[test] add unit test of alexbrainman#178

mssql_test.go

@@ -1917,3 +1917,69 @@ IF @@ROWCOUNT = 0
 		t.Fatal(err)
 	}
 }
+
+// https://github.com/alexbrainman/odbc/issues/178
+func TestMSSQLIssue178(t *testing.T) {
+	db, _, err := mssqlConnect()
+	if err != nil {
+		t.Fatal(err)
+	}
+	defer func() {
+		// not checking resources usage here, because these are
+		// unpredictable due to use of goroutines.
+		err := db.Close()
+		if err != nil {
+			t.Fatalf("error closing DB: %v", err)
+		}
+	}()
+
+	var langNames = map[string]string{
+		"zh_tw": "張三",
+		"zh_cn": "张三",
+	}
+
+	db.Exec("drop table dbo.temp")
+	exec(t, db, "create table dbo.temp (lang char(5), name varchar(4))")
+
+	func() {
+		// insert people names
+		s, err := db.Prepare("insert into dbo.temp (lang, name) values (?, ?)")
+		if err != nil {
+			t.Fatal(err)
+		}
+		defer s.Close()
+		defer exec(t, db, "drop table dbo.temp")
+
+		for lang, name := range langNames {
+			_, err := s.Exec(lang, name)
+			if err != nil {
+				t.Fatal(err)
+			}
+		}
+
+		// query inserted data and compare with langPeople
+		rows, err := db.Query("select lang, name from dbo.temp")
+		if err != nil {
+			t.Fatalf("Query: %v", err)
+		}
+		defer rows.Close()
+
+		for rows.Next() {
+			var rowLang, rowName string
+			if err = rows.Scan(&rowLang, &rowName); err != nil {
+				t.Fatalf("Scan: %v", err)
+			}
+			name, ok := langNames[rowLang]
+			if !ok {
+				t.Fatalf("can't find people name by lang=: %v", rowLang)
+			}
+			if name != rowName {
+				t.Fatalf("people name missmatch, %v != %v", rowName, name)
+			}
+		}
+		err = rows.Err()
+		if err != nil {
+			t.Fatal(err)
+		}
+	}()
+}