadUint64(%q) want %q", key, th.key)
}
th.calls++
return th.u64, th.err
}
func (th *testHandler) ReadBoolean(key string) (bool, error) {
if key != string(th.key) {
th.t.Errorf("ReadBool(%q) want %q", key, th.key)
}
th.calls++
return th.b, th.err
}
func TestGetString(t *testing.T) {
tests := []struct {
name string
key Key
handlerValue string
handlerError error
defaultValue string
wantValue string
wantError error
}{
{
name: "read existing value",
key: AdminConsoleVisibility,
handlerValue: "hide",
wantValue: "hide",
},
{
name: "read non-existing value",
key: EnableServerMode,
handlerError: ErrNoSuchKey,
wantError: nil,
},
{
name: "read non-existing value, non-blank default",
key: EnableServerMode,
handlerError: ErrNoSuchKey,
defaultValue: "test",
wantValue: "test",
wantError: nil,
},
{
name: "reading value returns other error",
key: NetworkDevicesVisibility,
handlerError: someOtherError,
wantError: someOtherError,
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
setHandlerForTest(t, &testHandler{
t: t,
key: tt.key,
s: tt.handlerValue,
err: tt.handlerError,
})
value, err := GetString(tt.key, tt.defaultValue)
if err != tt.wantError {
t.Errorf("err=%q, want %q", err, tt.wantError)
}
if value != tt.wantValue {
t.Errorf("value=%v, want %v", value, tt.wantValue)
}
})
}
}
func TestGetUint64(t *testing.T) {
tests := []struct {
name string
key Key
handlerValue uint64
handlerError error
defaultValue uint64
wantValue uint64
wantError error
}{
{
name: "read existing value",
key: KeyExpirationNoticeTime,
handlerValue: 1,
wantValue: 1,
},
{
name: "read non-existing value",
key: LogSCMInteractions,
handlerValue: 0,
handlerError: ErrNoSuchKey,
wantValue: 0,
},
{
name: "read non-existing value, non-zero default",
key: LogSCMInteractions,
defaultValue: 2,
handlerError: ErrNoSuchKey,
wantValue: 2,
},
{
name: "reading value returns other error",
key: FlushDNSOnSessionUnlock,
handlerError: someOtherError,
wantError: someOtherError,
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
setHandlerForTest(t, &testHandler{
t: t,
key: tt.key,
u64: tt.handlerValue,
err: tt.handlerError,
})
value, err := GetUint64(tt.key, tt.defaultValue)
if err != tt.wantError {
t.Errorf("err=%q, want %q", err, tt.wantError)
}
if value != tt.wantValue {
t.Errorf("value=%v, want %v", value, tt.wantValue)
}
})
}
}
func TestGetBoolean(t *testing.T) {
tests := []struct {
name string
key Key
handlerValue bool
handlerError error
defaultValue bool
wantValue bool
wantError error
}{
{
name: "read existing value",
key: FlushDNSOnSessionUnlock,
handlerValue: true,
wantValue: true,
},
{
name: "read non-existing value",
key: LogSCMInteractions,
handlerValue: false,
handlerError: ErrNoSuchKey,
wantValue: false,
},
{
name: "reading value returns other error",
key: FlushDNSOnSessionUnlock,
handlerError: someOtherError,
wantError: someOtherError,
defaultValue: true,
wantValue: false,
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
setHandlerForTest(t, &testHandler{
t: t,
key: tt.key,
b: tt.handlerValue,
err: tt.handlerError,
})
value, err := GetBoolean(tt.key, tt.defaultValue)
if err != tt.wantError {
t.Errorf("err=%q, want %q", err, tt.wantError)
}
if value != tt.wantValue {
t.Errorf("value=%v, want %v", value, tt.wantValue)
}
})
}
}
func TestGetPreferenceOption(t *testing.T) {
tests := []struct {
name string
key Key
handlerValue string
handlerError error
wantValue PreferenceOption
wantError error
}{
{
name: "always by policy",
key: EnableIncomingConnections,
handlerValue: "always",
wantValue: alwaysByPolicy,
},
{
name: "never by policy",
key: EnableIncomingConnections,
handlerValue: "never",
wantValue: neverByPolicy,
},
{
name: "use default",
key: EnableIncomingConnections,
handlerValue: "",
wantValue: showChoiceByPolicy,
},
{
name: "read non-existing value",
key: EnableIncomingConnections,
handlerError: ErrNoSuchKey,
wantValue: showChoiceByPolicy,
},
{
name: "other error is returned",
key: EnableIncomingConnections,
handlerError: someOtherError,
wantValue: showChoiceByPolicy,
wantError: someOtherError,
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
setHandlerForTest(t, &testHandler{
t: t,
key: tt.key,
s: tt.handlerValue,
err: tt.handlerError,
})
option, err := GetPreferenceOption(tt.key)
if err != tt.wantError {
t.Errorf("err=%q, want %q", err, tt.wantError)
}
if option != tt.wantValue {
t.Errorf("option=%v, want %v", option, tt.wantValue)
}
})
}
}
func TestGetVisibility(t *testing.T) {
tests := []struct {
name string
key Key
handlerValue string
handlerError error
wantValue Visibility
wantError error
}{
{
name: "hidden by policy",
key: AdminConsoleVisibility,
handlerValue: "hide",
wantValue: hiddenByPolicy,
},
{
name: "visibility default",
key: AdminConsoleVisibility,
handlerValue: "show",
wantValue: visibleByPolicy,
},
{
name: "read non-existing value",
key: AdminConsoleVisibility,
handlerValue: "show",
handlerError: ErrNoSuchKey,
wantValue: visibleByPolicy,
},
{
name: "other error is returned",
key: AdminConsoleVisibility,
handlerValue: "show",
handlerError: someOtherError,
wantValue: visibleByPolicy,
wantError: someOtherError,
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
setHandlerForTest(t, &testHandler{
t: t,
key: tt.key,
s: tt.handlerValue,
err: tt.handlerError,
})
visibility, err := GetVisibility(tt.key)
if err != tt.wantError {
t.Errorf("err=%q, want %q", err, tt.wantError)
}
if visibility != tt.wantValue {
t.Errorf("visibility=%v, want %v", visibility, tt.wantValue)
}
})
}
}
func TestGetDuration(t *testing.T) {
tests := []struct {
name string
key Key
handlerValue string
handlerError error
defaultValue time.Duration
wantValue time.Duration
wantError error
}{
{
name: "read existing value",
key: KeyExpirationNoticeTime,
handlerValue: "2h",
wantValue: 2 * time.Hour,
defaultValue: 24 * time.Hour,
},
{
name: "invalid duration value",
key: KeyExpirationNoticeTime,
handlerValue: "-20",
wantValue: 24 * time.Hour,
defaultValue: 24 * time.Hour,
},
{
name: "read non-existing value",
key: KeyExpirationNoticeTime,
handlerError: ErrNoSuchKey,
wantValue: 24 * time.Hour,
defaultValue: 24 * time.Hour,
},
{
name: "read non-existing value different default",
key: KeyExpirationNoticeTime,
handlerError: ErrNoSuchKey,
wantValue: 0 * time.Second,
defaultValue: 0 * time.Second,
},
{
name: "other error is returned",
key: KeyExpirationNoticeTime,
handlerError: someOtherError,
wantValue: 24 * time.Hour,
wantError: someOtherError,
defaultValue: 24 * time.Hour,
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
setHandlerForTest(t, &testHandler{
t: t,
key: tt.key,
s: tt.handlerValue,
err: tt.handlerError,
})
duration, err := GetDuration(tt.key, tt.defaultValue)
if err != tt.wantError {
t.Errorf("err=%q, want %q", err, tt.wantError)
}
if duration != tt.wantValue {
t.Errorf("duration=%v, want %v", duration, tt.wantValue)
}
})
}
}
func TestSelectControlURL(t *testing.T) {
tests := []struct {
reg, disk, want string
}{
// Modern default case.
{"", "", "https://controlplane.tailscale.com"},
// For a user who installed prior to Dec 2020, with
// stuff in their registry.
{"https://login.tailscale.com", "", "https://login.tailscale.com"},
// Ignore pre-Dec'20 LoginURL from installer if prefs
// prefs overridden manually to an on-prem control
// server.
{"https://login.tailscale.com", "http://on-prem", "http://on-prem"},
// Something unknown explicitly set in the registry always wins.
{"http://explicit-reg", "", "http://explicit-reg"},
{"http://explicit-reg", "http://on-prem", "http://explicit-reg"},
{"http://explicit-reg", "https://login.tailscale.com", "http://explicit-reg"},
{"http://explicit-reg", "https://controlplane.tailscale.com", "http://explicit-reg"},
// If nothing in the registry, disk wins.
{"", "http://on-prem", "http://on-prem"},
}
for _, tt := range tests {
if got := SelectControlURL(tt.reg, tt.disk); got != tt.want {
t.Errorf("(reg %q, disk %q) = %q; want %q", tt.reg, tt.disk, got, tt.want)
}
}
}