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vectorcraft/crates/eps/src/import/tests_native.rs
T
Matthew FarrowandClaude Sonnet 5.5 2dc738b816 EPS import: spell out abbreviated styles, and keep a line the page draws in pieces as one text
- A PostScript font name's shortened style words (Md, Lt, Bd, XBd, Cn, It, ...)
  weren't matched to installed faces, so AkzidenzGroteskPro-Md came in as
  the condensed face. They are spelled out before the face is looked up.
- A line the page draws in pieces (around kerning) came in as several text
  objects ("swe", "ep"); the pieces that add up to one line of the file's
  text object now join into one, with the line's spaces between them.

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>
2026-10-09 03:49:49 -04:00

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//! The layers of an Illustrator EPS and `.ai`: read from the editing copy of the art the file
//! carries (see `native`). The files here are made from the public specification's operators.
use vectorcraft_doc::{Document, LayerColor, Node, NodeKind};
use crate::import::import;
/// `data` as ASCII85, up to the `~>`.
fn ascii85(data: &[u8]) -> String {
let mut out = String::new();
for chunk in data.chunks(4) {
let v = chunk.iter().enumerate().fold(0u32, |v, (i, b)| v | u32::from(*b) << (24 - 8 * i));
let mut d = [0u8; 5];
let mut x = v;
for c in d.iter_mut().rev() {
*c = (x % 85) as u8 + b'!';
x /= 85;
}
out.extend(d.iter().take(chunk.len() + 1).map(|c| char::from(*c)));
}
out.push_str("~>");
out
}
fn zstd(data: &str) -> Vec<u8> {
ruzstd::encoding::compress_to_vec(data.as_bytes(), ruzstd::encoding::CompressionLevel::Fastest)
}
/// The editing copy of a file with `layers` (made by [`layer`]), 100 × 100 points.
fn native(layers: &str) -> String {
format!(
"%!PS-Adobe-3.0 \n%%BoundingBox: 0 0 100 100\n%%HiResBoundingBox: 0 0 100 100\n%AI3_Cropmarks: 0 0 100 100\n%AI5_NumLayers: 2\n{layers}%%Trailer\n"
)
}
/// A layer as the format writes it.
fn layer(name: &str, visible: bool, body: &str) -> String {
format!("%AI5_BeginLayer\n{} 1 1 1 0 0 1 0 79 128 255 0 50 0 Lb\n({name}) Ln\n{body}\nLB\n%AI5_EndLayer--\n", u8::from(visible))
}
/// A yellow square of 4 points at (`x`, `y`) in the format's operators.
fn square(x: u32, y: u32) -> String {
format!("0 0 1 0 k\n{x} {y} m\n{} {y} L\n{} {} L\n{x} {} L\nf", x + 4, x + 4, y + 4, y + 4)
}
/// An EPS whose page draws `page` and whose private data is `native`.
fn eps(page: &str, native: &str) -> Vec<u8> {
let stream = ascii85(&zstd(native));
let lines: Vec<String> = stream.as_bytes().chunks(60).map(|c| format!("%{}", String::from_utf8_lossy(c))).collect();
format!(
"%!PS-Adobe-3.0 EPSF-3.0\n%%BoundingBox: 0 0 100 100\n%%EndComments\n{page}\nshowpage\n%%EOF\n%AI9_PrivateDataBegin\n%AI24_DataStream\n{}\n%AI9_PrivateDataEnd\n",
lines.join("\n")
)
.into_bytes()
}
/// The page's drawing of the square at (`x`, `y`).
fn page_square(x: u32, y: u32) -> String {
format!("0 0 1 0 setcmykcolor {x} {y} moveto {} {y} lineto {} {} lineto {x} {} lineto closepath fill", x + 4, x + 4, y + 4, y + 4)
}
fn names(d: &Document) -> Vec<String> {
d.layers.iter().map(|l| l.name.clone().unwrap_or_default()).collect()
}
fn kinds(l: &Node) -> Vec<&'static str> {
l.children()
.into_iter()
.flatten()
.map(|n| match &n.kind {
NodeKind::Group { clip: true, children } => {
["clip[0]", "clip[1]", "clip[2]", "clip[3]"].get(children.len()).copied().unwrap_or("clip[many]")
}
NodeKind::Group { children, .. } => {
["group[0]", "group[1]", "group[2]", "group[3]"].get(children.len()).copied().unwrap_or("group[many]")
}
NodeKind::Compound { children, .. } => {
["compound[0]", "compound[1]", "compound[2]", "compound[3]"].get(children.len()).copied().unwrap_or("compound[many]")
}
NodeKind::Path { clipping: true, .. } => "clippath",
NodeKind::Path { .. } => "path",
NodeKind::Text(_) => "text",
_ => "other",
})
.collect()
}
#[test]
fn layers_come_in_with_their_names_colours_and_hidden_state() {
let art = native(&(layer("Back", true, &square(10, 10)) + &layer("Hidden", false, &square(50, 50))));
let r = import(&eps(&page_square(10, 10), &art)).unwrap();
let d = &r.document;
assert_eq!(names(d), ["Back", "Hidden"], "{:?}", r.warnings);
assert_eq!([d.layers[0].visible, d.layers[1].visible], [true, false]);
// What is on a hidden layer stays: the page doesn't have it.
assert_eq!(kinds(&d.layers[1]), ["path"]);
assert!(matches!(&d.layers[0].kind, NodeKind::Layer { color: LayerColor::Custom([79, 128, 255]), .. }));
assert!(r.warnings.is_empty(), "{:?}", r.warnings);
// The page is where the page's art was.
let b = d.layers[0].children().unwrap()[0].visual_bounds().unwrap();
assert!((b.x0 - 10.0).abs() < 1e-6 && (b.y0 - 86.0).abs() < 1e-6, "{b:?}");
}
#[test]
fn sublayers_groups_compounds_clip_groups_and_hidden_objects_come_in() {
let body = [
"u".to_string(),
square(10, 10),
"U".into(),
"*u".into(),
square(20, 10),
square(30, 10),
"*U".into(),
// A clipping group: its objects, then its clip path.
"q".into(),
square(40, 10),
"50 10 m 60 10 L 60 20 L 50 20 L h W f".into(),
"Q".into(),
// Hidden until the next `Xw`.
"1 Xw".into(),
"u".into(),
square(70, 10),
"U".into(),
"0 Xw".into(),
]
.join("\n");
let sub = layer("Inner", true, &square(80, 10));
let art = native(&layer("Outer", true, &format!("{body}\n{sub}")));
// The page has what shows: the clip group's square is outside its clip path.
let page = [10, 20, 30, 80].map(|x| page_square(x, 10)).join("\n");
let r = import(&eps(&page, &art)).unwrap();
let outer = &r.document.layers[0];
assert_eq!(kinds(outer), ["group[1]", "compound[2]", "clip[2]", "group[1]", "other"]);
let children = outer.children().unwrap();
assert!(children[0].visible && !children[3].visible, "the hidden object is hidden, not left out");
// The clip path comes first in its group.
assert!(matches!(children[2].children().unwrap()[0].kind, NodeKind::Path { clipping: true, .. }));
// The sublayer is a layer of the layer.
assert!(matches!(&children[4].kind, NodeKind::Layer { .. }));
assert_eq!(children[4].name.as_deref(), Some("Inner"));
}
#[test]
fn what_the_layers_cant_say_keeps_the_page_when_it_shows_and_not_when_it_doesnt() {
// A gradient (`Bg`) on a layer that shows: the layers would draw it as a flat colour.
let shown = native(&layer("Art", true, &format!("{}\n0 0 0 1 0 0 Bg", square(10, 10))));
let r = import(&eps(&page_square(10, 10), &shown)).unwrap();
assert_eq!(names(&r.document), ["Layer 1"]);
assert!(r.warnings.iter().any(|w| w.contains("layers weren't read") && w.contains("`Bg`")), "{:?}", r.warnings);
// On a hidden layer it only costs that layer's look.
let hidden = native(&(layer("Art", true, &square(10, 10)) + &layer("Old", false, "0 0 0 1 0 0 Bg")));
let r = import(&eps(&page_square(10, 10), &hidden)).unwrap();
assert_eq!(names(&r.document), ["Art", "Old"]);
assert!(r.warnings.iter().any(|w| w.contains("hidden layers have art this can't read")), "{:?}", r.warnings);
}
#[test]
fn text_and_its_strokes_come_from_the_page_into_the_layer_of_its_text_object() {
let page = format!(
"{}\n/Helvetica findfont 12 scalefont setfont 10 50 moveto (Hi) show\n10 50 moveto (Hi) false charpath 2 setlinewidth stroke",
page_square(10, 10)
);
let words = layer("Words", true, "/AI11Text :\n0 /FreeUndo ,\n;\n\n0 0 Xd");
let art = native(&(layer("Art", true, &square(10, 10)) + &words));
let r = import(&eps(&page, &art)).unwrap();
assert_eq!(names(&r.document), ["Art", "Words"], "{:?}", r.warnings);
assert_eq!(kinds(&r.document.layers[0]), ["path"]);
// The text and the path of its stroke, together where the text object is.
let group = &r.document.layers[1].children().unwrap()[0];
assert_eq!(kinds(group), ["text", "path"], "{:?}", r.warnings);
assert!(r.warnings.is_empty(), "{:?}", r.warnings);
}
#[test]
fn a_damaged_editing_copy_leaves_the_page() {
// Not ASCII85, ASCII85 of something that isn't Zstandard, Zstandard of something that isn't art.
let plain = |data: &str| {
let lines = format!("%{}", data);
format!(
"%!PS-Adobe-3.0 EPSF-3.0\n%%BoundingBox: 0 0 100 100\n%%EndComments\n{}\nshowpage\n%%EOF\n%AI9_PrivateDataBegin\n%AI24_DataStream\n{lines}\n%AI9_PrivateDataEnd\n",
page_square(10, 10)
)
.into_bytes()
};
for bytes in [plain("this is not ascii85 {{{~>"), plain(&ascii85(b"not zstandard at all")), eps(&page_square(10, 10), "nothing of the art here")]
{
let r = import(&bytes).unwrap();
assert_eq!(names(&r.document), ["Layer 1"], "{:?}", r.warnings);
}
}
/// The `.ai`'s editing data: its marker, then the Zstandard stream.
fn private(native: &str) -> Vec<u8> {
[b"%AI24_ZStandard_Data".as_slice(), &zstd(native)].concat()
}
/// A page of 100 × 100 with a square at (`x`, `y`) in one layer, as a PDF part would give.
fn pdf_part(x: f64, y: f64) -> Document {
let mut d = Document::new(100.0, 100.0);
let id = d.alloc_id();
let path = vectorcraft_geom::shapes::rectangle(vectorcraft_geom::Rect::new(x, y, x + 4.0, y + 4.0));
let paint = vectorcraft_color::Paint::solid(vectorcraft_color::Color::cmyk(0.0, 0.0, 1.0, 0.0));
let item = vectorcraft_doc::AppearanceItem::Fill(vectorcraft_doc::FillLayer::new(paint));
let n = Node::path(id, path, vectorcraft_doc::Appearance { items: vec![item], ..Default::default() });
let layer = d.layers[0].id;
d.insert(Some(layer), 0, n).unwrap();
d
}
#[test]
fn an_ai_file_gets_its_layers_and_the_art_outside_its_artboard() {
// A square on the artboard, and one above it (the artboard is y 0 to 100 here).
let art = native(&(layer("Jig", true, &square(10, 10)) + &layer("Parts", true, &square(30, 110)) + &layer("Old", false, &square(60, 60))));
let (d, warnings) = crate::layered_ai(&private(&art), pdf_part(10.0, 86.0), vec!["a note".into()]);
assert_eq!(names(&d), ["Jig", "Parts", "Old"], "{warnings:?}");
assert_eq!(warnings, ["a note"], "nothing else to say");
let above = d.layers[1].children().unwrap()[0].visual_bounds().unwrap();
assert!(above.y1 <= 0.0 + 1e-6, "the art above the artboard is kept, outside it: {above:?}");
assert!(!d.layers[2].visible);
}
#[test]
fn an_ai_file_that_cant_be_read_through_its_editing_data_keeps_its_pdf_part() {
let pdf = pdf_part(10.0, 86.0);
// No editing data this reads.
let (d, w) = crate::layered_ai(b"nothing", pdf.clone(), vec![]);
assert_eq!(d.layers.len(), pdf.layers.len());
assert!(w.is_empty());
// Editing data that isn't for this page.
let other = native(&layer("Jig", true, &square(10, 10))).replace("%AI3_Cropmarks: 0 0 100 100", "%AI3_Cropmarks: 0 0 50 50");
let (d, w) = crate::layered_ai(&private(&other), pdf.clone(), vec![]);
assert_eq!(names(&d), names(&pdf));
assert!(w.iter().any(|w| w.contains("different page")), "{w:?}");
}
#[test]
fn a_gray_is_the_black_ink_as_in_a_cmyk_document() {
// `g` is a gray: 0.25 is 75 % of the black ink, as the page's own CMYK black says.
let art = native(&layer("Art", true, "0.25 g\n10 10 m\n14 10 L\n14 14 L\n10 14 L\nf"));
let page = "0 0 0 0.75 setcmykcolor 10 10 moveto 14 10 lineto 14 14 lineto 10 14 lineto closepath fill";
let r = import(&eps(page, &art)).unwrap();
assert_eq!(names(&r.document), ["Art"], "{:?}", r.warnings);
let fill = r.document.layers[0].children().unwrap()[0].appearance.fill().and_then(|f| f.paint.color());
assert_eq!(fill, Some(vectorcraft_color::Color::cmyk(0.0, 0.0, 0.0, 0.75)));
assert!(r.warnings.is_empty(), "{:?}", r.warnings);
}
/// `native` as a CS-era file keeps it: zlib, under `%AI9_DataStream`.
fn older_eps(page: &str, native: &str) -> Vec<u8> {
use std::io::Write;
let mut z = flate2::write::ZlibEncoder::new(vec![], flate2::Compression::default());
z.write_all(native.as_bytes()).unwrap();
let stream = ascii85(&z.finish().unwrap());
let lines: Vec<String> = stream.as_bytes().chunks(60).map(|c| format!("%{}", String::from_utf8_lossy(c))).collect();
format!(
"%!PS-Adobe-3.0 EPSF-3.0\n%%BoundingBox: 0 0 100 100\n%%EndComments\n{page}\nshowpage\n%%EOF\n%AI9_PrivateDataBegin\n%AI9_DataStream\n{}\n%AI9_PrivateDataEnd\n",
lines.join("\n")
)
.into_bytes()
}
#[test]
fn files_from_before_zstandard_give_their_layers_too() {
let art = native(&(layer("Back", true, &square(10, 10)) + &layer("Hidden", false, &square(50, 50))));
let r = import(&older_eps(&page_square(10, 10), &art)).unwrap();
assert_eq!(names(&r.document), ["Back", "Hidden"], "{:?}", r.warnings);
assert_eq!([r.document.layers[0].visible, r.document.layers[1].visible], [true, false]);
assert!(r.warnings.is_empty(), "{:?}", r.warnings);
}
#[test]
fn custom_colours_open_paths_and_planar_group_marks_are_read() {
// `x` and `X` are the custom colours of a fill and a stroke (four inks, a name, a tint), `Xx` one
// with its Lab values; `H` ends an open path, `XP` marks a group the app made from a planar map.
let body = "0.1 0.2 0.3 0.4 (Spot) 0 x\n0 0 0 1 (Edge) 0 X\n10 10 m\n14 10 L\n14 14 L\n10 14 L\nf\n\
0.8 0.1 0 0 62.7 -28 -42 (Blue) 0 2 Xx\n(Adobe Planar Group) 1 0 0 XP\n20 20 m\n24 20 L\n24 24 L\nH\nF";
let r = import(&older_eps(
"0 0 0 0 setcmykcolor 10 10 moveto 14 10 lineto 14 14 lineto 10 14 lineto closepath fill",
&native(&layer("Art", true, body)),
))
.unwrap();
assert_eq!(names(&r.document), ["Art"], "{:?}", r.warnings);
assert_eq!(kinds(&r.document.layers[0]), ["path", "path"]);
}
/// A text document of `stories` (each as the text, its alignment code, its anchor and the frame's
/// translation, and the start of its first line from the anchor), one font and a 14 point default.
/// A story: its text, alignment code, anchor, frame translation and first line's start.
type Story<'a> = (&'a str, u8, (f64, f64), (f64, f64), f64);
fn text_document(stories: &[Story<'_>]) -> String {
let story = |(text, align, anchor, _t, start): &Story<'_>| {
let n = text.chars().count();
format!(
"<< /0 << /0 ({text}) /5 << /0 [ << /0 << /0 << /0 () /5 << /0 {align} >> /6 0 >> >> /1 {n} >> ] >> \
/6 << /0 [ << /0 << /0 << /0 () /5 0 /6 << /0 0 /1 14.0 /53 << /99 /CAITextPaint /0 << /0 2 /1 [ 1.0 0.0 1.0 0.0 0.0 ] >> >> >> >> >> /1 {n} >> ] >> >> \
/1 << /0 [ << /0 0 >> ] /2 [ << /99 /PC /6 [ << /99 /F /0 << /0 [ {} {} ] >> /6 [ << /99 /R /6 [ << /99 /R /6 [ << /99 /L /6 [ \
<< /99 /S /0 << /0 [ {start} 0.0 ] >> /15 << /0 {n} >> >> ] >> ] >> ] >> ] >> ] >> ] >> >>",
anchor.0, anchor.1
)
};
let frame =
|(_, _, _, t, _): &(&str, u8, (f64, f64), (f64, f64), f64)| format!("<< /0 << /0 [ 0 0 ] /2 << /2 [ 1 0 0 1 {} {} ] >> >> >>", t.0, t.1);
format!(
"/0 << /1 << /0 [ << /0 << /0 << /0 (Helvetica) >> >> >> ] >> /8 << /0 [ {} ] >> >>\n/1 << /1 [ {} ] /2 << /1 12.0 >> >>\n",
stories.iter().map(frame).collect::<Vec<_>>().join(" "),
stories.iter().map(story).collect::<Vec<_>>().join(" ")
)
}
/// The editing copy of a 100 × 100 file with `layers` and the text `document`; its template box is
/// centred at (50, 50).
fn native_with_text(layers: &str, document: &str) -> String {
let lines: Vec<String> = ascii85(document.as_bytes()).as_bytes().chunks(60).map(|c| format!("%{}", String::from_utf8_lossy(c))).collect();
format!(
"%!PS-Adobe-3.0 \n%%BoundingBox: 0 0 100 100\n%%HiResBoundingBox: 0 0 100 100\n%AI3_Cropmarks: 0 0 100 100\n%AI3_TemplateBox: 50 50 50 50\n\
%AI5_NumLayers: 2\n{layers}%AI11_BeginTextDocument\n/AI11TextDocument : /ASCII85Decode ,\n{}\n%AI11_EndTextDocument\n%%Trailer\n",
lines.join("\n")
)
}
/// A text object of story `story`, as the layers hold it.
fn text_object(story: u32) -> String {
format!("/AI11Text :\n0 /FreeUndo ,\n0 /FrameIndex ,\n{story} /StoryIndex ,\n2 /TextAntialiasing ,\n;\n")
}
fn text_of(l: &Node) -> Vec<&vectorcraft_doc::TextObject> {
l.children().into_iter().flatten().filter_map(|n| if let NodeKind::Text(t) = &n.kind { Some(&**t) } else { None }).collect()
}
#[test]
fn type_on_a_hidden_layer_comes_from_the_text_document() {
// Canvas centre 8191.5 is the template box's centre (50, 50): the anchor is 8.5 right of it and
// 11.5 above it, so at (58.5, 61.5) in the art, which is 38.5 down the page.
let doc = text_document(&[("Hi there\r", 0, (8200.0, 8180.0), (0.0, 0.0), 0.0), ("Mid\r", 2, (8191.5, 8191.5), (0.0, 0.0), -10.0)]);
let art = native_with_text(&(layer("Back", true, &square(10, 10)) + &layer("Spare", false, &(text_object(0) + &text_object(1)))), &doc);
let r = import(&eps(&page_square(10, 10), &art)).unwrap();
assert_eq!(names(&r.document), ["Back", "Spare"], "{:?}", r.warnings);
let spare = &r.document.layers[1];
assert!(!spare.visible);
let texts = text_of(spare);
assert_eq!(texts.len(), 2, "{:?}", r.warnings);
let [a, b] = [texts[0], texts[1]];
assert_eq!(a.plain_text(), "Hi there");
let [.., e, f] = a.xf.as_coeffs();
assert!((e - 58.5).abs() < 1e-6 && (f - 38.5).abs() < 1e-6, "{:?}", a.xf);
assert_eq!(a.runs[0].style.size, 14.0);
assert_eq!(a.para.justify, vectorcraft_doc::Justify::Left);
// Centred type is anchored at its middle.
assert_eq!(b.para.justify, vectorcraft_doc::Justify::Center);
let [.., e, f] = b.xf.as_coeffs();
assert!((e - 50.0).abs() < 1e-6 && (f - 50.0).abs() < 1e-6, "{:?}", b.xf);
assert!(!r.warnings.iter().any(|w| w.contains("couldn't be read")), "{:?}", r.warnings);
}
#[test]
fn type_with_a_frame_it_cant_read_is_left_out_with_a_note() {
// A story whose frame says more than a matrix (a text area, say) isn't guessed at.
let mut doc = text_document(&[("Area\r", 0, (8200.0, 8180.0), (0.0, 0.0), 0.0)]);
doc = doc.replace("/2 << /2 [ 1 0 0 1 0 0 ] >>", "/2 << /2 [ 1 0 0 1 0 0 ] /7 1 >>");
let art = native_with_text(&(layer("Back", true, &square(10, 10)) + &layer("Spare", false, &text_object(0))), &doc);
let r = import(&eps(&page_square(10, 10), &art)).unwrap();
assert!(text_of(&r.document.layers[1]).is_empty());
assert!(r.warnings.iter().any(|w| w.contains("1 text objects on hidden layers")), "{:?}", r.warnings);
assert!(crate::is_loss(r.warnings.iter().find(|w| w.contains("couldn't be read")).unwrap()));
}
#[test]
fn shown_type_keeps_the_pages_and_type_off_the_page_comes_from_the_text_document() {
// Story 0 is where the page draws "Hi there"; story 1 is off the page, so the page has nothing of it.
let doc = text_document(&[("Hi there\r", 0, (8200.0, 8180.0), (0.0, 0.0), 0.0), ("Away\r", 0, (8300.0, 8180.0), (0.0, 0.0), 0.0)]);
let art = native_with_text(&layer("Art", true, &(text_object(0) + &text_object(1))), &doc);
let page = "0 0 0 1 setcmykcolor /Helvetica findfont 14 scalefont setfont 58.5 61.5 moveto (Hi there) show";
let r = import(&eps(page, &art)).unwrap();
assert_eq!(names(&r.document), ["Art"], "{:?}", r.warnings);
let texts = text_of(&r.document.layers[0]);
// The page's own object is a group (its type and strokes), and the other is made from the file.
let all: Vec<String> = {
let mut v = vec![];
r.document.walk(|n| {
if let NodeKind::Text(t) = &n.kind {
v.push(t.plain_text());
}
});
v
};
assert_eq!(all.len(), 2, "{all:?} {:?}", r.warnings);
assert!(all.contains(&"Hi there".to_string()) && all.contains(&"Away".to_string()), "{all:?}");
assert_eq!(texts.len(), 1, "the type of the page sits in a group of its own");
assert!(!r.warnings.iter().any(|w| w.contains("order the page paints")), "{:?}", r.warnings);
}
#[test]
fn a_text_object_written_as_comments_is_read_like_any_other() {
let doc = text_document(&[("Hi\r", 0, (8200.0, 8180.0), (0.0, 0.0), 0.0)]);
let commented: String = text_object(0).lines().map(|l| format!("%_{l}\n")).collect();
let art = native_with_text(&layer("Spare", false, &(square(10, 10) + "\n" + &commented)), &doc);
let r = import(&eps(&page_square(10, 10), &art)).unwrap();
let texts = text_of(&r.document.layers[0]);
assert_eq!(texts.len(), 1, "{:?}", r.warnings);
assert_eq!(texts[0].plain_text(), "Hi");
}
#[test]
fn an_area_type_object_with_its_own_nested_art_doesnt_swallow_the_art_after_it() {
let area = "/AI11Text :\n0 /FreeUndo ,\n0 /FrameIndex ,\n3 /StoryIndex ,\n/Art :\n1 Ap\n0 0 m\n9 0 L\n9 9 L\nn\n; /ConfiningPath ,\n2 /TextAntialiasing ,\n;\n";
let art = native(&layer("Art", true, &(square(10, 10) + "\n" + area + &square(30, 30))));
let r = import(&eps(&(page_square(10, 10) + "\n" + &page_square(30, 30)), &art)).unwrap();
let paths = r.document.layers[0].children().map_or(0, Vec::len);
assert!(paths >= 2, "{paths} {:?}", r.warnings);
}
#[test]
fn a_line_the_page_draws_in_pieces_goes_to_its_text_object_whole() {
// The page sets "Hi there" as "Hi" and " there" (as when kerning changes); the story is one line.
let doc = text_document(&[("Hi there\r", 0, (8200.0, 8180.0), (0.0, 0.0), 0.0)]);
let art = native_with_text(&layer("Art", true, &text_object(0)), &doc);
let page = "0 0 0 1 setcmykcolor /Helvetica findfont 14 scalefont setfont 58.5 61.5 moveto (Hi) show 70 61.5 moveto (there) show";
let r = import(&eps(page, &art)).unwrap();
// One text, with the line's space between the pieces.
let group = &r.document.layers[0].children().unwrap()[0];
assert_eq!(kinds(group), ["text"], "{:?}", r.warnings);
let texts: Vec<String> =
group.children().unwrap().iter().filter_map(|n| if let NodeKind::Text(t) = &n.kind { Some(t.plain_text()) } else { None }).collect();
assert_eq!(texts, ["Hi there"]);
}
#[test]
fn type_of_the_page_that_no_story_places_stays_with_the_nearest_text_object() {
let doc = text_document(&[("Hi there\r", 0, (8200.0, 8180.0), (0.0, 0.0), 0.0)]);
let art = native_with_text(&layer("Art", true, &text_object(0)), &doc);
let page = "0 0 0 1 setcmykcolor /Helvetica findfont 14 scalefont setfont 58.5 61.5 moveto (Hi there) show 58.5 30 moveto (Extra) show";
let r = import(&eps(page, &art)).unwrap();
let mut all = vec![];
r.document.walk(|n| {
if let NodeKind::Text(t) = &n.kind {
all.push(t.plain_text());
}
});
assert!(all.contains(&"Extra".to_string()), "{all:?} {:?}", r.warnings);
}
#[test]
fn a_commented_copy_of_a_story_that_has_a_plain_text_object_is_not_another_object() {
// The file writes some stories twice (plain, then as comments) and others only as comments.
let doc = text_document(&[("One\r", 0, (8200.0, 8180.0), (0.0, 0.0), 0.0), ("Two\r", 0, (8300.0, 8180.0), (0.0, 0.0), 0.0)]);
let commented = |story| -> String { text_object(story).lines().map(|l| format!("%_{l}\n")).collect() };
let body = text_object(0) + &commented(0) + &commented(1);
let art = native_with_text(&layer("Spare", false, &body), &doc);
let r = import(&eps(&page_square(10, 10), &art)).unwrap();
let texts: Vec<String> = text_of(&r.document.layers[0]).iter().map(|t| t.plain_text()).collect();
assert_eq!(texts, ["One", "Two"], "{:?}", r.warnings);
}