Add trybuild tests

Author: YuhanLiin

macros/tests/ui/entry_preinterrupt_mismatch.rs

@@ -0,0 +1,13 @@
+#![no_main]
+
+use msp430::interrupt::CriticalSection;
+use msp430_rt_macros::entry;
+
+fn init(cs: CriticalSection) -> u32 {
+    32
+}
+
+#[entry(interrupt_enable(pre_interrupt = init))]
+fn main(_i: bool) -> ! {
+    loop {}
+}

macros/tests/ui/entry_preinterrupt_mismatch.stderr

@@ -0,0 +1,7 @@
+error[E0308]: mismatched types
+  --> tests/ui/entry_preinterrupt_mismatch.rs:10:1
+   |
+10 | #[entry(interrupt_enable(pre_interrupt = init))]
+   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected `bool`, found `u32`
+   |
+   = note: this error originates in the attribute macro `entry` (in Nightly builds, run with -Z macro-backtrace for more info)

macros/tests/ui/entry_preinterrupt_no_arg.rs

@@ -0,0 +1,10 @@
+#![no_main]
+
+use msp430_rt_macros::entry;
+
+fn init() {}
+
+#[entry(interrupt_enable(pre_interrupt = init))]
+fn main() -> ! {
+    loop {}
+}

macros/tests/ui/entry_preinterrupt_no_arg.stderr

@@ -0,0 +1,14 @@
+error[E0061]: this function takes 0 arguments but 1 argument was supplied
+ --> tests/ui/entry_preinterrupt_no_arg.rs:7:42
+  |
+7 | #[entry(interrupt_enable(pre_interrupt = init))]
+  | -----------------------------------------^^^^---
+  | |                                        |
+  | |                                        expected 0 arguments
+  | supplied 1 argument
+  |
+note: function defined here
+ --> tests/ui/entry_preinterrupt_no_arg.rs:5:4
+  |
+5 | fn init() {}
+  |    ^^^^

macros/tests/ui/entry_preinterrupt_return_cs3.rs

@@ -0,0 +1,13 @@
+#![no_main]
+
+use msp430::interrupt::CriticalSection;
+use msp430_rt_macros::entry;
+
+fn init<'a>(cs: CriticalSection<'a>) -> CriticalSection<'a> {
+    cs
+}
+
+#[entry(interrupt_enable(pre_interrupt = init))]
+fn main() -> ! {
+    loop {}
+}

macros/tests/ui/entry_preinterrupt_return_cs3.stderr

@@ -0,0 +1,11 @@
+error[E0597]: `cs` does not live long enough
+  --> tests/ui/entry_preinterrupt_return_cs3.rs:10:1
+   |
+10 | #[entry(interrupt_enable(pre_interrupt = init))]
+   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^-
+   | |                                              |
+   | |                                              `cs` dropped here while still borrowed
+   | borrowed value does not live long enough
+   | borrow later stored here
+   |
+   = note: this error originates in the attribute macro `entry` (in Nightly builds, run with -Z macro-backtrace for more info)

macros/tests/ui/global_cs.rs

@@ -0,0 +1,22 @@
+#![no_main]
+
+use msp430::interrupt::CriticalSection;
+use msp430_rt_macros::{entry, interrupt};
+
+static mut CS: Option<CriticalSection> = None;
+
+#[entry]
+fn main(cs: CriticalSection) -> ! {
+    unsafe {
+        CS = Some(cs);
+    }
+    loop {}
+}
+
+#[interrupt]
+fn DefaultHandler(cs: CriticalSection) -> ! {
+    unsafe {
+        CS = Some(cs);
+    }
+    loop {}
+}

macros/tests/ui/global_cs.stderr

@@ -0,0 +1,39 @@
+error[E0658]: msp430-interrupt ABI is experimental and subject to change
+  --> tests/ui/global_cs.rs:16:1
+   |
+16 | #[interrupt]
+   | ^^^^^^^^^^^^
+   |
+   = note: see issue #38487 <https://github.com/rust-lang/rust/issues/38487> for more information
+   = help: add `#![feature(abi_msp430_interrupt)]` to the crate attributes to enable
+   = note: this error originates in the attribute macro `interrupt` (in Nightly builds, run with -Z macro-backtrace for more info)
+
+error[E0759]: `cs` has lifetime `'a` but it needs to satisfy a `'static` lifetime requirement
+  --> tests/ui/global_cs.rs:11:14
+   |
+8  | #[entry]
+   | -------- this data with lifetime `'a`...
+...
+11 |         CS = Some(cs);
+   |              ^^^^^--^
+   |                   |
+   |                   ...is used and required to live as long as `'static` here
+
+error[E0570]: `"msp430-interrupt"` is not a supported ABI for the current target
+  --> tests/ui/global_cs.rs:16:1
+   |
+16 | #[interrupt]
+   | ^^^^^^^^^^^^
+   |
+   = note: this error originates in the attribute macro `interrupt` (in Nightly builds, run with -Z macro-backtrace for more info)
+
+error[E0759]: `cs` has lifetime `'a` but it needs to satisfy a `'static` lifetime requirement
+  --> tests/ui/global_cs.rs:19:14
+   |
+16 | #[interrupt]
+   | ------------ this data with lifetime `'a`...
+...
+19 |         CS = Some(cs);
+   |              ^^^^^--^
+   |                   |
+   |                   ...is used and required to live as long as `'static` here