1 files changed, 307 insertions, 0 deletions
diff --git a/third_party/rust/paste/tests/test.rs b/third_party/rust/paste/tests/test.rs
new file mode 100644
index 0000000000..3aecd8d8e9
--- /dev/null
+++ b/third_party/rust/paste/tests/test.rs
@@ -0,0 +1,307 @@
+mod test_basic {
+    struct Struct;
+
+    paste::item! {
+        impl Struct {
+            fn [<a b c>]() {}
+        }
+    }
+
+    #[test]
+    fn test() {
+        Struct::abc();
+    }
+}
+
+mod test_in_impl {
+    struct Struct;
+
+    impl Struct {
+        paste::item! {
+            fn [<a b c>]() {}
+        }
+    }
+
+    #[test]
+    fn test() {
+        Struct::abc();
+    }
+}
+
+#[test]
+fn test_shared_hygiene() {
+    paste::expr! {
+        let [<a a>] = 1;
+        assert_eq!([<a a>], 1);
+    }
+}
+
+#[test]
+fn test_repeat() {
+    const ROCKET_A: &'static str = "/a";
+    const ROCKET_B: &'static str = "/b";
+
+    macro_rules! routes {
+        ($($route:ident),*) => {{
+            paste::expr! {
+                vec![$( [<ROCKET_ $route>] ),*]
+            }
+        }}
+    }
+
+    let routes = routes!(A, B);
+    assert_eq!(routes, vec!["/a", "/b"]);
+}
+
+#[test]
+fn test_integer() {
+    const CONST0: &'static str = "const0";
+
+    let pasted = paste::expr!([<CONST 0>]);
+    assert_eq!(pasted, CONST0);
+}
+
+#[test]
+fn test_underscore() {
+    paste::expr! {
+        const A_B: usize = 0;
+        assert_eq!([<A _ B>], 0);
+    }
+}
+
+#[test]
+fn test_lifetime() {
+    paste::expr! {
+        #[allow(dead_code)]
+        struct S<[<'d e>]> {
+            q: &[<'d e>] str,
+        }
+    }
+}
+
+#[test]
+fn test_keyword() {
+    paste::expr! {
+        struct [<F move>];
+
+        let _ = Fmove;
+    }
+}
+
+#[test]
+fn test_literal_str() {
+    paste::expr! {
+        struct [<Foo "Bar-Baz">];
+
+        let _ = FooBar_Baz;
+    }
+}
+
+#[test]
+fn test_env_literal() {
+    paste::expr! {
+        struct [<Lib env bar>];
+
+        let _ = Libenvbar;
+    }
+}
+
+#[test]
+fn test_env_present() {
+    paste::expr! {
+        struct [<Lib env!("CARGO_PKG_NAME")>];
+
+        let _ = Libpaste;
+    }
+}
+
+#[test]
+fn test_raw_identifier() {
+    paste::expr! {
+        struct [<F r#move>];
+
+        let _ = Fmove;
+    }
+}
+
+#[test]
+fn test_false_start() {
+    trait Trait {
+        fn f() -> usize;
+    }
+
+    struct S;
+
+    impl Trait for S {
+        fn f() -> usize {
+            0
+        }
+    }
+
+    paste::expr! {
+        let x = [<S as Trait>::f()];
+        assert_eq!(x[0], 0);
+    }
+}
+
+#[test]
+fn test_local_variable() {
+    let yy = 0;
+
+    paste::expr! {
+        assert_eq!([<y y>], 0);
+    }
+}
+
+mod test_none_delimited_single_ident {
+    macro_rules! m {
+        ($id:ident) => {
+            paste::item! {
+                fn f() -> &'static str {
+                    stringify!($id)
+                }
+            }
+        };
+    }
+
+    m!(i32x4);
+
+    #[test]
+    fn test() {
+        assert_eq!(f(), "i32x4");
+    }
+}
+
+mod test_none_delimited_single_lifetime {
+    macro_rules! m {
+        ($life:lifetime) => {
+            paste::item! {
+                pub struct S;
+                impl<$life> S {
+                    fn f() {}
+                }
+            }
+        };
+    }
+
+    m!('a);
+
+    #[test]
+    fn test() {
+        S::f();
+    }
+}
+
+mod test_to_lower {
+    macro_rules! m {
+        ($id:ident) => {
+            paste::item! {
+                fn [<my_ $id:lower _here>](_arg: u8) -> &'static str {
+                    stringify!([<$id:lower>])
+                }
+            }
+        };
+    }
+
+    m!(Test);
+
+    #[test]
+    fn test_to_lower() {
+        assert_eq!(my_test_here(0), "test");
+    }
+}
+
+#[test]
+fn test_env_to_lower() {
+    paste::expr! {
+        struct [<Lib env!("CARGO_PKG_NAME"):lower>];
+
+        let _ = Libpaste;
+    }
+}
+
+mod test_to_upper {
+    macro_rules! m {
+        ($id:ident) => {
+            paste::item! {
+                const [<MY_ $id:upper _HERE>]: &str = stringify!([<$id:upper>]);
+            }
+        };
+    }
+
+    m!(Test);
+
+    #[test]
+    fn test_to_upper() {
+        assert_eq!(MY_TEST_HERE, "TEST");
+    }
+}
+
+#[test]
+fn test_env_to_upper() {
+    paste::expr! {
+        const [<LIB env!("CARGO_PKG_NAME"):upper>]: &str = "libpaste";
+
+        let _ = LIBPASTE;
+    }
+}
+
+mod test_to_snake {
+    macro_rules! m {
+        ($id:ident) => {
+            paste::item! {
+                const DEFAULT_SNAKE: &str = stringify!([<$id:snake>]);
+                const LOWER_SNAKE: &str = stringify!([<$id:snake:lower>]);
+                const UPPER_SNAKE: &str = stringify!([<$id:snake:upper>]);
+            }
+        };
+    }
+
+    m!(ThisIsButATest);
+
+    #[test]
+    fn test_to_snake() {
+        assert_eq!(DEFAULT_SNAKE, "this_is_but_a_test");
+        assert_eq!(LOWER_SNAKE, "this_is_but_a_test");
+        assert_eq!(UPPER_SNAKE, "THIS_IS_BUT_A_TEST");
+    }
+}
+
+#[test]
+fn test_env_to_snake() {
+    paste::expr! {
+        const [<LIB env!("CARGO_PKG_NAME"):snake:upper>]: &str = "libpaste";
+
+        let _ = LIBPASTE;
+    }
+}
+
+mod test_to_camel {
+    macro_rules! m {
+        ($id:ident) => {
+            paste::item! {
+                const DEFAULT_CAMEL: &str = stringify!([<$id:camel>]);
+                const LOWER_CAMEL: &str = stringify!([<$id:camel:lower>]);
+                const UPPER_CAMEL: &str = stringify!([<$id:camel:upper>]);
+            }
+        };
+    }
+
+    m!(this_is_but_a_test);
+
+    #[test]
+    fn test_to_camel() {
+        assert_eq!(DEFAULT_CAMEL, "ThisIsButATest");
+        assert_eq!(LOWER_CAMEL, "thisisbutatest");
+        assert_eq!(UPPER_CAMEL, "THISISBUTATEST");
+    }
+}
+
+#[test]
+fn test_env_to_camel() {
+    paste::expr! {
+        const [<LIB env!("CARGO_PKG_NAME"):camel>]: &str = "libpaste";
+
+        let _ = LIBPaste;
+    }
+}