supports binary-format, only esp* supported for now

internal/firmware/ext_test.go

@@ -0,0 +1,28 @@
+package firmware
+
+import "testing"
+
+func TestBinaryExt(t *testing.T) {
+	tests := []struct {
+		name         string
+		binaryFormat string
+		expected     string
+	}{
+		{"ESP32", "esp32", ".bin"},
+		{"ESP8266", "esp8266", ".bin"},
+		{"ESP32C3", "esp32c3", ".bin"},
+		{"UF2", "uf2", ""},
+		{"ELF", "elf", ""},
+		{"Empty", "", ""},
+		{"NRF-DFU", "nrf-dfu", ""},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			result := BinaryExt(tt.binaryFormat)
+			if result != tt.expected {
+				t.Errorf("BinaryExt() = %q, want %q", result, tt.expected)
+			}
+		})
+	}
+}