Added a more realistic test.

Author: pdenapo

source/test2.d

@@ -0,0 +1,95 @@
+import libsql_deimos;
+import core.stdc.stdio;
+import std.string;
+
+@("Persons")
+unittest {
+	libsql_database_t db;
+	libsql_connection_t conn;
+	char *err = null;
+	int retval = 0;
+	libsql_rows_t rows;
+	libsql_row_t row;
+	int num_cols;
+
+	
+  retval = libsql_open_ext(":memory:", &db, &err);
+  if (retval != 0) {
+		fprintf( core.stdc.stdio.stderr, "%s\n", err);
+	}
+  assert(retval == 0);
+
+  retval = libsql_connect(db, &conn, &err);
+  if (retval != 0) {
+		fprintf( core.stdc.stdio.stderr, "%s\n", err);
+	}
+  assert(retval == 0);
+
+ const string create_table="CREATE TABLE Persons(
+	Name TEXT,
+	Age INTEGER
+	);";
+
+  retval = libsql_execute(conn,toStringz(create_table), &err);
+  assert(retval == 0);
+
+	const insert_person="INSERT INTO Persons VALUES ('Paul',20);";
+
+	retval = libsql_execute(conn,toStringz(insert_person), &err);
+  if (retval != 0) {
+		fprintf( core.stdc.stdio.stderr, "%s\n", err);
+	}
+  assert(retval == 0);
+  
+ const insert_person2="INSERT INTO Persons VALUES ('Laura',30)";
+
+	retval = libsql_execute(conn,toStringz(insert_person2), &err);
+  if (retval != 0) {
+		fprintf( core.stdc.stdio.stderr, "%s\n", err);
+	}
+  assert(retval == 0);
+
+
+	retval = libsql_query(conn, "SELECT * FROM Persons;", &rows, &err);
+	if (retval != 0) {
+		fprintf( core.stdc.stdio.stderr, "%s\n", err);
+	}
+	assert(retval == 0);
+
+	num_cols = libsql_column_count(rows);
+	//fprintf( core.stdc.stdio.stderr, "num_colds =%d\n", num_cols);
+	assert(num_cols==2);
+
+	while ((retval = libsql_next_row(rows, &row, &err)) == 0) {
+		if (!err && !row) {
+			break;
+		}
+		for (int col = 0; col < num_cols; col++) {
+			if (col==0) {
+			  char* value;
+				retval = libsql_get_string(row, col, &value, &err);
+				if (retval != 0) {
+					fprintf(core.stdc.stdio.stderr, "%s\n", err);
+				} else {
+					printf("%s\t", value);
+				}
+			} else if (col==1) {
+				long value;
+				retval = libsql_get_int(row, col, &value, &err);
+				if (retval != 0) {
+					fprintf(core.stdc.stdio.stderr, "%s\n", err);
+				} else {
+					printf("%lld\n", value);
+				}
+			}
+ 		 assert(retval == 0);
+		}
+		err = null;
+	}
+ assert(retval == 0);
+
+ quit:
+	libsql_free_rows(rows);
+	libsql_disconnect(conn);
+  libsql_close(db);
+}