fn testUtf8ValidCodepoint() !void 1613
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1622fn testUtf8ValidCodepoint() !void {
try testing.expect(utf8ValidCodepoint('e'));
try testing.expect(utf8ValidCodepoint('ë'));
try testing.expect(utf8ValidCodepoint('は'));
try testing.expect(utf8ValidCodepoint(0xe000));
try testing.expect(utf8ValidCodepoint(0x10ffff));
try testing.expect(!utf8ValidCodepoint(0xd800));
try testing.expect(!utf8ValidCodepoint(0xdfff));
try testing.expect(!utf8ValidCodepoint(0x110000));
}