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parser-location-info.test.ts
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parser-location-info.test.ts
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import * as assert from 'node:assert';
import { outdent } from 'outdent';
import * as parse5 from 'parse5';
import {
generateLocationInfoParserTests,
assertStartTagLocation,
assertNodeLocation,
} from 'parse5-test-utils/utils/generate-location-info-parser-tests.js';
import { generateTestsForEachTreeAdapter, treeAdapters } from 'parse5-test-utils/utils/common.js';
import { TreeAdapterTypeMap } from 'parse5/dist/tree-adapters/interface.js';
generateLocationInfoParserTests(
'location-info-parser',
'Parser',
(input: string, opts: parse5.ParserOptions<TreeAdapterTypeMap>) => ({
node: parse5.parse(input, opts),
})
);
generateTestsForEachTreeAdapter('location-info-parser', (treeAdapter) => {
test('Regression - Incorrect LocationInfo.endOffset for implicitly closed <p> element (GH-109)', () => {
const html = '<p>1<p class="2">3';
const opts = {
treeAdapter,
sourceCodeLocationInfo: true,
};
const fragment = parse5.parseFragment(html, opts);
const firstP = treeAdapter.getChildNodes(fragment)[0];
const firstPLocation = treeAdapter.getNodeSourceCodeLocation(firstP)!;
assert.strictEqual(html.substring(firstPLocation.startOffset, firstPLocation.endOffset), '<p>1');
});
test('Regression - Incorrect LocationInfo.endOffset for element with closing tag (GH-159)', () => {
const html = '<i>1</i>2';
const opts = {
treeAdapter,
sourceCodeLocationInfo: true,
};
const fragment = parse5.parseFragment(html, opts);
const firstChild = treeAdapter.getChildNodes(fragment)[0];
const location = treeAdapter.getNodeSourceCodeLocation(firstChild);
assert.ok(location);
assert.strictEqual(html.substring(location.startOffset, location.endOffset), '<i>1</i>');
});
test('Regression - Location info not exposed with parseFragment (GH-82)', () => {
const html = '<html><head></head><body>foo</body></html>';
const opts = {
treeAdapter,
sourceCodeLocationInfo: true,
};
const fragment = parse5.parseFragment(html, opts);
const firstChild = treeAdapter.getChildNodes(fragment)[0];
assert.ok(treeAdapter.getNodeSourceCodeLocation(firstChild));
});
test('Regression - location info mixin error when parsing <template> elements (GH-90)', () => {
const html = '<template>hello</template>';
const opts = {
treeAdapter,
sourceCodeLocationInfo: true,
};
assert.doesNotThrow(() => {
parse5.parseFragment(html, opts);
});
});
test('Regression - location info not attached for empty attributes (GH-96)', () => {
const html = '<div test-attr></div>';
const opts = {
treeAdapter,
sourceCodeLocationInfo: true,
};
const fragment = parse5.parseFragment(html, opts);
const firstChild = treeAdapter.getChildNodes(fragment)[0];
assert.ok(treeAdapter.getNodeSourceCodeLocation(firstChild)?.attrs?.['test-attr']);
});
test('Regression - location line incorrect when a character is unconsumed (GH-151)', () => {
const html = outdent`
<html><body><script>
var x = window.scrollY <
100;
</script>
</body></html>
`;
const opts = {
treeAdapter,
sourceCodeLocationInfo: true,
};
const document = parse5.parse(html, opts);
const htmlEl = treeAdapter.getChildNodes(document)[0];
const bodyEl = treeAdapter.getChildNodes(htmlEl)[1];
const scriptEl = treeAdapter.getChildNodes(bodyEl)[0];
const scriptLocation = treeAdapter.getNodeSourceCodeLocation(scriptEl);
assert.strictEqual(treeAdapter.getTagName(scriptEl), 'script');
assert.equal(scriptLocation?.endTag?.startLine, 4);
});
test('Regression - location.startTag should be available if end tag is missing (GH-181)', () => {
const html = '<p>test';
const opts = {
treeAdapter,
sourceCodeLocationInfo: true,
};
const fragment = parse5.parseFragment(html, opts);
const p = treeAdapter.getChildNodes(fragment)[0];
const location = treeAdapter.getNodeSourceCodeLocation(p);
assert.ok(location);
assertNodeLocation(location, html, html, [html]);
assertStartTagLocation(location, html, html, [html]);
assert.ok(!location.endTag);
});
test('Regression - location.endTag should be available adjusted SVG elements (GH-352)', () => {
const html = '<svg><foreignObject></foreignObject></svg>';
const opts = {
treeAdapter,
sourceCodeLocationInfo: true,
};
const fragment = parse5.parseFragment(html, opts);
const svg = treeAdapter.getChildNodes(fragment)[0];
const foreignObject = treeAdapter.getChildNodes(svg)[0];
const location = treeAdapter.getNodeSourceCodeLocation(foreignObject);
assert.ok(location && location.startTag && location.endTag);
assert.strictEqual(
html.slice(location.startTag.startOffset, location.endTag.endOffset),
'<foreignObject></foreignObject>'
);
});
test("Should use the HTML element's position for BODY, if BODY isn't closed", () => {
const html = outdent`
<html>
<body>
<p>test</p>
</html>
<!-- comment -->
`;
const opts = {
treeAdapter,
sourceCodeLocationInfo: true,
};
const document = parse5.parse(html, opts);
const htmlEl = treeAdapter.getChildNodes(document)[0];
const bodyEl = treeAdapter.getChildNodes(htmlEl)[1];
const htmlLocation = treeAdapter.getNodeSourceCodeLocation(htmlEl);
const bodyLocation = treeAdapter.getNodeSourceCodeLocation(bodyEl);
assert.ok(htmlLocation?.endTag && bodyLocation);
// HTML element's end tag's start location should be BODY's end location
assert.strictEqual(htmlLocation.endTag.startOffset, bodyLocation.endOffset);
assert.strictEqual(htmlLocation.endTag.startLine, bodyLocation.endLine);
assert.strictEqual(htmlLocation.endTag.startCol, bodyLocation.endCol);
// The HTML element's location should not be the location of EOF
assert.notStrictEqual(htmlLocation.endOffset, html.length);
});
test('Should set HTML location to EOF if no end tag is supplied', () => {
const html = outdent`
<html>
<body>
<p>test</p>
<!-- comment -->
`;
const opts = {
treeAdapter,
sourceCodeLocationInfo: true,
};
const document = parse5.parse(html, opts);
const htmlEl = treeAdapter.getChildNodes(document)[0];
const bodyEl = treeAdapter.getChildNodes(htmlEl)[1];
const htmlLocation = treeAdapter.getNodeSourceCodeLocation(htmlEl);
const bodyLocation = treeAdapter.getNodeSourceCodeLocation(bodyEl);
assert.ok(htmlLocation && bodyLocation);
assert.strictEqual(htmlLocation.endOffset, html.length);
assert.strictEqual(bodyLocation.endOffset, html.length);
});
});
describe('location-info-parser', () => {
it('Updating node source code location (GH-314)', () => {
const sourceCodeLocationSetter = {
setNodeSourceCodeLocation(node: any, location: any): void {
node.sourceCodeLocation =
location === null
? null
: {
start: {
line: location.startLine,
column: location.startCol,
offset: location.startOffset,
},
end: {
line: location.endLine,
column: location.endCol,
offset: location.endOffset,
},
};
},
updateNodeSourceCodeLocation(node: any, endLocation: any): void {
node.sourceCodeLocation = {
start: node.sourceCodeLocation.start,
end: {
line: endLocation.endLine,
column: endLocation.endCol,
offset: endLocation.endOffset,
},
};
},
};
const treeAdapter = { ...treeAdapters.default, ...sourceCodeLocationSetter };
const document = parse5.parse('<!doctype><body>Testing location</body>', {
treeAdapter,
sourceCodeLocationInfo: true,
});
const [doctype, html] = document.childNodes;
assert.ok(treeAdapters.default.isElementNode(html));
const [head, body] = html.childNodes;
assert.ok(treeAdapters.default.isElementNode(body));
const [text] = body.childNodes;
assert.deepEqual(doctype.sourceCodeLocation, {
start: { line: 1, column: 1, offset: 0 },
end: { line: 1, column: 11, offset: 10 },
});
assert.strictEqual(html.sourceCodeLocation, null);
assert.strictEqual(head.sourceCodeLocation, null);
assert.deepEqual(body.sourceCodeLocation, {
start: { line: 1, column: 11, offset: 10 },
end: { line: 1, column: 40, offset: 39 },
});
assert.deepEqual(text.sourceCodeLocation, {
start: { line: 1, column: 17, offset: 16 },
end: { line: 1, column: 33, offset: 32 },
});
});
});