Added tests for schemata (#76)

tests/sqlite/test_to_select_from_with_schema.cpp

@@ -0,0 +1,27 @@
+#include <gtest/gtest.h>
+
+#include <sqlgen.hpp>
+#include <sqlgen/sqlite.hpp>
+
+namespace test_to_select_from_with_schema {
+
+struct TestTable {
+  constexpr static const char* tablename = "test_table";
+  constexpr static const char* schema = "my_schema";
+
+  std::string field1;
+  int32_t field2;
+  sqlgen::PrimaryKey<uint32_t> id;
+  std::optional<std::string> nullable;
+};
+
+TEST(sqlite, test_to_select_from_with_schema) {
+  const auto select_from_stmt =
+      sqlgen::transpilation::read_to_select_from<TestTable>();
+  const auto conn = sqlgen::sqlite::connect().value();
+  const auto expected =
+      R"(SELECT "field1", "field2", "id", "nullable" FROM "my_schema"."test_table")";
+
+  EXPECT_EQ(conn->to_sql(select_from_stmt), expected);
+}
+}  // namespace test_to_select_from_with_schema