Add test for item hiding

Author: Manishearth

src/test/rustdoc/item-hide-threshold.rs

@@ -0,0 +1,155 @@
+#![allow(unused)]
+
+// @has 'item_hide_threshold/struct.PubStruct.html'
+// @count - '//details[@class="rustdoc-toggle type-contents-toggle"]' 0
+pub struct PubStruct {
+    pub a: usize,
+    pub b: usize,
+}
+
+// @has 'item_hide_threshold/struct.BigPubStruct.html'
+// @count - '//details[@class="rustdoc-toggle type-contents-toggle"]' 1
+// @has - '//details[@class="rustdoc-toggle type-contents-toggle"]' 'Show fields'
+pub struct BigPubStruct {
+    pub a: usize,
+    pub b: usize,
+    pub c: usize,
+    pub d: usize,
+    pub e: usize,
+    pub f: usize,
+    pub g: usize,
+    pub h: usize,
+    pub i: usize,
+    pub j: usize,
+    pub k: usize,
+    pub l: usize,
+    pub m: usize,
+}
+
+// @has 'item_hide_threshold/union.BigUnion.html'
+// @count - '//details[@class="rustdoc-toggle type-contents-toggle"]' 1
+// @has - '//details[@class="rustdoc-toggle type-contents-toggle"]' 'Show fields'
+pub union BigUnion {
+    pub a: usize,
+    pub b: usize,
+    pub c: usize,
+    pub d: usize,
+    pub e: usize,
+    pub f: usize,
+    pub g: usize,
+    pub h: usize,
+    pub i: usize,
+    pub j: usize,
+    pub k: usize,
+    pub l: usize,
+    pub m: usize,
+}
+
+// @has 'item_hide_threshold/union.Union.html'
+// @count - '//details[@class="rustdoc-toggle type-contents-toggle"]' 0
+pub union Union {
+    pub a: usize,
+    pub b: usize,
+    pub c: usize,
+}
+
+// @has 'item_hide_threshold/struct.PrivStruct.html'
+// @count - '//details[@class="rustdoc-toggle type-contents-toggle"]' 0
+// @has - '//div[@class="docblock type-decl"]' 'fields omitted'
+pub struct PrivStruct {
+    a: usize,
+    b: usize,
+}
+
+// @has 'item_hide_threshold/enum.Enum.html'
+// @count - '//details[@class="rustdoc-toggle type-contents-toggle"]' 0
+pub enum Enum {
+    A, B, C,
+    D {
+        a: u8,
+        b: u8
+    }
+}
+
+// @has 'item_hide_threshold/enum.LargeEnum.html'
+// @count - '//details[@class="rustdoc-toggle type-contents-toggle"]' 1
+// @has - '//details[@class="rustdoc-toggle type-contents-toggle"]' 'Show variants'
+pub enum LargeEnum {
+    A, B, C, D, E, F(u8), G, H, I, J, K, L, M
+}
+
+// @has 'item_hide_threshold/trait.Trait.html'
+// @count - '//details[@class="rustdoc-toggle type-contents-toggle"]' 0
+pub trait Trait {
+    type A;
+    #[must_use]
+    fn foo();
+    fn bar();
+}
+
+// @has 'item_hide_threshold/trait.GinormousTrait.html'
+// @count - '//details[@class="rustdoc-toggle type-contents-toggle"]' 1
+// @has - '//details[@class="rustdoc-toggle type-contents-toggle"]' 'Show associated items'
+pub trait GinormousTrait {
+    type A;
+    type B;
+    type C;
+    type D;
+    type E;
+    type F;
+    type G;
+    type H;
+    type I;
+    type J;
+    type K;
+    type L;
+    type M;
+    const N: usize = 1;
+    #[must_use]
+    fn foo();
+    fn bar();
+}
+
+// @has 'item_hide_threshold/trait.HugeTrait.html'
+// @count - '//details[@class="rustdoc-toggle type-contents-toggle"]' 1
+// @has - '//details[@class="rustdoc-toggle type-contents-toggle"]' 'Show associated constants and methods'
+pub trait HugeTrait {
+    type A;
+    const M: usize = 1;
+    const N: usize = 1;
+    const O: usize = 1;
+    const P: usize = 1;
+    const Q: usize = 1;
+    const R: usize = 1;
+    const S: usize = 1;
+    const T: usize = 1;
+    const U: usize = 1;
+    const V: usize = 1;
+    const W: usize = 1;
+    const X: usize = 1;
+    #[must_use]
+    fn foo();
+    fn bar();
+}
+
+// @has 'item_hide_threshold/trait.BigTrait.html'
+// @count - '//details[@class="rustdoc-toggle type-contents-toggle"]' 1
+// @has - '//details[@class="rustdoc-toggle type-contents-toggle"]' 'Show methods'
+pub trait BigTrait {
+    type A;
+    #[must_use]
+    fn foo();
+    fn bar();
+    fn baz();
+    fn quux();
+    fn frob();
+    fn greeble();
+    fn blap();
+    fn whoop();
+    fn pow();
+    fn bang();
+    fn oomph();
+    fn argh();
+    fn wap();
+    fn ouch();
+}