Fix: add accidentally removed test file back, devcontainer build process on clean devcontainer

Makefile

@@ -149,6 +149,7 @@ lint: lint-go lint-ui
 lint-go: build_audio_deps
 	@echo "Running golangci-lint..."
 	@mkdir -p static && touch static/.gitkeep
+	PKG_CONFIG_PATH="$(AUDIO_LIBS_DIR)/alsa-lib-$(ALSA_VERSION)/utils:$(AUDIO_LIBS_DIR)/opus-$(OPUS_VERSION)" \
 	CGO_ENABLED=1 \
 	CGO_CFLAGS="-I$(AUDIO_LIBS_DIR)/alsa-lib-$(ALSA_VERSION)/include -I$(AUDIO_LIBS_DIR)/opus-$(OPUS_VERSION)/include -I$(AUDIO_LIBS_DIR)/opus-$(OPUS_VERSION)/celt" \
 	CGO_LDFLAGS="-L$(AUDIO_LIBS_DIR)/alsa-lib-$(ALSA_VERSION)/src/.libs -lasound -L$(AUDIO_LIBS_DIR)/opus-$(OPUS_VERSION)/.libs -lopus -lm -ldl -static" \
@@ -162,6 +163,7 @@ lint-fix: lint-go-fix lint-ui-fix
 lint-go-fix: build_audio_deps
 	@echo "Running golangci-lint with auto-fix..."
 	@mkdir -p static && touch static/.gitkeep
+	PKG_CONFIG_PATH="$(AUDIO_LIBS_DIR)/alsa-lib-$(ALSA_VERSION)/utils:$(AUDIO_LIBS_DIR)/opus-$(OPUS_VERSION)" \
 	CGO_ENABLED=1 \
 	CGO_CFLAGS="-I$(AUDIO_LIBS_DIR)/alsa-lib-$(ALSA_VERSION)/include -I$(AUDIO_LIBS_DIR)/opus-$(OPUS_VERSION)/include -I$(AUDIO_LIBS_DIR)/opus-$(OPUS_VERSION)/celt" \
 	CGO_LDFLAGS="-L$(AUDIO_LIBS_DIR)/alsa-lib-$(ALSA_VERSION)/src/.libs -lasound -L$(AUDIO_LIBS_DIR)/opus-$(OPUS_VERSION)/.libs -lopus -lm -ldl -static" \

internal/usbgadget/changeset_arm_test.go

@@ -0,0 +1,115 @@
+//go:build arm && linux
+
+package usbgadget
+
+import (
+	"os"
+	"strings"
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+var (
+	usbConfig = &Config{
+		VendorId:     "0x1d6b", //The Linux Foundation
+		ProductId:    "0x0104", //Multifunction Composite Gadget
+		SerialNumber: "",
+		Manufacturer: "JetKVM",
+		Product:      "USB Emulation Device",
+		strictMode:   true,
+	}
+	usbDevices = &Devices{
+		AbsoluteMouse: true,
+		RelativeMouse: true,
+		Keyboard:      true,
+		MassStorage:   true,
+	}
+	usbGadgetName = "jetkvm"
+	usbGadget     *UsbGadget
+)
+
+var oldAbsoluteMouseCombinedReportDesc = []byte{
+	0x05, 0x01, // Usage Page (Generic Desktop Ctrls)
+	0x09, 0x02, // Usage (Mouse)
+	0xA1, 0x01, // Collection (Application)
+
+	// Report ID 1: Absolute Mouse Movement
+	0x85, 0x01, //     Report ID (1)
+	0x09, 0x01, //     Usage (Pointer)
+	0xA1, 0x00, //     Collection (Physical)
+	0x05, 0x09, //         Usage Page (Button)
+	0x19, 0x01, //         Usage Minimum (0x01)
+	0x29, 0x03, //         Usage Maximum (0x03)
+	0x15, 0x00, //         Logical Minimum (0)
+	0x25, 0x01, //         Logical Maximum (1)
+	0x75, 0x01, //         Report Size (1)
+	0x95, 0x03, //         Report Count (3)
+	0x81, 0x02, //         Input (Data, Var, Abs)
+	0x95, 0x01, //         Report Count (1)
+	0x75, 0x05, //         Report Size (5)
+	0x81, 0x03, //         Input (Cnst, Var, Abs)
+	0x05, 0x01, //         Usage Page (Generic Desktop Ctrls)
+	0x09, 0x30, //         Usage (X)
+	0x09, 0x31, //         Usage (Y)
+	0x16, 0x00, 0x00, //         Logical Minimum (0)
+	0x26, 0xFF, 0x7F, //         Logical Maximum (32767)
+	0x36, 0x00, 0x00, //         Physical Minimum (0)
+	0x46, 0xFF, 0x7F, //         Physical Maximum (32767)
+	0x75, 0x10, //         Report Size (16)
+	0x95, 0x02, //         Report Count (2)
+	0x81, 0x02, //         Input (Data, Var, Abs)
+	0xC0, //     End Collection
+
+	// Report ID 2: Relative Wheel Movement
+	0x85, 0x02, //     Report ID (2)
+	0x09, 0x38, //     Usage (Wheel)
+	0x15, 0x81, //     Logical Minimum (-127)
+	0x25, 0x7F, //     Logical Maximum (127)
+	0x75, 0x08, //     Report Size (8)
+	0x95, 0x01, //     Report Count (1)
+	0x81, 0x06, //     Input (Data, Var, Rel)
+
+	0xC0, // End Collection
+}
+
+func TestUsbGadgetInit(t *testing.T) {
+	assert := assert.New(t)
+	usbGadget = NewUsbGadget(usbGadgetName, usbDevices, usbConfig, nil)
+
+	assert.NotNil(usbGadget)
+}
+
+func TestUsbGadgetStrictModeInitFail(t *testing.T) {
+	usbConfig.strictMode = true
+	u := NewUsbGadget("test", usbDevices, usbConfig, nil)
+	assert.Nil(t, u, "should be nil")
+}
+
+func TestUsbGadgetUDCNotBoundAfterReportDescrChanged(t *testing.T) {
+	assert := assert.New(t)
+	usbGadget = NewUsbGadget(usbGadgetName, usbDevices, usbConfig, nil)
+	assert.NotNil(usbGadget)
+
+	// release the usb gadget and create a new one
+	usbGadget = nil
+
+	altGadgetConfig := defaultGadgetConfig
+
+	oldAbsoluteMouseConfig := altGadgetConfig["absolute_mouse"]
+	oldAbsoluteMouseConfig.reportDesc = oldAbsoluteMouseCombinedReportDesc
+	altGadgetConfig["absolute_mouse"] = oldAbsoluteMouseConfig
+
+	usbGadget = newUsbGadget(usbGadgetName, altGadgetConfig, usbDevices, usbConfig, nil)
+	assert.NotNil(usbGadget)
+
+	udcs := getUdcs()
+	assert.Equal(1, len(udcs), "should be only one UDC")
+	// check if the UDC is bound
+	udc := udcs[0]
+	assert.NotNil(udc, "UDC should exist")
+
+	udcStr, err := os.ReadFile("/sys/kernel/config/usb_gadget/jetkvm/UDC")
+	assert.Nil(err, "usb_gadget/UDC should exist")
+	assert.Equal(strings.TrimSpace(udc), strings.TrimSpace(string(udcStr)), "UDC should be the same")
+}