Tess for overload method execute_statement. Usage example

test/tap/tests/sqlite3-t.cpp

@@ -0,0 +1,39 @@
+#include <stdlib.h>
+#include "tap.h"
+#include <cstdint>
+#include <cstring>
+#include <memory>
+#include "sqlite3db.h"
+
+int main() {
+	plan(8);
+
+	SQLite3DB *db;	// in memory
+	db = new SQLite3DB();
+	db->open((char *)"file:mem_db?mode=memory&cache=shared", SQLITE_OPEN_READWRITE | SQLITE_OPEN_CREATE | SQLITE_OPEN_FULLMUTEX);
+	bool rc=db->check_and_build_table((char*)"test", (char*)"CREATE TABLE TEST (hostname VARCHAR NOT NULL , port INT NOT NULL DEFAULT 3306)");
+	ok(rc, "TEST table is created");
+	rc=db->execute("INSERT INTO TEST (hostname, port) VALUES ('localhost', 6033)");
+	ok(rc, "Row is inserted");
+
+	// Execute statement and get a result set in std::unique_ptr. will be automatically destroyed later.yy
+	std::unique_ptr<SQLite3_result> result = std::unique_ptr<SQLite3_result>(db->execute_statement("SELECT * FROM TEST"));
+	ok(nullptr != result, "Query result is not empty");
+
+	// Execute statement and gets number of columns and error message (error message should be empty)
+	int cols=0;
+	char *error=NULL;
+	std::unique_ptr<SQLite3_result> result_2 = std::unique_ptr<SQLite3_result>(db->execute_statement("SELECT * FROM TEST", &error, &cols));
+	ok(nullptr != result_2, "Query result is not empty");
+	ok(cols == 2, "Query returns correct number of columns");
+	ok(!error, "No error message expected");
+
+	// Execute statement and gets number of columns and error message (error message should be empty)
+	error=NULL;
+	std::unique_ptr<SQLite3_result> result_3 = std::unique_ptr<SQLite3_result>(db->execute_statement("SELECT * FROM TEST1", &error));
+	ok(nullptr == result_3, "Query result is empty");
+	ok(error != NULL, "There is an error message expected");
+
+	return exit_status();
+}
+