From 203d4006688521b0e4e193a18b37d8fae7758d46 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Le=C3=B3n=20Orell=20Valerian=20Liehr?= <me@fmease.dev>
Date: Mon, 10 Jul 2023 03:10:24 +0200
Subject: [PATCH] Add rustdoc tests for generic const items

---
 tests/rustdoc/generic-const-items.rs          | 38 +++++++++++++++++++
 .../auxiliary/generic-const-items.rs          | 22 +++++++++++
 .../inline_cross/generic-const-items.rs       | 26 +++++++++++++
 3 files changed, 86 insertions(+)
 create mode 100644 tests/rustdoc/generic-const-items.rs
 create mode 100644 tests/rustdoc/inline_cross/auxiliary/generic-const-items.rs
 create mode 100644 tests/rustdoc/inline_cross/generic-const-items.rs

diff --git a/tests/rustdoc/generic-const-items.rs b/tests/rustdoc/generic-const-items.rs
new file mode 100644
index 00000000000..e2c6a027afa
--- /dev/null
+++ b/tests/rustdoc/generic-const-items.rs
@@ -0,0 +1,38 @@
+#![feature(generic_const_items)]
+#![allow(incomplete_features)]
+
+// @has 'generic_const_items/constant.K.html'
+// @has - '//*[@class="rust item-decl"]//code' \
+// "pub const K<'a, T: 'a + Copy, const N: usize>: Option<[T; N]> \
+// where \
+//     String: From<T>;"
+pub const K<'a, T: 'a + Copy, const N: usize>: Option<[T; N]> = None
+where
+    String: From<T>;
+
+// @has generic_const_items/trait.Trait.html
+pub trait Trait<T: ?Sized> {
+    // @has - '//*[@id="associatedconstant.C"]' \
+    // "const C<'a>: &'a T \
+    // where \
+    //     T: 'a + Eq"
+    const C<'a>: &'a T
+    where
+        T: 'a + Eq;
+}
+
+pub struct Implementor;
+
+// @has generic_const_items/struct.Implementor.html
+// @has - '//h3[@class="code-header"]' 'impl Trait<str> for Implementor'
+impl Trait<str> for Implementor {
+    // @has - '//*[@id="associatedconstant.C"]' \
+    // "const C<'a>: &'a str = \"C\" \
+    // where \
+    //     str: 'a"
+    const C<'a>: &'a str = "C"
+    // In real code we could've left off this bound but adding it explicitly allows us to test if
+    // we render where-clauses on associated consts inside impl blocks correctly.
+    where
+        str: 'a;
+}
diff --git a/tests/rustdoc/inline_cross/auxiliary/generic-const-items.rs b/tests/rustdoc/inline_cross/auxiliary/generic-const-items.rs
new file mode 100644
index 00000000000..0fc7a7aaea2
--- /dev/null
+++ b/tests/rustdoc/inline_cross/auxiliary/generic-const-items.rs
@@ -0,0 +1,22 @@
+#![feature(generic_const_items)]
+#![allow(incomplete_features)]
+
+pub const K<'a, T: 'a + Copy, const N: usize>: Option<[T; N]> = None
+where
+    String: From<T>;
+
+pub trait Trait<T: ?Sized> {
+    const C<'a>: &'a T
+    where
+        T: 'a + Eq;
+}
+
+pub struct Implementor;
+
+impl Trait<str> for Implementor {
+    const C<'a>: &'a str = "C"
+    // In real code we could've left off this bound but adding it explicitly allows us to test if
+    // we render where-clauses on associated consts inside impl blocks correctly.
+    where
+        str: 'a;
+}
diff --git a/tests/rustdoc/inline_cross/generic-const-items.rs b/tests/rustdoc/inline_cross/generic-const-items.rs
new file mode 100644
index 00000000000..70cf7af888e
--- /dev/null
+++ b/tests/rustdoc/inline_cross/generic-const-items.rs
@@ -0,0 +1,26 @@
+#![crate_name = "user"]
+
+// aux-crate:generic_const_items=generic-const-items.rs
+// edition:2021
+
+// @has 'user/constant.K.html'
+// @has - '//*[@class="rust item-decl"]//code' \
+// "pub const K<'a, T: 'a + Copy, const N: usize>: Option<[T; N]> \
+// where \
+//     String: From<T>;"
+pub use generic_const_items::K;
+
+// @has user/trait.Trait.html
+// @has - '//*[@id="associatedconstant.C"]' \
+// "const C<'a>: &'a T \
+// where \
+//     T: 'a + Eq"
+pub use generic_const_items::Trait;
+
+// @has user/struct.Implementor.html
+// @has - '//h3[@class="code-header"]' 'impl Trait<str> for Implementor'
+// @has - '//*[@id="associatedconstant.C"]' \
+// "const C<'a>: &'a str = \"C\" \
+// where \
+//     str: 'a"
+pub use generic_const_items::Implementor;