Simplify rustdoc handling of type aliases for associated types

The logic was very hard to follow before.

1 files changed, 16 insertions, 3 deletions

diff --git a/src/test/rustdoc/deref-typedef.rs b/src/test/rustdoc/deref-typedef.rs
index 770f8d7289c..e2dac2cf417 100644
--- a/src/test/rustdoc/deref-typedef.rs
+++ b/src/test/rustdoc/deref-typedef.rs
@@ -1,18 +1,27 @@
 #![crate_name = "foo"]
 
 // @has 'foo/struct.Bar.html'
-// @has '-' '//*[@id="deref-methods"]' 'Methods from Deref<Target = FooC>'
+// @has '-' '//*[@id="deref-methods"]' 'Methods from Deref<Target = FooJ>'
 // @has '-' '//*[@class="impl-items"]//*[@id="method.foo_a"]' 'pub fn foo_a(&self)'
 // @has '-' '//*[@class="impl-items"]//*[@id="method.foo_b"]' 'pub fn foo_b(&self)'
 // @has '-' '//*[@class="impl-items"]//*[@id="method.foo_c"]' 'pub fn foo_c(&self)'
-// @has '-' '//*[@class="sidebar-title"]' 'Methods from Deref<Target=FooC>'
+// @has '-' '//*[@class="impl-items"]//*[@id="method.foo_j"]' 'pub fn foo_j(&self)'
+// @has '-' '//*[@class="sidebar-title"]' 'Methods from Deref<Target=FooJ>'
 // @has '-' '//*[@class="sidebar-links"]/a[@href="#method.foo_a"]' 'foo_a'
 // @has '-' '//*[@class="sidebar-links"]/a[@href="#method.foo_b"]' 'foo_b'
 // @has '-' '//*[@class="sidebar-links"]/a[@href="#method.foo_c"]' 'foo_c'
+// @has '-' '//*[@class="sidebar-links"]/a[@href="#method.foo_j"]' 'foo_j'
 
 pub struct FooA;
 pub type FooB = FooA;
 pub type FooC = FooB;
+pub type FooD = FooC;
+pub type FooE = FooD;
+pub type FooF = FooE;
+pub type FooG = FooF;
+pub type FooH = FooG;
+pub type FooI = FooH;
+pub type FooJ = FooI;
 
 impl FooA {
     pub fn foo_a(&self) {}
@@ -26,8 +35,12 @@ impl FooC {
     pub fn foo_c(&self) {}
 }
 
+impl FooJ {
+    pub fn foo_j(&self) {}
+}
+
 pub struct Bar;
 impl std::ops::Deref for Bar {
-    type Target = FooC;
+    type Target = FooJ;
     fn deref(&self) -> &Self::Target { unimplemented!() }
 }