1 files changed, 73 insertions, 0 deletions
diff --git a/tests/rustdoc/constant/rfc-2632-const-trait-impl.rs b/tests/rustdoc/constant/rfc-2632-const-trait-impl.rs
new file mode 100644
index 00000000000..8a86e3e5e97
--- /dev/null
+++ b/tests/rustdoc/constant/rfc-2632-const-trait-impl.rs
@@ -0,0 +1,73 @@
+// Test that we do not currently display `~const` in rustdoc
+// as that syntax is currently provisional; `~const Destruct` has
+// no effect on stable code so it should be hidden as well.
+//
+// To future blessers: make sure that `const_trait_impl` is
+// stabilized when changing `@!has` to `@has`, and please do
+// not remove this test.
+//
+// FIXME(const_trait_impl) add `const_trait` to `Fn` so we use `~const`
+// FIXME(const_trait_impl) restore `const_trait` to `Destruct`
+#![feature(const_trait_impl)]
+#![crate_name = "foo"]
+
+use std::marker::Destruct;
+
+pub struct S<T>(T);
+
+//@ !has foo/trait.Tr.html '//pre[@class="rust item-decl"]/code/a[@class="trait"]' '~const'
+//@ has - '//pre[@class="rust item-decl"]/code/a[@class="trait"]' 'Fn'
+//@ !has - '//pre[@class="rust item-decl"]/code/span[@class="where"]' '~const'
+//@ has - '//pre[@class="rust item-decl"]/code/span[@class="where"]' ': Fn'
+#[const_trait]
+pub trait Tr<T> {
+    //@ !has - '//section[@id="method.a"]/h4[@class="code-header"]' '~const'
+    //@ has - '//section[@id="method.a"]/h4[@class="code-header"]/a[@class="trait"]' 'Fn'
+    //@ !has - '//section[@id="method.a"]/h4[@class="code-header"]/span[@class="where"]' '~const'
+    //@ has - '//section[@id="method.a"]/h4[@class="code-header"]/div[@class="where"]' ': Fn'
+    fn a<A: /* ~const */ Fn() /* + ~const Destruct */>()
+    where
+        Option<A>: /* ~const */ Fn() /* + ~const Destruct */,
+    {
+    }
+}
+
+//@ has - '//section[@id="impl-Tr%3CT%3E-for-T"]' ''
+//@ !has - '//section[@id="impl-Tr%3CT%3E-for-T"]/h3[@class="code-header"]' '~const'
+//@ has - '//section[@id="impl-Tr%3CT%3E-for-T"]/h3[@class="code-header"]/a[@class="trait"]' 'Fn'
+//@ !has - '//section[@id="impl-Tr%3CT%3E-for-T"]/h3[@class="code-header"]/span[@class="where"]' '~const'
+//@ has - '//section[@id="impl-Tr%3CT%3E-for-T"]/h3[@class="code-header"]/div[@class="where"]' ': Fn'
+impl<T: /* ~const */ Fn() /* + ~const Destruct */> const Tr<T> for T
+where
+    Option<T>: /* ~const */ Fn() /* + ~const Destruct */,
+{
+    fn a<A: /* ~const */ Fn() /* + ~const Destruct */>()
+    where
+        Option<A>: /* ~const */ Fn() /* + ~const Destruct */,
+    {
+    }
+}
+
+//@ !has foo/fn.foo.html '//pre[@class="rust item-decl"]/code/a[@class="trait"]' '~const'
+//@ has - '//pre[@class="rust item-decl"]/code/a[@class="trait"]' 'Fn'
+//@ !has - '//pre[@class="rust item-decl"]/code/div[@class="where"]' '~const'
+//@ has - '//pre[@class="rust item-decl"]/code/div[@class="where"]' ': Fn'
+pub const fn foo<F: /* ~const */ Fn() /* + ~const Destruct */>()
+where
+    Option<F>: /* ~const */ Fn() /* + ~const Destruct */,
+{
+    F::a()
+}
+
+impl<T> S<T> {
+    //@ !has foo/struct.S.html '//section[@id="method.foo"]/h4[@class="code-header"]' '~const'
+    //@ has - '//section[@id="method.foo"]/h4[@class="code-header"]/a[@class="trait"]' 'Fn'
+    //@ !has - '//section[@id="method.foo"]/h4[@class="code-header"]/span[@class="where"]' '~const'
+    //@ has - '//section[@id="method.foo"]/h4[@class="code-header"]/div[@class="where"]' ': Fn'
+    pub const fn foo<B, C: /* ~const */ Fn() /* + ~const Destruct */>()
+    where
+        B: /* ~const */ Fn() /* + ~const Destruct */,
+    {
+        B::a()
+    }
+}