1 files changed, 17 insertions, 0 deletions
diff --git a/src/test/ui/lexer/lex-emoji-identifiers.rs b/src/test/ui/lexer/lex-emoji-identifiers.rs
new file mode 100644
index 000000000..91b5929c0
--- /dev/null
+++ b/src/test/ui/lexer/lex-emoji-identifiers.rs
@@ -0,0 +1,17 @@
+fn invalid_emoji_usages() {
+    let arrow↔️ = "basic emoji"; //~ ERROR: identifiers cannot contain emoji
+    // FIXME
+    let planet🪐 = "basic emoji"; //~ ERROR: unknown start of token
+    // FIXME
+    let wireless🛜 = "basic emoji"; //~ ERROR: unknown start of token
+    // FIXME
+    let key1️⃣ = "keycap sequence"; //~ ERROR: unknown start of token
+                                    //~^ WARN: identifier contains uncommon Unicode codepoints
+    let flag🇺🇳 = "flag sequence"; //~ ERROR: identifiers cannot contain emoji
+    let wales🏴 = "tag sequence"; //~ ERROR: identifiers cannot contain emoji
+    let folded🙏🏿 = "modifier sequence"; //~ ERROR: identifiers cannot contain emoji
+}
+
+fn main() {
+    invalid_emoji_usages();
+}