feat: LedEngine for controlling LED patterns (e.g. burst blinks)

Signed-off-by: Matthias Riegler <matthias.riegler@ankorstore.com>

pkg/util/clock.go

@@ -0,0 +1,24 @@
+package util
+
+import (
+	"time"
+)
+
+// Clock is an interface for the time package
+type Clock interface {
+	// Now returns the current time.
+	Now() time.Time
+	// After waits for the duration to elapse and then sends the current time
+	After(d time.Duration) <-chan time.Time
+}
+
+// RealClock implements the Clock interface using the real time package.
+type RealClock struct{}
+
+func (RealClock) Now() time.Time {
+	return time.Now()
+}
+
+func (RealClock) After(d time.Duration) <-chan time.Time {
+	return time.After(d)
+}

pkg/util/clock_mock.go

@@ -0,0 +1,24 @@
+package util
+
+import (
+	"time"
+
+	"github.com/stretchr/testify/mock"
+)
+
+// MockClock implements the Clock interface using the testify mock package.
+type MockClock struct {
+	mock.Mock
+}
+
+// Now returns the current time.
+func (mc *MockClock) Now() time.Time {
+	args := mc.Called()
+	return args.Get(0).(time.Time)
+}
+
+// After waits for the duration to elapse and then sends the current time
+func (mc *MockClock) After(d time.Duration) <-chan time.Time {
+	args := mc.Called(d)
+	return args.Get(0).(chan time.Time)
+}