use super::XMLBuilder;
use super::XmlEvent;
use std::io::Write;

impl<W: Write> XMLBuilder<W> {
    // Build RelationShips element
    // i.e. <Relationships xmlns="http://schemas.openxmlformats.org/package/2006/relationships">
    open!(open_relationships, "Relationships", "xmlns");

    // Build Relationship
    closed!(relationship, "Relationship", "Id", "Type", "Target");
    closed!(
        relationship_with_mode,
        "Relationship",
        "Id",
        "Type",
        "Target",
        "TargetMode"
    );
}

#[cfg(test)]
mod tests {
    use super::*;
    use std::str;
    use xml::writer::Result;

    #[test]
    fn test_open_relationships() -> Result<()> {
        let b = XMLBuilder::new(Vec::new());
        let r = b
            .open_relationships("http://example")?
            .plain_text("child")?
            .close()?
            .into_inner()?
            .into_inner();
        assert_eq!(
            str::from_utf8(&r).unwrap(),
            r#"<Relationships xmlns="http://example">child</Relationships>"#
        );
        Ok(())
    }

    #[test]
    fn test_relationship() -> Result<()> {
        let b = XMLBuilder::new(Vec::new());
        let r = b
            .relationship("rId1", "http://example", "core.xml")?
            .into_inner()?
            .into_inner();
        assert_eq!(
            str::from_utf8(&r).unwrap(),
            r#"<Relationship Id="rId1" Type="http://example" Target="core.xml" />"#
        );
        Ok(())
    }
}