rt: Remove `threaded_scheduler()` and `basic_scheduler()` (#2876)

Co-authored-by: Alice Ryhl <alice@ryhl.io>
Co-authored-by: Carl Lerche <me@carllerche.com>

5 files changed, 20 insertions, 3 deletions

diff --git a/tests-build/Cargo.toml b/tests-build/Cargo.toml
index 68231d71..e76621b4 100644
--- a/tests-build/Cargo.toml
+++ b/tests-build/Cargo.toml
@@ -7,6 +7,7 @@ publish = false
 
 [features]
 full = ["tokio/full"]
+rt-core = ["tokio/rt-core", "tokio/macros"]
 
 [dependencies]
 tokio = { path = "../tokio", optional = true }
diff --git a/tests-build/tests/fail/macros_core_no_default.rs b/tests-build/tests/fail/macros_core_no_default.rs
new file mode 100644
index 00000000..23f8847d
--- /dev/null
+++ b/tests-build/tests/fail/macros_core_no_default.rs
@@ -0,0 +1,6 @@
+use tests_build::tokio;
+
+#[tokio::main]
+async fn my_fn() {}
+
+fn main() {}
diff --git a/tests-build/tests/fail/macros_core_no_default.stderr b/tests-build/tests/fail/macros_core_no_default.stderr
new file mode 100644
index 00000000..a3ae32cd
--- /dev/null
+++ b/tests-build/tests/fail/macros_core_no_default.stderr
@@ -0,0 +1,7 @@
+error: The default runtime flavor is `multi_thread`, but the `rt-threaded` feature is disabled.
+ --> $DIR/macros_core_no_default.rs:3:1
+  |
+3 | #[tokio::main]
+  | ^^^^^^^^^^^^^^
+  |
+  = note: this error originates in an attribute macro (in Nightly builds, run with -Z macro-backtrace for more info)
diff --git a/tests-build/tests/fail/macros_invalid_input.stderr b/tests-build/tests/fail/macros_invalid_input.stderr
index 96fdcb17..4c68bd93 100644
--- a/tests-build/tests/fail/macros_invalid_input.stderr
+++ b/tests-build/tests/fail/macros_invalid_input.stderr
@@ -4,7 +4,7 @@ error: the async keyword is missing from the function declaration
 4 | fn main_is_not_async() {}
   | ^^
 
-error: Unknown attribute foo is specified; expected `basic_scheduler` or `threaded_scheduler`
+error: Unknown attribute foo is specified; expected one of: `flavor`, `worker_threads`
  --> $DIR/macros_invalid_input.rs:6:15
   |
 6 | #[tokio::main(foo)]
@@ -28,7 +28,7 @@ error: the test function cannot accept arguments
 16 | async fn test_fn_has_args(_x: u8) {}
    |                           ^^^^^^
 
-error: Unknown attribute foo is specified; expected `basic_scheduler` or `threaded_scheduler`
+error: Unknown attribute foo is specified; expected one of: `flavor`, `worker_threads`
   --> $DIR/macros_invalid_input.rs:18:15
    |
 18 | #[tokio::test(foo)]
diff --git a/tests-build/tests/macros.rs b/tests-build/tests/macros.rs
index 170db227..a12a20ef 100644
--- a/tests-build/tests/macros.rs
+++ b/tests-build/tests/macros.rs
@@ -1,9 +1,12 @@
 #[test]
-fn compile_fail() {
+fn compile_fail_full() {
     let t = trybuild::TestCases::new();
 
     #[cfg(feature = "full")]
     t.compile_fail("tests/fail/macros_invalid_input.rs");
 
+    #[cfg(all(feature = "rt-core", not(feature = "full")))]
+    t.compile_fail("tests/fail/macros_core_no_default.rs");
+
     drop(t);
 }