jpmschweitzerandClaude Opus 4.8
fb96e5238f
Zero-dependency, tolerant XML reader (elements/attrs/text/comments/prolog/ CDATA/entities; <style> read as raw text) producing a generic element tree. The normalizer folds d2/graphviz's class-based <style> rules into inline presentation attributes — cascade presentation-attr < tag < class < style — then drops <style>/class/style, so the painter only ever sees inline attrs (D-103). Flutter-free, covered by dart test (26 cases). No user-visible behaviour yet. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
99 lines
3.4 KiB
Dart
99 lines
3.4 KiB
Dart
import 'package:clide/src/svg/svg_xml.dart';
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import 'package:test/test.dart';
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void main() {
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XmlElement parse(String s) {
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final root = parseXml(s);
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expect(root, isNotNull, reason: 'expected an element root for: $s');
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return root!;
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}
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group('parseXml', () {
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test('element with attributes', () {
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final e = parse('<rect x="1" y="2" width="3" height="4"/>');
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expect(e.name, 'rect');
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expect(e.attrs, {'x': '1', 'y': '2', 'width': '3', 'height': '4'});
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expect(e.children, isEmpty);
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});
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test('single-quoted and unquoted attribute values', () {
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final e = parse("<g fill='red' opacity=0.5/>");
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expect(e.attrs['fill'], 'red');
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expect(e.attrs['opacity'], '0.5');
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});
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test('nested children preserve order', () {
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final e = parse('<g><rect/><circle/></g>');
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expect(e.name, 'g');
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expect(e.children.whereType<XmlElement>().map((c) => c.name), ['rect', 'circle']);
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});
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test('text content is captured', () {
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final e = parse('<text>hello</text>');
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final t = e.children.single as XmlText;
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expect(t.text, 'hello');
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});
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test('comments are skipped', () {
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final e = parse('<g><!-- a comment --><rect/></g>');
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expect(e.children.whereType<XmlElement>().map((c) => c.name), ['rect']);
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expect(e.children.whereType<XmlText>(), isEmpty);
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});
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test('xml prolog and doctype are skipped', () {
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final e = parse('<?xml version="1.0"?><!DOCTYPE svg><svg width="10"/>');
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expect(e.name, 'svg');
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expect(e.attrs['width'], '10');
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});
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test('CDATA content is captured verbatim', () {
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final e = parse('<style><![CDATA[ .a { fill: red } ]]></style>');
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expect((e.children.single as XmlText).text, contains('.a { fill: red }'));
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});
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test('entities are decoded in text and attributes', () {
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final e = parse('<text title="a & b"><tag> A</text>');
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expect(e.attrs['title'], 'a & b');
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expect((e.children.single as XmlText).text, '<tag> A');
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});
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test('style body is read as raw text, not markup', () {
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// CSS with > and { } must not be parsed as elements.
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final e = parse('<style>.edge > .head { fill: #0D32B2 } .b{stroke:none}</style>');
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expect(e.name, 'style');
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final css = (e.children.single as XmlText).text;
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expect(css, contains('.edge > .head'));
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expect(css, contains('stroke:none'));
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});
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test('namespaced attribute names are kept verbatim', () {
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final e = parse('<image xlink:href="a.png" href="b.png"/>');
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expect(e.attrs['xlink:href'], 'a.png');
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expect(e.attrs['href'], 'b.png');
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});
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test('mismatched close tag is tolerated, no throw', () {
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final e = parse('<g><rect></wrong></g>');
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expect(e.name, 'g');
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expect(e.children.whereType<XmlElement>().single.name, 'rect');
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});
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test('descendants walks the whole subtree', () {
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final e = parse('<svg><g><rect/></g><circle/></svg>');
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final names = e.descendants().whereType<XmlElement>().map((c) => c.name).toList();
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expect(names, ['g', 'rect', 'circle']);
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});
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test('non-element root returns null, never throws', () {
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expect(parseXml(''), isNull);
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expect(parseXml(' '), isNull);
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expect(parseXml('just text'), isNull);
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});
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test('unterminated tag does not throw', () {
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// Should not hang or throw; returns whatever was understood.
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expect(() => parseXml('<svg><rect x="1"'), returnsNormally);
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});
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});
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}
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