Rollup merge of rust-lang#110329 - aDotInTheVoid:json-inline-again, r=jyn514

Improve tests for rust-lang#110138

These should live in rustdoc-json, not rustdoc-ui, so we can run assertions, and not just check there's no ICE

CC rust-lang#100515, as we never document this suite

r? rustdoc

Author: jyn514

Diff for: tests/rustdoc-json/reexport/auxiliary/enum_with_discriminant.rs

@@ -0,0 +1,6 @@
+//! Should not be inlined
+
+/// Should not be inlined
+pub enum O {
+    L = -1,
+}

Diff for: tests/rustdoc-json/reexport/doc_inline_external_crate.rs

@@ -0,0 +1,10 @@
+// Regression Test for https://github.com/rust-lang/rust/issues/110138
+// aux-build: enum_with_discriminant.rs
+
+#[doc(inline)]
+pub extern crate enum_with_discriminant;
+
+// @!has '$.index[*][?(@.docs == "Should not be inlined")]'
+// @is '$.index[*][?(@.name == "enum_with_discriminant")].kind' '"extern_crate"'
+// @set enum_with_discriminant = '$.index[*][?(@.name == "enum_with_discriminant")].id'
+// @is '$.index[*][?(@.name == "doc_inline_external_crate")].inner.items[*]' $enum_with_discriminant

Diff for: tests/rustdoc-json/reexport/extern_crate_glob.rs

@@ -0,0 +1,10 @@
+// aux-build: enum_with_discriminant.rs
+
+extern crate enum_with_discriminant;
+
+#[doc(inline)]
+pub use enum_with_discriminant::*;
+
+// @!has '$.index[*][?(@.docs == "Should not be inlined")]'
+// @set use = '$.index[*][?(@.inner.name == "enum_with_discriminant")].id'
+// @is '$.index[*][?(@.name == "extern_crate_glob")].inner.items[*]' $use