screensaver: emit ActiveChanged on lock/unlock (#1761)

core/internal/server/freedesktop/screensaver_test.go

@@ -0,0 +1,102 @@
+package freedesktop
+
+import (
+	"sync"
+	"testing"
+	"time"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestSetScreenLockActive_ChangesState(t *testing.T) {
+	manager := &Manager{
+		state: &FreedeskState{
+			Screensaver: ScreensaverState{Available: true},
+		},
+		stateMutex: sync.RWMutex{},
+	}
+
+	assert.False(t, manager.GetScreensaverState().Active)
+
+	manager.SetScreenLockActive(true)
+	assert.True(t, manager.GetScreensaverState().Active)
+
+	manager.SetScreenLockActive(false)
+	assert.False(t, manager.GetScreensaverState().Active)
+}
+
+func TestSetScreenLockActive_NoChangeNoDuplicate(t *testing.T) {
+	ch := make(chan ScreensaverState, 64)
+	manager := &Manager{
+		state: &FreedeskState{
+			Screensaver: ScreensaverState{Available: true, Active: false},
+		},
+		stateMutex: sync.RWMutex{},
+	}
+	manager.screensaverSubscribers.Store("test", ch)
+	defer manager.screensaverSubscribers.Delete("test")
+
+	// Setting to same value should not notify
+	manager.SetScreenLockActive(false)
+
+	select {
+	case <-ch:
+		t.Fatal("should not have received notification for no-change")
+	case <-time.After(50 * time.Millisecond):
+		// Expected: no notification
+	}
+}
+
+func TestSetScreenLockActive_NotifiesSubscribers(t *testing.T) {
+	ch := make(chan ScreensaverState, 64)
+	manager := &Manager{
+		state: &FreedeskState{
+			Screensaver: ScreensaverState{Available: true, Active: false},
+		},
+		stateMutex: sync.RWMutex{},
+	}
+	manager.screensaverSubscribers.Store("test", ch)
+	defer manager.screensaverSubscribers.Delete("test")
+
+	manager.SetScreenLockActive(true)
+
+	select {
+	case state := <-ch:
+		assert.True(t, state.Active)
+	case <-time.After(time.Second):
+		t.Fatal("timeout waiting for subscriber notification")
+	}
+}
+
+func TestSetScreenLockActive_NilSessionConn(t *testing.T) {
+	manager := &Manager{
+		state: &FreedeskState{
+			Screensaver: ScreensaverState{Available: true},
+		},
+		stateMutex: sync.RWMutex{},
+	}
+
+	assert.NotPanics(t, func() {
+		manager.SetScreenLockActive(true)
+	})
+	assert.True(t, manager.GetScreensaverState().Active)
+}
+
+func TestGetActive_ReturnsCurrentState(t *testing.T) {
+	manager := &Manager{
+		state: &FreedeskState{
+			Screensaver: ScreensaverState{Available: true, Active: true},
+		},
+		stateMutex: sync.RWMutex{},
+	}
+
+	handler := &screensaverHandler{manager: manager}
+	active, dbusErr := handler.GetActive()
+	assert.Nil(t, dbusErr)
+	assert.True(t, active)
+}
+
+func TestScreensaverState_ActiveDefaultsFalse(t *testing.T) {
+	state := ScreensaverState{}
+	assert.False(t, state.Active)
+}