1 files changed, 51 insertions, 0 deletions
diff --git a/tests/ui/cfg/diagnostics-same-crate.rs b/tests/ui/cfg/diagnostics-same-crate.rs
new file mode 100644
index 000000000..f76ace06a
--- /dev/null
+++ b/tests/ui/cfg/diagnostics-same-crate.rs
@@ -0,0 +1,51 @@
+pub mod inner {
+    #[cfg(FALSE)]
+    pub fn uwu() {}
+    //~^ NOTE found an item that was configured out
+
+    #[cfg(FALSE)]
+    pub mod doesnt_exist {
+        pub fn hello() {}
+    }
+
+    pub mod wrong {
+        #[cfg(feature = "suggesting me fails the test!!")]
+        pub fn meow() {}
+    }
+
+    pub mod right {
+        #[cfg(feature = "what-a-cool-feature")]
+        pub fn meow() {}
+        //~^ NOTE found an item that was configured out
+    }
+}
+
+#[cfg(i_dont_exist_and_you_can_do_nothing_about_it)]
+pub fn vanished() {}
+
+fn main() {
+    // There is no uwu at this path - no diagnostic.
+    uwu(); //~ ERROR cannot find function
+    //~^ NOTE not found in this scope
+
+    // It does exist here - diagnostic.
+    inner::uwu(); //~ ERROR cannot find function
+    //~| NOTE not found in `inner`
+
+    // The module isn't found - we would like to get a diagnostic, but currently don't due to
+    // the awkward way the resolver diagnostics are currently implemented.
+    // FIXME(Nilstrieb): Also add a note to the cfg diagnostic here
+    inner::doesnt_exist::hello(); //~ ERROR failed to resolve
+    //~| NOTE could not find `doesnt_exist` in `inner`
+
+    // It should find the one in the right module, not the wrong one.
+    inner::right::meow(); //~ ERROR cannot find function
+    //~| NOTE not found in `inner::right
+    //~| NOTE the item is gated behind the `what-a-cool-feature` feature
+
+    // Exists in the crate root - we would generally want a diagnostic,
+    // but currently don't have one.
+    // Not that it matters much though, this is highly unlikely to confuse anyone.
+    vanished(); //~ ERROR cannot find function
+    //~^ NOTE not found in this scope
+}