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diff --git a/src/test/ui/lint/lint-nonstandard-style-unicode-1.rs b/src/test/ui/lint/lint-nonstandard-style-unicode-1.rs
new file mode 100644
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+++ b/src/test/ui/lint/lint-nonstandard-style-unicode-1.rs
@@ -0,0 +1,49 @@
+#![allow(dead_code)]
+
+#![forbid(non_camel_case_types)]
+
+// Some scripts (e.g., hiragana) don't have a concept of
+// upper/lowercase
+
+// 1. non_camel_case_types
+
+// Can start with non-lowercase letter
+struct Θχ;
+struct ヒa;
+
+struct χa;
+//~^ ERROR type `χa` should have an upper camel case name
+
+// If there's already leading or trailing underscores, they get trimmed before checking.
+// This is fine:
+struct _ヒb;
+
+// This is not:
+struct __χa;
+//~^ ERROR type `__χa` should have an upper camel case name
+
+// Besides this, we cannot have two continuous underscores in the middle.
+
+struct 对__否;
+//~^ ERROR type `对__否` should have an upper camel case name
+
+struct ヒ__χ;
+//~^ ERROR type `ヒ__χ` should have an upper camel case name
+
+// also cannot have lowercase letter next to an underscore.
+// so this triggers the lint:
+
+struct Hello_你好;
+//~^ ERROR type `Hello_你好` should have an upper camel case name
+
+struct Hello_World;
+//~^ ERROR type `Hello_World` should have an upper camel case name
+
+struct 你_ӟ;
+//~^ ERROR type `你_ӟ` should have an upper camel case name
+
+// and this is ok:
+
+struct 你_好;
+
+fn main() {}