Test your font here:

 ☺☻♥♦♣♠•◘◦◙♂♀♪♫☼►◄↕‼¶§▬↨↑↓→←∟↔▲▼ !"#$%&'()*+,-./0123456789:;<=>?
@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\]^_`abcdefghijklmnopqrstuvwxyz{|}~⌂
ÇüéâäàåçêëèïîìÄÅÉæÆôöòûùÿÖÜ¢£¥₧ƒáíóúñѪº¿⌐¬½¼¡«»░▒▓│┤╡╢╖╕╣║╗╝╜╛┐
└┴┬├─┼╞╟╚╔╩╦╠═╬╧╨╤╥╙╘╒╓╫╪┘┌█▄▌▐▀αßΓπΣσµτΦΘΩδ∞φε∩≡±≥≤⌠⌡÷≈°∙·√ⁿ²■ 

Slope continuity test:

 🭋🭀  🭉🬾   ◢◣      🭇🭄🭏🬼          🭈🭆🭂🭍🭑🬽         🭯   🭯   ██🭫██ 
 🭅🭐  🭃🭎  ◢██◣    🭊🭁██🭌🬿      🭈🭆🭂██████🭍🭑🬽     ◢█◣ ◢█◣  █◤ ◥█ ◥█◤
🭋██🭀 ██ ◢████◣ 🭇🭄██████🭏🬼 🭈🭆🭂████████████🭍🭑🬽 🭮███🮛███🭬 🭪   🭨  🮚
🭦██🭛 ██ ◥████◤ 🭢🭕██████🭠🭗 🭣🭧🭓████████████🭞🭜🭘  ◥█◤ ◥█◤  █◣ ◢█ ◢█◣
 🭖🭡  🭔🭟  ◥██◤    🭥🭒██🭝🭚      🭣🭧🭓██████🭞🭜🭘      🭭   🭭   ██🭩██
 🭦🭛  🭤🭙   ◥◤      🭢🭕🭠🭗          🭣🭧🭓🭞🭜🭘         
                                                     

     🮣🮧🮢  🮥 🮢 🮣 🮤
    🮣🮠 🮡🮢   🮠 🮡
   🮣🮧🮢  🮥 🮧🮣🮢
  🮣🮠 🮡🮢🮣🮠
 🮣🮤   🮥🮠  🮦🮡🮠
🮣🮠🮡🮢 🮣🮠
🮤  🮡🮦🮠
🮡🮢 🮣🮠
 🮡🮦🮠

		▁▂▃▄▅▆▇█
	▁▂▃▄▅▆▇█████████
▁▂▃▄▅▆▇█████████████████

▏
▎
▍
▌
▋
▊
▉
█
█▏
█▎
█▍
█▌
█▋
█▊
█▉
██
██▏
██▎
██▍
██▌
██▋
██▊
██▉
███