update and fix testcases

Author: aminroosta

tests/boost_optional.cc

@@ -16,8 +16,7 @@ void insert(database& db, bool is_null) {
 }
 
 void select(database& db, bool should_be_null) {
-	db << "select id,val from test" >> [&](long long id, boost::optional<int> val) {
-		id = id;
+	db << "select id,val from test" >> [&](long long, boost::optional<int> val) {
 		if(should_be_null) {
 			if(val) exit(EXIT_FAILURE);
 		} else {

tests/nullptr_uniqueptr.cc

@@ -21,7 +21,9 @@ int main() {
       }
 
       cout << "age:" << *age_p << " name:" << *name_p << " img:";
-      for(auto i : *img_p) cout << i << ","; cout << endl;
+      for(auto i : *img_p)
+        cout << i << ",";
+      cout << endl;
     };
 
     db << "select age,name,img from tbl where id = 2" >> [](unique_ptr<int> age_p, unique_ptr<string> name_p, unique_ptr<vector<int>> img_p) {

tests/readme_example.cc

@@ -30,7 +30,7 @@ int main() {
 			<< u"bob"
 			<< 83.25;
 
-		int age = 21;
+		int age = 22;
 		float weight = 68.5;
 		string name = "jack";
 		db << u"insert into user (age,name,weight) values (?,?,?);" // utf16 query string
@@ -43,9 +43,11 @@ int main() {
 		// slects from user table on a condition ( age > 18 ) and executes
 		// the lambda for each row returned .
 		db << "select age,name,weight from user where age > ? ;"
-			<< 18
-			>> [&](int age, string name, double weight) {
-			cout << age << ' ' << name << ' ' << weight << endl;
+			<< 21
+			>> [&](int _age, string _name, double _weight) {
+				if(_age != age || _name != name) 
+					exit(EXIT_FAILURE);
+				cout << _age << ' ' << _name << ' ' << _weight << endl;
 		};
 
 		// selects the count(*) from user table