The following string literal is intended for use as a test case for code that works with Unicode strings. It includes the first character from each of the Unicode ranges mentioned at https://www.ling.upenn.edu/courses/Spring_2003/ling538/UnicodeRanges.html
Unicode (be careful copy/pasting this, as it may not yield the correct string): �Āƀɐʰ̀ͰЀԀ܀ހऀঀఀಀഀༀကႠᄀሀᎠ᐀ ᚠᜀᜠᝀᝠក᠀ᤀᥐ᧠ᴀḀἀ ⁰₠⃐℀⅐←∀⌀␀⑀①─▀■☀✀⟀⟰⠀⤀⦀⨀⬀⺀⼀⿰ ゠㆐ㆠㇰ㈀㌀㐀䷀一ꀀ꒐가𐀀豈ffﭐ︀︠︰﹐ﹰ𐀀𐂀𐄀𐌀𐌰𐎀𐐀𐑐𐒀𐠀𝀀𝄀𝌀𝐀𠀀丽󠄀
JS Literal: \u{0000}\u{0080}\u{0100}\u{0180}\u{0250}\u{02b0}\u{0300}\u{0370}\u{0400}\u{0500}\u{0530}\u{0590}\u{0600}\u{0700}\u{0780}\u{0900}\u{0980}\u{0a00}\u{0a80}\u{0b00}\u{0b80}\u{0c00}\u{0c80}\u{0d00}\u{0d80}\u{0e00}\u{0e80}\u{0f00}\u{1000}\u{10a0}\u{1100}\u{1200}\u{13a0}\u{1400}\u{1680}\u{16a0}\u{1700}\u{1720}\u{1740}\u{1760}\u{1780}\u{1800}\u{1900}\u{1950}\u{19e0}\u{1d00}\u{1e00}\u{1f00}\u{2000}\u{2070}\u{20a0}\u{20d0}\u{2100}\u{2150}\u{2190}\u{2200}\u{2300}\u{2400}\u{2440}\u{2460}\u{2500}\u{2580}\u{25a0}\u{2600}\u{2700}\u{27c0}\u{27f0}\u{2800}\u{2900