Add some basic tests for the database

test/fixtures/spi_fixture.hpp

@@ -0,0 +1,10 @@
+#pragma once
+
+#include "catch2/catch.hpp"
+#include "spi.hpp"
+
+class SpiFixture {
+ public:
+  SpiFixture() { REQUIRE(drivers::init_spi() == ESP_OK); }
+  ~SpiFixture() { drivers::deinit_spi(); }
+};