From 698f8c2f01ea549d77d7dc3338a12e04c11057b9 Mon Sep 17 00:00:00 2001
From: Daniel Baumann <daniel.baumann@progress-linux.org>
Date: Wed, 17 Apr 2024 14:02:58 +0200
Subject: Adding upstream version 1.64.0+dfsg1.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
---
 library/std/src/backtrace/tests.rs | 95 ++++++++++++++++++++++++++++++++++++++
 1 file changed, 95 insertions(+)
 create mode 100644 library/std/src/backtrace/tests.rs

(limited to 'library/std/src/backtrace/tests.rs')

diff --git a/library/std/src/backtrace/tests.rs b/library/std/src/backtrace/tests.rs
new file mode 100644
index 000000000..4dfbf88e8
--- /dev/null
+++ b/library/std/src/backtrace/tests.rs
@@ -0,0 +1,95 @@
+use super::*;
+
+fn generate_fake_frames() -> Vec<BacktraceFrame> {
+    vec![
+        BacktraceFrame {
+            frame: RawFrame::Fake,
+            symbols: vec![BacktraceSymbol {
+                name: Some(b"std::backtrace::Backtrace::create".to_vec()),
+                filename: Some(BytesOrWide::Bytes(b"rust/backtrace.rs".to_vec())),
+                lineno: Some(100),
+                colno: None,
+            }],
+        },
+        BacktraceFrame {
+            frame: RawFrame::Fake,
+            symbols: vec![BacktraceSymbol {
+                name: Some(b"__rust_maybe_catch_panic".to_vec()),
+                filename: None,
+                lineno: None,
+                colno: None,
+            }],
+        },
+        BacktraceFrame {
+            frame: RawFrame::Fake,
+            symbols: vec![
+                BacktraceSymbol {
+                    name: Some(b"std::rt::lang_start_internal".to_vec()),
+                    filename: Some(BytesOrWide::Bytes(b"rust/rt.rs".to_vec())),
+                    lineno: Some(300),
+                    colno: Some(5),
+                },
+                BacktraceSymbol {
+                    name: Some(b"std::rt::lang_start".to_vec()),
+                    filename: Some(BytesOrWide::Bytes(b"rust/rt.rs".to_vec())),
+                    lineno: Some(400),
+                    colno: None,
+                },
+            ],
+        },
+    ]
+}
+
+#[test]
+fn test_debug() {
+    let backtrace = Backtrace {
+        inner: Inner::Captured(LazilyResolvedCapture::new(Capture {
+            actual_start: 1,
+            resolved: true,
+            frames: generate_fake_frames(),
+        })),
+    };
+
+    #[rustfmt::skip]
+    let expected = "Backtrace [\
+    \n    { fn: \"__rust_maybe_catch_panic\" },\
+    \n    { fn: \"std::rt::lang_start_internal\", file: \"rust/rt.rs\", line: 300 },\
+    \n    { fn: \"std::rt::lang_start\", file: \"rust/rt.rs\", line: 400 },\
+    \n]";
+
+    assert_eq!(format!("{backtrace:#?}"), expected);
+
+    // Format the backtrace a second time, just to make sure lazily resolved state is stable
+    assert_eq!(format!("{backtrace:#?}"), expected);
+}
+
+#[test]
+fn test_frames() {
+    let backtrace = Backtrace {
+        inner: Inner::Captured(LazilyResolvedCapture::new(Capture {
+            actual_start: 1,
+            resolved: true,
+            frames: generate_fake_frames(),
+        })),
+    };
+
+    let frames = backtrace.frames();
+
+    #[rustfmt::skip]
+    let expected = vec![
+        "[
+    { fn: \"std::backtrace::Backtrace::create\", file: \"rust/backtrace.rs\", line: 100 },
+]",
+        "[
+    { fn: \"__rust_maybe_catch_panic\" },
+]",
+        "[
+    { fn: \"std::rt::lang_start_internal\", file: \"rust/rt.rs\", line: 300 },
+    { fn: \"std::rt::lang_start\", file: \"rust/rt.rs\", line: 400 },
+]"
+    ];
+
+    let mut iter = frames.iter().zip(expected.iter());
+
+    assert!(iter.all(|(f, e)| format!("{f:#?}") == *e));
+}
-- 
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