add tests

Author: b-naber

tests/ui/resolve/auxiliary/open-ns-mod-my_api.rs

@@ -0,0 +1,9 @@
+pub mod utils {
+    pub fn root_helper() {
+        println!("root_helper");
+    }
+}
+
+pub fn root_function() -> String {
+    "my_api root!".to_string()
+}

tests/ui/resolve/auxiliary/open-ns-my_api.rs

@@ -0,0 +1,3 @@
+pub fn root_function() -> String {
+    "my_api root!".to_string()
+}

tests/ui/resolve/auxiliary/open-ns-my_api_core.rs

@@ -0,0 +1,15 @@
+// #![crate_name = "my_api::core"]
+
+pub mod util {
+    pub fn core_mod_fn() -> String {
+        format!("core_fn from my_api::core::util",)
+    }
+}
+
+pub fn core_fn() -> String {
+    format!("core_fn from my_api::core!",)
+}
+
+pub fn core_fn2() -> String {
+    format!("core_fn2 from my_api::core!",)
+}

tests/ui/resolve/auxiliary/open-ns-my_api_utils.rs

@@ -0,0 +1,13 @@
+pub mod util {
+    pub fn util_mod_helper() -> String {
+        format!("Helper from my_api::utils::util",)
+    }
+}
+
+pub fn utils_helper() -> String {
+    format!("Helper from my_api::utils!",)
+}
+
+pub fn get_u32() -> u32 {
+    1
+}

tests/ui/resolve/open-ns-1.rs

@@ -0,0 +1,19 @@
+//@ aux-crate:my_api=open-ns-my_api.rs
+//@ aux-crate:my_api::utils=open-ns-my_api_utils.rs
+//@ aux-crate:my_api::core=open-ns-my_api_core.rs
+//@ compile-flags: -Z namespaced-crates
+//@ edition: 2024
+
+use my_api::root_function;
+use my_api::utils::util;
+//~^ ERROR E0432
+
+fn main() {
+    let _ = root_function();
+    let _ = my_api::root_function();
+    let _ = my_api::utils::utils_helper();
+    //~^ ERROR E0433
+    let _ = util::util_mod_helper();
+    let _ = my_api::core::core_fn();
+    //~^ ERROR E0433
+}

tests/ui/resolve/open-ns-1.stderr

@@ -0,0 +1,22 @@
+error[E0432]: unresolved import `my_api::utils`
+  --> $DIR/open-ns-1.rs:8:13
+   |
+LL | use my_api::utils::util;
+   |             ^^^^^ could not find `utils` in `my_api`
+
+error[E0433]: failed to resolve: could not find `utils` in `my_api`
+  --> $DIR/open-ns-1.rs:14:21
+   |
+LL |     let _ = my_api::utils::utils_helper();
+   |                     ^^^^^ could not find `utils` in `my_api`
+
+error[E0433]: failed to resolve: could not find `core` in `my_api`
+  --> $DIR/open-ns-1.rs:17:21
+   |
+LL |     let _ = my_api::core::core_fn();
+   |                     ^^^^ could not find `core` in `my_api`
+
+error: aborting due to 3 previous errors
+
+Some errors have detailed explanations: E0432, E0433.
+For more information about an error, try `rustc --explain E0432`.

tests/ui/resolve/open-ns-10.rs

@@ -0,0 +1,25 @@
+//@ aux-crate: my_api::utils=open-ns-my_api_utils.rs
+//@ compile-flags: -Z namespaced-crates
+//@ edition: 2024
+
+use my_api::utils::get_u32;
+//~^ ERROR E0659
+
+macro_rules! define {
+    () => {
+        pub mod my_api {
+            pub mod utils {
+                pub fn get_u32() -> u32 {
+                    2
+                }
+            }
+        }
+    };
+}
+
+define!();
+
+fn main() {
+    let val = get_u32();
+    assert_eq!(val, 2);
+}

tests/ui/resolve/open-ns-10.stderr

@@ -0,0 +1,27 @@
+error[E0659]: `my_api` is ambiguous
+  --> $DIR/open-ns-10.rs:5:5
+   |
+LL | use my_api::utils::get_u32;
+   |     ^^^^^^ ambiguous name
+   |
+   = note: ambiguous because of a conflict between a macro-expanded name and a less macro-expanded name from outer scope during import or macro resolution
+   = note: `my_api` could refer to a namespaced crate passed with `--extern`
+note: `my_api` could also refer to the module defined here
+  --> $DIR/open-ns-10.rs:10:9
+   |
+LL | /         pub mod my_api {
+LL | |             pub mod utils {
+LL | |                 pub fn get_u32() -> u32 {
+LL | |                     2
+...  |
+LL | |         }
+   | |_________^
+...
+LL |   define!();
+   |   --------- in this macro invocation
+   = help: use `crate::my_api` to refer to this module unambiguously
+   = note: this error originates in the macro `define` (in Nightly builds, run with -Z macro-backtrace for more info)
+
+error: aborting due to 1 previous error
+
+For more information about this error, try `rustc --explain E0659`.

tests/ui/resolve/open-ns-2.rs

@@ -0,0 +1,18 @@
+//@ aux-crate: my_api=open-ns-my_api.rs
+//@ aux-crate: my_api::utils=open-ns-my_api_utils.rs
+//@ aux-crate: my_api::core=open-ns-my_api_core.rs
+//@ compile-flags: -Z namespaced-crates
+//@ edition: 2024
+
+use my_api::core::{core_fn, core_fn2};
+//~^ ERROR E0432
+use my_api::utils::*;
+//~^ ERROR E0432
+use my_api::*;
+
+fn main() {
+    let _ = root_function();
+    let _ = utils_helper();
+    let _ = core_fn();
+    let _ = core_fn2();
+}

tests/ui/resolve/open-ns-2.stderr

@@ -0,0 +1,15 @@
+error[E0432]: unresolved import `my_api::core`
+  --> $DIR/open-ns-2.rs:7:13
+   |
+LL | use my_api::core::{core_fn, core_fn2};
+   |             ^^^^ could not find `core` in `my_api`
+
+error[E0432]: unresolved import `my_api::utils`
+  --> $DIR/open-ns-2.rs:9:13
+   |
+LL | use my_api::utils::*;
+   |             ^^^^^ could not find `utils` in `my_api`
+
+error: aborting due to 2 previous errors
+
+For more information about this error, try `rustc --explain E0432`.