From 1b6a04ca5504955c571d1c97504fb45ea0befee4 Mon Sep 17 00:00:00 2001
From: Valentin Popov <valentin@popov.link>
Date: Mon, 8 Jan 2024 01:21:28 +0400
Subject: Initial vendor packages

Signed-off-by: Valentin Popov <valentin@popov.link>
---
 vendor/gif/tests/decode.rs | 84 ++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 84 insertions(+)
 create mode 100644 vendor/gif/tests/decode.rs

(limited to 'vendor/gif/tests/decode.rs')

diff --git a/vendor/gif/tests/decode.rs b/vendor/gif/tests/decode.rs
new file mode 100644
index 0000000..6fc3aab
--- /dev/null
+++ b/vendor/gif/tests/decode.rs
@@ -0,0 +1,84 @@
+use gif::{DecodeOptions, DisposalMethod, Encoder, Frame};
+
+#[test]
+fn frame_consistency_is_configurable() {
+    let image = create_image_with_oob_frames();
+
+    {
+        let options = DecodeOptions::new();
+        let mut data = image.as_slice();
+        let mut decoder = options.clone().read_info(&mut data).unwrap();
+        assert!(decoder.read_next_frame().is_ok());
+        assert!(decoder.read_next_frame().is_ok());
+    }
+
+    {
+        let mut options = DecodeOptions::new();
+        options.check_frame_consistency(true);
+        let mut data = image.as_slice();
+        let mut decoder = options.clone().read_info(&mut data).unwrap();
+        assert!(decoder.read_next_frame().is_ok());
+        assert!(decoder.read_next_frame().is_err());
+    }
+
+    {
+        let mut options = DecodeOptions::new();
+        options.check_frame_consistency(false);
+        let mut data = image.as_slice();
+        let mut decoder = options.clone().read_info(&mut data).unwrap();
+        assert!(decoder.read_next_frame().is_ok());
+        assert!(decoder.read_next_frame().is_ok());
+    }
+}
+
+fn create_image_with_oob_frames() -> Vec<u8> {
+    let mut data = vec![];
+    let mut encoder = Encoder::new(&mut data, 2, 2, &[0, 0, 0]).unwrap();
+
+    let mut frame = Frame {
+        delay: 1,
+        dispose: DisposalMethod::Any,
+        transparent: None,
+        needs_user_input: false,
+        top: 0,
+        left: 0,
+        width: 2,
+        height: 2,
+        interlaced: false,
+        palette: None,
+        buffer: vec![0, 0, 0, 0].into(),
+    };
+
+    encoder.write_frame(&frame).unwrap();
+    frame.top = 1;
+    frame.left = 1;
+    encoder.write_frame(&frame).unwrap();
+
+    drop(encoder);
+    data
+}
+
+#[test]
+fn check_for_end_code_is_configurable() {
+    // In this particular image, the image data of the 62nd frame has no end code.
+    let image: &[u8] = include_bytes!(concat!(env!("CARGO_MANIFEST_DIR"), "/tests/samples/gifplayer-muybridge.gif"));
+
+    {
+        let options = DecodeOptions::new();
+        let mut decoder = options.clone().read_info(&image[..]).unwrap();
+        for _ in 0..61 {
+            assert!(decoder.read_next_frame().is_ok());
+        }
+        assert!(decoder.read_next_frame().is_ok());
+    }
+
+    {
+        let mut options = DecodeOptions::new();
+        options.check_lzw_end_code(true);
+        let mut decoder = options.clone().read_info(&image[..]).unwrap();
+        for _ in 0..61 {
+            assert!(decoder.read_next_frame().is_ok());
+        }
+        assert!(decoder.read_next_frame().is_err());
+    }
+}
-- 
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