dbase 0.7.0

extern crate dbase;
#[cfg(feature = "serde")]
extern crate serde_derive;

#[cfg(feature = "serde")]
mod serde_tests {
    use std::convert::TryFrom;
    use std::io::Cursor;

    use serde_derive::{Deserialize, Serialize};

    use dbase::{ErrorKind, FieldName, ReadableRecord, Reader, TableWriterBuilder, WritableRecord};
    use std::fmt::Debug;

    fn write_read_compare<R>(records: &Vec<R>, writer_builder: TableWriterBuilder)
    where
        R: WritableRecord + ReadableRecord + Debug + PartialEq,
    {
        let mut dst = Cursor::new(Vec::<u8>::new());
        let writer = writer_builder.build_with_dest(&mut dst);

        writer.write_records(records).unwrap();
        dst.set_position(0);

        let mut reader = Reader::new(dst).unwrap();
        let read_records = reader.read_as::<R>().unwrap();

        assert_eq!(&read_records, records);
    }

    #[derive(Serialize, Deserialize, Clone, PartialEq, Debug)]
    struct DeserializableRecord {
        name: String,
        price: f64,
        date: dbase::Date,
        available: bool,
        score: f32,
    }

    #[test]
    fn test_serde_roundtrip() {
        let records = vec![DeserializableRecord {
            name: "Holy Fawn".to_string(),
            price: 10.2,
            date: dbase::Date::new(1, 1, 2012),
            available: true,
            score: 9.87,
        }];

        let writer_builder = TableWriterBuilder::new()
            .add_character_field(FieldName::try_from("name").unwrap(), 25)
            .add_numeric_field(FieldName::try_from("price").unwrap(), 7, 4)
            .add_date_field(FieldName::try_from("date").unwrap())
            .add_logical_field(FieldName::try_from("available").unwrap())
            .add_float_field(FieldName::try_from("score").unwrap(), 7, 5);

        write_read_compare(&records, writer_builder);
    }

    #[derive(Serialize, Deserialize, Clone, PartialEq, Debug)]
    struct DeserializableStation {
        name: String,
        marker_col: Option<String>,
        marker_symbol: String,
        line: Option<String>,
    }

    #[test]
    fn test_serde_stations_optional() {
        let mut reader = dbase::Reader::from_path("tests/data/stations_optional.dbf").unwrap();
        let records = reader.read_as::<DeserializableStation>().unwrap();
        assert_eq!(
            records[3],
            DeserializableStation {
                name: String::from("Judiciary Sq"),
                marker_col: None,
                marker_symbol: "rail-metro".to_string(),
                line: Some("blue".to_string())
            }
        );
    }

    #[test]
    fn test_serde_optional_types() {
        #[derive(Serialize, Deserialize, PartialEq, Debug)]
        struct Record {
            opt_bool: Option<bool>,
        }

        let writer_builder =
            TableWriterBuilder::new().add_logical_field(FieldName::try_from("opt_bool").unwrap());

        let records = vec![
            Record {
                opt_bool: Some(true),
            },
            Record {
                opt_bool: Some(false),
            },
            Record { opt_bool: None },
        ];
        write_read_compare(&records, writer_builder);
    }

    #[test]
    fn test_serde_tuple() {
        let writer_builder = TableWriterBuilder::new()
            .add_character_field(FieldName::try_from("Name").unwrap(), 50)
            .add_numeric_field(FieldName::try_from("Price").unwrap(), 20, 6);

        let records = vec![
            ("Companion 50".to_string(), 525.32f64),
            ("Companion 20".to_string(), 125.99f64),
        ];
        write_read_compare(&records, writer_builder);
    }

    #[test]
    fn test_serde_tuple_struct() {
        #[derive(Serialize, Deserialize, Debug, PartialEq)]
        struct Record(bool, dbase::Date);

        let writer_builder = TableWriterBuilder::new()
            .add_logical_field(FieldName::try_from("bool").unwrap())
            .add_date_field(FieldName::try_from("date").unwrap());

        let records = vec![
            Record(true, dbase::Date::new(12, 10, 2012)),
            Record(false, dbase::Date::new(12, 11, 2005)),
        ];
        write_read_compare(&records, writer_builder);
    }

    #[test]
    fn test_serde_new_type_struct() {
        #[derive(Serialize, Deserialize, Debug, PartialEq)]
        struct Name(String);

        let writer_builder = TableWriterBuilder::new()
            .add_character_field(FieldName::try_from("character").unwrap(), 50);

        let records = vec![Name("Sinmara".to_string())];
        write_read_compare(&records, writer_builder);
    }

    #[test]
    fn test_serialize_not_enough_fields() {
        #[derive(Serialize)]
        struct Record {
            yes: bool,
        }

        let records = vec![Record { yes: false }];

        let writer = TableWriterBuilder::new()
            .add_logical_field(FieldName::try_from("yes").unwrap())
            .add_character_field(FieldName::try_from("not present").unwrap(), 50)
            .build_with_dest(Cursor::new(Vec::<u8>::new()));

        let error = writer
            .write_records(&records)
            .expect_err("We expected an Error");
        assert!(matches!(error.kind(), ErrorKind::NotEnoughFields));
    }

    #[test]
    fn test_serialize_not_too_many_fields() {
        #[derive(Serialize)]
        struct Record {
            yes: bool,
        }

        let records = vec![Record { yes: false }];

        let writer = TableWriterBuilder::new().build_with_dest(Cursor::new(Vec::<u8>::new()));

        let error = writer
            .write_records(&records)
            .expect_err("Expected an error");

        assert!(matches!(error.kind(), ErrorKind::TooManyFields));
    }

    #[test]
    fn test_serde_fox_pro_types() {
        #[derive(Serialize, Deserialize, PartialEq, Debug)]
        struct Record {
            datetime: dbase::DateTime,
            currency: f64,
            double: f64,
            integer: i32,
        }

        let writer_builder = TableWriterBuilder::new()
            .add_datetime_field(FieldName::try_from("datetime").unwrap())
            .add_currency_field(FieldName::try_from("currency").unwrap())
            .add_double_field(FieldName::try_from("double").unwrap())
            .add_integer_field(FieldName::try_from("integer").unwrap());

        let records = vec![Record {
            datetime: dbase::DateTime::new(
                dbase::Date::new(12, 5, 2130),
                dbase::Time::new(15, 52, 12),
            ),
            currency: 79841.156846,
            double: 976114.1846,
            integer: -15315,
        }];

        write_read_compare(&records, writer_builder);
    }
}