Implement axis targets, axis -> button and axis -> relative axis mappings. (#1)

Co-authored-by: Anna Rose Wiggins <annabunches@gmail.com>
Co-committed-by: Anna Rose Wiggins <annabunches@gmail.com>

internal/mappingrules/mapping_rule_axis_to_button_test.go

@@ -0,0 +1,186 @@
+package mappingrules
+
+import (
+	"testing"
+	"time"
+
+	"github.com/holoplot/go-evdev"
+	"github.com/jonboulle/clockwork"
+	"github.com/stretchr/testify/suite"
+)
+
+type MappingRuleAxisToButtonTests struct {
+	suite.Suite
+	inputDevice  *InputDeviceMock
+	inputRule    *RuleTargetAxis
+	outputDevice *evdev.InputDevice
+	outputRule   *RuleTargetButton
+	mode         *string
+	base         MappingRuleBase
+}
+
+func (t *MappingRuleAxisToButtonTests) SetupTest() {
+	mode := "*"
+	t.mode = &mode
+	t.inputDevice = new(InputDeviceMock)
+	t.inputDevice.On("AbsInfos").Return(map[evdev.EvCode]evdev.AbsInfo{
+		evdev.ABS_X: {
+			Minimum: 0,
+			Maximum: 10000,
+		},
+	}, nil)
+	t.inputRule, _ = NewRuleTargetAxis("test-input", t.inputDevice, evdev.ABS_X, false, int32(0), int32(1000))
+
+	t.outputDevice = &evdev.InputDevice{}
+	t.outputRule, _ = NewRuleTargetButton("test-output", t.outputDevice, evdev.ABS_X, false)
+	t.base = NewMappingRuleBase("", []string{"*"})
+}
+
+func (t *MappingRuleAxisToButtonTests) TestMatchEvent() {
+
+	// A valid input should set a nextevent
+	t.Run("No Repeat", func() {
+		testRule := NewMappingRuleAxisToButton(t.base, t.inputRule, t.outputRule, 0, 0)
+
+		t.Run("Valid Input", func() {
+			testRule.MatchEvent(t.inputDevice, &evdev.InputEvent{
+				Type:  evdev.EV_ABS,
+				Code:  evdev.ABS_X,
+				Value: 1001,
+			}, t.mode)
+			t.NotEqual(NoNextEvent, testRule.nextEvent)
+		})
+
+		t.Run("Deadzone Input", func() {
+			testRule.MatchEvent(t.inputDevice, &evdev.InputEvent{
+				Type:  evdev.EV_ABS,
+				Code:  evdev.ABS_X,
+				Value: 500,
+			}, t.mode)
+			t.Equal(NoNextEvent, testRule.nextEvent)
+		})
+	})
+
+	t.Run("Repeat", func() {
+		testRule := NewMappingRuleAxisToButton(t.base, t.inputRule, t.outputRule, 750, 250)
+		testRule.MatchEvent(t.inputDevice, &evdev.InputEvent{
+			Type:  evdev.EV_ABS,
+			Code:  evdev.ABS_X,
+			Value: 10000,
+		}, t.mode)
+		t.Equal(time.Duration(250*time.Millisecond), testRule.nextEvent)
+
+		testRule.MatchEvent(t.inputDevice, &evdev.InputEvent{
+			Type:  evdev.EV_ABS,
+			Code:  evdev.ABS_X,
+			Value: 1001,
+		}, t.mode)
+		t.True(testRule.nextEvent > time.Duration(700*time.Millisecond))
+
+		testRule.MatchEvent(t.inputDevice, &evdev.InputEvent{
+			Type:  evdev.EV_ABS,
+			Code:  evdev.ABS_X,
+			Value: 5500,
+		}, t.mode)
+		t.Equal(time.Duration(500*time.Millisecond), testRule.nextEvent)
+	})
+}
+
+func (t *MappingRuleAxisToButtonTests) TestTimerEvent() {
+	t.Run("No Repeat", func() {
+		// Get event if called immediately
+		t.Run("Event is available immediately", func() {
+			testRule, _ := buildTimerRule(t, 0, 0, 0)
+
+			event := testRule.TimerEvent()
+
+			t.EqualValues(1, event.Value)
+			t.Equal(true, testRule.pressed)
+		})
+
+		// Off event on second call
+		t.Run("Event emits off on second call", func() {
+			testRule, _ := buildTimerRule(t, 0, 0, 0)
+
+			testRule.TimerEvent()
+			event := testRule.TimerEvent()
+
+			t.EqualValues(0, event.Value)
+			t.Equal(false, testRule.pressed)
+		})
+
+		// No further event, even if we wait a while
+		t.Run("Additional events are not emitted while still active.", func() {
+			testRule, mockClock := buildTimerRule(t, 0, 0, 0)
+
+			testRule.TimerEvent()
+			testRule.TimerEvent()
+
+			mockClock.Advance(10 * time.Millisecond)
+			event := testRule.TimerEvent()
+			t.Nil(event)
+			t.Equal(false, testRule.pressed)
+		})
+	})
+
+	t.Run("Repeat", func() {
+		t.Run("No event if called immediately", func() {
+			testRule, _ := buildTimerRule(t, 100, 10, 50*time.Millisecond)
+			event := testRule.TimerEvent()
+			t.Nil(event)
+		})
+
+		t.Run("No event after 49ms", func() {
+			testRule, mockClock := buildTimerRule(t, 100, 10, 50*time.Millisecond)
+			mockClock.Advance(49 * time.Millisecond)
+
+			event := testRule.TimerEvent()
+
+			t.Nil(event)
+		})
+
+		t.Run("Event after 50ms", func() {
+			testRule, mockClock := buildTimerRule(t, 100, 10, 50*time.Millisecond)
+			mockClock.Advance(50 * time.Millisecond)
+
+			event := testRule.TimerEvent()
+
+			t.EqualValues(1, event.Value)
+			t.Equal(true, testRule.pressed)
+		})
+
+		t.Run("Additional event at 100ms", func() {
+			testRule, mockClock := buildTimerRule(t, 100, 10, 50*time.Millisecond)
+
+			mockClock.Advance(50 * time.Millisecond)
+			testRule.TimerEvent()
+			testRule.TimerEvent()
+
+			mockClock.Advance(50 * time.Millisecond)
+			event := testRule.TimerEvent()
+
+			t.NotNil(event)
+		})
+	})
+}
+
+func TestRunnerMappingRuleAxisToButtonTests(t *testing.T) {
+	suite.Run(t, new(MappingRuleAxisToButtonTests))
+}
+
+// buildTimerRule creates a MappingRuleAxisToButton with a mocked clock
+func buildTimerRule(t *MappingRuleAxisToButtonTests,
+	repeatMin,
+	repeatMax int,
+	nextEvent time.Duration) (*MappingRuleAxisToButton, *clockwork.FakeClock) {
+
+	mockClock := clockwork.NewFakeClock()
+	testRule := NewMappingRuleAxisToButton(t.base, t.inputRule, t.outputRule, repeatMin, repeatMax)
+	testRule.clock = mockClock
+	testRule.lastEvent = testRule.clock.Now()
+	testRule.nextEvent = nextEvent
+	if nextEvent != NoNextEvent {
+		testRule.active = true
+	}
+	return testRule, mockClock
+}