@analogjs/vitest-angular
Version:
Vitest Builder for Angular
75 lines • 11.9 kB
JavaScript
const CLEANED_ELEMENT_MARKER = '__analogSnapshotCleaned__';
export const attributesToRemovePatterns = [
'ng-reflect',
'_nghost',
'_ngcontent',
'ng-version',
];
export const attributesToClean = {
class: [/^(?:mat|cdk|ng).*-\w*\d+-\d+$/, /^ng-star-inserted$/],
id: [/^(?:mat|cdk|ng).*-\w*\d+$/],
for: [/^(?:mat|cdk|ng).*-\d+$/],
'aria-owns': [/^(?:mat|cdk|ng).*-\d+$/],
'aria-labelledby': [/^(?:mat|cdk|ng).*-\d+$/],
'aria-controls': [/^(?:mat|cdk|ng).*-\d+$/],
'aria-describedby': [/^(?:mat|cdk|ng).*-\d+$/],
};
const hasAttributesToRemove = (attribute) => attributesToRemovePatterns.some((removePattern) => attribute.name.startsWith(removePattern));
const hasAttributesToClean = (attribute) => Object.prototype.hasOwnProperty.call(attributesToClean, attribute.name);
const attributeNeedsCleaning = (attribute) => hasAttributesToClean(attribute) &&
attribute.value
.split(' ')
.some((attrValue) => attributesToClean[attribute.name].some((attributeCleanRegex) => attributeCleanRegex.test(attrValue)));
const shouldSerializeElement = (node) => {
if (node.parentElement?.tagName === 'BODY' && node.hasAttribute('id')) {
return true;
}
return Array.from(node.attributes).some((attribute) => hasAttributesToRemove(attribute) || attributeNeedsCleaning(attribute));
};
function cleanAngularElementAttributes(node) {
const nodeCopy = node.cloneNode(true);
Object.defineProperty(nodeCopy, CLEANED_ELEMENT_MARKER, {
configurable: true,
value: true,
});
if (node.parentElement?.tagName === 'BODY') {
nodeCopy.removeAttribute('id');
}
Array.from(nodeCopy.attributes).forEach((attribute) => {
if (hasAttributesToRemove(attribute)) {
nodeCopy.removeAttribute(attribute.name);
return;
}
if (hasAttributesToClean(attribute)) {
const cleanedValue = attribute.value
.split(' ')
.filter((attrValue) => !attributesToClean[attribute.name].some((attributeCleanRegex) => attributeCleanRegex.test(attrValue)))
.join(' ');
if (cleanedValue === '') {
nodeCopy.removeAttribute(attribute.name);
return;
}
nodeCopy.setAttribute(attribute.name, cleanedValue);
}
});
return nodeCopy;
}
export function createNoNgAttributesSnapshotSerializer() {
return {
serialize(val, config, indentation, depth, refs, printer) {
const cleanedNode = cleanAngularElementAttributes(val);
if (shouldSerializeElement(cleanedNode)) {
throw new Error(`NoNgAttributes serializer did not stabilize for <${cleanedNode.tagName.toLowerCase()}>`);
}
return printer(cleanedNode, config, indentation, depth, refs);
},
test(val) {
const matches = typeof Element !== 'undefined' &&
val instanceof Element &&
!val[CLEANED_ELEMENT_MARKER] &&
shouldSerializeElement(val);
return matches;
},
};
}
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{ type SnapshotSerializer } from 'vitest';\n\nconst CLEANED_ELEMENT_MARKER = '__analogSnapshotCleaned__';\n\nexport const attributesToRemovePatterns = [\n  'ng-reflect',\n  '_nghost',\n  '_ngcontent',\n  'ng-version',\n];\n\nexport const attributesToClean: Record<string, RegExp[]> = {\n  class: [/^(?:mat|cdk|ng).*-\\w*\\d+-\\d+$/, /^ng-star-inserted$/],\n  id: [/^(?:mat|cdk|ng).*-\\w*\\d+$/],\n  for: [/^(?:mat|cdk|ng).*-\\d+$/],\n  'aria-owns': [/^(?:mat|cdk|ng).*-\\d+$/],\n  'aria-labelledby': [/^(?:mat|cdk|ng).*-\\d+$/],\n  'aria-controls': [/^(?:mat|cdk|ng).*-\\d+$/],\n  'aria-describedby': [/^(?:mat|cdk|ng).*-\\d+$/],\n};\n\nconst hasAttributesToRemove = (attribute: Attr): boolean =>\n  attributesToRemovePatterns.some((removePattern) =>\n    attribute.name.startsWith(removePattern),\n  );\n\nconst hasAttributesToClean = (attribute: Attr): boolean =>\n  Object.prototype.hasOwnProperty.call(attributesToClean, attribute.name);\n\nconst attributeNeedsCleaning = (attribute: Attr): boolean =>\n  hasAttributesToClean(attribute) &&\n  attribute.value\n    .split(' ')\n    .some((attrValue) =>\n      attributesToClean[attribute.name].some((attributeCleanRegex) =>\n        attributeCleanRegex.test(attrValue),\n      ),\n    );\n\nconst shouldSerializeElement = (node: Element): boolean => {\n  if (node.parentElement?.tagName === 'BODY' && node.hasAttribute('id')) {\n    return true;\n  }\n\n  return Array.from(node.attributes).some(\n    (attribute) =>\n      hasAttributesToRemove(attribute) || attributeNeedsCleaning(attribute),\n  );\n};\n\nfunction cleanAngularElementAttributes(node: Element): Element {\n  const nodeCopy = node.cloneNode(true) as Element;\n\n  Object.defineProperty(nodeCopy, CLEANED_ELEMENT_MARKER, {\n    configurable: true,\n    value: true,\n  });\n\n  if (node.parentElement?.tagName === 'BODY') {\n    nodeCopy.removeAttribute('id');\n  }\n\n  Array.from(nodeCopy.attributes).forEach((attribute) => {\n    if (hasAttributesToRemove(attribute)) {\n      nodeCopy.removeAttribute(attribute.name);\n      return;\n    }\n\n    if (hasAttributesToClean(attribute)) {\n      const cleanedValue = attribute.value\n        .split(' ')\n        .filter(\n          (attrValue) =>\n            !attributesToClean[attribute.name].some((attributeCleanRegex) =>\n              attributeCleanRegex.test(attrValue),\n            ),\n        )\n        .join(' ');\n\n      if (cleanedValue === '') {\n        nodeCopy.removeAttribute(attribute.name);\n        return;\n      }\n\n      nodeCopy.setAttribute(attribute.name, cleanedValue);\n    }\n  });\n\n  return nodeCopy;\n}\n\nexport function createNoNgAttributesSnapshotSerializer(): SnapshotSerializer {\n  return {\n    serialize(val, config, indentation, depth, refs, printer): string {\n      const cleanedNode = cleanAngularElementAttributes(val);\n\n      if (shouldSerializeElement(cleanedNode)) {\n        throw new Error(\n          `NoNgAttributes serializer did not stabilize for <${cleanedNode.tagName.toLowerCase()}>`,\n        );\n      }\n\n      return printer(cleanedNode, config, indentation, depth, refs);\n    },\n    test(val): boolean {\n      const matches =\n        typeof Element !== 'undefined' &&\n        val instanceof Element &&\n        !(val as Element & Record<string, unknown>)[CLEANED_ELEMENT_MARKER] &&\n        shouldSerializeElement(val);\n\n      return matches;\n    },\n  };\n}\n"]}