Add support for multiple keycode formats. (#3)

Additionally:

- Increases maximum supported buttons per output device to 74.
- Updates documentation.

Reviewed-on: #3
Co-authored-by: Anna Rose Wiggins <annabunches@gmail.com>
Co-committed-by: Anna Rose Wiggins <annabunches@gmail.com>

internal/config/make_rule_targets_test.go

@@ -0,0 +1,147 @@
+package config
+
+import (
+	"testing"
+
+	"github.com/holoplot/go-evdev"
+	"github.com/stretchr/testify/suite"
+)
+
+type MakeRuleTargetsTests struct {
+	suite.Suite
+	devs map[string]*evdev.InputDevice
+}
+
+func (t *MakeRuleTargetsTests) SetupSuite() {
+	t.devs = map[string]*evdev.InputDevice{
+		"test": {},
+	}
+}
+
+func (t *MakeRuleTargetsTests) TestMakeRuleTargetButton() {
+	config := RuleTargetConfig{
+		Device: "test",
+	}
+	t.Run("Standard keycode", func() {
+		config.Button = "BTN_TRIGGER"
+		rule, err := makeRuleTargetButton(config, t.devs)
+		t.Nil(err)
+		t.EqualValues(evdev.BTN_TRIGGER, rule.Button)
+	})
+
+	t.Run("Hex code", func() {
+		config.Button = "0x2fd"
+		rule, err := makeRuleTargetButton(config, t.devs)
+		t.Nil(err)
+		t.EqualValues(evdev.EvCode(0x2fd), rule.Button)
+	})
+
+	t.Run("Index", func() {
+		config.Button = "3"
+		rule, err := makeRuleTargetButton(config, t.devs)
+		t.Nil(err)
+		t.EqualValues(evdev.BTN_TOP, rule.Button)
+	})
+
+	t.Run("Index too high", func() {
+		config.Button = "74"
+		_, err := makeRuleTargetButton(config, t.devs)
+		t.NotNil(err)
+	})
+
+	t.Run("Un-prefixed keycode", func() {
+		config.Button = "pinkie"
+		rule, err := makeRuleTargetButton(config, t.devs)
+		t.Nil(err)
+		t.EqualValues(evdev.BTN_PINKIE, rule.Button)
+	})
+
+	t.Run("Invalid keycode", func() {
+		config.Button = "foo"
+		_, err := makeRuleTargetButton(config, t.devs)
+		t.NotNil(err)
+	})
+}
+
+func (t *MakeRuleTargetsTests) TestMakeRuleTargetAxis() {
+	config := RuleTargetConfig{
+		Device: "test",
+	}
+
+	t.Run("Standard keycode", func() {
+		config.Axis = "ABS_X"
+		rule, err := makeRuleTargetAxis(config, t.devs)
+		t.Nil(err)
+		t.EqualValues(evdev.ABS_X, rule.Axis)
+	})
+
+	t.Run("Hex keycode", func() {
+		config.Axis = "0x01"
+		rule, err := makeRuleTargetAxis(config, t.devs)
+		t.Nil(err)
+		t.EqualValues(evdev.ABS_Y, rule.Axis)
+	})
+
+	t.Run("Un-prefixed keycode", func() {
+		config.Axis = "x"
+		rule, err := makeRuleTargetAxis(config, t.devs)
+		t.Nil(err)
+		t.EqualValues(evdev.ABS_X, rule.Axis)
+	})
+
+	t.Run("Invalid keycode", func() {
+		config.Axis = "foo"
+		_, err := makeRuleTargetAxis(config, t.devs)
+		t.NotNil(err)
+	})
+
+	t.Run("Invalid deadzone", func() {
+		config.DeadzoneEnd = 100
+		config.DeadzoneStart = 1000
+		_, err := makeRuleTargetAxis(config, t.devs)
+		t.NotNil(err)
+	})
+}
+
+func (t *MakeRuleTargetsTests) TestMakeRuleTargetRelaxis() {
+	config := RuleTargetConfig{
+		Device: "test",
+	}
+
+	t.Run("Standard keycode", func() {
+		config.Axis = "REL_WHEEL"
+		rule, err := makeRuleTargetRelaxis(config, t.devs)
+		t.Nil(err)
+		t.EqualValues(evdev.REL_WHEEL, rule.Axis)
+	})
+
+	t.Run("Hex keycode", func() {
+		config.Axis = "0x00"
+		rule, err := makeRuleTargetRelaxis(config, t.devs)
+		t.Nil(err)
+		t.EqualValues(evdev.REL_X, rule.Axis)
+	})
+
+	t.Run("Un-prefixed keycode", func() {
+		config.Axis = "wheel"
+		rule, err := makeRuleTargetRelaxis(config, t.devs)
+		t.Nil(err)
+		t.EqualValues(evdev.REL_WHEEL, rule.Axis)
+	})
+
+	t.Run("Invalid keycode", func() {
+		config.Axis = "foo"
+		_, err := makeRuleTargetRelaxis(config, t.devs)
+		t.NotNil(err)
+	})
+
+	t.Run("Incorrect axis type", func() {
+		config.Axis = "ABS_X"
+		_, err := makeRuleTargetRelaxis(config, t.devs)
+		t.NotNil(err)
+	})
+}
+
+func TestRunnerMakeRuleTargets(t *testing.T) {
+	suite.Run(t, new(MakeRuleTargetsTests))
+}