Move /src/test to /tests

tests/rustdoc/const-generics/lazy_normalization_consts/const-equate-pred.rs

@@ -0,0 +1,18 @@
+#![crate_name = "foo"]
+#![feature(generic_const_exprs)]
+#![allow(incomplete_features)]
+
+// Checking if `Send` is implemented for `Hasher` requires us to evaluate a `ConstEquate` predicate,
+// which previously caused an ICE.
+
+pub struct Hasher<T> {
+    cv_stack: T,
+}
+
+unsafe impl<T: Default> Send for Hasher<T> {}
+
+// @has foo/struct.Foo.html
+// @has - '//h3[@class="code-header"]' 'impl Send for Foo'
+pub struct Foo {
+    hasher: Hasher<[u8; 3]>,
+}