1 files changed, 84 insertions, 0 deletions
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());
+    }
+}