Add more tests (#4)

This also refactors some of the code parsing logic.

Reviewed-on: #4
Co-authored-by: Anna Rose Wiggins <annabunches@gmail.com>
Co-committed-by: Anna Rose Wiggins <annabunches@gmail.com>

internal/config/devices_test.go

@@ -0,0 +1,63 @@
+package config
+
+import (
+	"testing"
+
+	"github.com/holoplot/go-evdev"
+	"github.com/stretchr/testify/suite"
+)
+
+type DevicesConfigTests struct {
+	suite.Suite
+}
+
+func TestRunnerDevicesConfig(t *testing.T) {
+	suite.Run(t, new(DevicesConfigTests))
+}
+
+func (t *DevicesConfigTests) TestMakeAxes() {
+	t.Run("8 axes", func() {
+		axes := makeAxes(8)
+		t.Equal(8, len(axes))
+		t.Contains(axes, evdev.EvCode(evdev.ABS_X))
+		t.Contains(axes, evdev.EvCode(evdev.ABS_Y))
+		t.Contains(axes, evdev.EvCode(evdev.ABS_Z))
+		t.Contains(axes, evdev.EvCode(evdev.ABS_RX))
+		t.Contains(axes, evdev.EvCode(evdev.ABS_RY))
+		t.Contains(axes, evdev.EvCode(evdev.ABS_RZ))
+		t.Contains(axes, evdev.EvCode(evdev.ABS_THROTTLE))
+		t.Contains(axes, evdev.EvCode(evdev.ABS_RUDDER))
+	})
+
+	t.Run("9 axes is truncated", func() {
+		axes := makeAxes(9)
+		t.Equal(8, len(axes))
+	})
+
+	t.Run("3 axes", func() {
+		axes := makeAxes(3)
+		t.Equal(3, len(axes))
+		t.Contains(axes, evdev.EvCode(evdev.ABS_X))
+		t.Contains(axes, evdev.EvCode(evdev.ABS_Y))
+		t.Contains(axes, evdev.EvCode(evdev.ABS_Z))
+	})
+}
+
+func (t *DevicesConfigTests) TestMakeButtons() {
+	t.Run("Maximum buttons", func() {
+		buttons := makeButtons(VirtualDeviceMaxButtons)
+		t.Equal(VirtualDeviceMaxButtons, len(buttons))
+	})
+
+	t.Run("Truncated buttons", func() {
+		buttons := makeButtons(VirtualDeviceMaxButtons + 1)
+		t.Equal(VirtualDeviceMaxButtons, len(buttons))
+	})
+
+	t.Run("16 buttons", func() {
+		buttons := makeButtons(16)
+		t.Equal(16, len(buttons))
+		t.Contains(buttons, evdev.EvCode(evdev.BTN_DEAD))
+		t.NotContains(buttons, evdev.EvCode(evdev.BTN_TRIGGER_HAPPY))
+	})
+}