From 834cab724441b1c538f5a84b0fef8f0052714137 Mon Sep 17 00:00:00 2001
From: woppopo <woppopo@protonmail.com>
Date: Tue, 27 Sep 2022 19:09:32 +0000
Subject: [PATCH] Add test cases for const `Location`

---
 library/core/tests/lib.rs            |  2 ++
 library/core/tests/panic.rs          |  1 +
 library/core/tests/panic/location.rs | 31 ++++++++++++++++++++++++++++
 3 files changed, 34 insertions(+)
 create mode 100644 library/core/tests/panic.rs
 create mode 100644 library/core/tests/panic/location.rs

diff --git a/library/core/tests/lib.rs b/library/core/tests/lib.rs
index 59510d3cc2a..548c1884ecd 100644
--- a/library/core/tests/lib.rs
+++ b/library/core/tests/lib.rs
@@ -7,6 +7,7 @@
 #![feature(const_assume)]
 #![feature(const_black_box)]
 #![feature(const_bool_to_option)]
+#![feature(const_caller_location)]
 #![feature(const_cell_into_inner)]
 #![feature(const_convert)]
 #![feature(const_heap)]
@@ -131,6 +132,7 @@
 mod ops;
 mod option;
 mod pattern;
+mod panic;
 mod pin;
 mod pin_macro;
 mod ptr;
diff --git a/library/core/tests/panic.rs b/library/core/tests/panic.rs
new file mode 100644
index 00000000000..b7056bdf36e
--- /dev/null
+++ b/library/core/tests/panic.rs
@@ -0,0 +1 @@
+mod location;
\ No newline at end of file
diff --git a/library/core/tests/panic/location.rs b/library/core/tests/panic/location.rs
new file mode 100644
index 00000000000..ba066bfbc53
--- /dev/null
+++ b/library/core/tests/panic/location.rs
@@ -0,0 +1,31 @@
+use core::panic::Location;
+
+// Note: Some of the following tests depend on the source location,
+// so please be careful when editing this file.
+
+#[test]
+fn location_const_caller() {
+   const _CALLER_REFERENCE: &Location<'static> = Location::caller();
+   const _CALLER: Location<'static> = *Location::caller();
+}
+
+#[test]
+fn location_const_file() {
+   const CALLER: &Location<'static> = Location::caller();
+   const FILE: &str = CALLER.file();
+   assert_eq!(FILE, "library/core/tests/panic/location.rs");
+}
+
+#[test]
+fn location_const_line() {
+   const CALLER: &Location<'static> = Location::caller();
+   const LINE: u32 = CALLER.line();
+   assert_eq!(LINE, 21);
+}
+
+#[test]
+fn location_const_column() {
+   const CALLER: &Location<'static> = Location::caller();
+   const COLUMN: u32 = CALLER.column();
+   assert_eq!(COLUMN, 39);
+}
\ No newline at end of file