angular-cn/aio/tools/transforms/angular-api-package/content-rules/noMarkdownHeadings.spec.js

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const createNoMarkdownHeadings = require('./noMarkdownHeadings');
describe('createNoMarkdownHeadings rule', () => {
const noMarkdownHeadings = createNoMarkdownHeadings();
it('should return `undefined` if there is no heading in a value', () => {
expect(noMarkdownHeadings({}, 'description', 'some ## text'))
.toBeUndefined();
});
it('should return an error message if there is a markdown heading in a single line value', () => {
expect(noMarkdownHeadings({}, 'description', '# heading 1'))
.toEqual('Invalid headings found in "description" property: "# heading 1".');
});
it('should return an error message if there is a markdown heading in a multiline value', () => {
expect(noMarkdownHeadings({}, 'description', 'some text\n# heading 1'))
.toEqual('Invalid headings found in "description" property: "# heading 1".');
});
it('should cope with up to 3 spaces before the heading marker', () => {
expect(noMarkdownHeadings({}, 'description', ' # heading 1'))
.toEqual('Invalid headings found in "description" property: " # heading 1".');
expect(noMarkdownHeadings({}, 'description', ' # heading 1'))
.toEqual('Invalid headings found in "description" property: " # heading 1".');
expect(noMarkdownHeadings({}, 'description', ' # heading 1'))
.toEqual('Invalid headings found in "description" property: " # heading 1".');
});
it('should return an error message for each heading found', () => {
expect(noMarkdownHeadings({}, 'description', '# heading 1\nsome text\n## heading 2\nmore text\n### heading 3'))
.toEqual('Invalid headings found in "description" property: "# heading 1", "## heading 2" and "### heading 3".');
});
describe('(specified heading levels)', () => {
it('should take heading levels into account', () => {
const noTopLevelHeadings = createNoMarkdownHeadings(1);
expect(noTopLevelHeadings({}, 'description', '# top level'))
.toEqual('Invalid headings found in "description" property: "# top level".');
expect(noTopLevelHeadings({}, 'description', '## second level'))
.toBeUndefined();
expect(noTopLevelHeadings({}, 'description', '### third level'))
.toBeUndefined();
expect(noTopLevelHeadings({}, 'description', '#### fourth level'))
.toBeUndefined();
const allowLevel3Headings = createNoMarkdownHeadings(1, 2, '4,');
expect(allowLevel3Headings({}, 'description', '# top level'))
.toEqual('Invalid headings found in "description" property: "# top level".');
expect(allowLevel3Headings({}, 'description', '## second level'))
.toEqual('Invalid headings found in "description" property: "## second level".');
expect(allowLevel3Headings({}, 'description', '### third level'))
.toBeUndefined();
expect(allowLevel3Headings({}, 'description', '#### fourth level'))
.toEqual('Invalid headings found in "description" property: "#### fourth level".');
});
});
});