Add query for const_param_default

src/test/ui/const-generics/defaults/auxiliary/const_defaulty.rs

@@ -0,0 +1,15 @@
+#![feature(const_generics)]
+#![feature(const_generics_defaults)]
+#![allow(incomplete_features)]
+
+pub struct Defaulted<const N: usize=3>;
+impl Defaulted {
+    pub fn new() -> Self {
+        Defaulted
+    }
+}
+impl<const N: usize> Defaulted<N> {
+    pub fn value(&self) -> usize {
+        N
+    }
+}

src/test/ui/const-generics/defaults/external.rs

@@ -0,0 +1,27 @@
+// aux-build:const_defaulty.rs
+// check-pass
+#![feature(const_generics_defaults)]
+#![allow(incomplete_features)]
+
+extern crate const_defaulty;
+use const_defaulty::Defaulted;
+
+struct Local<const N: usize=4>;
+impl Local {
+    fn new() -> Self {
+        Local
+    }
+}
+impl<const N: usize>Local<N> {
+    fn value(&self) -> usize {
+        N
+    }
+}
+
+fn main() {
+    let v = Defaulted::new();
+    assert_eq!(v.value(), 3);
+
+    let l = Local::new();
+    assert_eq!(l.value(), 4);
+}

src/test/ui/const-generics/min_const_generics/type_and_const_defaults.rs

@@ -0,0 +1,14 @@
+// check-pass
+#![crate_type = "lib"]
+#![feature(const_generics_defaults)]
+#![allow(incomplete_features)]
+
+struct Both<T=u32, const N: usize=3> {
+  arr: [T; N]
+}
+
+trait BothTrait<T=u32, const N: usize=3> {}
+
+enum BothEnum<T=u32, const N: usize=3> {
+  Dummy([T; N])
+}