test: add USB host support mocks

Author: bahaaador

Taskfile.yml

@@ -42,7 +42,7 @@ tasks:
     desc: Run tests
     cmds:
       - echo "Running tests..."
-      - go test ./... -v
+      - go test ./...
 
   run:
     desc: Run the application locally

cmd/bt-hid-relay/main_test.go

@@ -30,6 +30,11 @@ func init() {
 			return "", fmt.Errorf("device not found")
 		}
 	}
+
+	// Mock USB host support check
+	device.CheckUSBHostSupport = func() (bool, bool, error) {
+		return true, true, nil
+	}
 }
 
 func TestParseFlags(t *testing.T) {
@@ -110,11 +115,13 @@ func TestMain(t *testing.T) {
 	// Save original values
 	originalExit := osExit
 	originalFindInputDevice := device.FindInputDeviceFunc
+	originalCheckUSBHostSupport := device.CheckUSBHostSupport
 
 	// Restore after test
 	defer func() {
 		osExit = originalExit
 		device.FindInputDeviceFunc = originalFindInputDevice
+		device.CheckUSBHostSupport = originalCheckUSBHostSupport
 		log.SetOutput(os.Stderr)
 	}()
 
@@ -130,6 +137,11 @@ func TestMain(t *testing.T) {
 		}
 	}
 
+	// Mock USB host support check
+	device.CheckUSBHostSupport = func() (bool, bool, error) {
+		return true, true, nil
+	}
+
 	// Mock os.Exit
 	osExit = func(code int) {
 		exitCalled = true

internal/device/host_check.go

@@ -5,8 +5,14 @@ import (
 	"strings"
 )
 
+// CheckUSBHostSupportFunc is a type for the host support check function
+type CheckUSBHostSupportFunc func() (bool, bool, error)
+
+// CheckUSBHostSupport is the function variable that can be replaced in tests
+var CheckUSBHostSupport CheckUSBHostSupportFunc = checkUSBHostSupport
+
 // CheckUSBHostSupport verifies both USB host hardware capability and if it's enabled
-func CheckUSBHostSupport() (hasCapability bool, isEnabled bool, err error) {
+func checkUSBHostSupport() (hasCapability bool, isEnabled bool, err error) {
 	// Check hardware capability first
 	hasCapability = false