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iconify/packages/utils/tests/emoji-convert-test.ts
2022-12-03 19:51:59 +02:00

136 lines
3.3 KiB
TypeScript

/* eslint-disable @typescript-eslint/no-non-null-assertion */
import {
getEmojiCodePoint,
getEmojiUnicode,
splitUTF32Number,
isUTF32SplitNumber,
mergeUTF32Numbers,
convertEmojiSequenceToUTF16,
convertEmojiSequenceToUTF32,
} from '../lib/emoji/convert';
describe('Testing emoji code points', () => {
it('UTF-16', () => {
// Convert to number
const codePoint = getEmojiCodePoint('2764');
expect(codePoint).toBe(parseInt('2764', 16));
// Check for UTF-32
expect(splitUTF32Number(codePoint)).toBeUndefined();
expect(isUTF32SplitNumber(codePoint)).toBe(false);
// Convert to character
expect(getEmojiUnicode(codePoint)).toBe('\u2764');
});
it('UTF-32', () => {
// Convert to number
const codePoint = getEmojiCodePoint('1F49A');
expect(codePoint).toBe(parseInt('1F49A', 16));
expect(isUTF32SplitNumber(codePoint)).toBe(false);
// Convert to UTF-16 sequence
const sequence = splitUTF32Number(codePoint);
expect(sequence).toEqual([55357, 56474]);
expect(isUTF32SplitNumber(sequence![0])).toBe(1);
expect(isUTF32SplitNumber(sequence![1])).toBe(2);
// Convert back to UTF-32
expect(mergeUTF32Numbers(...sequence!)).toBe(codePoint);
// Convert to string
expect(getEmojiUnicode(codePoint)).toBe('\uD83D\uDC9A');
});
it('Sequences to UTF-16', () => {
// Nothing to convert
expect(convertEmojiSequenceToUTF16([])).toEqual([]);
expect(convertEmojiSequenceToUTF16([0x263a, 0xfe0f])).toEqual([
0x263a, 0xfe0f,
]);
// UTF-32
expect(
convertEmojiSequenceToUTF16([
0x1f441, 0xfe0f, 0x200d, 0x1f5e8, 0xfe0f,
])
).toEqual([0xd83d, 0xdc41, 0xfe0f, 0x200d, 0xd83d, 0xdde8, 0xfe0f]);
});
it('Sequences to UTF-32', () => {
let thrown: boolean;
// Nothing to convert
expect(convertEmojiSequenceToUTF32([])).toEqual([]);
expect(
convertEmojiSequenceToUTF32([
0x1f441, 0xfe0f, 0x200d, 0x1f5e8, 0xfe0f,
])
).toEqual([0x1f441, 0xfe0f, 0x200d, 0x1f5e8, 0xfe0f]);
// UTF-16
expect(
convertEmojiSequenceToUTF32([
0xd83d, 0xdc41, 0xfe0f, 0x200d, 0xd83d, 0xdde8, 0xfe0f,
])
).toEqual([0x1f441, 0xfe0f, 0x200d, 0x1f5e8, 0xfe0f]);
// Bad UTF-16: first character is wrong
expect(
convertEmojiSequenceToUTF32(
[0xa83d, 0xdc41, 0xfe0f, 0x200d, 0xd83d, 0xdde8, 0xfe0f],
false
)
).toEqual([0xa83d, 0xdc41, 0xfe0f, 0x200d, 0x1f5e8, 0xfe0f]);
thrown = false;
try {
expect(
convertEmojiSequenceToUTF32([
0xa83d, 0xdc41, 0xfe0f, 0x200d, 0xd83d, 0xdde8, 0xfe0f,
])
);
} catch {
thrown = true;
}
expect(thrown).toBe(true);
// Bad UTF-16: second character is wrong
expect(
convertEmojiSequenceToUTF32(
[0xd83d, 0xec41, 0xfe0f, 0x200d, 0xd83d, 0xdde8, 0xfe0f],
false
)
).toEqual([0xd83d, 0xec41, 0xfe0f, 0x200d, 0x1f5e8, 0xfe0f]);
thrown = false;
try {
expect(
convertEmojiSequenceToUTF32([
0xd83d, 0xec41, 0xfe0f, 0x200d, 0xd83d, 0xdde8, 0xfe0f,
])
);
} catch {
thrown = true;
}
expect(thrown).toBe(true);
// Bad UTF-16: unexpected end
expect(
convertEmojiSequenceToUTF32(
[0xd83d, 0xdc41, 0xfe0f, 0x200d, 0xd83d],
false
)
).toEqual([0x1f441, 0xfe0f, 0x200d, 0xd83d]);
thrown = false;
try {
expect(
convertEmojiSequenceToUTF32([
0xd83d, 0xdc41, 0xfe0f, 0x200d, 0xd83d,
])
);
} catch {
thrown = true;
}
expect(thrown).toBe(true);
});
});