ooxml-pml 0.1.0

//! Error-handling tests for malformed / adversarial PPTX inputs.
//!
//! These tests verify that the PML reader produces useful errors rather than
//! panicking when given invalid data.

use std::io::Cursor;

type Pres = ooxml_pml::Presentation<Cursor<Vec<u8>>>;

/// Feeding random bytes (not a ZIP) should produce an error, not a panic.
#[test]
fn test_not_a_zip() {
    let garbage = vec![0u8; 256];
    let result = Pres::from_reader(Cursor::new(garbage));
    assert!(result.is_err(), "should fail on non-ZIP input");
}

/// An empty byte stream should fail gracefully.
#[test]
fn test_empty_input() {
    let result = Pres::from_reader(Cursor::new(Vec::new()));
    assert!(result.is_err(), "should fail on empty input");
}

/// A valid ZIP with no OOXML parts should fail.
#[test]
fn test_empty_zip() {
    let mut buf = Cursor::new(Vec::new());
    {
        let _writer = zip::ZipWriter::new(&mut buf);
    }
    let bytes = buf.into_inner();
    let result = Pres::from_reader(Cursor::new(bytes));
    assert!(result.is_err(), "should fail on empty ZIP");
}

/// A ZIP containing [Content_Types].xml but no presentation.xml.
#[test]
fn test_missing_presentation_xml() {
    let mut buf = Cursor::new(Vec::new());
    {
        use std::io::Write;
        let mut writer = zip::ZipWriter::new(&mut buf);
        let options = zip::write::SimpleFileOptions::default();
        writer.start_file("[Content_Types].xml", options).unwrap();
        writer
            .write_all(
                br#"<?xml version="1.0" encoding="UTF-8"?>
<Types xmlns="http://schemas.openxmlformats.org/package/2006/content-types">
  <Default Extension="rels" ContentType="application/vnd.openxmlformats-package.relationships+xml"/>
  <Default Extension="xml" ContentType="application/xml"/>
</Types>"#,
            )
            .unwrap();
        writer.finish().unwrap();
    }
    let bytes = buf.into_inner();
    let result = Pres::from_reader(Cursor::new(bytes));
    assert!(
        result.is_err(),
        "should fail when presentation.xml is missing"
    );
}