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iconify/packages/utils/tests/emoji-regex-replace-test.ts

83 lines
1.8 KiB
TypeScript

import { createOptimisedRegex } from '../lib/emoji/regex/create';
import { findAndReplaceEmojisInText } from '../lib/emoji/replace/replace';
describe('Replacing emojis in text', () => {
it('Simple and complex regex matches', () => {
const grinningCatEmoji = String.fromCodePoint(0x1f63a);
const alienEmoji = String.fromCodePoint(0x1f47d);
const testEmoji =
String.fromCodePoint(0x1f441) +
String.fromCodePoint(0xfe0f) +
String.fromCodePoint(0x200d) +
String.fromCodePoint(0x1f5e8);
const sequence = [
'1f63a',
'1f47d',
// 2 emojis that can be sequences of each other
'1F441 FE0F',
'1F441 FE0F 200D 1F5E8 FE0F',
'1F5E8 FE0F',
];
const regex = createOptimisedRegex(sequence);
const text =
'Grinning Cat: ' +
grinningCatEmoji +
', aliens: ' +
alienEmoji +
alienEmoji +
alienEmoji +
', Test: ' +
testEmoji +
'end!';
// Counters
let grinningCatCalled = 0;
let alienCalled = 0;
let testCalled = 0;
const replaced = findAndReplaceEmojisInText(
regex,
text,
(match, prev) => {
switch (match.match) {
case grinningCatEmoji: {
expect(prev).toBe('Grinning Cat: ');
grinningCatCalled++;
return ':cat:';
}
case alienEmoji: {
if (alienCalled) {
expect(prev).toBe(
'Grinning Cat: :cat:, aliens: ' +
':alien:'.repeat(alienCalled)
);
}
alienCalled++;
return ':alien:';
}
case testEmoji: {
testCalled++;
return ':test:';
}
default: {
throw new Error(
`Unexpected match: ${JSON.stringify(match)}`
);
}
}
}
);
expect(grinningCatCalled).toBe(1);
expect(alienCalled).toBe(3);
expect(testCalled).toBe(1);
expect(replaced).toBe(
'Grinning Cat: :cat:, aliens: :alien::alien::alien:, Test: :test:end!'
);
});
});